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Walker MB (18 HP) User's Manual

1. Table of Contents ADJUSTMENTS Steering Levers Tilt Up Deck Adjustable Stop ELECTRICAL SYSTEM Illustrated Parts Manual TRACTOR DECALS BODY CHASSIS ASSEMBLY MAIN COMPONENT POWER TRANSMISSION ENGINE GROUP HYDROSTATIC GROUND DRIVE ASSEMBLIES STEERING CONTROL ASSEMBLIES ELECTRICAL ASSEMBLY WIRING SCHEMATIC Operator s Notes Maintenance And Service Record Sheet Warranty General Information HIGHLIGHTED INFORMATION Walker Manufacturing recommends that any ser vice requiring special training or tools be performed by an authorized Walker Mower Dealer There are several general practices to be aware of in the area of safety Most accidents associated with the oper ation or maintenance of a Walker Mower are caused by disregarding basic safety precautions or specific warnings Such accidents in most cases can be prevented by being aware of the dangers present Information of special importance has been high lighted in bold type in this manual Refer to Safety Instructions for the meanings of DANGER WARN ING CAUTION IMPORTANT and NOTE GLOSSARY There are many terms that are either unique to this equipment or that are used as acronyms The fol lowing terms and their definitions will help while using this manual e DECK is the mowing attachment mounted on the front of the tracto
2. 15 amp 16 18 5020 1 Fuel Filter In Tank 1 Choke and Throttle Assemblies 19 5975 3 Cable Tie 508 x 7 2 20 4108 1 Throttle Choke Cable 56 1 2 2 21 5172 Bearing Nylon 255 ID x 379 OD 250 1 22 5108 7 Control Lock Tab 2 23 5108 10 Friction Washer 125 2 24 5108 8 Control Bracket 2 25 5108 1 Control Lever Throttle Choke 2 26 5108 5 Throttle Control Knob Red 1 27 5108 6 Choke Control Knob Black 1 28 7108 Control Assembly 2 8121 Throttle Control and Cable Assembly Includes Item 26 8122 Choke Control and Cable Assembly Includes Item 27 Use only genuine Walker replacement parts Effective Date 10 01 04 ENGINE GROUP Refer to Hydrostatic Ground Drive Assemblies Effective Date 10 01 04 Refer to Body Chassis d Assembly Use only genuine Walker replacement parts 59 60 HYDROSTATIC GROUND DRIVE ASSEMBLIES PART DESCRIPTION NO PART DESCRIPTION NO NO NO REQD NO NO REGD Ground Drive Assemblies Wheel Assembly 1 4024 Oil Expansion Reservoir 2 42 5075 LP Wheel amp Tire Assembly 18 x 8 50 10 2 Includes Items 2 amp 4 5075 2 LP Tire 18 x 8 50 10 2 NS Nut 4 5075 4 LP Wheel 10 x 7 3 4024 4 Reservoir Mount RH 1 5033 2 Wheel amp Tire Assembly 18 x 6 50 8 4 NS Washer 2 5030 2 Standard Tire 18 x 6 50 8 5 4024 1 Oil Expansion Reservoir Elbow 2 5031 2 Standard Wheel 8 x 5 5 6 5879 3 Hose Clamp 1 2 4 5030 4 Tire Tube
3. 2 Includes Items 29 amp F345 29 5850 2 Handle Grip Foam 5 1 2 2 30 4451 2 Speed Control Actuator RH 1 Includes Item 3 Transmission Spring Assemblies 31 6199 Transmission Spring Assembly RH Includes Items 32 38 F003 F287 F320 amp F352 32 5552 Ball Joint 1 4 28 2 33 5192 1 Spring Plunger 5 32 2 34 5194 Plunger Sleeve 2 35 5193 Washer 3 4 x 1 x 085 2 36 6191 Spring Slide 4 3 4 2 37 5195 Compress Spring 1 x 5 1 8 2 38 619 Spring Slide Cap 2 Use only genuine Walker replacement parts Effective Date 10 01 04 STEERING CONTROL ASSEMBLIES Effective Date 10 01 04 9 es F010 XT oT Refer to 12 Hydrostatic Ground Fa ii 9435 98 F391 Drive Assemblies a Refer to Hydrostatic Ground Drive Assemblies F193 F004 p F004 o m 7 d dus xx GE a of T xX Refer to Body Chassis wa Assembly Use only genuine Walker replacement parts 63 64 ELECTRICAL ASSEMBLY PART DESCRIPTION NO ITEM PART DESCRIPTION NO NO NO REGD NO NO REQD Electrical Assembly Fasteners 1 8960 15 Ignition Switch W Keys 1 F002 10 24 Keps Nut 4 Includes Items 17 18 amp F349 F004 1 4 20 Keps Nut 2 2 6950 PTO Switch 1 F009 5 16 18 Whiz Locknut 1 3 6941 Relay Switch 30 40AMP NC 1 F025 10 24 x 3 8 PPHMS 2 4 7941 3 Boot Circuit Breaker 1 026 10 24 x 1 2 PPHMS 2 5 7941 6 Circuit Breaker 15AMP 1 F028 10 24 x 3 4 PPHMS 1 6 5942 1 Switch Boot
4. Align and connect the splined PTO shaft and socket halves as shown in PTO Shaft Connec tion photo The PTO shafthas a pilot endto ease alignment of shaft fit shaft end into socket and rotate shaft until the splines line up as indicated by arrows then slide together Arrows on Shaft and Tube used to align when sliding together PTO Shaft Connection Install the hitch pin through the hole on the end of each support arm to lock the deck in place re fer to Deck Counterweight Spring Installation photo Two 2 hitch pins are included in the owner s packet of materials Mower Deck Installation Assembly Instructions Spring Tension Adjustment Nut Located Under Lower Spring Hook not visible Counterweight Springs Clip Onto Body With Body Tilted Up pium Hitch Pins Lock Deck On Support Arms Deck Counterweight Spring Installation Raise mower body instead of lifting the front of deck and clip the counterweight springs to the receptacle on front of body Lower the body to tension the springs Refer to Deck Counter weight Spring Installation photo With the counterweight springs connected the weight on the deck caster wheels should be 15 to 25 Ib 6 8 to 11 3 kg Check this weight by lift ing on the front of the deck carrier frame If required the spring tension can be adjusted by tightening or loosening the elastic stop nuts lo cated underneath the lower spring hook Refer to Deck Counterweight Sprin
5. When the machine is stopped or moving slowly engage the parking brake Beginning Recommendations are Learn operation of the mower in an open area away from buildings fences and ob structions Learn operation on flat ground BEFORE operating on slopes Start maneuvering the mower with SLOW engine speed and SLOW Forward Speed Control setting until familiar with all operat ing characteristics Remember it is not necessary to hold the steering levers forward a unique Walker feature always PULL on the levers for NOTE This is exactly the same procedure steering or for reverse motion of the mower used to normally stop and park the machine Learn to operate the mower with your left NOTE the FSC lever will not stay in the hand on the steering levers and right hand on Forward Speed Control The use of two hands on the steering levers tends to cause selected position the friction lock needs to be adjusted Contact your Walker Dealer Steer by pulling the lever on the side of desired overcontrol pn direction of turn e g pull the LH lever to turn left To minimize the possibility of overcontrol Learn to operate the steering levers with use only one hand on both steering levers smooth action Jerky movements are hard on the transmission and lawn For sharp turns do not allow the inside wheel to stop and twist on the grass Pull the steering le ver controlling the inside wheel into reverse
6. 1 2 1 F024 5 16 24 Jam Nut 3 8 4451 4 FSC Friction Actuator 1 F035 5 16 18 x 1 1 4 Hex Bolt 1 9 5214 2 Ball Joint 5 16 24 Nylon Lined 2 F093 5 16 18 x 1 Hex Bolt 2 10 4213 Hydro Gear Control Rod 2 F146 1 4 20 Jam Nut 2 11 9024 Washer 1 8 x 7 8 2 F167 5 16 18 Hex Nut 1 12 4212 Transmission Control Arm 2 F183 312 x 700 x 074 Washer 4 13 4215 1 Steering Lever Dampener 2 F188 1 4 20 Self Locking Nut 4 14 5146 10mm Ball Stud 4 F192 3 8 24 Self Locking Nut 1 15 4215 Steering Dampener Mount 1 F193 3 8 Belleville Spring Washer 3 16 5214 3 Ball Joint 5 16 24 LH Nylon Lined 2 F198 250 x 625 x 040 Washer SS 2 17 5830 3 Grease Fitting 45 Deg 1 F211 1 4 20 x 7 8 Hex Bolt 1 18 4451 1 Steering Pivot Shaft W Stop 1 235 5 16 18 x 2 1 2 Hex Bolt 12 19 9704 3 Pivot Rod Bushing Plastic 2 F287 1 4 28 Keps Nut 2 20 41422 FSC Friction Washer 1 F312 3 8 x 3 8 Shoulder Bolt 1 1 1 2 x 1 1 32 x 1 16 F320 1 8 x 3 4 Split Spring Pin 2 21 5141 FSC Friction Washer 1 F345 1 4 20 x 770 Knurled Bolt 4 1 1 2 x 3 8 x 1 16 F352 5 32 x 1 Heavy Duty Roll Pin 2 22 4142 1 FSC Cam 1 F373 5 16 24LH Hex Nut 3 23 4452 6 Steering Pivot 1 4 20 x 1 1 2 2 F385 1 4 x 1 1 4 Roll Pin 1 24 4451 3 Speed Control Actuator LH 1 F386 5 16 18 x 1 1 2 x 3 8 Shoulder Bolt 1 Includes Item 17 F391 1 4 20 x 1 2 Set Screw SS 2 25 5222 Extension Spring 1 2 x 3 1 4 2 26 5450 D Clip 2 Service Part Only 27 4452 4 Steering Lever Tube W Tab 2 28 5453 10 Steering Lever Handle Adj
7. 18 x 8 50 8 7 5086 2 Hose 1 4 x 10 1 2 2 43 8070 31 Wheel Spacer Plate 1 2 8 NS 90 Elbow 2 9 4028 3 Hydro Lockout Rod 2 Fasteners 10 4024 3 Oil Reservoir Mount LH 1 11 4240 Drive Pulley 4 1 2A 1 F004 1 4 20 Keps Nut 8 Includes Items F067 amp F171 F005 1 4 20 ESNA Nut 3 12 5221 Extension Spring 3 4 x 4 1 F009 5 16 18 Whiz Locknut 3 13 7201 3 DU Bearing 1 F012 3 8 16 Keps Nut 3 14 72014 Inner Race 1 1 2 1 F013 3 8 16 Whiz Locknut 1 15 5830 Grease Fitting 1 F015 1 2 Wheel Lug Nut 8 16 5841 Retainer Washer 3 8 x 1 1 4 1 F029 1 4 20 x 1 2 Hex Bolt 6 17 43502 Flex Coupling Half 1 Bore 1 F031 1 4 20 x 5 8 Hex Bolt 2 18 4350 Spider Flexible Coupling 1 F034 5 16 18 x 3 4 Hex Bolt 1 19 4350 1 Flex Coupling Half 3 4 Bore 1 F040 3 8 16 x 1 1 2 Hex Bolt 1 20 4349 2 Hydro Drive Shaft 1 F042 3 8 16 x 2 1 4 Hex Bolt 1 21 4349 4 Flanged Bearing 1 F051 3 8 SAE Washer 1 22 4349 1 Bearing Mount Plate 1 F066 1 4 x 1 4 x 3 4 Key 1 23 4977 Grommet 1 2 x 13 16 x 3 16 2 F067 3 16 x 3 16 x 1 Key 2 24 4349 Hydro Idler Arm 1 F069 3 32 x 1 2 Cotter Pin 3 25 4245 Idler Pulley 3 A 1 F111 1 8 x 3 4 Cotter Pin 2 26 4248 Ground Drive Belt 1 F151 3 8 16 x 7 8 Hex Bolt 2 27 4025 Hydro Gear W Charge Pump LH 1 F171 5 16 18 x 3 8 Set Screw 2 Includes Item 9 F173 5 16 18 x 3 4 Carriage Bolt 2 28 4025 9 Parking Brake Arm Kit x 29 4026 Hydro Gear W Charge Pump RH 1 Gervice Part Only Includes Item 9 30 9023 6mm x 20mm Dowel Pin 2 May be or
8. F020 qn Tem BM a sera E Jo F004 A g HR e004 Effective Date 10 01 04 Use only genuine Walker replacement parts 55 56 MAIN COMPONENT POWER TRANSMISSION PART DESCRIPTION NO PART DESCRIPTION NO NO NO REGD NO NO REGD PTO Drive Assembly Fasteners 1 4706 1 Extension Spring 3 4 x 4 1 F009 5 16 18 Whiz Locknut 4 2 7201 3 DU Bearing 1 012 3 8 16 Keps Nut 2 3 5830 Grease Fitting 2 F013 3 8 16 Whiz Locknut 5 4 4325 PTO Belt Tightener 1 F034 5 16 18 x 3 4 Hex Bolt 4 Includes Item 3 F038 3 8 16 x 1 Hex Bolt 4 5 7201 4 Inner Race 1 1 2 1 F041 3 8 16 x 1 3 4 Hex Bolt 1 6 5841 Retainer Washer 3 8 x 1 1 4 1 F042 3 8 16 x 2 1 4 Hex Bolt 2 7 4245 2 Stationary Idler Arm 1 F051 3 8 SAE Washer 3 8 4245 1 Idler Pulley 4 Flat 2 F063 3 8 Internal Star Lock Washer 2 9 4230 Engine PTO Belt 2 F067 3 16 x 3 16 x 1 Key 1 10 4410 3 Clutch Spacer 1 076 3 8 16 x 5 8 SQH Set Screw 1 11 4410 Electric Clutch 1 F135 3 16 x 3 16 x 1 3 4 Key 1 12 6325 2 Spacer Bushing 5 16 1 F151 3 8 16 x 7 8 Hex Bolt 2 13 4236 PTO Drive Pulley 5 AA 1 F171 5 16 18 x 3 8 Set Screw 2 Includes Items F135 amp F171 F278 3 8 Split Lock Washer 1 14 5263 Pillowblock Bearing 2 F387 3 8 24x2 1 2 Hex Bolt 1 15 4274 PTO Drive Shaft 1 16 5275 15 U Joint Tube 9 5 OAL Spline 1 Includes Item F076 17 4300 7 Belt Guard 1 Use only genuine Walker8 replacement parts Effective Date 10 01 04 MAIN COMPONENT POWER TR
9. MODEL MB Beginning S N 2004 68441 51 START CIRCUIT 52 START ACCESSORY CIRCUIT M MAGNETO GROUND CIRCUIT B BATTERY CIRCUIT ACCESSORY CIRCUIT G GROUND CIRCUIT PUR CARB SOLENOID PUR RECTIFIER REGULATOR ELL GROUND m STARTER STARTER YEL SOLENOID E RED WHT FSC NEUTRAL INTERLOCK O SWITCH RED Q Use only genuine Walker replacement parts Effective Date 10 01 04 66 OPERATOR S NOTES Effective Date 10 01 04 Use only genuine Walker replacement parts 67 68 MAINTENANCE AND SERVICE RECORD SHEET DATE SERVICE ITEM ENGINE HOURS Use only genuine Walker replacement parts Effective Date 10 01 04 LIMITED WARRANTY FOR WALKER MODEL MB RIDER MOWER WHAT THIS WARRANTY COVERS AND FOR HOW LONG Walker Manufacturing company will at its option repair or replace without charge any part covered by this warranty which is found to be defective in material and or workmanship within one 1 year after date of sale to the original retail purchaser unless the product is used for commercial or rental purposes in which case this warranty is limited to ninety 90 days At Walker s request customer will make the defective part available for inspection by Walker and or return the defective part to Walker transportation charges prepaid All parts and components of the Walker Mower are covered by this warranty except the following components which are warran
10. is in the ON position The hourmeter provides maintenance reminders after certain hours of operation The hourmeter screen will start flashing the reminder one hour prior to the recommended interval and will continue until one hour after the recommended interval two hours The hourmeter does not have a manual reset function Procedure 1 Reminder Oil Change Break In Lubricate and Check 24 26 Hours LUBE Levels Oil Change 49 51 Hours oL These intervals reflect the actual time that the reminder will flash one hour prior to and one hour after the recommended interval 4 6 Hours OIL This reminder is only used one time In normal operating conditions oil changes in 100 hour intervals are acceptable Walker and the engine manufacturers recommend engine oil changes every 50 hours in extremely dirty or dusty conditions or for units with less than 100 hours annual use NOTE The blinking hour glass on the display means that the meter is operating properly Hourmeter Operating Instructions The Forward Speed Control also Establishes the Neutral Park Position of the Steering Levers LEFT WHEEL STEERING LEVER Forward Position No Control Change Neutral Park Position Reverse Drive Wheel Motion Position RIGHT WHEEL STEERING LEVER Throttle Position Idle Position THROTTLE ON Position OFF Position CHOKE FORWARD SPEED CONTROL LEVER FSC Full F
11. lever FORWARD releases the brake IMPORTANT Stop the tractor completely before engaging the parking brake The parking brake uses a positive mechanical lock similar to the PARK posi tion on an automotive automatic transmission If the tractor is moving when the brake is engaged it will result in sudden stoppage and possible internal damage to the transaxle NOTE f pressure on the parking brake pin e g parked on a hill makes it impossible to release the parking brake with the parking brake lever move the mower gently forward or backward to allow the brake detent to set into the teeth Transaxle Lockout Rods The transaxle lockout rods disengage the transax les By lifting the rods up and locking them into place with the shoulder on the rod in the chassis notch the transaxles are released to permit freewheeling By releasing the rods and recessing them back toward the chassis the transaxles are engaged for normal operation The transaxle rods in the LOCKOUT position are used to enable moving the machine without the engine running e g for service Refer to TRANSAXLE LOCKOUTS in this section for operating instructions NOTE The transaxle lockout rods ends should be completely retracted against the body otherwise operation of the transaxle may be erratic Hydro Lockout Rod Location Hourmeter The hourmeter which is located on the left front of the body displays operating time accumulated while the ignition switch
12. manual covers Model MB with the Briggs amp Stratton Vanguard 18 HP gasoline engine All shields and guards must be in place for the proper and safe operation of this machine Where they are shown removed in this manual it is for illustration purposes only Do not operate this machine unless all shields and guards are in place Specifications given are based on the latest information available at the time this manual was produced Walker Mfg Co is continually striving to improve the design and performance of its products We reserve the right to make changes in specifications and design without thereby incurring any obli gation relative to previously manufactured products Sincerely WALKER MANUFACTURING COMPANY Wallan Bob Walker President Table of Contents Owner s Manual General Information HIGHLIGHTED INFORMATION GLOSSARY IDENTIFYING NUMBER LOCATIONS ENGINE SERIAL NUMBER LOCATION SERVICING OF ENGINE AND DRIVETRAIN COMPONENTS Specifications Component Identification Safety Instructions BEFORE OPERATING OPERATING MAINTENANCE SAFETY CONTROL AND INSTRUCTION DECALS Assembly Instructions SETUP INSTRUCTIONS Battery Service Mower Deck Assembly Deck Caster Wheels Installation Deck Discharge Shield Installation PTO Shaft Guard Installation Tilt Up Roller Wheel Installation Mower Deck Installation on Tractor Deck Installation Deck
13. period of 5 8 hours Thereafter change oil after every 50 hours of operation Checking Engine Crankcase Oil Level Check the engine crankcase oil level before use and after each 8 hours of continuous operation IMPORTANT The importance of checking and maintaining the proper crankcase oil level cannot be overemphasized Check the oil level BEFORE EACH USE 1 Park the mower on a level surface with the engine stopped Also make sure the engine is cool and oil has had time to drain into the sump allow at least five 5 minutes after stopping the engine IMPORTANT NEVER check or add oil with the engine running Before removing the dipstick clean the area around the dipstick to keep any dirt or debris out of the engine Remove the dipstick wipe off with a clean rag then reinsert the dipstick into the tube and press all the way down Remove the dipstick again and check the oil level on the dipstick The oil level should be within the Operating Range on the dipstick between the LOW mark and the FULL mark LUBRICATION IMPORTANT DO NOT operate engine without sufficient oil supply in the crankcase DO NOT operate with oil level below the LOW mark or above the FULL mark on the dipstick T fF M Operating Range x FULL Mark LOW Mark Dipstick Operating Range If additional oil is needed refer to Specifications for proper crankcase lubricant Fill to the FULL mark IMPORTANT DO NOT overfill crankcase
14. vapors are explosive a Use an approved fuel container b Never add fuel to a running engine or hot engine allow hot engine to cool several minutes Keep matches cigarettes cigars pipes open flames or sparks away from the fuel tank and fuel container Always fill the fuel tank outdoors using care Fill to about one inch from the top of the tank Use a funnel or spout to prevent spilling Replace the machine fuel cap and container cap securely and clean up any spilled fuel before starting the engine Never attempt to make any adjustments whilethe engine is running except where spe cifically instructed to do so 12 The electrical system battery contains sulfuric acid Avoid any contact with skin eyes and clothing Keep the battery and acid out of reach of children OPERATING 1 Operate the mower only in daylight or in good artificial light with good visibility of the area being mowed Sit on the seat when starting the engine and operating the machine Keep feet on the deck footrests at all times when the tractor is moving and or mower blades are operating For a beginning operator learn to steer maneuver the tractor with a slow engine speed before attempting any mowing oper ation Be aware that with the front mounted mower configuration the back of the tractor swings to the outside during turns Remember for an emergency stop the forward motion of the tractor can always be stopped by pu
15. with Neutral Park Position Dynamic Braking through Hydrostatic Transmission Mechanical Cog Lock in Transmission Gear Transmission Release by Manual Dump Valve Direct Drive Axle from Transaxle Specifications MODEL TRANSMISSION continued Transmission Fluid Factory Service Transmission Fluid Capacity Transmission Cooling Ground Travel Speed Forward m p h km h Reverse m p h km h 20W50 Multi Viscosity Motor Oil Minimum SL Grade Oil 79 fl oz 2336 ml Cooling Fan Mounted on Drive Pulley 0 13 Infinitely Variable 0 13 Infinitely Variable 0 0 8 8 BLADE DRIVE PTO Shaft Blade Spindle Blade Drive Clutch and Brake Max Blade Speed 22 in 56 cm Blade 3600 RPM Engine Sliding Spline Shaft with Two 2 High Speed U Joints Each Blade 2 Mounts Direct on Peerless Right Angle Gearbox with Tee Gearbox in Center Connected to PTO Shaft Complete Geared Drive Peerless Model 1000 Gearboxes 12V Electrical Electromagnetic Clutch and Brake Switch Operated Stops Blades within Five 5 Seconds of Disengagement 2900 RPM 16700 FPM 5090 m min TIRE SIZE Deck Caster Wheel Deck Caster Wheel Optional Drive Rear 2 80 2 50 4 Pneumatic 4 Ply 8 25 x 2 75 Semi Pneumatic 18 x 8 50 10 4 Ply 13 x 6 50 6 4 Ply TIRE PRESSURE Deck Caster Wheel Drive Rear 20 PSI 137 kPa 15 PSI 103 kPa 20 PSI 137 kPa DIMENSIONS Tractor and Mower Length Width 3
16. 0 Walker P N 4248 SEAT Contour Molded with Nylon Backed Vinyl Cover and Integral Foam Cushion FRAME BODY CONSTRUCTION Frame Body Deck 3 16 Plate Steel 11 Gauge Steel NOTE The manufacturer reserves the right to make changes in specifications shown herein at any time without notice or obligation Component Identification Fuel Pickup Line Fuel Tank Forward Speed Control FSC Friction Adjustment Deck Support Arm Deck Lift Handle Cutting Height Adjustment Deck Discharge Shield Footrests NOTE Control Identification shown in Operating Instructions section Tilt Up Latch Counterweight Spring and Protective Cover Deck Support Pin and Height Adjustment Hitch Pins Deck Support Arm Tilt Up Deck Handle Footrests Deck Caster Wheels Front View and Right Side View Component Identification Fuel Filter Left Hand Drive Wheel Left Hand Transaxle Oil Fill Oil Dipstick Cylinder Head Cooling Fins Tailpipe Electric Clutch Tailwheel Fork PTO Belt and Wheel Protective Cover Rear View and Left Side View Component Identification Steering Levers LH Transmission Dampening Springs 10 Control Arm LH Transaxle Expansion Reservoir and Hose LH Transaxle LH Transaxle Lockout Rod Positive Battery Cable Negative Battery Cable Fuel Pump Fuel Filter Air Cleaner Cover Oil Fill Oil Dipstick Rubber Bumpers Body Su
17. 05 Deck Gearbox Cover 5807 3 Safety Instructions SAFETY CONTROL AND INSTRUCTION DECALS Safety Control and Instruction Decals are installed on the machine if any are missing illegible or damaged a replacement should be ordered and installed before putting the machine into operation The Decal Part Number is listed below and in the Parts Section BLADE CLUTCH A DANGER READ AND UNDERSTAND OWNER S MANUAL BEFORE JA WARNING OPERATING THIS MACHINE DG ENGAGE CLUTCH WITH KEEP ALL GUARDS IN PLACE PTO SHAFT DESUCHMECTEU OPERATOR HEARING PROTECTION I RECOMMENDED FOR CONTINUOUS GAS MODEL OUS OPERATION OF ROTATING COMPONENTS CONTACT MAY CAUSE RUSO DO NOT OPERATE WITHOUT SHIELD IN PLACE atri Front Body Adjacent to Blade Clutch on Front Body EF LEVAR us Fus Adjacent to RH Steering Lever 6806 BELT ROUTING p GROUND DRIVE BELT 222 222 WALKER P N 4248 NOT i QO REMOVE m 6 SEE WALKER P N 4230 OWNERS MANUAL Z P Hydrostat Oil DANGER PARKING p DO NOT OPERATE MOWER WITH PARK RELEASE DECK IN TILT UP POSITION BRA Deck Carrier Frame 8647 Parking Brake 4406 8 IMPORTANT TIGHTEN BLADE MOUNTING NUTS TO 60 FT LBS DO NOT UNDERTORQUE OR OVERTORQUE FOR PROPER SHOCK LOAD PROTECTION USE TORQUE WRENCH H NEUTRAL LOCKOUT Center Body Behind Transaxles DO NOT ae 9804 Deck Carrier Frame 8653 Deck Ca
18. 6 in 91 cm SD Model with Deflector 42 in 107 cm SD Model with Deflector 48 in 122 cm SD Model with Deflector 56 in 142 cm SD Model with Deflector 41 3 4 in 47 3 4 in 53 3 4 in 61 3 4 in Specifications MODEL DIMENSIONS continued Height Wheel Base Tractor Tread Width Tractor MB 39 in 99 cm 38 1 2 in 98 cm 29 3 4 in 76 cm MOWER DECK Width of Cut Cutting Height Height Adjustment Blade Size 36 in 91 cm SD Model 42 in 107 cm SD Model 48 in 122 cm SD Model 56 in 142 cm SD Model Deck Suspension 36 42 48 or 56 in 91 107 122 or 142 cm 1 to 4 in 3 to 10 cm 7 Positions 1 2 in 1 cm Increment Hitch Pins Installed in Multi Position Deck Support 20 in 51 cm Two 2 Clockwise Rotating Blades with a 4 in 10 cm Center Overlap 22 in 56 cm Two 2 Clockwise Rotating Blades with a 2 in 5 cm Center Overlap 25 in 64 cm Two 2 Clockwise Rotating Blades with a 2 in 5 cm Center Overlap 20 in b1 cm Three 3 Clockwise Rotating Blades with a 2 in 5 cm Center Overlap Torsion Flex Frame with Caster Wheels and Counterweight Springs CURB WEIGHT Approximate Tractor Only SD Tractor and 36 in SD Deck SD Tractor and 42 in SD Deck SD Tractor and 48 in SD Deck 564 Ib 256 kg 709 Ib 322 kg 744 Ib 337 kg 769 Ib 349 kg DRIVE BELTS Engine PTO Ground Drive Walker P N 423
19. ANSMISSION Refer to Engine Group z F013 F171 BO R8 RM Refer to Body Chassis Assembly Effective Date 10 01 04 Use only genuine Walker amp replacement parts 57 58 ENGINE GROUP PART DESCRIPTION NO PART DESCRIPTION NO NO NO REQD NO NO REQD Engine Assembly Fasteners 1 4845 Rubber Bumper 1 0 x 625 2 F002 10 24 Keps Nut 6 2 4104 1 Body Support 1 F004 1 4 20 Keps Nut 6 3 4013 1 Muffler Guard 1 F005 1 4 20 ESNA Nut 1 4 4104 9 Heat Shield Aluminum 1 F009 5 16 18 Whiz Locknut 6 5 NS 18 HP Engine Briggs amp Stratton 350447 1 F025 10 24 x 3 8 PPHMS 4 F032 1 4 20 x 3 4 Hex Bolt 2 Fuel Tank Assembly F037 10 24 x 5 8 PTH Screw 1 F050 1 4 SAE Washer 9 6 7840 Hose Clamp 1 5 16 to 2 1 4 1 F164 10 24 x 1 4 x 3 8 SHL Bolt 1 7 4087 Air Intake Hose 1 1 2 ID x 2 1 4 1 F179 1 4 20 x I Hex Bolt 2 8 4010 5 3 8 NPT Street L 1 F184 1 4 20 x 1 2 Hex Bolt SS 2 9 5020 Fuel Filter 1 F185 1 4 Internal Star Lock Washer 2 10 5879 3 Hose Clamp 1 2 2 F201 1 4 Belleville Spring Washer 2 11 5086 5 Hose 1 4 x 32 1 F255 5 16 18 x 1 1 2 Hex Bolt 2 12 5086 Fuel Line In Tank P U 1 F316 5 16 18 x 1 3 4 Hex Bolt 2 13 5083 1 Bushing Rubber Fits 5083 1 F392 1 4 20 x 1 Set Screw SS Cup Point 2 14 5083 2 Tank Tube Elbow 1 15 5082 2 Fuel Cap Seal 1 Service Part Only 16 5082 Fuel Tank Cap 1 Includes Item 15 17 4046 Fuel Tank 3 0 Gal Gas 1 Fuel Cap Centered Includes
20. ARRANTIES ARE EXCLUDED Some states do not allow limitations on how long an implied warranty lasts so the above limitations may not apply to you WALKER WILL NOT BE LIABLE FOR ANY INCIDENTAL CONSEQUENTIAL OR SPECIAL DAMAGES AND OR EXPENSES IN CONNECTION WITH THE PURCHASE OR USE OF THE MOWER Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation s or exclusion s may not apply to you Only the warranty expressed in this limited warranty shall apply and no dealer distributor or individual is authorized to amend modify or extend this warranty in any way Accordingly additional statements such as dealer advertising or presentations whether oral or written do not constitute warranties by Walker and should not be relied upon This warranty gives you specific legal rights and you may also have other rights which vary from state to state 69 Sound Model MB Vibration Model MB Sound Test Vibration Level Vibration levels at the operators handles Lwa Sound test conducted was in accordance were measured in the vertical lateral and with 79 113 EEC and was performed on 14 longitudinal directions using calibrated 93 July 04 under the conditions listed vibration test equipment Tests were performed on 14 July 04 under the conditions listed LpA General Condition Clear 86 Temperature 50 F 910 General Condition Clear Wind Speed 5 mph lt 8 kmh Tempera
21. DO NOT allow open flames or sparks near the machine while performing main tenance or refueling DO NOT smoke while working with fuel Wipe up spilled gasoline immediately and completely Expand and slide clamps on either side of the filter away from filter and pull fuel lines off filter Replace filter REPLACING REPAIRING Blade Overload Shear Bolts The cutting blade is keyed to the blade hub by two 2 shear bolts 10 24 x 5 8 in stainless steel ma chine screws These bolts are designed to shear and protect the blade drive gearbox from damage if the blade encounters a shock load Cutting Blade Shear Bolts 1 Cutting Blade Shear Bolts NOTE Tightening the 5 8 18 blade mounting nut to 60 ft lb 81 3 N m is also important for proper shock load protection It is important to not over tighten the mounting nut since this defeats over rides the function of the shear bolts If these bolts shear remove the blade and install new bolts Refer to CHECKING SERVICING in this section for Sharpen Mower Blades which describes the blade removal and installation procedure After reinstalling the blade check blade timing by moving blades through one 1 complete revolu tion Make sure blade tips pass clear of each other If timing is incorrect contact your Walker Dealer PTO Shear Pin The PTO drive shaft connection to the deck gearbox hasashear pinto provide shock load protection to the mower deck drive This
22. Fits P N 5942 2 F029 1 4 20 x 1 2 Hex Bolt 1 7 5942 Safety Switch NO 2 F031 1 4 20 x 5 8 Hex Bolt 1 8 5975 5 Wire Clip Self Mount 2 F034 5 16 18 x 3 4 Hex Bolt 1 9 8990 1 Hourmeter Sendec 1 F061 1 4 Star Lock Washer 1 10 5835 Cable Clamp 3 4 1 F086 10 SAE Washer 4 11 6923 Battery Cable 1 F349 Washer 835 ID 1 122 OD SS 1 12 49404 Battery Cable 15 1 F374 10 24 Hex Nut 2 13 7832 Wire Clamp 13 16 x 10 1 14 4940 3 Starter Solenoid Cable 6 1 15 4929 Starter Solenoid 1 16 4910 Battery CCA 220 1 17 7854 Plastic Tip Red 1 18 8960 2 Ignition Key 1 Set 1 19 4940 Wire Harness 1 Use only genuine Walker amp replacement parts Effective Date 10 01 04 ELECTRICAL ASSEMBLY Refer to BodylChassis Assembly Refer to Main Component a Power Transmission amp Referto 7 Ma 18 Hydrostatic Ground 7 N F349 Assemblies 17 f 99 19 VP Refer to BodylChassis 1 Assembly 14 END VIEWS ARE SHOWN FROM BACK OF PLUG d DETAIL A DETAIL DETAIL C DETAIL D DETAIL E DETAIL F DETAIL G DETAIL H DETAIL EL BK YE REDVELESCSIPURWHT pur 7 0 BK r D m PR WAT D D qd DK BRNAWHT RED BLK RED YEL BLK 3 AN PUR RED 1 SREDIWHT PUR BU BLK YE PUR PURIWHT BRNWHT GRA FEES REDWHT BLK rM BRN Effective Date 10 01 04 Use only genuine Walker replacement parts 65 WIRING SCHEMATIC WALKER
23. Leveling PREOPERATING CHECKLIST Operating Instructions CONTROL IDENTIFICATION LOCATION AND FUNCTION Ignition Switch Engine Choke Engine Throttle Forward Speed Control FSC Steering Levers PTO Switch Parking Brake Transaxle Lockout Rods Hourmeter STARTING THE ENGINE ADJUSTING GROUND SPEED AND STEERING ENGAGING THE MOWER STOPPING THE MACHINE ADJUSTING CUTTING HEIGHT TRANSAXLE LOCKOUTS RECOMMENDATIONS FOR MOWING RECOMMENDATIONS FOR TILT UP DECK OPERATION TRANSPORT Maintenance Instructions MAINTENANCE SCHEDULE CHART IMPORTANT TIPS FOR CARE OF THE BRIGGS amp STRATTON ENGINE Fuel System Starting Cooling System Air Cleaner Oil LUBRICATION Engine Oil Engine Break In Oil Checking Engine Crankcase Oil Level ___ Changing Engine Crankcase Oil Oil Filter Grease Fitting and Oil Point Lubrication __ Mower Deck Gearbox Lubrication Transaxle Lubrication CLEANING Engine Air Cooling System Air Cleaner System Grass Buildup in Mower Housing Transaxle Cooling Fins CHECKING SERVICING Security of Air Cleaner System Battery Cleaning the Terminals Charging the Battery Tire Pressure Sharpen Mower Blades Drive Belts Mower Deck Gearbox Oil Seals Spark Plugs Breaker Points Fuel Lines and Clamps Blade Brake Action REPLACING REPAIRING Drive Belts Engine PTO Belt Ground Drive Belt Fuel Filter Blade Overload Shear Bolts PTO Shear Pin Mower Blades
24. TH Screw 2 23 4102 Body Guide 4 F048 1 2 SAE Washer 2 VEN F093 5 1618 x 1 Hex Bolt 1 24 1222 Extension Spring 1 4 x 3 1 en F113 5 16 18 x 5 16 Set Screw 2 25 7854 Plastic Tip Red 1 26 7383 1 Body Latch Hook 1 F116 1 4 20 x 1 1 4 Hex Bolt 1 57 946 Gas Tank Mount 1 CAU 1 28 4145 Body Support Rod 1 127 1 16 x 1 2 Cotter Pin 1 29 4145 1 Spring 4 F128 10 24 x 3 8 PTHMS 5 30 52235 Extension Spring 1 4 x 5 12 1 PCM F182 1 4 x 5 8 x 1 8 Washer 2 Tail Wheel Assembly F190 10 Internal Star Lock Washer 3 F246 1 4 20 x 1 2 PTHMS 10 Includes Item F113 Bang F292 1 2 13 x 8 1 2 Hex Bolt GR 2 1 33 5420 2 Tail Wheel Fork 1 295 3 16 x 1 1 2 Split Spring Pin 2 34 5037 1 Bearing Tail Wheel 2 F341 Coil Roll Pin 7 64 x 9 16 1 35 5035 Tail Wheel amp Tire Assembly 13 x6 50 6 1 F342 3 16 Conical Washer 2 5035 1 Tail Wheel Tire 13 x 6 50 6 F393 3 8 16 x 3 1 4 Hex Bolt 4 5036 Tail Wheel amp Hub 6 x 4 5 Service Part Only Pe ie l Item used on Tractor S N 2004 68441 thru 68541 Replace Deck Support Arm amp Hitch Assemblies ment requires update kit 37 5830 Grease Fitting 1 used after Tractor S N 2004 68541 38 4300 9 Deck Support Arm Mount 1 A Includes Item 37 Use only genuine Walker replacement parts kit 5747 Complete Tilt Up Latch Assembly Kit available by ordering Effective Date 10 01 04 BODY CHASSIS ASSEMBLY F029 g 42
25. The maximum recommended side slope operating angle is 20 degrees or 33 grade A Maximum Recommended Side Slope Do Not Operate on Steep Slopes Maximum Recommended Side Slope RECOMMENDATIONS FOR TILT UP DECK OPERATION TRANSPORT To avoid potential deck and or tractor damage while using the tilt up deck the following recommenda tions are offered Do not move the tractor with the deck in the tilt up position since both the roller wheels on the back of the deck may be damaged by moving the tractor The tilt up configuration should only be used when the tractor is parked The tractor body should never be tilted for ward with the deck in the tilt up position This can cause the deck to unhook from the tractor and fall with considerable force potentially causing deck or tractor damage and or bodily injury When transporting a tractor with the deck in the tilt up position on a truck or trailer the deck should be secured to the vehicle with a strap or rope stop vertical movement This will prevent the deck from bouncing on the rear roller wheels caus ing breakage This will also prevent the deck from unhooking from the tractor and falling potentially causing deck or tractor damage Damage to other items parked in front of the deck may also occur 33 34 Maintenance Instructions CAUTION Maintenance procedures requiring special training or tools should be performed by a trained technici
26. Walker Manufacturing cannot predict every poten tially dangerous situation Therefore items labeled as such in this manual do not cover all conceivable situations Any person using procedures tools or control techniques not recommended by Walker Manufacturing must take full responsibility for safety The Walker Rider Lawnmower has been designed with many safety features to protect the operator from personal harm or injury However itis necessary for the operator to use safe operating procedures at all times Failure to follow safety instructions contained in this manual may result in personal injury or damage to equipment or property If you have any questions concerning setup opera tion maintenance or safety please contact your authorized Walker Mower Dealer or call Walker Manufacturing Company at 970 221 5614 BEFORE OPERATING 1 Read and understand the contents of this Owner s Manual before starting and operat ing the machine Become thoroughly familiar with all machine controls and how to stop the machine and disengage the controls quickly Replacement Owner s Manuals are available by sending the Model and Serial Number to Walker Manufacturing Company 5925 East Harmony Road Fort Collins CO 80528 Never allow children to operate rider mower Do not allow adults to operate without proper instruction Clear the area to be mowed of any foreign objects which may be picked up and thrown by cutter blades Pick up all s
27. Walker Rider Lawnmowers OWNER S MANUAL Safety Assembly Operating and Maintenance Instructions and ILLUSTRATED PARTS MANUAL Model MB 18 HP Please Read and Save These Instructions Effective Date 10 01 04 For Safety Read All Safety and Operation P N 4000 1 Instructions Prior to Operating Machine Price 5 00 Foreword Thank you for purchasing a Walker mower Every effort has been made to provide you with the most reliable mower on the market and we are sure you will be among our many satisfied custom ers If for any reason this product does not perform to your expectations please contact us at 970 221 5614 Every customer is important to us Your satisfaction is our goal Please read this manual thoroughly This manual is to be used in conjunction with the engine manufacturer s manual for the specific engine on the mower model you have purchased Before you operate your new mower please read this entire manual Some of the information is crucial for prop er operation and maintenance of this mower it will help protect your investment and ensure that the mower performs to your satisfaction Some of the information is important to your safety and must be read and understood to help prevent possible injury to the operator or others If anything in this manual is confusing or hard to understand please call our service department at 970 221 5614 for clarification before operating or servicing this mower This
28. an MAINTENANCE SCHEDULE CHART RECOMMENDED SERVICE INTERVALS MODEL MB More often in extremely dusty or dirty conditions see notes about air cleaner element under IMPORTANT TIPS FOR CARE OF BRIGGS amp STRATTON ENGINE Change engine oil and filter after first 8 hours of operation of a new engine break in period Service Item Daily ous HUS our Yearly Pan Check Engine Crankcase Oil Level x 36 Check Clean Engine Air Cooling System X 41 Clean Grass Buildup Under Deck X 42 Service Mower Blades X 44 Check Security of Air Cleaner System X 43 Lubricate Grease Fittings and Oil Points X 37 Check Transaxle Fluid X 40 Check Tire Pressure X 44 Check Drive Belts Engine PTO Ground Drive X 45 Check PTO and Deck Gearbox Oil Seals X 45 Inspect Air Filter Paper Element X 41 Clean and Re Oil Air Filter Foam Element x 41 Change Engine Crankcase Oil x 36 Change Engine Oil Filter x 36 Check Security of Drive Tire X 22 Mounting Nuts 75 85 ft lbs Clean Transaxle Cooling Fins X 43 Replace Fuel Filter x 49 CAUTION When performing maintenance with the mower body raised a safety prop should be installed from back of body to chassis frame fail safe protection in case of fail ure of body lift support Maintenance Instructions IMPORTANT TIPS FOR CARE OF THE BRIGGS amp STRATTON ENGINE Fuel System Fuel must
29. arts Do not wear jewelry or loose clothing Always use the proper engine service manual when working on the engine Unauthorized maintenance operations modifications to the engine may result in unsafe operating conditions Altering the equipment or engine in any manner which adversely affects its operation perfor mance durability or use will VOID the warranty and may cause hazardous conditions Never attempt to disconnect any safety devices or defeat the purpose of these safety devices Do not change the engine governor settings or overspeed the engine The governor has been factory set for maximum safe engine operating speed Usegenuine factory replacement parts Sub stitute parts may result in product malfunction and possible injury to the operator and or others Use care when charging the battery or per forming maintenance on the battery and electrical system a sure the battery charger is unplugged before connecting or disconnecting cables to the battery Charge the battery in a well ventilated space so gases produced while charging can dissipate Make sure the battery vents in the caps are open Keep sparks flames and smoking materi als away from the battery at all times To avoid sparks use care when removing bat tery cables from posts Disconnect both battery cables before un plugging any wiring connectors or making repairs on the electrical system IMPORTANT Keep all appl
30. be clean free from water dirt and or ganic material Clean the fuel filter on a regular basis and when contamination is suspected or found in the fuel Starting e Start engine with the throttle advanced off idle 1 4 to 1 2 throttle This will aid starting especially in cold weather Keep the battery fully charged e Match crankcase oil viscosity to the ambient tem perature allowing the engine to crank faster and start easier e Allow engine to run at idle for a few seconds be fore stopping engine to avoid run on or backfiring Cooling System e Keep engine air intake screen and cylinder head fins free of grass clippings chaff and dirt Inspect intake screen and cooling fins for cleanliness and damage Operate the engine at full speed when mowing This will allow the engine to produce full horsepower and move more cooling air through the engine cool ing fins BRIGGS amp STRATTON TIPS Air Cleaner Use only Briggs amp Stratton air cleaner elements Aftermarket elements may not seal in the air cleaner housing allowing dirt to enter the engine Also af termarket filters often skimp on the filtration media and require more frequent cleaning and replace ment e DO NOT overservice or frequently disturb the air filter A dirty air filter actually cleans better than a new one Changing and cleaning the filter too of ten can actually reduce filter efficiency and increase the opportunity for trace
31. both steering levers backward to the NEUTRAL PARK posi tion tractor not moving and then moving the FSC lever to the NEUTRAL PARK position NOTE f the tractor creeps forward or back ward with the FSC lever in the NEUTRAL PARK position the transmission control needs to be adjusted Contact your Walker Dealer ENGAGING THE MOWER 1 Set the engine throttle at about 1 2 speed DO NOT attempt to engage the blade clutch at high engine speeds This will drastically short en drive belt and clutch life Use only moderate engine speed when engaging the blade clutch Pull up the blade clutch toggle switch to engage the mower blades A safety interlock switch seat switch will cause the engine to stop if the blade clutch is engaged and the operator is not in the seat The function of this switch should be checked by the operator rais ing off the seat and engaging the blade clutch the engine should stop If the switch is not working it should be re paired or replaced before operating the mower DO NOT disconnect the safety switches they are for the operator s pro tection IMPORTANT DO NOT engage the blade clutch when transporting the mower across drives side walks loose materials etc DO NOT engage the blade clutch with the PTO shaft disconnected the mower deck removed from tractor Engaged Position Blade Clutch Disengaged If the cutting blades strike a stationary object while mowing stop the mower im me
32. ce provided Tractor Model No Tractor Serial No Deck Serial No Engine Model No Engine Serial No Date of Purchase Fill In By Purchaser General Information Serial Number if E WALKER Mower Deck Serial Number Location ENGINE SERIAL NUMBER LOCATION The Briggs amp Stratton engine model type and code numbers are located on the left hand of the engine shroud For the mower model covered by this man ual contact a Briggs amp Stratton servicing dealer Engine Serial Number Location SERVICING OF ENGINE AND DRIVETRAIN COMPONENTS The detailed servicing and repair of the engine tran saxle and gearboxes not covered in this manual Only routine maintenance and general service instructions are provided For the service of these components during the limited warranty period it is important to find a local authorized servicing agent of the component manufacturer Any unauthorized work done on these components during the war ranty period may void the warranty If you have any difficulty finding an authorized outlet or obtaining war ranty service please contact our Service Department for assistance Walker Manufacturing Company 5925 E Harmony Road Fort Collins CO 80528 1 970 221 5614 Service manuals are available for each of these components from their respective manufacturers as follows Briggs amp Stratton Briggs amp Stratton Engine 800 233 3723 24 hou
33. cement parts 53 54 BODY CHASSIS ASSEMBLY PART DESCRIPTION NO PART DESCRIPTION NO NO NO NO REQD Seat Assembly 39 4431 Deck Support Arm LH 1 40 5775 2 Hitch Pin 6 2 1 5103 Seat 1 2 7203 Seat Spring Plate 1 41 4430 Deck Support Arm RH 1 3 7223 Compression Spring 1 2 x 1 2 Tilt Up Latch Assembly 4 T045 Rubber Bumper 1 375 x 63 2 42 5847 Plastic Ti astic Tip 1 5841 Retainer Washer 3 8 x 1 1 4 6 43 574420 Spring Arm Tilt Up Latch 1 6 7846 Washer 3 8 x 1 1 4 x 1 8 4 7 17204 Shoulder Bolt Seat Mount 2 pong 8 7405 Shock ti 1 1 4x2 2 45 5744 15 Compression Spring 3 8 x 5 8 1 5 BORNE CET A 46 5744 13 Mount Angle LH 1 Body Assembly 47 5744 12 Hook Tilt Up Latch 1 9 4105 Rear Body 4 48 5744 14 Mount Angle RH 1 10 4100 Front Body 1 Fasteners 11 4190 Insulation Foam Pad 1 12 4107 9 Upper Guard Kit 1 p Pope M 13 4107 3 Clutch Guard m 14 4107 2 Upper Guard je E 15 5845 Rubber Bumper 1 50 x 1 25 2 ES Ta b 16 5180 Edge Molding Lever Opening 2 F016 4 2 13 Self Lockina Nut 1 17 45043 19 1 Besser ha F020 5 16 18 ESNA Nut 1 Chassis Assembly F023 10 24 ESNA Nut 2 18 4910 2 Battery Hold Down Plate 1 b CMM i UE 028 10 24 x 3 4 PPHMS 1 19 5747 10 Rubber Mat No Hole 3 x 6 1 20 4647 Tail Weight 2 029 1 4 20 X 1 2 Hex Bolt 4 21 43008 Chassis Guard Lower Front 1 a SB X Bolt E 22 4300 Chassis Frame 4 F037 10 24 x 5 8 P
34. ck side discharge shield by positioning the shield hinge lug in front of the deck mount and fastening with two 3 8 16 x 1 1 4 in bolts 3 8 16 ESNA nuts and 3 8 in wave spring washers The wave washers fit between the two hinging surfaces Tighten the nuts until the shield moves freely but is not loose DO NOT operate the machine without the grass deflector chute attached and in the lowest possible position Deck Discharge Shield Installation 18 Assembly Instructions PTO Shaft Guard Installation Position the shaft guard as shown and mount with two 1 4 20 x 1 2 in bolts PTO Shaft Guard Installation Tilt Up Roller Wheel Installation NOTE A 2 1 2 diameter tilt up roller wheel P N 9772 is required for decks installed on the Model MB tractor Mount the two 2 tilt up roller wheels on the brack ets on the rear skirt of the deck housing using the P N 8490 axle bolt 3 8 in wave spring washer and 3 8 16 in Whiz locknut Tighten the axle bolt until the wheel rolls freely but is not loose Roller Wheel Installation Mower Deck Installation on Tractor Deck Installation 1 Lightly grease each deck support arm 2 on the tractor Refer to Mower Deck Installation photo for location of deck support arm Engage the deck carrier frame tube sockets on the tractor support arms refer to PTO Shaft Guard Installation photo for socket location Slide the deck onto the support arms approxi mately 3 in 76 mm
35. dered as a factory installed option or for dealer installation Narrow Drive Tires are used when installing a 36 Parking Brake Assembly Deck Contact your Walker dealer 31 7406 1 Handle Grip Red 1 Item used on Tractor S N 2004 68441 thru 68541 32 4406 1 Parking Brake Arm Assembly 1 33 4406 2 Brake Actuator Pull 1 34 5665 Compression Spring 1 2 x 1 1 35 9406 4 Clevis Half 1 36 9406 3 Clevis Half Spring Side 1 37 7523 2 Clevis Pin 1 4 x 5 8 1 38 5225 3 Return Spring 1 2 x 1 63 1 39 4406 7 Parking Brake End Mount 1 40 4406 3 Parking Brake Mount Assembly 1 41 4407 1 Park Brake Actuator Link 2 Use only genuine Walker replacement parts Effective Date 10 01 04 HYDROSTATIC GROUND DRIVE ASSEMBLIES Refer to Engine Group F151 F034 Refer to Body Chassis Assembly F015 Effective Date 10 01 04 Use only genuine Walker replacement parts 61 STEERING CONTROL ASSEMBLIES ITEM PART DESCRIPTION NO ITEM PART DESCRIPTION NO NO NO REGD NO NO REQD Steering Lever amp FSC Assemblies Fasteners 5862 FSC Knob 2 4170 FSC Lever Assembly F003 1 4 28 Hex Nut 2 Includes Item 3 F004 1 4 20 Keps Nut 2 3 5830 Grease Fitting 2 F005 1 4 20 ESNA Nut 2 4 5214 5 Ball Joint 5 16 24 LH W O Stud 1 F008 5 16 24 Keps Nut 5 5 4173 FSC Rod 1 F009 5 16 18 Whiz Locknut 19 6 5214 4 Ball Joint 5 16 24 W O Stud 1 F010 5 16 24 ESNA Nut 2 7 4219 Extension Spring 3 4 x 6
36. diately disconnect the spark plug wires lift the deck and inspect the deck and blades thoroughly for damage Make sure that the blade timing has not been disturbed the blades should be at 90 de grees to each other Refer to REPLAC ING REPAIRING the Blade Overload Shear Bolts in Maintenance Instructions if blades are out of time Also make sure the blade retaining nuts are torqued to 60 ft lb 81 3 N m Operating Instructions STOPPING THE MACHINE 1 Slow the engine to idle put the throttle in the IDLE position Pull the steering levers to the NEUTRAL PARK position and then move the FSC lever backward to the NEUTRAL PARK position Disengage the blade clutch IMPORTANT DO NOT disengage the blade clutch with high engine speed above 1 2 throttle since the brake action on the blade drive will cause premature wear of the Engine PTO Belt and electric clutch brake A brake stops the cutter blades from free wheeling within five 5 seconds after dis engaging the clutch If the brake system malfunctions and the blades do not stop within five 5 seconds the brake should be repaired or replaced before operating the mower Contact your Walker Dealer Turn the ignition switch OFF Remove the key from the ignition switch when leaving the mower unattended This will prevent children and inexperienced operators from starting the engine Engage the parking brake IMPORTANT The transaxles lock to prevent the mowe
37. djustment decal on the deck gearbox cover PERFORM ANY ADDITIONAL PROCEDURES called for on the MAINTENANCE SCHEDULE CHART in Maintenance Instructions 23 24 Operating Instructions CONTROL IDENTIFICATION LOCATION AND FUNCTION Before operating the mower become fa miliar with the location and function of all operator controls Knowing the location function and operation of these controls is important for safe and efficient opera tion of the mower Ignition Switch The ignition switch is located on the right front of the body and is used to start and stop the engine The switch has three positions O is the OFF position RUN is the position the key returns to after starting and S is the START position When starting the engine turn the key clockwise to the S position Do not hold the key in the S position longer than 10 Parking Brake Forward Speed Control FSC Body Latch Ignition Switch seconds If the engine does not start return the key to the O position for at least 60 seconds before making a restart attempt Prolonged cranking can damage the starter motor and shorten battery life Release the key when the engine starts and it will return to the RUN position To stop the engine rotate the key counterclockwise to the O position Ignition Switch Steering Levers Hourmeter Blade Clutch Ai PTO W Operating Controls Operating Instructions En
38. e to assure safety Reinstall the blades following procedure from Sharp en Mower Blades instructions If blades are re placed always use Walker original equipment blades to ensure safety and optimum performance The quality and performance of replacement blades offered by other manufacturers cannot be guar anteed they could be dangerous ALWAYS use genuine factory replacement parts Substitute parts CAN result in prod uct malfunction and possible injury to the operator Maintenance Instructions ADJUSTMENTS Steering Levers An adjustment range of approximately 3 inches is available on the steering levers the levers can be ad justed forward or aft depending on the arm length of the operator The levers can be adjusted by loosen ing the locknut at the pivot point and the locknut hold ing the lever in position in the adjustment slide Adjust levers into most comfortable position and tighten both locknuts i Locknut Adjustment Position Slide Steering Lever Adjustment ADJUSTMENTS ELECTRICAL SYSTEM Tilt Up Deck Adjustable Stop When the carrier frame hinge joint is properly ad justed the deck lock levers should move in and out of the engaged and disengaged positions freely All four hitch pins used for height adjustment should sit flush on the washers above the deck pin bushing On a level surface if any pin is sticking up likely the front pins tighten the opposite side or loosen the same side to lowe
39. e of too much buildup on the baffling and housing Lower the deck to the normal operating position and re engage the deck lock levers Do not operate machine with deck tilt up pivot joint unlocked Maintenance Instructions Transaxle Cooling Fins Keeping the cooling fins on the transaxles clean and free of obstruction is essential to avoid overheat ing the transmission fluid and shortening transmission life The cooling fins should be checked every 100 hours and cleaned if necessary To clean the fins use compressed air and or a pres sure washer The cooling fins extend all the way around the housing the fins underneath need to be clean as well as the more visible fins above Also pay close attention to the area under the drive pulley IMPORTANT In case an oil leak develops on the input shaft the cooling fan blowing dusty air and oil on the transmission will quickly pack the cooling fins with oily dirt If this condition occurs contact your dealer immediately to avoid overheating and dam aging the transaxle An additional procedure in maintaining transaxle cooling is to inspect the cooling fans Replace the fan s if blades are missing or damaged Transaxle Cooling Fins CHECKING SERVICING To prevent accidental starting of the en gine when servicing or adjusting the ma chine remove the key from the ignition switch and disconnect the spark plug wires CLEANING CHECKING SERVICING Security of Air C
40. e starts NOTE The choke may not be required if the engine is warm IMPORTANT DO NOT crank the engine con tinuously for more than 10 seconds at atime If the engine does not start turn the key to the OFF position and allow a 60 second cool down period between starting attempts Failure to fol low these guidelines can damage the starter motor and shorten battery life After the engine starts gradually move the choke to the OFF position keeping enough choke on to allow the engine to run smoothly as it warms up As soon as possible move the choke to the OFF position IMPORTANT Make sure the choke is in the OFF position during normal engine operation running with the choke in the ON position CAN damage the engine ADJUSTING GROUND SPEED AND STEERING Learn to START STOP and MANEUVER the mower in a large open area If the operator has not operated a machine with LEVER STEERING OR DUAL TRAN SAXLES steering and ground operation should be learned and practiced until the operator is completely comfortable han dling the machine BEFORE ATTEMPTING TO MOW Keep feet on footrest at all times when the machine is moving Operating Instructions In case either of the transmission drive belts break during operation and if the machine is on a slope the machine will freewheel down the slope To maintain control immediately 1 Release the steering levers and simultaneously 2 Move the FSC to the NEUTRAL PARK position
41. ear or damage blades should be re placed for reasons of safety and performance of the machine An excessive amount of the flat section of the blade has been ground away removed when the blade is sharpened Replace the blade when less than a 3 4 in 19 mm flat section remains at the blade tip REPLACING REPAIRING e Examine ends of the blade carefully especially the intersection where the flat section of the blade turns up to form the wing tip refer to Mower Blade Pro file for Sharpening illustration in Sharpen Mower Blades instructions Since sand and abrasive ma terial can wear metal away in this area the blade should be replaced when metal thickness has worn to 1 16 in 1 6 mm or less When blades are operated over sandy soil and if blades are allowed to wear a slot may be worn into the wing tip of blade Eventually a piece of the blade may break off creating a serious potential for injury or damage Check the blades for straightness by marking blade tip position inside the deck housing and then ro tating the opposite end of the blade to the same po sition and comparing If the difference in blade tip track is more than 1 8 in 3 mm the blade is bent and should be replaced e Inspect the blade surface especially in formed areas for cracks Replace the blade if any cracks are found DO NOT try to straighten a blade that is bent NEVER weld a broken or cracked blade ALWAYS replace with a new blad
42. ecting or discon necting cables to the battery 43 44 Maintenance Instructions Check the battery charge by measuring the specific gravity of electrolyte if specific gravity is less than 1 225 the battery will need to be charged as follows e Charge the battery at 15 amps for 10 minutes DO NOT exceed 20 amps maximum recommended charging rate Charge until specific gravity is at least 1 250 Total charging time should not exceed one 1 hour Tire Pressure Inflate tires to pressures shown below Deck Caster Wheel 20 PSI 137 kPa Drive 15 PSI 103 kPa Rear 20 PSI 137 kPa Sharpen Mower Blades Check mower blade s for straightness sharp ness condition of the cutting edge and balance every 10 hours of operation or more often when mowing abrasive type grass or operating on sandy soils Replace blades if worn bent cracked or otherwise damaged refer to REPLACING REPAIRING the Mower Blades in this section Use the following procedure to check and sharpen blades NOTE Keep blades sharp cutting with dull blades not only yields a poor mowing job but slows the cutting speed of the mower and causes extra wear on the engine and blade drive by pulling hard 1 Stop the engine remove ignition key and dis connect the spark plug wires before raising the mower deck to service blades Raise the deck and secure it in the tilt up posi tion refer to Deck Secured in Tilt Up Position photo in CLEANING of Gra
43. ent has stopped If the brake is working properly all rotation will stop five 5 seconds after disengagement of the clutch Ifthe brake system malfunctions blades do not stop in five 5 seconds repair the brake before operating the mower Ground Drive Belt CHECKING SERVICING REPLACING REPAIRING REPLACING REPAIRING To prevent accidental starting of the engine when replacing parts or repairing the machine remove the key from the ignition switch and disconnect the spark plug wires IMPORTANT ALWAYS use genuine factory re placement parts Substitute parts CAN result in product malfunction and possible injury to the oper ator and or others Drive Belts There are two 2 individual belts on the machine Engine PTO Belt e Ground Drive Belt The belts may be removed and replaced using the procedures described on the following pages Engine PTO Belt Belt Locations Maintenance Instructions REPLACING REPAIRING Engine PTO Belt Remove Bolts to Access 1 To remove the engine PTO belt Engine PTO Belt a Remove belt guard from underneath muf NY fler Refer to Remove Belt Guard photo Relax the belt by depressing the spring loaded idler arm Roll the belt off the pulley and remove the belt Electric Idler Arm Clutch Idler NN Tension QW Spring 2 Push Idler Pulley to Relax Belt 9 Y PTO Drive Pulley Belt Engine PTO Belt Disengaged 2 Reverse the removal p
44. for a smooth rolling turn one wheel roll ing forward while the other rolls backward Pull Steering Levers with Left Hand Practice maneuvering the mower until you can make it go exactly where you are aiming Remember for an emergency stop or in case of loss of control machine movement can always be stopped quickly by pulling the Forward Speed Control into the NEU TRAL PARK position Move the FSC out of NEUTRAL PARK position to the desired forward speed DO NOT hold for ward on steering levers It is not necessary to hold the FSC lever in position since a friction lock maintains the selected lever position and 2 C forward travel speed Keep Feet on Footrest when Moving Correct Operator Hand Position on the Controls 30 Operating Instructions 3 Reverse direction of the mower by pulling both levers backward NOTE Smooth action on the steering levers will produce smooth mower operation Remem ber to keep the engine and ground speed slow until learning the control response The FSC may be adjusted forward for faster ground speed and backward for slower ground speed When mowing ground speed should be adjusted to match the load on the cutter blades i e as the engine pulls down in heavy cutting pull back on the FSC lever to reduce ground speed Adjusting ground speed helps maintain a balance between engine power and blade speed for high quality cutting action Stop ground travel by pulling
45. g Installation photo 20 Assembly Instructions Deck Leveling 1 Position mower a smooth level surface Set the cutting height to the highest position 4 in 102 mm for easy access under the deck to measure blade height Refer to ADJUSTING CUTTING HEIGHT in Operating Instructions NOTE A block of wood cut 4 in 102 mm high is a convenient gauge to measure blade height above ground during the leveling process 4 amp WARNING The machine must be shut off during this procedure 4 in 102 mm Wood Block Should not vary more than 1 8 in 3 mm side to side Deck Leveling Check the side to side level Rotate each blade sideways and measure the distance from blade tip to ground on each side If measurements vary more than 1 8 in 8 mm add a washer shim under the deck support pins on the low side to level the deck Check the front to rear level Rotate the blades to point forward Measure the distance from blade tip to ground on the front and rear The rear of the blade should be 1 8 to 1 4 in 3 to 6 mm higher than the front of the blade shim the rear or front deck support pins equally to achieve at least 1 8 in 3 mm difference NOTE The mower deck and support frame are jig welded within normal tolerances very lit tle if any shimming should be required to level the deck Tire pressure will influence the level ness of the deck Check the tire pressure as a possible cause of the dec
46. gine Choke The choke control lever black knob is located on the left side of the seat To start a cold engine move the choke control forward to the ON position After engine starts move choke control toward the OFF position keeping enough choke to allow the engine to run smoothly as itwarms up As soon as possible move the choke to the OFF position A warm engine requires little or no choke for starting IMPORTANT Make sure the choke is in the OFF position during normal engine operation running with the choke in the ON position CAN damage the engine Engine Throttle The throttle control lever red knob is located on the left side of the seat and is used to control engine speed Moving the lever forward toward the FAST position increases engine speed moving it back ward toward the IDLE position decreases engine speed Choke and Throttle Location Forward Speed Control FSC Forward Speed Control FSC has two functions One is to set forward travel speed and the other is to establish the NEUTRAL PARK position When the FSC lever is moved into the FORWARD position a friction lock holds any forward speed setting from Oto 7 mph Oto 11 3 km h The ground speed is pro portional to the lever position the further the lever is advanced forward the faster the tractor moves It is not necessary to hold the FSC in position since the friction lock maintains the selected lever position Pulling back on the steering levers overr
47. icable manuals immediately accessible to anyone who may operate or service this machine Safety Instructions SAFETY CONTROL AND INSTRUCTION DECALS Safety Control and Instruction Decals are installed on the machine if any are missing illegible or damaged a replacement should be ordered and installed before putting the machine into operation The Decal Part Number is listed below and in the Parts Section TO SIART DESIGNED AND BUILT BY TRANSMISSION MUST BE WALKER MFG COMPANY IN NEUTRAL AND BLADE FORT COLLINS CO 80528 CLUTCH DISENGAGED ROTATING CUTTING BLADES 4 Fast DO NOT PUT HANDS OR FEET UNDER OR ian INTO ANY PART OF THIS MOWER DECK CONTROL THROTTLE OR DISCHARGE CHUTE SP DLE OBJECTS MAY BE THROWN FROM MOWER FAST X gt CLEAR LAWN OF DEBRIS AND OBJECTS i gt DO NOT MOW WITH BYSTANDERS IN AREA AWARNING 5808 READ AND UNDERSTAND SLOW gaye Q NEUTRAL PARK TO GO Each End of Mower Deck 5808 ADJUST LEVER DESIRED GROUND 2 TO STOP PULL STEERING SPEED CONTROL TO NEUTRAL 4 DANGER KEEP SHIELD IN LOWEST POSSIBLE POSITION DO NOT REMOVE THIS DISCHARGE SHIELD THROWN OBJECTS SD Deck Discharge Shield 5848 LH Fender 5802 2 RH Fender 5802 1 CUTTING HEIGHT ADJUSTMENT A CAUTION ACAUTION Dm Lj HOT EXHAUST SPIRE Rear Body Above Muffler 58
48. ides the FSC setting and slows or stops forward travel Releasing the steering levers allows the tractor to resume forward travel at the speed set by the FSC lever To stop and park the machine the FSC lever is moved backward to the NEUTRAL PARK position Steering Levers Each drive wheel is controlled by its own indepen dent steering lever for both steering function and FORWARD REVERSE motion The FSC lever sets the maximum forward speed and also sets the for ward position of the steering levers The steering levers operate only with a backward pulling move ment of the lever which causes the drive wheel for that lever to first slow down stop and then reverse with a full backward lever stroke The levers are released to the FORWARD position for straight ahead ground travel NOTE Pushing forward on the steering levers will not cause any change in tractor motion there will be no steering lever reaction and there will be no machine damage PTO Switch The PTO toggle switch is located on the RH front of the body and has two positions ON ENGAGE and OFF DISENGAGE positioning switch ON acti vates the electromagnetic blade drive clutch while the blade brake is applied when the switch is moved to OFF 25 26 Operating Instructions Parking Brake The parking brake functions by locking a detent arm into the transaxle outer control gear teeth Moving the lever BACKWARD engages the parking brake moving the
49. ing CLEANING Clean these areas of dirt and debris Clean Cooling Fins and Fan Air Cleaner System The engine is equipped with a paper air cleaner ele ment with an oiled foam which surrounds the paper element Clean and re oil the foam pre cleaner every 25 hours more often in dusty dirty conditions Clean the paper element every 100 hours and replace yearly or when dirty or damaged Service the air filter as follows Remove air cleaner cover and remove foam pre cleaner by sliding it off the paper element Wash foam pre cleaner in liquid detergent and warm water Wrap foam pre cleaner in cloth and squeeze dry do not wring Saturate foam in clean engine oil Squeeze foam to distribute and remove excess oil e Remove the paper filter element by pulling it out of the air cleaner bogy e Clean the filter element using low pressure com pressed air less than 100 PSI 689 kPa Blow out the filter from the interior of the element while turning the element NOTE Washing the element in water or cleaning solution is not recommended Replace the element if it does not clean up with compressed air 41 42 Maintenance Instructions e Use a bright light inside the element to inspect for damage Check the element very carefully for pin holes or other damage that will allow dirt to leak through the paper media Replace element if nec essary e Use a clean damp cloth and wipe the i
50. k not being level Should be 1 8 in 3 mm to 1 4 in 6 mm higher at the rear of the blade 4 in 102 mm Wood Block Assembly Instructions PREOPERATING CHECKLIST Before operating the mower for the first time and as a routine before daily operations it is important to make sure the mower is properly prepared and ready for operation The following is a list of items to be checked For a mower with frequent operation some of these items will not need to be checked every day but the operator should be aware of the condition of each Body Rod in Engaged Position Body Rod in Stowed Position CHECK BODY ROD IN STOWED POSITION Check that body rod is secured in the stowed position before lowering body Refer to Body Rod in Stowed Position photo For proper fuel and lubricants refer to Specifications FILL FUEL TANK Fill the fuel tank using clean fresh automotive grade unleaded gasoline 85 octane rating minimum 21 22 Assembly Instructions Handle gasoline with care Gasoline is high ly flammable and its vapors are explosive Use safe refueling procedures e DO NOT fill fuel tank with the engine run ning e If the engine is hot allow to cool before refueling Use an approved fuel container Fuel the mower outdoors e DO NOT smoke while refueling Avoid spilling fuel use a funnel or spout DO NOT overfill the fuel tank fill up to about 1 in 25 mm below the top of ta
51. k while blades are rotating The maximum recommended side slope operating angle is 20 degrees or 33 grade When operating the machine on a slope reduce speed and use caution to start stop and maneuver To prevent tipping or loss of control of the machine avoid sharp turns or sudden changes in direction Never adjust cutting height with the engine running Before adjusting cutting height or servicing disengage the blade clutch PTO stop the engine and remove the ignition key Wait for all movement to stop before getting off the seat NOTE The electric clutch brake should nor mally stop drive line rotation within five 5 sec onds of disengaging the PTO clutch For side discharge mower decks do not oper ate with the grass deflector chute removed Keep the deflector in the lowest possible position When using the tilt up deck observe the fol lowing recommendations a Do move tractor with deck in tilt up po sition Never tilt body forward with deck in tilt up position 16 In case of a clogged or plugged mower deck a Disengage the blade clutch PTO and turn the engine off before leaving the seat LOOK to make sure blade drive shaft move ment has stopped before trying to unclog the system Disconnect the spark plug wires Never place hands under the deck use a Stick or similar tool to remove clogged ma terial If the cutting blades strike a solid object or the machine begin
52. leaner System NOTE The following inspection is only an external inspection and should be done without disturb ing the filtration components On a daily basis visually inspect the external condi tion of the air cleaner cover Check for damage Make sure the cover is in place and the cover latches are secure do not run the engine without the air cleaner cover in place and secure Battery NOTE Forinitial battery service during setup refer to Battery Service in Assembly Instructions IMPORTANT Make sure battery is securely mounted in the frame A loose battery may cause damage to the case resulting in acid leakage and severe damage to the machine A hazard may be created by damage to critical working parts and safety systems Cleaning the Terminals If battery terminals are corroded remove battery from the mower Using a wire brush remove corro sion with a solution of one part baking soda and four parts water Rinse with clean water Coat the terminals with petroleum jelly or terminal protector spray to retard further corrosion Charging the Battery BATTERIES PRODUCE EXPLOSIVE GASES Charge the battery in a well ventilated area so that gases produced while charg ing can dissipate Keep sparks flames and smoking ma terials away from the battery at all times Make sure the battery cap vents are open check manifold vent on each cap Make sure the battery charger is un plugged before conn
53. lling the Forward Speed Control FSC into the NEUTRAL PARK position In case the transmission drive belt breaks during operation and if the machine is on a slope the machine will freewheel down the slope To maintain control immediately 1 Release the steering levers and simultaneously 2 Move the FSC to the NEUTRAL PARK position When the machine is stopped or moving slowly engage the parking brake NOTE This is exactly the same procedure used to normally stop and park the machine 6 Disengage the blade clutch and put the FSC in the NEUTRAL PARK position before starting the engine an ignition interlock switch normally prevents starting of the machine if these controls are in the OPERATING position Do not run the engine in a confined area without adequate ventilation Exhaust fumes are hazardous and can be deadly Do not carry passengers maximum seating capacity is one 1 person Safety Instructions Watch for holes rocks and roots in the terrain and for other hidden hazards When mowing tall grass mow higher than desired to expose any hidden obstacles Then clean the area and mow to the desired height Avoid sudden starts or stops Before backing the machine up look to the rear to be sure no one is behind the machine Watch carefully for traffic when crossing or working near roadways Disengage the blade drive when transporting the machine across drives sidewalks etc Never raise the mower dec
54. make a second pass cutting to the desired height Use a slow setting on the FSC for trimming operations Operating Instructions Make sure the mower is leveled properly for a smooth cut Refer to Deck Leveling in Assembly Instructions Use an alternating stripe mowing pattern for best appearance and vary the direction of the stripe each time the grass is mowed to avoid wear patterns in the grass Avoid damage to the grass by slipping and skid ding of the drive tires Use smooth control move ments of the steering levers since the transaxles are power boosted controls and jerking the levers can easily slip the tires For sharp turns do not allow the inside wheel to stop and twist on grass pull inside steering lever into reverse for a smooth rolling turn one wheel rolling forward while the other rolls back ward When using a side discharge mower deck the side discharge shield must not be removed and must be kept in the lowest possible position to deflect grass clippings and thrown objects down ward Orient the side discharge away from side walks or streets to minimize cleanup of clippings When mowing close to obstacles orient the side dis charge away from obstacles to reduce the chance of damage to property by thrown objects Side Discharge Shield in Lowest Position When operating on a slope reduce speed and use caution to start stop and maneuver Avoid sharp turns or sudden changes in direction
55. n in the Chassis and Deck Lubrication Points illustration NOTE PTO universal joints on the deck and trac tor require routine lubrication after every 8 hours of running time NOTE The pillowblock bearings on the PTO drive shaft are a sealed relubricatable type bearing Grease lightly once per year using care to not over lubricate and damage the seals 37 38 Maintenance Instructions Location Lubrication No Type Places LUBRICATION Lubrication No Location Type Places COON gt Deck Caster Wheel Fork Pivot Deck Caster Wheel Bearing Tee Gearbox Deck Blade Drive Gearbox Universal Joint Shaft Assembly Deck Support Arm Socket Pivot Assembly Tilt Up Deck Steering Lever Pivot Transaxle Oil Reservoir Deck to PTO Coupling Grease Slide Area Universal Joint Tube Assembly Deck Support Arm Pivot Hydro Idler Arm Pivot Parking Brake Clevis FSC Lever Pivot Body Latch Parking Brake Lever Choke Control Cable Ends PTO Belt Tightener Pivot Grease Grease Oil Grease Grease Grease Grease Oil Grease Grease Grease Grease Oil Grease Oil Oil Oil Grease MOM FM NM LY P Pp Pillowblock Bearing Drive Shaft Grease Throttle Control Cable Ends Oil Engine Oil Filler ore Choke Control Pivot Oil Throttle Control Pivot Oil Gearboxes are permanently lubricated and sealed requiring no scheduled lubrication Oil level
56. ngine PTO and Ground Drive CHECK HYDROSTATIC TRANSAXLE OIL LE VEL Refer to LUBRICATION for Transaxle Lubrication in Maintenance Instructions CHECK TIRE PRESSURE Deck Caster Wheel 20 PSI 137 kPa Drive 15 PSI 103 kPa Rear 20 PSI 137 kPa CHECK AND CLEAN GRASS BUILDUP UNDERNEATH MOWER DECK Refer to CLEANING in Maintenance Instructions for deck cleaning information Never operate cutter blades with deck in raised position because it is hazardous The tilt up deck can be secured in the raised position by unlocking the deck lock levers on each side of the carrier frame and inserting the deck hook into the tilt up latch on the tractor body Before operating the tractor make sure to re engage the deck lock levers after lowering the deck to the normal operating posi tion Assembly Instructions Deck Secured in Tilt Up Position Do not operate machine with deck tilt up pivot joint unlocked Do not operate the mower with deck in tilt up position Do not move the tractor with the deck in the tilt up position CHECK MOWER BLADE CONDITION SHARP NESS AND SECURITY OF MOUNTING The blade mounting nut should be tightened to 60 ft lb 81 3 N m If blade sharpening is required refer to CHECKING SERVICING for Sharpen Mower Blades in Maintenance Instructions ADJUST MOWER CUTTING HEIGHT IF RE QUIRED Position the hitch pins in the four deck support pins Refer to the Cutting Height A
57. nk IMPORTANT DO NOT permit dirt or other foreign matter to enter the fuel tank Wipe dirt from around the filler cap before removing Use a clean fuel stor age container and funnel IMPORTANT DO NOT mix oil with gasoline Always use fresh automotive grade unleaded gas oline DO NOT use premium white or high test gasoline DO NOT use additives such as carburetor cleaners deicers or moisture removing agents DO NOT use gasoline blended with methyl alcohol CHECK ENGINE CRANKCASE OIL LEVEL Check the engine crankcase oil level before use and after each 5 hours of continuous operation Refer to LUBRICATION for Checking Engine Crankcase Oil Level in Maintenance Instructions CHECK AND SERVICE ENGINE AIR CLEAN ER SYSTEM Check condition cleanliness and security ofthe complete air filter element clean air filter every 100 hours For detailed procedures refer to CLEANING the Air Cleaner System in Mainte nance Instructions CHECK ENGINE COOLING SYSTEM Check that the engine cooling air intake screen is free of obstruction by grass clippings or debris and clean if required Also cylinder head cooling fins should be inspected and cleaned if any build up of debris is noted Contact your Walker dealer to perform this procedure CHECK SECURITY OF DRIVE TIRE MOUNT ING NUTS The eight 8 Drive Tire mounting nuts should each be torqued to 75 85 ft lbs 101 7 115 2 Nem INSPECT TWO 2 DRIVE BELTS E
58. nterior of the air cleaner air cleaner body clean Use special care to clean both the inside and outside surfaces of the outlet tube Install foam pre cleaner over dry element and re assemble onto engine Tighten knob mounting air cleaner element securely 1 2 to 1 turn after contact ing cover but do not over tighten Make sure ele ment is sealed tightly against the element cover and base plate Reinstall air cleaner cover Clips Knob Cartridge Pre Cleaner and Cartridge Pre Cleaner Air Cleaner Components Grass Buildup in Mower Housing Before raising or removing the mower deck for cleaning stop the engine remove the ignition key and disconnect the spark plug wires Raise the deck lock lever handle on each side of the carrier frame and pull out to release carrier frame for tilting action CLEANING 2 Using the carrier frame lift handle raise deck to the TILT UP position and insert the deck hook into the tilt up latch on the tractor body Deck Secured in Tilt Up Position Clean grass buildup underneath the deck using a pressure washer and scraper if required NOTE Ifthe buildup is severe it may be easier to clean the deck by removing the deck assem bly from the tractor and standing the desk assembly on its nose NOTE While some degree of material buildup in the mower deck housing can be tolerated a point is finally reached where cutting quality deteriorates and clogging begins to occur becaus
59. oil above FULL level as this CAN result in engine overheating loss of power and possible engine damage Changing Engine Crankcase Oil Oil Filter Change the engine crankcase oil after every 50 hours of operation and the oil filter after every 100 hours of operation as follows 1 Park the mower on a level surface with the engine stopped The engine oil should be warm before draining If not warm from opera tion start the engine and run a few minutes to warm the oil Before removing the dipstick clean the area around it to keep any dirt or debris out of the engine Maintenance Instructions Remove the dipstick and oil drain plug and drain oil into a suitable container Be sure to allow ample time for complete drainage Before removing the oil filter clean the area around the filter to keep dirt and debris out of the engine Remove the old oil filter and wipe off the filter mounting surface on the engine Dipstick and Oil Fill view from above left side of tractor Oil Drain and Oil Filter Locations view from above right side of tractor Apply a thin coating of new oil to the rubber gas ket on the replacement oil filter IMPORTANT Use ONLY oil filters from the engine manufacturer Aftermarket oil filters may not seal properly and or may not have the cor rect pressure relief valve for proper lubrication LUBRICATION Install the new oil filter on the engine Turn the oil filter clockwise until the
60. orward Ground Speed Position Intermediate Ground Speed Position Neutral Park Position Disengaged BLADE CLUTCH Position PTO Engaged Position Disengaged Position PARKING Engaged BRAKE Position Operating Controls Top View from Drivers Point of View 27 28 Operating Instructions STARTING THE ENGINE Before operating the mower read and un derstand all Safety Instructions and Operat ing Instructions NEVER run the engine in an enclosed or poorly ventilated area Engine exhaust contains carbon monoxide an odorless and deadly gas Before attempting to start the engine make sure the operator is in the seat the Forward Speed Control is in NEUTRAL PARK position and the blade clutch and parking brake are DISENGAGED NOTE Release parking brake to prevent extra load on the starter if the transmission neutral is slightly out of adjustment A safety interlock switch system PRE VENTS CRANKING the engine with either the Forward Speed Control or the blade clutch PTO out of neutral If the engine cranks otherwise the safety system is not working and should be repaired or adjust ed before operating the mower DO NOT disconnect safety switches they are for the operator s protection Move the choke lever to the ON position and move the throttle 1 4 to 1 2 open toward FAST Turn the ignition switch to the START position to start the engine Release the key to RUN posi tion as soon as the engin
61. pport LH Tail Weight RH Transmission Control Arm RH Transaxle Expansion Reservoir and Hose RH Transaxle RH Transaxle Lockout Rod Parking Brake Parking Brake Linkage Flexible PTO Spider Coupling Fuel Tank Cap Air Cleaner Cover Latch Fuel Tank Fuel Pickup Line RH Tail Weight Muffler Heat Shield Top View Body Raised Safety Instructions Pay particular attention to any information labeled DANGER WARNING CAUTION IMPORTANT and NOTE in this manual When you see the Safety Alert Symbol A read understand and follow the instructions Fail ure to comply with safety instructions may result in personal injury The seriousness or degree of importance of each type of information is defined as follows An IMMEDIATE hazard that WILL result in severe personal injury or DEATH if warn ing is ignored and proper safety precau tions are not taken A POTENTIAL hazard that COULD result in severe personal injury or DEATH if warn ing is ignored and proper safety precau tions are not taken Possible hazards or unsafe practices that MAY result in MODERATE personal injury or property damage or machine damage if warning is ignored and proper safety pre cautions are not taken IMPORTANT Identifies mechanical information demanding special attention since it deals with the possibility of damaging a part or parts of the machine NOTE Identifies information worthy of special attention
62. que screws to 24 in lb 2 7 N m Transaxle Lubrication e The transaxle oil lubrication is SAE 20W 50 en gine oil Inspect both transaxle cases and hoses after ev ery 100 hours of operation for visible leaks The fluid levels for each transaxle can be checked visually by looking at the fluid levels in each expansion reservoir When the transaxles are cold the fluid level in the expansion reservoirs should be between 1 4 and 1 2 64 cm and 1 27 cm Expansion Reservoir Location Maintenance Instructions CLEANING Engine Air Cooling System To prevent engine overheating and possible engine damage clean grass clippings chaff and dirt from the rotating engine air intake screen every 8 hours of operation In certain mowing conditions dry grass leaves tree cotton etc it may be necessary to check and clean this area several times each day to prevent engine overheating Also visually check inside cylinder head shroud and between cylinder head fins for material packed in this area which would prevent cooling airflow remove shroud and clean as required IMPORTANT Yearly or every 100 hours remove engine cooling shroud and clean cylinder head cool ing fins to prevent overheating Make sure cooling shroud is reinstalled properly Keep Engine Screen Clean Operating the engine with a blocked air in take screen dirty or plugged cooling fins and or cooling shrouds removed will cause engine damage from overheat
63. r from rolling freely with the engine stopped However if the mower is parked ona slope it is necessary to ENGAGE the parking BRAKE to prevent the mower from creeping This is due to a small amount of slippage in the transaxles especially when transmission fluid is warm ADJUSTING CUTTING HEIGHT The engine must be stopped before ad justing cutting height Disengage the blade clutch PTO stop the engine and remove the ignition key Wait forall move ment to stop before getting off the seat Cutting height is adjusted by positioning the four retainer hitch pins in a series of seven vertical holes on the deck support pins Lift handles have been provided on each end of the deck to assist in raising the deck while positioning the hitch pins Cut ting heights range from 1 in 25 mm top holes to 4 in 102 mm bottom holes in 1 2 in 13 mm increments Lift Handle Deck Support Pin gt AU leg jet lt 4 Hitch Pin 9 Cutting Height Adjustment 31 32 Operating Instructions TRANSAXLE LOCKOUTS IMPORTANT DO NOT TOW this mower with the transmission lockout engaged Towing can produce excessive internal pressure and damage the transaxle To move the mower with the engine NOT running dead battery maintenance etc the transaxles are unlocked released 1 Raise the body 2 Pull up the transaxle lockout rods on both the RH and LH transaxles and secure into place by shouldering both rods in
64. r hotline in USA amp Canada www briggsandstratton com Transaxle Hydro Gear Sullivan IL Gearboxes Deck Tecumseh Products Co 900 North Street Grafton WI 53024 Specifications MODEL ENGINE Manufacturer Model Displacement HP 3600 RPM Max RPM No Load Governed RPM Max Torque ft lb RPM Idle RPM Spark Plug Type Spark Plug Gap Crankcase Capacity Crankcase Lubricant Fuel Tank Capacity Fuel Cooling System MB Briggs and Stratton Vanguard 2 Cyl OHV Air Cooled 34 7 cu in 570 cc 18 0 3600 100 3600 100 29 5 40 5 2400 1750 Champion RC14YC 030 in 75 mm 1 5 qts 1 4 liters SF SG SH SJ or Higher Grade Only with 30W Viscosity Above 40 F 4 C 3 Gallons 11 35 liters Automotive Grade Unleaded Gasoline 85 Octane Air Cooled ELECTRICAL SYSTEM Battery Charging System Charging Output System Polarity Ignition Starter Interlock Switch 12 Volt 220 CCA Interstate PC12 80 Flywheel Alternator 16 Amp DC Regulated Negative Ground Magnetron Electronic 12 Volt Electric Key and Solenoid Operated Ignition Lockout by Seat Switch Transmission Neutral and Blade Clutch TRANSMISSION Manufacturer Model Steering Forward Speed Control Service Brake Parking Brake Neutral Final Drive Dual Independent Hydro Gear Integrated Transaxles Hand Lever Control Individual Wheel Precision Friction Lock Lever Cruise Control
65. r the pin Adjustments are made by loosening the jam nut and tightening or loosen ing the set screws on the Deck Mount Pivot Brack ets Retighten the jam nut when the adjustment is complete Set Screw Tilt Up Deck Adjustable Stop ELECTRICAL SYSTEM For troubleshooting refer to the Wiring Diagram IMPORTANT Disconnect both battery cables be fore unplugging any wiring connectors or making re pairs on the electrical system 51 52 TRACTOR DECALS PART DESCRIPTION LOCATION NO NO NO REQD SD Walker Product and Operation Decals 1 5803 Walker Manufacturing Logo Body 1 2 5856 In USA 1 5802 2 LH Fender Body LH Side Near Seat 1 4 6806 Blade Clutch Body 1 5 5802 1 RH Fender Body RH Side Near Seat 1 6 9804 Axle Lockout Chassis 2 7 4024 2 Oil Reservoir Chassis 2 Danger Decals Warning Decals Caution Decals 8 5805 Caution Engine Exhaust Rear Body 1 9 7818 Warning Read Manual Body 1 10 4107 1 Decal Danger On Guard 2 11 4107 4 Decal Belt Routing On Guard 1 Maintenance Decals 12 4406 8 Parking Brake 13 6875 PTO Alignment Arrow tem used after Tractor S N 68541 Body RH Side below Seat Universal Joint Tube Assembly NOTE All parts requiring decals are shipped with decals applied Use only genuine Walker8 replacement parts Effective Date 10 01 04 TRACTOR DECALS Effective Date 10 01 04 Refer to Decks Parts Manual for Deck Decals Use only genuine Walker repla
66. r which includes the carrier frame deck housing blade drive gearboxes and cutter blades FORWARD SPEED CONTROL FSC controls the maximum forward speed of the tractor functioning as a cruise control GROUND DRIVE refers to the dual transaxles which drive the main wheels TRANSAXLE transmits and controls power from the ground drive belt to the main drive wheel LEFT HAND LH refers to the left hand side of the tractor when the operator is seated facing forward in the tractor seat POWER TAKE OFF PTO transmits engine power to run the cutter blades RIGHT HAND RH refers to the right hand side of the tractor when the operator is seated facing forward in the tractor seat SIDE DISCHARGE SD mows but does not collect the mowed material STEERING LEVERS steer the tractor by con trolling the two transaxles TRACTOR is the prime mover including the en gine drive train operator seat and controls to operate the mower TRANSAXLE LOCKOUT RODS release the transaxles to permit freewheeling the tractor IDENTIFYING NUMBER LOCATIONS The tractor serial number plate is affixed to the trac tor body just below the left rear corner of the seat The mower deck serial number plate is affixed alongside the angle iron framing on the LH side of the LH mower blade drive Model and serial num bers are helpful when obtaining replacement parts and maintenance assistance For ready reference please record these numbers in the spa
67. rboxes should be inspected since they operate in a dirty environment If an oil leak is noted replace the oil seal and relu bricate the gearbox assembly as follows 1 Remove gearbox cover footrest Deck orien tation should be the normal operating position Blade Drive Gearboxes Mower Deck Gearboxes shown with gearbox cover removed for clarity 2 Clean the area around the individual gearbox cover plates to prevent contaminants from entering the gearcase Remove the screws securing the cover plates on the blade drive gearboxes Check the level of lubricant in the gearboxes If the lubricant is low add SAE E P Extreme Pressure 90W oil until the oil level is up to sub merges the horizontal shaft in the gearbox shaft parallel to cover plate NOTE In case the gearboxes are completely drained of oil approximately 5 fl oz 15 cl of oil per gearbox is required to refill the gear drive assembly LUBRICATION NOTE Since the gearboxes are connected as a unit by connector tubes it is necessary to add oil slowly Allow a few minutes after adding oil for the oil to flow throughout the assembly and the oil level to stabilize before reassembly IMPORTANT DO NOT overfill the deck gear boxes The gearbox assembly is not vented and overfilling with oil will cause excessive pres sure and result in oil leaks Check condition of the cover gasket and replace if worn or damaged Reinstall gearbox cover plates tor
68. rocedure to replace the engine belt Electric Clutch dler Idler Arm Pulley Idler Pulley Spring PTO Drive E J T Engine PTO Zw Belt Engine PTO Belt Engaged 47 48 Maintenance Instructions REPLACING REPAIRING Ground Drive Belt 1 To remove the ground drive belt b Slide belt off pulleys then release the idler a Raise the spring loaded idler to relax belt dA RH Hydro Gear 0 LH Hydro Ground Drive amp Ban Belt NS Ww x Drive Pulley Idler Pulley Tension AN NS Spring Raise Idler Pulley to W Hydro Idler Relax Belt Y Arm Ground Drive Belt Assembly Disengaged 2 Reverse the procedure to install the ground drive belt RH Hydro Gear A LH Hydro Gear Ground Drive D AE 1 a MA T RET 740 E Idler Pulley Spring Hydro Idler Arm Ground Drive Belt Assembly Engaged Maintenance Instructions Fuel Filter Model MB is equipped with an in line fuel filter Visually inspect the filter periodically and replace the filter yearly In Line Fuel Filter Fuel Filter Location IMPORTANT Replace the fuel filter only in a clean area where the fuel line and connections will not be contaminated by any dust and dirt Gasoline is extremely flammable and can be highly explosive To minimize danger Use only an approved fuel container for gasoline
69. rrier Frame 5865 Assembly Instructions SETUP INSTRUCTIONS Walker Mowers are shipped partially assembled to our distribution network and are typically assembled by the selling dealer For any additional assembly besides the following contact your Walker dealer Battery Service The battery is a completely sealed non serviceable battery IMPORTANT Make sure battery is securely mounted in the frame A loose battery may cause damage to the case resulting in acid leakage and se vere damage to the machine A hazard may be cre ated by damage to critical working parts and safety systems Mower Deck Assembly Deck Caster Wheels Installation 1 Remove the bolt nut axle spacer tube and spacer washers from each deck caster wheel fork NOTE Spacer washers are used only when the optional semi pneumatic deck wheels 8 25 x 2 75 are installed Fit the axle spacer tube through the wheel hub position the spacer washer on each side of the hub if used and fit the assembly into the wheel fork Insert the 3 8 16 x 4 1 2 in bolt through the wheel fork with the bolt head to the outside and install the 3 8 16 in Keps nut Tighten the bolt and nut until the axle spacer tube bottoms against the inside of the wheel fork will not turn while the wheel and spacer washers if used spin freely without binding Deck Caster Wheel Installation Deck Discharge Shield Installation Side Discharge Models Only Attach the de
70. rubber gasket con tacts the sealing surface then tighten the filter an additional 1 2 to 3 4 turn Reinstall the drain plug Fill the crankcase with new clean oil Use only crankcase lubricants recommended by the engine manufacturer Refer to Specifications in this manual or the engine owner s manual Use the recommended oil viscosity for the expected ambient temperature Oil with the correct vis cosity will aid starting in cold weather and assure proper lubrication in hot weather Fill to FULL mark on the dipstick crankcase capacity is 1 5 quarts 1 4 liters when changing oil and filter IMPORTANT Check the dipstick reading be fore pouring in the last 1 2 pint of oil and fill only to the FULL mark The oil level should never be over the FULL mark on the dipstick overfilling can result in engine overheating and loss of power Start the engine and check for oil leaks around the oil filter Stop the engine recheck the oil lev el and add oil if necessary When the engine is first operated with a new oil filter the oil level will drop slightly as the filter is filled with oil Grease Fitting and Oil Point Lubrication Lubricate the grease fittings and oil points after every 25 hours of operation Lubricate more often when operating in dusty or dirty conditions Use SAE general purpose lithium or molybdenum base grease for grease fittings and light machine oil SAE 10 to lubricate oil points Lubricate the locations show
71. s of dust to enter the engine Wait until the element really needs servicing as indi cated by the loss of engine power When the air filter element is removed or re placed make sure all dust is cleaned out of the air cleaner body Use a damp cloth and wipe the inte rior of the air cleaner body clean a little dirt left here will be sucked into the engine and reduce engine life When the filter is reinstalled make sure the el ement is held tight and straight in the air cleaner body for proper seating and sealing Oil e Single viscosity or multi viscosity oils may be used with the viscosity matching ambient tempera tures for the engine operating conditions This will aid starting in cold weather and assure proper lu brication in hot weather e Use only Briggs amp Stratton oil filters Aftermarket filters may not seal properly and or have the in correct pressure relief valve for proper lubrication 35 Maintenance Instructions LUBRICATION DO NOT attempt to lubricate the machine with the engine running Disengage the PTO clutch shut off the machine and re move the ignition key Proper lubrication is an important maintenance pro cedure It reduces wear and makes the machine quieter and easier to operate Engine Oil Engine Break In Oil No special break in oil is required The engine is ser viced with 10W 30 Service Class SG oil from the factory The oil should be changed after the initial engine break in
72. s to vibrate abnormally immediately disengage the blade clutch PTO stop the engine and wait for all moving parts to stop To prevent accidental starting disconnect the spark plug wires Thoroughly inspect the mower and repair any damage before restarting the engine and operating the mower Make sure cutter blades in good condition and blade nuts are torqued to 60 ft lb 81 3 Do not touch the engine or muffler while the engine is running or immediately after stop ping the engine These areas may be hot enough to cause serious burns When leaving the machine unattended dis engage the blade clutch PTO stop the engine and remove the key MAINTENANCE 1 To prevent accidental starting of the engine when servicing or adjusting the machine re move the key from the ignition switch and dis connect the spark plug wires To reduce fire hazards keep the engine free of grass leaves excessive grease and dirt Keep all nuts bolts and screws tight to ensure the machine is in a safe working condition Check the blade mounting nuts frequently mak ing sure they are tight Perform only maintenance instructions de scribed in this manual Unauthorized main tenance operations or machine modifications may result in unsafe operating conditions 14 Safety Instructions 5 If the engine must be running to perform a main tenance adjustment keep hands feet and clothing away from moving p
73. should be checked only when an oil leak is noted Grease every eight 8 hours Refer to Engine Oil located on page 36 Sealed relubricatable type bearings grease lightly once per year do not over grease or seals will be damaged NOTE DSD42 Tilt Up Deck is shown for reference For other Deck Lubrication Points refer to Deck and Carrier Frame Illustrated Parts Manual Maintenance Instructions LUBRICATION Chassis and Deck Lubrication Points 39 40 Maintenance Instructions Mower Deck Gearbox Lubrication The mower deck gearboxes tee gearbox and blade drive gearboxes are connected as a unitized assembly and oil flows freely between them The gearboxes are permanently lubricated oil filled and sealed requiring no scheduled lubrication However the gearbox oil seals should be checked every 25 hours for indication of an oil leak particularly the lower seals on the blade drive gea
74. ss Buildup in Mower Housing in this section NEVER operate cutter blades with the deck in the raised position CHECKING SERVICING Check the blades for straightness by marking the blade tip position inside the deck housing and then rotating the opposite end of the blade to the same position and comparing If the dif ference in blade tip track is more than 1 8 in 3 mm the blade is bent and should be re placed DO NOT try to straighten a blade that is bent NEVER weld a broken or cracked blade ALWAYS replace with a new blade to assure safety If the blade cutting edge is dull or nicked it should be sharpened Remove blades for sharpening by grasping the end of the blade using a rag or a thick padded glove while loos ening and removing the nut lock washer and flat washer that mounts the blade Grind cutting edge at the same bevel as the original Sharpen only the top of the cutting edge to maintain sharpness NOTE Blades can be sharpened with an elec tric blade sharpener conventional electric grinder or a hand file ALWAYS wear eye protection and gloves when sharpening a blade Check blade balance by positioning the blade horizontally on a blade balancer or use a nail or shaft through the center hole If either end of the blade rotates downward grind remove metal on that end until the blade will balance The blade is properly balanced when neither end drops Balance of a blade is generally main tained b
75. system provides primary shock protection in case of blade impact and will normally shear before the individual shear bolts on the blade hub When the PTO pin has sheared use the following procedure to replace it 1 Loosen the two bolts securing the PTO shaft guard on the deck lift the guard off Holes in guard are slotted for easy removal 49 50 Maintenance Instructions Rotate U joint on shaft to align the shear pin hole with the hole and shear pin fragment in the shaft Use a punch to drive the remaining portion of the old shear pin out Install new shear pin and secure with cotter pin Set Screw 0 Shear Pin Split Spring Pin U Joint Tube Assembly U Joint Shaft Assembly M Cotter Pin PTO Shear Pin IMPORTANT Use only Walker P N 8067 13 shear pins for replacement to provide proper shock protection these pins are hardened to shear under a specific amount of load 4 Reinstall the PTO shaft guard Before operating the deck inspect the blade over load shear bolts and also check blade timing on gear driven decks by moving blades through one 1 complete revolution Make sure blade tips pass clear of each other If timing is incorrect contact your Walker Dealer Mower Blades Mower blades are removed and remounted as de scribed in the Sharpen Mower Blades instructions During the course of sharpening and inspecting mower blades if there are any of the following con ditions of w
76. ted separately by their respective manufacturers Briggs amp Stratton Engine Hydro Gear Transaxles Battery Tires The available warranties covering these items are furnished with each mower Walker does not assume any warranty obli gation liability or modification for these items which are covered exclusively by the stated warranty of the respective man ufacturers noted above WHAT THIS WARRANTY DOES NOT COVER A This warranty does not cover defects caused by depreciation or damage caused by normal wear accidents improper maintenance improper use or abuse of the product alterations or failure to follow the instructions contained in the Owner s Manual for operation and maintenance The customer shall pay any charges for making service calls and or for transporting the mower to and from the place where the inspection and or warranty work is performed HOW TO OBTAIN SERVICE UNDER THIS WARRANTY Warranty service can be arranged by contacting the dealer where you purchased the mower or by contacting Walker Man ufacturing Company 5925 East Harmony Road Ft Collins CO 80528 Proof of the date of purchase may be required to verify warranty coverage WARRANTY LIMITATION A THERE IS NO OTHER EXPRESS WARRANTY ANY WARRANTY THAT MAY BE IMPLIED FROM THIS PURCHASE INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE IS HEREBY LIMITED TO THE DURATION OF THIS WARRANTY AND TO THE EXTENT PERMITTED BY LAW ANY AND ALL IMPLIED W
77. the chassis notch area The mower will freewheel with the rods in the LOCKOUT position The levers must be in the highest position to completely unlock the transmissions Hydro Lockout Rod Freewheel Position After moving the mower release the rods plac ing them in the normal OPERATING position The transmission rod ends should be com pletely retracted against the chassis otherwise operation of the transmission maybe erratic Hydro Lockout Rod Normal Operating Position RECOMMENDATIONS FOR MOWING IMPORTANT Operate the engine at full speed when mowing to allow the engine to produce full horsepower and to increase efficiency of the engine cooling system Keepthe mower deck and discharge chute clean Mow with sharp blades A dull blade tears the grass resulting in poor lawn appearance and uses extra power slowing the mowing speed t is preferable to cut grass when it is dry and not too tall Mow frequently and do not cut grass too short For best appearance cut off 1 3 or less of existing grass height When mowing operate the engine at or near full throttle for the best cutting action Mowing with a lower engine RPM causes the mowing blade to not cut clean and tear the grass The engine is designed to be operated at full speed When mowing in adverse conditions tall and or wet grass mow the grass twice Raise the mower to the highest setting 4 in 102 mm for the first pass and then
78. ticks stones wire and any other debris Keep everyone especially children and pets a safe distance away from the area being mowed Do not mow with bystanders in the area Do not operate the machine barefoot or wearing sandals sneakers tennis shoes or similar light weight footwear Wear substantial protective footwear 12 Safety Instructions Do not wear loose fitting clothing that could get caught in moving parts Do not operate this machine while wearing shorts always wear adequate protective clothing including long pants Wearing safety glasses safety shoes and a helmet is advisable and required by some local ordinances and insurance regulations Prolonged exposure to loud noise can cause impairment or loss of hearing Operator hear ing protection is recommended Wear a suitable hearing protective device such as ear muffs or earplugs Keep all protective shields and safety de vices in place If a protective shield safety device or decal is damaged unusable or miss ing repair or replace it before operating the machine Be sure interlock switches are functioning correctly so the engine cannot be started un less the Forward Speed Control lever is in the NEUTRAL PARK position and the PTO switch is in the DISENGAGED position Also the engine should stop if the operator lifts off the seat with the PTO switch in the ENGAGED position Handle gasoline with care Gasoline is highly flammable and its
79. tion in this section Spark Plugs Every 100 hours remove the spark plugs inspect clean and reset the gap or replace with a new plug Clean spark plug with a wire brush If the electrodes are burned short or pitted replace the plug refer to Specifications for the proper type of replacement plug Check the spark plug gap with a wire type feeler gauge and set the gap between 0 028 and 0 032 in 0 7 and 0 8 mm Reinstall and tighten to 17 ft lb 23 N m Both spark plugs should be replaced yearly Breaker Points The Briggs amp Stratton engine is equipped with elec tronic ignition No breaker points maintenance or adjustments are necessary with this system Con tact an authorized Briggs amp Stratton engine dealer in case of ignition failure Fuel Lines and Clamps Every year inspect the fuel line from the tank to engine for deterioration or damage Also inspect the fuel line clamps for tightness Good preventive maintenance calls for complete replacement of fuel lines and clamps every two 2 years 45 Maintenance Instructions Blade Brake Action Itis important to check and maintain blade brake action for safe operation of the ma chine Check the function of the cutter blade brake by engaging the blade clutch PTO operating the engine at full throttle then disengaging the clutch and measuring how quickly the blades stop Watch the rotation of the blade drive shaft as a visual indi cation that movem
80. ture 50 F 910 C OPERATOR Humidity 52 Wind Speed 5 mph lt 8 kmh Barometric Pressure 24 9 HG 759 mm Hg Humidity 52 Barometric Pressure 24 9 HG 759 mm Hg WALKERGZSMOWERS WALKER MFG 5925 E HARMONY ROAD FORT COLLINS CO 80528 970 221 5614 FORM NO 040104 PRINTED IN USA www walkermowers com 2004 WALKER MFG CO
81. y removing an equal amount of material from each end of the blade when sharpening Maintenance Instructions Intersection Wear Area Sharpen at Original 30 Angle i Wing Tip Do Not Grind or Sharpen on Underside Mower Blade Profile For Sharpening Blade Balancer Blade Balanced on Magnetic Wall Mounted Balancer Mount the blade with wing tips pointing up into the housing Reinstall the blade washer lock washer and nut Tighten the nut to 60 ft lb 81 3 N m Drive Belts Raise the body and inspect the condition of the two 2 drive belts after every 25 hours of operation engine PTO drive and ground drive Ifthe belts show signs of cracking or deteriorating the belts should be replaced Refer to REPLACING REPAIR ING the Drive Belts in this section CHECKING SERVICING Mower Deck Gearbox Oil Seals The mower deck gearbox seals should be inspected every 25 hours for evidence of oil leaking particu larly the lower oil seal on the blade drive gear box This seal is protected by the trash guard on the blade hub and seal protector plate on the housing but is still vulnerable to seal damage due to operating in an adverse environment The mower blade must be removed for inspection of the seal so it is recom mended to inspect the gearbox seals when blades are removed for sharpening If an oil leak is noted the seal should be replaced and the gear box assembly relubricated Refer to Mower Deck Gearbox Lubrica

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