Yard-Man 131704F Lawn Mower User Manual
Contents
1. YAaRD MdN OUTDOOR POWER EQUIPMENT for all seasons Y Summer se Ko serios MS a HYDROSTATIC LAWN TRACTORS Thank you for purchasing an American built product Owner s Manual e ASSEMBLY e OPERATION e MAINTENANCE IMPORTANT Read Safety Rules and Instructions Carefully Model Numbers 131704F 131734G WARNING This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest covered brush covered or grass covered land unless the engine s exhaust system is equipped with a spark arrester meeting applicable local or state laws if any If a spark arrester is used it should be maintained in effective working order by the operator In the State of California the above is required by law Section 4442 of the California Public Resources Code Other states may have similar laws Federal laws apply on federal lands A spark arrester for the muffler is available through your nearest engine authorized service dealer PRINTED IN U S A FORM NO 770 7544F A DANGER IMPORTANT fh THIS SYMBOL A HEED ITS WARNING THIS SYMBOL POINTS OUT IMPORTANT SAFETY INSTRUCTIONS WHICH IF NOT FOLLOWED COULD ENDANGER THE PERSONAL SAFETY AND OR PROPERTY OF YOURSELF AND OTHERS READ AND FOLLOW ALL INSTRUCTIONS IN THIS MANUAL BEFORE ATTEMPTING TO OPERATE YOUR UNIT FAILURE TO COMPLY WITH THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY WHEN Y2. T a oy og AS k i k Ti E a E Pa Washer 1 e a Ln i Steering Bellow FIGURE 7 tom of the steering wheel 6 o clock position Secure with the cupped washer cupped side down and hex lock nut removed in step 1 4 Place the indicator wires through the cable tie located underneath the steering wheel insert Con nect the wires to the same color wire leads in the steering wheel insert Tighten the cable tie to hold the wires securely in position 5 Snap the steering wheel insert over the four spokes of the steering wheel making sure the indicator lights are positioned at the bottom of the steering insert toward the operator IMPORTANT Be certain to follow step six exactly to prevent damage to the indicator lights and wire harness when using the lawn tractor 6 Position the cable tie and secure the wire harness as follows a Raise the hood of the tractor and pull excess wire down through the dash panel b Partially tighten the cable tie under the dash panel so the cable tie is snug but can still slide up and down the wire harness Slide the cable tie up until it is against the dash panel c Turn the steering wheel fully in both directions wires will be pulled up into the steering bellow then return the steering wheel to the center Carefully pull the wires down from the dash panel and move cable tie down the wires 1 4 inch d Tighten the cable tie sec
3. or chute deflector in place wear and should be checked periodically Be sure any replacement bag complies with the mower manufac turer s recommendations For replacement bags use only factory authorized replacement bag WARNING Disconnect the spark plug wire and ground against the engine before per forming any adjustments repairs or maintenance SEAT ADJUSTMENT To adjust the position of the seat loosen the four self tapping screws on the bottom of the seat See figure 1 Slide the seat forward or backward as desired Retighten the self tapping screws HYDROSTATIC CONTROL ADJUSTMENT The hydrostatic transmission control is in correct ad justment when the lawn tractor does not move with the engine running the clutch engaged and the hydrostatic control lever in the neutral N position If adjustment is necessary follow these steps NOTE A rachet wrench with a Y socket extension is required to make this adjustment 1 Remove the transmission panel by removing the parking brake knob and truss machine screws Loosen the bolt and nut on the bracket on the hydrostatic control lever See figure 13 10 Hydrostatic Control Lever del FIGURE 13 2 Start the engine 3 Push the clutch brake pedal all the way forward Then release the pedal completely The lawn tractor should not move in either direction If it does not move depress the clutch brake pedal all the way and set the parking brake retighten the bolt and n
4. brake knob 16 Remove the blocks from under the frame and test the operation of the lawn tractor DECK LEVELING ADJUSTMENT If an uneven cut is obtained the deck may be leveled by following instructions in Assembly section BRAKE ADJUSTMENT See figure 15 The brake is located by the right rear wheel inside the frame During normal operation of this machine the brakes are subject to wear and will require periodic ex amination and adjustment WARNING Do not adjust the brake while A the engine is running Be sure to block the wheels of the tractor before making the brake adjustment To adjust the brake remove the cotter pin Adjust the castle nut so the brake starts to engage when the brake lever is 1 4 to 5 16 away from the axle housing NOTE Figure 15 is shown with the unit tipped up on rear wheels for clarity only Brake Lever Castle Nut Disc Cotter Pin Brake FIGURE 15 11 CARBURETOR ADJUSTMENTS WARNING If any adjustments are made to the engine while the engine is running e g carburetor disengage all clutches and blades Keep clear of all moving parts Be careful of heated surfaces and muffler Minor carburetor adjustments may be required to compensate for differences in fuel temperature altitude and load Refer to separate engine manual for carburetor adjustment information NOTE A dirty air cleaner will cause an engine to run rough Be certain air cleaner is clean and attached
5. grounded The positive terminal Pos P or attaches to the large cable from the solenoid The small red wire from the fuse holder or circuit breaker is also attached to the positive terminal Blown fuse or circuit breaker Replace fuse with 7 2 amp fuse x 1 lg Circuit breaker will reset itself when it cools off Fuses or circuit breakers seldom open or fail without a reason The problem must be corrected Check for loose connections in the fuse holder Replace fuse holder if necessary A dead short may be in the cranking or charging circuit where the insulation may have rubbed through and exposed the bare wire Replace the wire or repair with electrician s tape if the wire strands have not been damaged Note Look for a wire pinched between body panels burned by the exhaust pipe or muffler or rubbed against a moving part Battery is dead or weak Use a hydrometer to check the condition of the battery The Specific Gravity s g should be 1 265 at 80 F 1 215 s g minimum needed for cranking engine The reason for the battery failing must be determined 1 Defective battery Battery will not accept or hold a full charge 2 Short circuit Check for grounded wire 3 Charging system not working The charging system is an alternator located under the flywheel It is unregulated and rated 3 amp at 3600 r p m A diode rectifier is located in the output lead just before the wire harness plug on the en
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7. the steering shaft and remove the steering bellow Pry the steering insert off the center of the steer ing wheel 2 Attach one end of steering bellow to the steering lt wheel as shown in figure 6A inset 3 Position the front wheels of the tractor so they are pointing straight forward 4 Place the steering wheel and steering bellow over the steering shaft positioning steering wheel as desired 5 Place the washer with the cupped side down over the steering shaft Secure with hex lock nut See figure 6A 6 Snap the steering wheel insert over the four spokes of the steering wheel Model 734G Only Model 734G is equipped with indicator lights located in the steering wheel The steering wheel must be assembled as follows for proper operation of the in dicator lights 1 Remove the hex lock nut and cupped washer from the steering shaft and remove the steering bellow Pry the sterring wheel insert off the center of the steering wheel 2 The opening in the steering bellow is wider at one end than the other Route the five indicator wires up through the smaller end of the steering bellow Slide steering bellow over steering shaft Insert the five indicator wires up through the slot in the steer ing wheel as shown 3 Position the front wheels of the tractor so they are pointing straight forward Place the steering wheel over the steering shaft so the wires are at the bot Steering oi PTO Clutch Insert
8. tube is always open KEEP BATTERIES OUT OF THE REACH OF CHILDREN ACTIVATING THE BATTERY Do not activate battery fill with battery acid until battery is actually placed in service Be certain to read previous warnings before activating the battery NOTE Some units may have the battery and battery hardware packed with the battery fluid 1 Lift the seat Remove the battery cover by press ing in on the sides and lifting up See figure 2 in set Remove the battery from the rear frame 2 Open the battery pack Be careful not to puncture the box It contains the battery fluid acid in a plastic container and one short plastic tube 3 Place the battery on a table or workbench Make certain the long plastic drain tube is in place on the vent elbow 4 Remove the six fill caps from the top of the bat tery with a screwdriver Be careful not to damage the fill caps See figure 2 5 Place the battery fluid container on the table or workbench Carefully cut off tip of the spout and attach the short plastic tube provided Do not squeeze the container when cutting tip 6 Fill each battery cell slowly and carefully to the UP PER LEVEL line marked on battery See figure 3 Use caution as the acid level will rise rapidly after the bottom of the cell is filled 7 Allow battery to stand for 30 minutes with the fill caps removed while the plates absorb acid 8 If acid level has fallen after the 30 minute standing pe
9. AINTENANCE WARNING Disconnect the spark plug wire A and ground against the engine before per forming any adjustments repairs or maintenance TROUBLE SHOOTING Refer to the chart on page 17 for trouble shooting engine problems ENGINE Refer to the separate engine manual for engine maintenance instructions Service air cleaner every 10 hours under normal con ditions Clean every few hours under extremely dusty conditions To service the air cleaner refer to the separate engine manual packed with your unit The spark plug s should be cleaned and the gap reset once a season Spark plug replacement is recommend ed at the start of each mowing season check engine manual for correct plug type and gap specifications Maintain engine oil as instructed in the separate engine manual packed with your unit Read and follow instructions carefully Model 734G Only Your engine is provided with a drain hose for your convenience in draining oil from the crankcase A clamp secures the drain hose to the side of the engine See figure 19 To drain the oil remove the hose from the clamp and remove the drain plug from the end of the hose Be certain to replace the drain plug and to use the clamp to secure hose to the engine before operating FIGURE 19 Model 734G Only FUEL FILTER Your unit is equipped with a replaceable in line fuel filter Replace filter whenever contamination or discoloration is noticed Order replacement
10. E SHUT ENGINE OFF AND REMOVE THE KEY GAS AND OIL FILL UP Service the engine with gasoline and oil as instructed in the separate engine manual packed with your trac tor Read instructions carefully NOTE Your tractor is shipped without oil however a small amount of oil may be present from the factory Do not overfill WARNING Never fill fuel tank indoors with engine running or while engine is hot Check the fluid level in the hydrostatic transmission before initial operation Refer to the Lubrication sec tion on page 11 STARTING THE ENGINE IMPORTANT This unit is equipped with a safety in terlock system for your protection The purpose of the safety interlock system is to prevent the engine from cranking or starting unless the clutch brake pedal is depressed and the lift lever is in the disengaged posi tion Model 704F or the PTO swith is in the OFF posi tion Model 734G In addition the lift lever must be in the disengaged position Model 704F or the PTO switch must be in the OFF position Model 734G when the unit is put into reverse or the engine will shut off If the operator leaves the seat with the lift lever engaged Model 704F or the PTO switch engaged Model 734G and or without setting the parking brake the engine will shut off WARNING Do not operate the tractor if the interlock system is malfunctioning because it is a safety device designed for protection 1 Model 704F Place the lift lever
11. E 5 Steering Wheel Insert Steering Hex Lock Nut Bellow Cupped Washer FIGURE 6A Model 704F INSTALLING THE BATTERY 1 Raise the seat 2 Make certain the positive cable heavy red wire and negative cable heavy black wire are routed outside the battery opening 3 Place the battery inside the opening so that the positive terminal is toward the front of the unit See figure 3 Route the battery drain tube down beside the battery 4 Remove the hex bolt from the positive terminal Place the positive cable on the positive terminal See figure 4 Secure with hex bolt Be careful not to lose the nut inside the terminal 5 Secure the negative cable to the negative ter minal in the same manner Replace the battery cover over the positive terminal Lower the seat 6 Insert the drain tube through the cable tie which is attached to the transaxle reinforcement bracket on the left side of the unit Be certain drain tube is routed away from the wheel rim Pull on end of cable tie to tighten do not collapse drain tube Trim excess end of cable tie ATTACHING THE CHUTE DEFLECTOR Attach the chute deflector to the deck following the in structions in the separate deck manual packed with your unit WARNING Do not operate your unit unless the chute deflector has been properly in stalled ATTACHING THE STEERING WHEEL Model 704F Only 1 Remove the hex lock nut and cupped washer from
12. OU SEE RULES FOR SAFE OPERATION A Your unit was built to be operated according to the rules for safe operation in this manual As with any type of power equipment carelessness or error on the part of the operator can result in serious injury If you violate any of these rules you may cause serious injury to yourself or others 16 17 READ THIS OWNER S MANUAL carefully in its entirety before at tempting to assemble or operate this unit Keep this manual in a safe place for future and regular reference and for ordering replacement parts This unit is a precision piece of power equipment not a plaything Therefore exercise extreme caution at ail times Know the controls and how to stop the machine quickly Do not allow children under 14 years old to operate vehicle Children 14 years and over should only operate unit under close parental supervision Do not allow anyone to operate it without proper in struction Only persons well acquainted with these rules of safe operation should be allowed to use your mower Wear sturdy rough soled work shoes and close fitting slacks and shirts Do not wear loose fitting clothes or jewelry They can be Caught in moving parts Never operate a unit in bare feet sandals or sneakers To prevent injury do not carry passengers or give rides Keep children pets and bystanders out of the area while mowing Only the operator should ride on the unit and only ride in
13. Specifications 33 Check grass catcher bags frequently for wear or deterioration For Safety protection replace only with new bag meeting original equip ment specifications 34 Look behind to make sure the area is clear before placing the transmission in reverse and continue looking behind while back ing up Disengage blades before shifting into reverse and backing up 35 This unit should not be driven up a ramp onto a trailer or truck under power because the unit could tip over causing serious per sonal injury The unit must be pushed manually to load properly 36 Check brake operation frequently Adjust and service according to brake adjustment instructions in this manual 37 Muffler engine and belt guards become hot during operation and can cause a burn Allow to cool down before touching ASSEMBLY This owner s manual covers two models of lawn tractors Follow only those instructions which per tain to your model lawn tractor Refer to the separate deck manual for all informa tion concerning the deck IMPORTANT This unit is shipped WITHOUT GASOLINE or OIL however a small amount of oil may be present from the factory Do not overfill After assembly service engine with gasoline and oil as instructed in the separate engine manual packed with your unit Self Tapping Screws FIGURE 1 WARNING A Battery acid must be handled with great care as contact with it can burn and blister the skin It is also
14. advisable to wear protective clothing goggles rub ber gloves and apron when working with it B Should battery acid accidentally splatter into the eyes or onto the face rinse the affected area im mediately with clean cold water If there is any further discomfort seek prompt medical attention C If acid spills on clothing first dilute it with clean water then neutralize with a solution of ammonia water or baking soda water NOTE Reference to right or left hand side of the unit is observed from the driver s seat facing forward UNPACKING 1 Remove the lawn tractor from the carton as follows Open the top flaps The loose parts includes the battery fluid steering wheel with steering cap at tached and chute deflector may be on the seat and wrapped in plastic or may be located in a box Remove all loose parts and carton inserts Cut the front corners of the carton Make certain brake is released use the relief valve and push the unit out of the carton 2 The seat has been mounted backward for shipping purposes If the loose parts are on the seat careful ly cut and remove the plastic wrap NOTE On some units the seat may be packed with the loose parts The self tapping screws will be attached to the seat Remove the screws and assemble as in structed ASSEMBLING THE SEAT Remove the hex self tapping screws which secure the seat to the seat pivot bracket Turn the seat around and place in posi
15. ause the front of the trac tor could lift and rapidly flip over backward which could cause serious injury Reduce speed on slopes and in sharp turns to prevent tipping or loss of control Always keep the tractor in low gear when going down steep hills to take advantage of engine braking action Choose a low enough gear so that you will not have to stop or shift while on the slope Stay alert for holes in terrain and other hidden hazards which may cause the unit to tip over Use care when pulling loads or using heavy equipment A Use only approved drawbar hitch points B Limit loads to those you can safely control C Do not turn sharply Use care when backing D Use counterweight s or wheel weights when suggested in owner s manual Watch out for traffic when crossing or near roadways When using any attachments never direct discharge of material toward bystanders nor allow anyone near vehicle while in operation Handle gasoline with care It is highly flammable A Extinguish cigarettes cigars pipes and all other sources of ignition B Use approved gasoline container C Never remove cap or add gasoline to a running or hot engine or fill fuel tank indoors Allow to cool at least 2 minutes before refilling Wipe up spilled gasoline Always use original type vented cap D Open doors if engine is run in garage Exhaust fumes are dangerous Do not run engine indoors Never store the machine with fuel in the fuel tank in
16. ccidental engine start ing Protect hands by using heavy gloves or a rag to grasp the cutting blades 1 Remove the large bolt and lock washer which holds the blade and adapter to the blade spindle 2 Remove the blade and adapter from the spindle 3 If the blade or blade adapter needs replacing remove the two small bolts lock washers and nuts which hold the blade to the adapter B Sharpening Remove the cutting blades by following the directions of the preceding section When sharpening the blades follow the original angle of grind as a guide It is extremely important that each cutting edge receives an equal amount of grinding to prevent an unbalanced blade An unbalanced blade will cause excessive vibration when rotating at high speeds may cause damage to the mower and could break Causing personal injury The blade can be tested for balance by balancing it on a round shaft screwdriver Remove metal from the heavy side until it balances evenly NOTE t is recommended that the blade always be removed from the adapter for the best test of balance C Reassembly Before reassembling the blade and the blade adapter to the unit lubricate the spindle and the inner surface of the blade adapter with light oil Lubricating the bolt holes bolts and inner surface of the nuts with light oil is also recommended A 4 oz plastic bottle of light oil lubricant is available Order part number 737 0170 Engine oil may also be u
17. discon nect battery cables Removing battery from unit is recommended 3 Store in cold dry place 4 Recharge battery whenever the specific gravity is less than 1 225 before returning to service or every two months whichever occurs first COMMON CAUSES FOR BATTERY FAILURE 1 Overcharging Undercharging Lack of water Loose hold downs and or corroded connections Excessive loads Battery electrolyte substitutes Freezing of electrolyte NO OP W NY NOTE These failures do not constitute warranty 14 BATTERY REMOVAL OR INSTALLATION WARNING When removing the battery A follow this order of disassembly to prevent your wrench from shorting against the frame 1 Remove the Negative cable 2 Remove the Positive cable To instail a battery 1 Attach the Positive cable 2 Attach the Negative cable pu STARTING Attach the first jumper cable from the Positive ter minal of the good battery to the Positive terminal of the dead battery 2 Attach the second jumper cable from the Negative terminal of the good battery to the FRAME OF THE UNIT WITH THE DEAD BATTERY WARNING Failure to use this starting pro cedure could cause sparking and the gases in either battery could explode TIRES Recommended operating tire pressure is approximately 12 p s i check sidewall of tire for tire manufacturer s recommended pressure Maximum tire pressure under any circumstances is 30 p s i Equal tire pre
18. e 12 WARNING The blade does not shut off when the deck is raised You must place the PTO switch in the OFF position B DECK LIFT INDICATOR The deck lift indicator marks the position being used for the lift lever Select the lift lever position desired press the indicator lever outward move it to the posi tion immediately below the lift lever and release the in dicator lever See figure 12 C SETTING THE CUTTING HEIGHT 1 Select the position for the lift lever which gives the desired cutting height Move the deck lift indicator so that the lift lever can be returned to the same position after it is raised 2 Move the deck wheels to the hole location so the wheels are Ya to Y inch above the ground Lift Lever FIGURE 12 OPERATION CAUTION READ OPERATOR S MANUALIS NEVER CARRY CHILDREN e KNOW LOCATION AND FUNCTION OF ALL CONTROLS KEEP SAFETY DEVICES GUAADS SHIELDS AND SWITCHES IN PLACE AND WORKING e REMOVE OBJECTS THAT COULD BE THROWN BY BLADES DO NOT OPERATE THE UNIT WHEN CHILDREN AND OTHERS ARE AROUND e ALWAYS LOOK BEHIND THE UNIT BEFORE BACKING UP DO NOT OPERATE THE UNIT WHERE 17 COULD SLIP OR TIP e F THE UNIT STOPS GOING UPHILL STOP BLADE S ANB BACK SLOWLY DOWN HILL BE SURE BLADE S AND ENGINE ARE STOPPED BEFORE PLAC ING HANDS OR FEET NEAR BLADE S BEFORE LEAVING OPERATORS POSITION DISENGAGE THE BLADE S PLAGE THE SHIFT LEVER IN NEUTRAL ENGAGE THE PARKING BRAK
19. eel If a light illuminates when attempting to start the unit proceed as follows CLUTCH Depress the clutch pedal PTO Place PTO switch in the OFF position OlL Check the crankcase oil level and add oil as re quired POWER TAKE OFF PTO SWITCH Model 734G Only The PTO switch is located on the right side of the dashboard See figure 11 The PTO switch must be in the OFF position down when starting the engine when shifting into reverse and if the operator leaves the seat To engage the PTO switch pull knob out and lift up to ON position then release The knob will return to RUN position See figure 11 OFF Position FIGURE 11 NOTE The PTO switch must be in OFF position when starting the engine when shifting into reverse and if the operator leaves the seat CUTTING CONTROLS A LIFT LEVER Model 704F The lift lever is used to raise and lower the cutting deck and to engage and disengage the blades Pulling it all the way back and locking it disengages the blades NOTE The lift lever must be in the disengaged posi tion when starting the engine when shifting into reverse and if the operator leaves the seat See figure 12 Model 734G The lift lever is located on the right side of the lawn trac tor It is used to raise and lower the cutting deck which sets the cutting height and other attachments Move the lift lever outward select the desired cutting height and release the lever See figur
20. emove belt from the engine pulley and remove from the unit Reassemble using a new belt following instructions in reverse order Belt Engine Keeper Pulley L Assembly Self Tapping Self Tapping Screws Screws idler Pulley Unhook p Spring Belt Guard Cold Weather Starting Kit Yi sz Liz i Transmission Xel Pulley FIGURE 22 Model 704F MODEL 734G See Figures 23 and 24 1 Depress the clutch pedal and set parking brake 2 Remove the deck from the lawn tractor 3 Raise and block the front wheels of the lawn trac tor so you can work under it 4 Remove the transmission panel and unhook the spring from the idler pulley 15 5 Unplug the electric PTO 6 Remove the torque bracket by removing two hex bolts and washers See figure 23 7 Remove the belt keeper assembly by removing the four self tapping screws which hold the belt keeper assembly to the frame at the engine pulley See figure 23 Belt Keeper Assembly Self Tapping Screws Self Engine Tapping Pulley Screws Torque Bracket FIGURE 23 Model 734G 8 Loosen the idler pulley Remove the belt from around the idler pulley 9 Roll the belt off of top sheave of engine pulley onto the pulley hub Units with Cold Weather Starting Kits Installed Remove the rear belt guard at the transmission pulley by removing two hex bolts lock washers and hex nuts 10 11 Remove beit from the transmission pu
21. filter through your authorized engine service dealer CLEANING ENGINE AND DECK Any fuel or oil spilled on the machine should be wiped off promptly Grass leaves and other dirt must not be left to accumulate around the cooling fins of the engine or on any part of the machine Clean the underside of the deck after each mowing WHEEL ADJUSTMENT The caster forward slant of the king pin and the camber tilt of the wheels out at the top require no ad justment Automotive steering principles have been used to determine the caster and camber on the trac tor The front wheels should toe in 1 8 inch To adjust the toe in follow these steps 1 Remove the hex nut and lock washer and drop the end of the tie rod from the axle bracket See figure 20 2 Loosen the hex jam nut on tie rod 3 Adjust the tie rod assembly for correct toe in Lock Washer Tie Rod FIGURE 20 End 13 Dimension B should be approximately 1 8 less than Dimension A See figure 21 To increase Dimension B screw tie rod into tie rod end To decrease Dimen sion B unscrew tie rod from tie rod end Reassem ble tie rod Check dimensions Readjust if necessary A Front L 8 gt 1 8 Less Than A FIGURE 21 CUTTING BLADES A Removai for Sharpening or Replacement WARNING Be sure to disconnect and BA seine the spark plug wire and remove ignition key before working on the cutting blade to prevent a
22. gine side Red Shrink 3 AMP DC Wire Diode Tube Batt 7 AMP AC Lamps To Alternator o Wire Polarized Plug The diode changes A C to D C to charge the battery A bad diode can either fail to charge the bat tery or discharge the battery if the alternator is shorted as well as the diode To test 1 Disconnect charger lead from the battery small red wire 2 Connect 12 V small test lamp between the 3 amp D C charge lead and the positive terminal of the battery 3 With the engine off the lamp should not light If it does the diode and possibly the alternator should be replaced 4 Start the engine The lamp should light If it does not the alternator stator or lead wire is bad and should be replaced Mechanical failure Wires and switches The interlock system includes two mechanical activated switches which are wired in series in the circuit used to energize the starter solenoid While testing the interlock system you will make the mower temporarily unsafe by permitting the engine to be started with the blade and clutch engaged WARNING While testing disengage the clutch shut off the blade control set the parking brake and place the gear shift lever in neutral Attach a wire minimum 18 gauge to the positive terminal of the battery and touch the other end to the small terminal on the solenoid If the engine does not crank 1 There is a loose connection or po
23. ilter if necessary If the air cleaner is dirty the engine may not start Clean or replace as recommended by the engine manufacturer Air filter dirty Engine smokes Engine loses crankcase Dipstick not seated or broken Replace defective part vacuum Engine breather defective Replace Excessive Bent or damaged blade Stop engine immediately Check all pulleys blade adapters keys and bolts for tightness vibration spindle and damage Tighten or replace any damaged parts Bent blade Stop engine immediately Replace damaged blade Only use original equipment blades Throttle must be set between 3 4 and full throttle Use lower transmission speed The slower your ground speed the better the quality of cut Sharpen or replace blades uncut strip problem only Mower will not discharge grass or leaves uncut strips Engine speed low Transmission selection Blades short or dull HYDROSTATIC TRANSMISSION TROUBLE SHOOTING No output torque power in either direction cold start Recheck relief valve position control linkage input drive Oil level in reservoir low Broken control shaft dowel pin Transmission must be repaired or replaced Loss of output torque continuous Operating at conditions approaching hydraulic stall The transmission fluid load has exceeded 180 F Internal leakage due to wear Transmission should be repaired or replaced Water in transmission f
24. in the DIS ENGAGED position Model 734G Place the PTO switch in the OFF position 2 Depress the clutch brake pedal and set the park ing brake 3 Place the hydrostatic control lever in the NEUTRAL N position 4 Set the throttle control in the FAST position 5 Pull out the choke control a warm engine may not require choking 6 Turn the ignition key to the right to the START posi tion After the engine starts release the key It will return to the ON position NOTE Protect the starter life by using short starting cycles of several seconds Cranking more than 15 seconds per minute can damage the starter motor 7 Push choke knob in gradually Move the throttle control to desired engine speed STOPPING THE ENGINE Turn the ignition key to the left to the OFF position Remove the key to prevent accidental starting IMPORTANT If you strike a foreign object stop the engine Remove wire from spark plug thoroughly in spect the unit for any damage and repair the damage before restarting and operating the mower NOTE f any problems are encountered refer to the Trouble Shooting Chart on page 17 COLD WEATHER STARTING KIT A cold weather starting kit is available to disengage the drive belt to provide easier starting for the hydrostatic transmission when the weather is cold Order part number 753 0509 OPERATING THE LAWN TRACTOR 1 Set the desired cutting height 2 Start the engine as instructed previousl
25. lley lifting the belt up over the fan on top of the pulley 12 Remove belt from the engine pulley and remove from the unit Reassemble using a new belt following instructions in reverse order idler Pulley Belt Guard Cold Weather s ST loo Starting Kit Y L gt Lo A ls eae il Transmission SS Y Pulley FIGURE 24 Model 734G OFF SEASON STORAGE If the machine is to be inoperative for a period longer than 30 days prepare for storage as follows 1 Clean the engine and the entire unit thoroughly 2 Lubricate all lubrication points Wipe the entire machine with an oiled rag to protect the surfaces 3 Refer to the engine manual for correct engine storage instructions The engine must be com pletely drained of fuel to prevent gum deposits from 16 forming on essential carburetor parts fuel lines and fuel tanks 4 Refer to battery storage instructions on page 14 5 Store unit in a clean dry area NOTE When storing any type of power equipment in an unventilated or metal storage shed care should be taken to rustproof the equipment Using a light oil or silicone coat the equipment especially any chains springs bearings and cables TROUBLE SHOOTING CHART FOR ELECTRIC START MODELS e TROUBLE LOOK FOR REMEDY ngine will not Battery installed incor The battery must be installed with the negative terminal identified at the terminal post by Neg N crank rectly or
26. luid Purge system of all fluid and replace with new transmisison fluid Replacement of the transmission is generally not necessary No output torque in one direction One of the directional valves is stuck Transmission should be repaired or replaced Low oil level Lawn tractor cannot be pushed with engine off Relief valve control not set Relief valve travel not adjusted Motor piston or rotor seized Transmission must be repaired or replaced No neutral Recheck linkage Loose linkage creates an adjustment problem Note The hydraulic neutral band is very narrow Deflection in the linkage may make it difficult to obtain neutral from both directions It is recommended that neutral should be positive from forward drive Oil leakage at the control shaft seal Spillage when fluid has been added to the reservoir Spillage at the vent in the reservoir at operating temperatures due to cold level being too high or water in the fluid Reduce fluid level or replace fluid in the event there is water in it milky color Loose oil reservoir or cover Loose vent bolt Damaged control shaft seal Transmission should be repaired N OAU Noisy operation Operating at part throttle Hydrostatic transmission is designed to operate with the engine running at full throttle Water in transmission fluid Replace transmission fluid Air in transmission fluid Bleed ai
27. nk See figure 17 Overfilling reduces the expan sion area in the expansion tank and fluid will spill at operating temperatures If transmission fluid is needed use only 10W30 engine oil rated SF or CD FIGURE 17 To check or add fluid to the transmission 1 Unscrew the parking brake knob 2 Unscrew the two screws holding the access cover located in front of the seat 3 Check the fluid level in the expansion tank See figure 17 4 If it is necessary to add fluid unscrew the cap on the expansion tank The cap has left hand threads See figure 18 Remove the rubber bladder Add fluid using a funnel Do not overfill 5 Reassemble parts FIGURE 18 If frequent additions are required locate the leak and correct Inadequate supply of fluid may result in per manent internal damage If the natural color of the transmission fluid has changed black or milky overheating and or water con taminate is indicated The fluid should be drained and replaced with new transmission fluid To drain the hydrostatic transmission remove the hex plug on the bottom of the hydrostatic transmission HYDROSTATIC TRANSMISSION COOLING The hydrostatic transmission is cooled by the oil fan and fins If the hydrostatic transmission runs hot check to see if the fan is in operating condition the oil level is correct and the fins are clean NOTE DO NOT use high pressure water spray or steam to clean the hydrostatic transmission M
28. ocated on the left side of the dashboard and is used to regulate the engine speed See figure 8 The engine should be operated from 3 4 to full throttle FAST when operating any equipment that uses the tractor engine as a source of power such as the mowing deck snow thrower or rotary tiller CHOKE CONTROL The choke contro is located on the right side of the dashboard and is operated manually Details for the choke operation are covered in the separate engine manual packed with your unit See figure 8 Ignition Switch FIGURE 8A Model 704F Ammeter o Light Throttle Control Switch FIGURE 8B Model 734F LIGHT SWITCH The head lamps are operated by pushing the light switch located on the dashboard The head lamps will only operate when the engine is running See figure 8 AMMETER The ammeter registers the rate of battery charge or discharge The ammeter will register on the discharg ing side with starting the engine It should register on the opposite side charging when the engine is run ning in the fast position until the battery is completely charged With a fully charged battery or with the engine idling the ammeter will not show a charge See figure 8 HYDROSTATIC CONTROL LEVER The hydrostatic control lever is located on top of the fender on the left side of the tractor This single con trol lever connected to the hydrostatic transmission controls both the speed and direction of the t
29. or ground 2 The solenoid may be bad The solenoid can be checked by using a heavy wire 8 gauge minimum and jumping between the two large terminals If the engine cranks the solenoid is bad 3 If the engine does not crank when you jump the solenoid have the starter motor tested by an authorized engine dealer If the engine does crank the problem is with one of the safety switches ignition switch or the wire between the fuse holder or circuit breaker and the small terminal on the solenoid Note Look for a poor connection at the switches or a defective switch Replace if necessary Throttle or choke not in Check owner s guide for correct position for throttle control and choke for starting starting position No spark to spark plug Spark plug lead disconnected Connect lead Hold spark plug lead away from engine block about 1 8 Crank engine There should be a spark If not have engine repaired at authorized engine ser vice dealer Engine cranks but will not start Faulty spark plug To test remove spark plug Attach spark plug lead to spark plug Ground the spark plug body against the engine block Crank the engine The spark plug should fire at the electrode Replace if it does not TROUBLE SHOOTING CHART FOR ELECTRIC START MODELS TROUBLE LOOK FOR No fuel to the carburetor REMEDY Gasoline tank empty Fill Fuel line or in line fuel filter plugged Remove and clean fuel line Replace f
30. perator s position disengage blade s place shift lever in neutral engage parking brake shut engine off and remove key Do not put hands or feet near or under rotating parts Keep clear of the discharge opening at all times as the rotating blade s can Cause injury Disengage power to attachment s and stop engine before mak ing any repairs or adjustments Disconnect the spark plug wire and keep the wire away from the plug to prevent accidental starting Before attempting to unciog the mower or discharge chute stop the engine The mower blade s may continue to rotate for a few seconds after the engine is shut off Therefore be sure the blade s have stopped completely Disconnect the spark plug wire and keep the wire away from the plug to prevent accidental starting Disengage power to attachment s when transporting or not in use 18 19 20 21 22 23 24 25 26 27 28 29 30 31 For your safety use the slope gauge included as part of this manual to measure slopes before operating this unit on a sloped or hilly area If the slope is greater than 15 as shown on the slope gauge do not operate this unit on that area or serious injury could result Do not stop or start suddenly when going uphill or downhill Mow up and down face of steep slopes never across the face Use extreme caution if it is necessary to drive the tractor up an incline or back the tractor down an incline bec
31. r from vent Output shaft rotates in the opposite The transmission body is 180 out of position Transmission has to direction be removed and reassembled correctly 18 G N TWO YEAR LIMITED WARRANTY For two years from the date of original retail purchase YARD MAN COMPANY will either repair or replace at its option free of charge F O B factory or authorized service firm any part or parts found to be defective in material or workmanship Transportation charges for the movement of any power equipment unit or attachment are the responsibility of the purchaser Transportation charges for any parts submitted for replacement under this warranty must be paid by the purchaser unless such return is requested by YARD MAN COMPANY This warranty will not apply to any part which has become inoperative due to misuse excessive use accident neglect improper maintenance alterations or if the unit has not been operated and maintained in accordance with the instructions furnished This warranty does not apply to the engine Peerless components motor battery except as noted below or component parts thereof Please refer to the applicable manufacturer s warranty on these items A battery which proves defective within ninety 90 days will be replaced without charge After 90 days but within one hundred twenty 120 days of purchase YARD MAN COMPANY will replace the defective battery for a charge of 1 2 of the current retail price of the bat
32. ractor In finite speed control is achieved by moving the control lever forward or backward The farther forward or backward you move the control lever the faster you will travel Pulling the control lever into neutral N area will stop the tractor See figure 9 Hydrostatic Control FIGURE 9 CLUTCH BRAKE PEDAL The clutch brake pedal is located on the left side of the tractor See figure 8 Depressing the pedal returns the drive unit to neutral N and applies the brake NOTE The clutch brake pedal must be depressed to Start the engine PARKING BRAKE To set the parking brake depress the clutch brake pedal pull up the parking brake knob and release the clutch brake pedal It will stay in the raised position To release the parking brake depress and release the clutch brake pedal See figure 10 NOTE The parking brake must be set if the operator leaves the seat with the engine running FIGURE 10 RELIEF VALVE A hydrostatic relief valve is provided so the unit can be moved without the engine running The lever which operates the relief valve is located on the console See figure 10 To operate the relief valve place the hydrostatic con trol lever in neutral release the parking brake push the lever forward and to the right to lock Be certain to release the lever by pushing it to the left before operating the engine INDICATOR LIGHTS Model 734G Only Three indicator lights are located in the steering wh
33. riod refill each cell with battery acid to the UP PER LEVEL line on battery Replace the fill caps 9 Before discarding the empty container neutralize any residue with baking soda and rinse container with water Puncture container several times before discarding 10 Charge the battery after the 30 minute standing period SLOW CHARGE THE BATTERY DO NOT FAST CHARGE Model 704F Charge the battery at a maximum bench rate of 1 4 amperes until the specific gravity reading is 1 260 1 280 Charge for a minimum of 2 hours and a maximum of 8 hours Model 734G Charge the battery at a maximum bench rate of 2 amperes until the specific gravity reading is 1 265 Charge for a minimum of 3 hours and a maximum of 5 hours NOTE This engine is equipped with an alternator The current for the battery charger alternator is unregulated During normal operation it is only necessary to charge the battery 1 When it is activated for the first time 2 Before winter storage 3 Before using the lawn tractor after winter storage NOTE Model 704F Charging rate after battery has been put into operation the battery is to be charged for a period of 14 16 hours NO LONGER THAN 30 HOURS After battery has been charged add only distilled water Do not add acid l Negative aaa x h Terminal Q Battery A Positive ME Terminal Red Black Positive lo Fco Cable able FIGURE 4 Transaxle Cable Reinforcement Tie Bracket FIGUR
34. sed When replacing blades be sure to install the blade with the side of the blade marked Bottom or with part number facing the ground when the mower is in the operating position Blade Mounting Torque 3 8 Dia Bolt 375 in Ib min 450 in Ib max 5 16 Dia Bolt 150 in Ib min 250 in Ib max To insure safe operation of your unit all nuts and bolts must be checked periodically for correct tightness MAINTENANCE OF BATTERY 1 Check electrolyte level periodically at least every two weeks Keep the level to the split rings Use only distilled water or a good quality drinking water Never add acid or any other chemicals to the bat tery after initial activation 2 The battery should be checked with a hydrometer after every 25 hours of operation If the specific gravity is less than 1 225 the battery should be recharged For Model 704F maximum charge rate 5 AMPS 3 Coat the terminals and exposed wire with a thin coat of grease or petroleum jelly for longer service and protection against corrosion 4 The battery should be kept clean Any deposits of acid should be neutralized with soda and water Be careful not to get this solution in the cells 5 Avoid tipping the battery Even a sealed battery will leak electrolyte when tipped STORAGE OF THE BATTERY 1 Charge battery using normal methods NEVER store discharged battery as it will not recover 2 When storing battery for extended periods
35. side a building where fumes may reach an open flame or spark such as hot water and space heaters clothes dryers and the like Allow the engine to cool before storing in any enclosure To reduce fire hazard keep engine and cutting deck free of grass leaves or excessive grease or oil Keep the vehicle and attachments in good operating condition and keep safety devices in place Use guards as instructed in operator s manual Do not operate this unit unless the chute deflec tor guards and safety interlock system are installed and func tioning properly Keep all nuts bolts and screws tight to be sure the equipment is in safe working condition The vehicle and attachments should be stopped and inspected for damage after striking a foreign object The damage should be repaired before restarting and operating the equipment Do not change the engine governor settings or overspeed the engine RULES FOR SAFE OPERATION CONTINUED 32 When using the vehicle with mower proceed as follows A Mow only in daylight or in good artificial light B Never make a cutting height adjustment while engine is running if operator must dismount to do so C Shut the engine off and wait until the blade comes to a com plete stop before removing the grass catcher D Check blade mounting bolts for proper tightness at frequent intervals Also check blades for wear or damage e g bent cracked Replace with blade which meets original equipment
36. ssure should be maintained on all tires When installing a tire to the rim be certain rim is clean and free of rust Lubricate both the tire and rim generously Never inflate to over 30 p s i to seat beads WARNING Excessive pressure over 30 A p s i when seating beads may cause tire rim assembly to burst with force suf ficient to cause serious injury DECK BELT REPLACEMENT When replacing the deck belt disconnect the spring from transaxle inside the right rear wheel step 5 Refer to the separate deck manual packed with your unit DRIVE BELT REPLACEMENT MODEL 704F See Figure 22 1 Depress the clutch pedal and set parking brake 2 Remove the deck from the lawn tractor 3 Raise and block the front wheels of the lawn trac tor so you can work under it 4 Remove the transmission panel and unhook the spring from the rear idler pulley 5 Remove the four self tapping screws which hold the belt keeper assembly to the frame at the engine pulley Remove the belt keeper assembly 6 Loosen both the front and rear idler pulleys Remove the belt from around the idler pulleys 7 Roll the belt off of top sheave of engine pulley on to the pulley hub 8 Units with Cold Weather Starting Kits Installed Remove the rear belt guard at the transmission pulley by removing two hex bolts lock washers and hex nuts 9 Remove belt from the transmission pulley lifting the belt up over the fan on top of the pulley 10 R
37. tery in effect at the date of return Warranty on units used commercially is limited to sixty 60 days Warranty service is available through your local authorized service dealer or distributor If you do not know the dealer or distributor in your area please write to the Customer Service Depart ment of YARD MAN The return of a complete unit will not be accepted by the factory unless prior written permission has been extended by YARD MAN This express limited warranty is in lieu of all other warranties express or implied including any implied warranty of merchantability The remedy of replacement is the sole and exclusive remedy for YARD MAN obligations arising from the sale of its products In no case will YARD MAN be liable for incidental or consequential loss or damage This warranty gives you specific legal rights You may also have other rights which vary from state to state YaRD MaN COMPANY P O BOX 360940 CLEVELAND OHIO 44136 _ pa sadojs umop pue dn JaAau soa O 398 9y S0198 SIQMOW GNIHAG WIVM 2e4edo sado s jo 398 3y SSO 98 J3AdU s dojs umop pue dn samou ONIGIY ajelJado Ainful snouas ul Buninsal dijs pinos noA pue Bunooj noA uiezuiew 0 ynoyp Ajaawa x si y adojs e yans uo JaMOW puryaq 418m e Bunezado 31 Anfu snoluas asned pue ulmjaro0 p nos samow Huipun y 1991 OL lana joo z747 jojeuwixoldde jo asi e so91bap G jo ssaoxa ul ado s e ym sauou UO Mow JOU oq _ r A
38. the seat Check overhead clearance carefully before driving under power lines guy wires bridges or low hanging tree branches before entering or leaving buildings or in any other situation where the operator may be struck or pulled from the unit which could result in serious injury To maintain control of the unit and reduce the possibility of upset or collision operate the tractor smoothly Avoid erratic operation and excessive speed Thoroughly inspect the area to be mowed Remove all stones sticks wire bones and other foreign objects Keep the area of operation clear of all persons particularly small children and pets Stop engine when they are in the vicinity of your mower Although the area of operation should be completely cleared of foreign ob jects a small object may have been overlooked and could be ac cidently thrown by the mower in any direction and cause injury to you or a bystander Plan your mowing pattern to avoid discharge of material toward roads sidewalks bystanders pets and the like Always wear safety glasses or eye shields during operation or while performing an adjustment or repair to protect eyes from foreign Objects that may be thrown from the machine in any direction Stop the blade s when crossing gravel drives walks or roads Disengage all attachment clutches thoroughly depress the brake pedal and shift into neutral before attempting to start engine Before leaving the o
39. tion against the seat pivot bracket lining up the slotted holes in the pivot bracket with the holes in the seat Select desired position for the seat and secure with hex self tapping screws See figure 1 BATTERY If FORMATION D Since battery acid is corrosive do not pour it into any sink or drain Before discarding empty elec trolyte containers rinse them with a neutralizing solution E NEVER connect or disconnect charger clips to bat tery while charger is turned on as it can cause Sparks F Keep all lighted materials cigarettes matches lighters away from the battery as the hydrogen gas generated during charging can be combustible G As a further precaution only charge the battery in a well ventilated area Always shield eyes protect skin and clothing when working near batteries Screwdriver Fill Caps Clear Plastic Drain Tube A FIGURE 2 FIGURE 3 A DANGER Battery contains sulfuric acid Refer to warning on page 3 Antidote EXTERNAL Flush with water INTERNAL Drink large quantities of water or milk Follow with milk of magnesia beaten eggs or vegetable oil Call physician immediately EYES Flush with cool water for at least 15 minutes then get prompt medical attention Since batteries produce explosive gases keep all lighted materials cigarettes lighters matches etc away Be sure to charge battery only in well ventilated areas Make certain venting path of bat tery drain
40. to the carburetor before adjusting carburetor LUBRICATION WARNING Always stop engine and A disconnect spark plug wire before clean ing lubricating or doing any kind of work on lawn tractor STEERING GEARS Lubricate teeth of steering gears with automotive multi purpose grease after every 25 hours of operation or once a season See figure 16 STEERING SHAFT Lubricate steering shaft at least once a season with light oil Steering Gears FIGURE 16 TRANSAXLE The transaxle is lubricated and sealed at the factory and does not require checking If disassembled for any reason lubricate with 16 oz of grease part number 737 3047 LINKAGE Once a season lubricate all the pivot points on the clutch brake and lift linkage with SAE 30 engine oil WHEELS The front wheels are provided with grease fittings The rear wheels must be removed from the axle for lubrica tion Lubricate at least once a season with automotive multi purpose grease PIVOT POINTS Lubricate all pivot points with light oil at least once a season BALL JOINTS The ball joints and drag link ends are permanently lubricated HYDROSTATIC FLUID LEVEL The transmission has been filled at the factory and should not require changing for the life of the transmission The transmission fluid level should be checked prior to initial use The level should not be above the LOWER mark which is about Va from the bottom of the expan sion ta
41. urely Trim end of cable tie so at least one inch of the cable tie remains 7 Pull bellow up against the bottom of the steering wheel TIRE PRESSURE The tires on your unit may be over inflated for shipping purposes Reduce the tire pressure before operating the unit Recommended operating tire pressure is ap proximately 12 p s i check sidewall of tire for tire manufacturer s recommended pressure WARNING Maximum tire pressure under any circumstances is 30 p s i Equal tire pressure should be maintained on all tires LEVELING THE DECK With unit on hard level surface measure the distance from the bottom edge of the center of the left side of deck to the ground Measure the same distance on the center of the right side of the deck just behind the chute area on side discharge units Or place the blades in a straight line and measure the distance from the outside edge of the blade tips to the ground Adjust the lift link on the left side of the deck as necessary See figure 7 Recheck the adjustment CONTROLS IGNITION SWITCH The ignition switch is located on the dashboard Turn the key to the START position to start the engine When the engine is running leave the key in the ON posi tion To stop the engine turn the key to the OFF posi tion See figure 8 WARNING Remove the key from the trac tor when the tractor is not in use to pre vent accidental starting THROTTLE CONTROL The throttle control is l
42. ut which secure the hydrostatic control lever If it does move shut off the engine and adjust as follows 4 Loosen the hex bolt which secures the pintle arm extension to the pintle arm using a rachet wrench with 12 socket extension See figure 14 Pintle Arm Extension FIGURE 14 Top View of 0 5 Raise both rear wheels off the ground by placing blocks under the rear frame 6 Start the engine Make certain the clutch brake pedal is depressed and the parking brake is set 7 Move the hydrostatic control lever to move the pin tle arm until you find neutral rear wheels do not rotate in either direction WARNING Be careful of the cooling fan on the hydrostatic transmission 8 Tighten the hex bolt which secures the pintle arm extension to the pintle arm 9 Release the clutch brake pedal by pushing all the way forward then releasing the pedal Check the wheels for movement They should not rotate in either direction If they do readjust until the wheels do not move steps 4 7 and 8 Then adjust the posi tion of the hydrostatic control lever as follows 10 Depress the clutch brake pedal all the way and set the parking brake 11 Shut off the engine 12 Depress the clutch brake pedal all the way and set the parking brake 13 Place the hydrostatic control lever in neutral N 14 Tighten the bolt and nut on the bracket on the hydrostatic control lever 15 Replace the transmission panel and parking
43. y 3 Move throttle control to full throttle to prevent strain on the engine and to operate the cutting blades 4 Depress the clutch brake pedal so the parking brake is released and then release the clutch brake pedal 5 Place the hydrostatic control lever in either the FORWARD or REVERSE position The farther for ward you move the hydrostatic control lever the faster you will travel A WARNING Look to the rear before back ing up To stop the lawn tractor pull the hydrostatic control lever into NEUTRAL N or depress the clutch brake pedal Be sure that the lawn is clear of stones sticks wire or other objects which could damage lawn tractor or engine For best results and to insure more even grass distribution do not mow when lawn is excessively wet A WARNING Before leaving the operator s position for any reason disengage the blades place the hydrostatic control lever in neutral engage the parking brake shut engine off and remove the key When stopping the unit to empty a grass bag etc follow the instructions above This procedure will also eliminate browning the grass which is caused by hot exhaust gases from a running engine GRASS COLLECTOR AVAILABLE Grass Collector Model 190063 is available as optional equipment for the lawn tractors shown in this manual 1 WARNING The mower should not be operated without the entire grass catcher NOTE Under normal usage bag material is subject to
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