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OPERATOR`S MANUAL

1. 8 000 8 500 rom Operating RPM Brushcutter 8 900 9 500 rom IANS Speed RRM dca evecare lege ac 2 800 3 300 Ignition Type 4 3008 ad ie et Se D Electronic IGNITION inene donne Me th Toggle Switch Spark Plug Wes SA le ee eee ae 0 025 inch 0 655 mm Lubrication natal SAE 30 Oil Crankcase Oil Capacity sic sc tee eh ae dea eed ea en we Ree 3 4 oz 100 ml FUG tebe eda deen Galo reveal aaa Unleaded Carburetor sii y s sin fee dt tins ale nt Gas eat eal oe ep ae Diaphragm All Position Stater er eee Auto Rewind Muffler e edi Baffled with Guard ee tha spe vars ak ware Arve E rove Manual Spring Return Fuel Tank Capacity 1 eee wae ae 20 oz 591 ml Fuel Tank dened Saar Dea elds HD Polyethylene DRIVE SHAFT amp CUTTING HEAD Drive Shaft HOUSING end Maange we Peas Aluminum Tube Click Link Throttle Controlia se ice act sap epee te de wth wee a gence anh en Fin
2. Bie eee ot 16 E Using the Cutting Blade 16 VII Maintenance and Repair Instructions 17 23 A Maintenance Schedule 17 B Line 18 C Installing a Prewound Reel 19 D Air Filter Maintenance 20 E Carburetor Adjustment 21 F Checking the Oil Level 21 G Changing the Oil 22 H Checking Adjusting Valve to Rocker Arm Clearance 22 Replacing the Spark Plug 23 VIII Cleaning and Storage 24 A Accessories Replacement Parts 24 Troubleshooting Chart 25 X Specifications 26 Xl Warranty oier enau eae 27 28 CONTENTS OF CARTON This unit should consist of the following e Model 1090r with J Handle and 4 Tooth Cutting Blade with Cover String Guard and Hardware Bump Head String Cutting Attachment e Shoulder Harness e Locking Rod 3 4 oz Bottle of 4 Cycle Oil SAE 30 e Operator s Manual and Parts Manual e Product Registration Card CALIFORNIA EMISSION REGULATIONS This unit meets the 1995 to 1998 California emissions regulations for small off road engines These units are identified by the label on the engine of your product A typical identification label is shown To ensure that your unit continues to meet these regulations refer to the following information and instructions in this operator s manual
3. 6 Remove the locking rod 7 Install the cutting attachment shield See Removing and Installing Cutting Attachment Shield Pg 10 WARNING To avoid serious A personal injury the cutting attachment shield SHALL be in place at all times while operating the unit as a grass trimmer REMOVING THE CUTTING ATTACHMENT AND INSTALLING THE CUTTING BLADE NOTE To make removing or installing the cutting blade or cutting attachment easier place the unit on the ground or on a work bench Remove the Cutting Attachment Shield See Removing and Installing Cutting Attachment Shield Pg 10 Remove the Cutting Attachment WARNING The gear housing gets hot with use and can result in injury to the operator When the unit is turned off it remains hot for a short time Do not touch the gear housing until it has cooled 1 Align the shaft bushing hole with the locking rod slot and insert the locking rod into the shaft bushing hole Fig 7 2 While holding the locking rod remove the cutting attachment by turning it clockwise off of the output shaft Fig 10 Store the cutting attachment for future use Locking Rod Slot Fig 10 Install the Cutting Blade WARNING To avoid serious personal injury always wear gloves while handling or installing the blade 3 Place the cutting blade on the output shaft Fig 11 gt Nut Pilot Hole gt ore Blade eee Blade Cver aoe Output Sha
4. 7527 A CLONE 2246 a A Ss 2 FOR QUESTIONS CALL 1 800 345 8746 in U S or 1 800 265 6778 in CANADA www ryobi com IMPORTANT MANUAL DO NOT THROW AWAY INTRODUCTION TABLE OF CONTENTS THANK YOU Thank you for purchasing this quality product This modern outdoor power tool is designed to provide many hours of useful service You will find it to be a great labor saving device This operator s manual provides you with easy to understand operating instructions Read the entire manual and follow all of the instructions to keep your new outdoor power tool in top operating condition The other manual that came with your power tool the parts manual contains all of the information that you need to order parts PRODUCT REFERENCES ILLUSTRATIONS AND SPECIFICATIONS All information illustrations and specifications in this manual are based on the latest product information available at the time of printing We eserve the right to make changes at any time without notice Copyright 1998 Ryobi Outdoor Products Inc All Rights Reserved Bump Head is a trademark of Ryobi Outdoor Products Click Link is a registered trademark of Ryobi Outdoor Products SERVICE INFORMATION Service on this unit both within and after the warranty period should be performed only by an authorized and approved service dealer Dial 1 800 345 8746 in the United States and 1 800 265 6778 in Canada to obta
5. California Proposition 65 Warning RYOBI IMPORTANT ENGINE INFORMATION eran nasa THE ENGINE EXHAUST FROM THIS aoe CALFORNA MISSION RESLATENS PRODUCT CONTAINS CHEMICALS aun anes KNOWN TO THE STATE OF CALIFORNIA FOR MAINTENANCE SPECIFICATIONS TO CAUSE CANCER BIRTH DEFECTS AND ADJUSTMENTS OR OTHER REPRODUCTIVE HARM SPARK ARRESTOR NOTE For users on U S Forest Land and in the states of California Maine Oregon and Washington All U S Forest Land and the state of California Public Resources Codes 4442 and 4443 Oregon and Washington require by law that certain internal combustion engines operated on forest brush and or grass covered areas be equipped with a spark arrestor maintained in effective working order or the engine be constructed equipped and maintained for the prevention of fire Check with your state or local authorities for regulations pertaining to these requirements Failure to follow these requirements could subject you to liability or a fine This unit is factory equipped with a spark arrestor If it requires replacement ask your LOCAL SERVICE dealer to install the Accessory Part 182153 Spark Arrestor Kit FOR QUESTIONS CALL 1 800 345 8746 IN U S OR 1 800 265 6778 in CANADA RULES FOR SAFE OPERATION The purpose of safety symbols is to DANGER Failure to obey a safety attract your attention to possible A warning will result in serious injury dangers The safety symbols and their to yourself or
6. the proper oil level in the crankcase cannot be overemphasized Check oil before each use and change as needed as shown in Maintenance section Funnel Spout RYOBI FOUR CYCLE ENGINE OIL Fig 16 000000 Fig 17 RECOMMENDED FUEL WARNING Gasoline is extremely flammable and its vapors can explode if they are ignited To avoid serious personal injury always stop the engine and allow it to cool before filling the fuel tank Do not smoke while filling the tank Keep sparks and open flames away from the area WARNING Pressure can build up in the fuel tank Loosen the fuel tank cap slowly to relieve any pressure in the tank Old fuel is usually the main reason for the unit not running properly Be sure to use fresh clean unleaded fuel NOTE Alcohol blended fuel absorbs moisture water As little as 1 moisture in the fuel can cause it to separate and form acids when stored If this type of fuel must be used use fresh fuel less than 60 days old DEFINITION OF BLENDED FUELS Today s fuels are often a blend of gasoline and one or more oxygenates such as ethanol methanol or MTBE ether USE OF BLENDED FUELS If you choose to use a blended fuel or its use is unavoidable the following precautions are recommended 1 Always use fresh unleaded fuel per your operator s manual 2 Use the special additive STA BIL or an equivalent 3 Always agitate the
7. Avoid creating a source of ignition for spilled fuel Do not start the engine until fuel vapors dissipate Always stop the engine and allow it to cool before filling the fuel tank Never remove the cap of the fuel tank or add fuel when the engine is hot Never operate the unit without the fuel cap securely in place Loosen the fuel tank cap slowly to relieve any pressure in the tank Mix and add fuel in a clean well ventilated area outdoors where there are no sparks or flames Slowly remove the fuel cap only after stopping engine Do not smoke while fueling or mixing fuel Wipe up any spilled fuel from the unit immediately Move the unit at least 30 ft 9 1 m from the fueling source and site before starting the engine Do not smoke keep sparks and open flames from the area while adding fuel or operating the unit WHILE OPERATING Never start or run the unit inside a closed room or building Breathing exhaust fumes can kill Operate this unit only in a well ventilated area outdoors Wear safety glasses or goggles that are marked as meeting ANSI 287 1 1989 standards and ear hearing protection when operating this unit Wear a face or dust mask if the operation is dusty Long sleeve shirts are recommended Wear heavy long pants boots and gloves Do not wear loose clothing jewelry short pants sandals or go barefoot Secure hair above shoulder level The cutting attachment shield must always be in place while operati
8. hole unless otherwise indicated in the attachment s operator s manual If the incorrect hole is used it could result in injury or damage to the unit 4 Tighten the knob securely clockwise before using the unit Fig 23 Click Link Primary Hole Lower Boom Release Button Fig 22 15 OPERATING INSTRUCTIONS ADJUSTING TRIMMING LINE LENGTH EDGING Your unit is equipped with a string head that For edging with the trimming head attachment allows the operator to release more trimming locate and lock the release button into the line without stopping the engine To release 90 edging hole or 180 edging hole in the additional line lightly tap the string head on Click Link system Fig 23 Pg 15 the ground Fig 24 while operating the unit at high speed USING THE CUTTING BLADE NOTE Always keep the trimming line fully WARNING Do not sharpen the extended Line release becomes cutting blade Sharpening the blade more difficult as cutting line can cause the blade tip to break becomes shorter off while in use This can result in severe personal injury to yourself or others WARNING Always wear eye hearing foot and body protection to reduce the risk of injury when operating this unit Always use the proper stance for using the brush blade Fig 26 Fig 24 Each time the head is bumped about 1 inch 25 4 mm of trimming line is released A blade in the string guard will cut the line
9. Tree TP720r Turbo Blower TB720r WARNING To avoid serious personal injury shut off the unit prior to removing or installing any attachments Removing the Lower Attachment Boom NOTE To make removing the boom easier place the unit on the ground or on a workbench 1 Loosen the knob counterclockwise Fig 21 2 Press and hold the release button in Fig 21 3 While firmly holding the upper boom pull the lower boom straight out of the Click Link Fig 22 Click Link Release Button Recess Fig 21 If your unit is not assembled or you have more than one attachment use the following instructions Installing the Lower Attachment Boom 1 Remove the hanger from the lower attachment boom Hold the release button in while pushing the lower attachment boom into the Click Link Fig 22 NOTE Aligning the release button with guide recess will help installation Fig 21 2 Basic trimming or using other Ryobi attachments Locate and lock the release button into the primary hole in the Click Link Fig 22 3 Edging with the trimmer head attachment Locate and lock the release button into the 90 edging hole or 180 edging hole in the Click Link Fig 23 CAUTION Make sure the release button is locked in the primary hole and knob is securely tightened before operating this unit CAUTION All attachments are designed to be used in the primary
10. an object that it does not immediately cut Blade thrust can be violent enough to cause the unit and or operator to be propelled in any direction and possibly lose control of the unit Blade thrust can occur without warning if the blade snags stalls or binds This is more likely to occur in areas where it is difficult to Always release the throttle trigger and allow see the material being cut the engine to return to idle speed when not cutting Swing the unit in the same direction as the blade spins which increases the cutting action e Move forward to the next area to be cut after the return swing and plant feet again e The brush blade is designed with a second set of teeth which can be used by removing the blade turning it upside down and reinstalling it To reduce the chance of material wrapping around the blade follow these steps e Cut at full throttle e Swing the unit into material to be cut from your right to your left Fig 27 e Avoid the material just cut as you make the return swing MAINTENANCE AND REPAIR INSTRUCTIONS MAINTENANCE SCHEDULE WARNING To prevent serious These required maintenance procedures should A personal injury never perform any be performed at the frequency stated in the type of maintenance or repairs with table They should also be included as part of the unit running or while it is hot any seasonal tune up Allow the unit to cool down Disconnect spark plug wir
11. and changing the oil Fig 42 Pg 21 22 CHECKING ADJUSTING VALVE TO ROCKER ARM CLEARANCE Every 50 hours of operation inspect the valve to rocker arm clearance using a flat feeler gauge NOTE This requires some disassembly of the engine If you feel unsure or unqualified to perform this take the unit to an authorized service center NOTE The engine must be cold when checking or adjusting the valve clearance This task should be performed inside in a clean dust free area 1 Loosen the two 2 screws shown in figure 44 2 Remove the three 3 screws that secure the engine cover Figs 44 and 45 _ Screws to Remove Screw to Remove Back of Engine Fig 45 MAINTENANCE AND REPAIR INSTRUCTIO 3 Disconnect the spark plug wire 4 Remove the spark plug and then remove the engine cover 5 Remove the rocker arm cover and gasket Fig 46 6 While looking in the spark plug hole pull the starter rope slowly and bring the piston to the top position Check that both rocker arms should move freely If they do not repeat this step This will be the top of the compression stroke Rocker Arm 7 Using a flat feeler gauge measure the clearance between the valve stems and rocker arms Fig 47 The recommended clearance for both intake and exhaust is 003 006 0 076 0 0152 The feeler gauge should slide between the rocker arm and valve stem with a slight amount of resistance
12. correctly gapped spark plug into the cylinder head Torque to 100 110 inelb 11 3 12 3 Nem Ss 0 025 inch 0 655 mm 23 CLEANING AND STORAGE CLEANING WARNING Always turn off your trimmer before you clean or perform any maintenance on it Use a small brush to clean off the outside of the unit Do not use strong detergents on plastic housing or handle They can be damaged by household cleaners that contain aromatic oils such as pine and lemon and by solvents such as kerosene Wipe off any moisture with a soft cloth STORAGE If the unit will be stored for an extended period of time use the following storage procedure 1 Drain all fuel from the fuel tank into a container Do not use fuel that has been stored for more than 60 days Dispose of the old fuel in accordance to Federal State and Local regulations 2 Start the engine and allow it to run until it stalls This ensures that all fuel has been drained from the carburetor 3 Allow the engine to cool Remove the spark plug and put approximately 1 oz 30 ml of any high quality motor oil or 4 cycle oil into the cylinder Pull the starter rope slowly to distribute the oil Reinstall the spark plug 24 4 Thoroughly clean the unit and inspect for any loose or damaged parts Repair or replace damaged parts and tighten loose screws nuts or bolts The unit is now ready for storage 5 To prevent unauthorized use or da
13. cutting Always stop the engine when cutting is delayed or when walking from one cutting location to another If you strike or become entangled with a foreign object stop the engine immediately and check for damage Do not operate before repairing damage Do not operate the unit with loose or damaged parts Stop and switch the engine to off for maintenance repair or for changing the cutting attachment or other attachments Use only genuine Ryobi replacement parts when servicing this unit These parts are available from your authorized service dealer Do not use parts accessories or attachments not authorized by Ryobi for this unit Doing so could lead to serious injury to the user or damage to the unit and void your warranty Keep unit clean of vegetation and other materials They may become lodged between the cutting attachment and shield To reduce fire hazard replace faulty muffler and spark arrestor keep the engine and muffler free from grass leaves excessive grease or carbon build up Read and understand all safety warnings before operating this unit Always use the shoulder harness when using the brush blade accessory Keep the handle between the operator and cutting attachment or blade at all times NEVER cut with the cutting blade located over 30 inches 76 cm or more above the ground level Blade thrust may occur when the spinning blade contacts an object that it does not immediately cut Blade t
14. fuel mix before fueling the unit 4 Drain the tank and run the engine dry before storing the unit USE OF FUEL ADDITIVES The use of fuel additive such as STA BIL Gas Stabilizer or an equivalent will inhibit corrosion and minimize the formation of gum deposits Add 0 8 oz 23 ml per gallon of fuel per instructions on container NEVER add fuel additives directly to the unit s fuel tank Using a fuel additive can keep fuel fresh for up to six 6 months 13 STARTING STOPPING INSTRUCTIONS STARTING STOPPING WARNING Operate this unit only in a well ventilated area outdoors Carbon monoxide exhaust fumes can be lethal in a confined area On Off Stop WARNING Avoid accidental starting Control Be in the starting position whenever pulling the starting rope To avoid serious personal injury the operator and unit must be in a stable position while starting NOTE Keep the throttle control depressed at all times until the engine is warmed up 1 Check oil level in crankcase See Checking the Oil Level in Maintenance section 2 Fill the fuel tank with fresh clean unleaded fuel see page 13 3 Put the On Off Stop Control in the START II position Fig 18 4 Fully press and release the primer bulb slowly 5 to 7 times Fuel should be visible in the bulb Fig 19 5 Place the choke lever in the START A position Fig 19 6 With the unit in the starting position squeeze the throttle control and
15. head to operate incorrectly 3 Insert the ends of the line into the two Fig 34 holding slots Fig 33 2 Hold the inner reel in place and install the Bump Knob in the counterclockwise direction see Fig 28 Line installation is now complete INSTALLING PREWOUND REEL 1 Follow the instructions in The Correct Line to Use 2 Follow the instructions in Removing the Existing Reel 3 Follow the instructions in Reinstalling the Reel 19 MAINTENANCE AND REPAIR INSTRUCTIONS AIR FILTER MAINTENANCE Clean and re oil the air filter every 10 hours of operation Your unit s air filter is one of the most important areas to maintain If it is not maintained you will void the warranty Before cleaning make sure the unit is turned off 1 Place the choke lever in the RUN B position Fig 35 2 Remove the carburetor air filter cover by pulling up the two tabs on the bottom back of the cover then pull out and up Fig 35 3 Remove the air filter Fig 35 Air Filter Carburetor Air Filter Choke Lever Cover Fig 35 4 Wash the filter in detergent and water Fig 36 Rinse the filter thoroughly and allow it to dry Fig 36 20 5 Apply enough clean SAE 30 motor oil to lightly coat the filter Fig 37 Fig 37 6 Squeeze the filter to spread and remove excess oil Fig 38 7 Reinstall the filter Fig 35 Fig 38 8 Reinstall the air filter
16. to others Always explanations deserve your careful follow the safety precautions to attention and understanding The safety reduce the risk of fire electric warnings do not by themselves eliminate shock and personal injury any danger The instructions or warnings they give are not substitutes for proper WARNING Failure to obey a safety accident prevention measures warning can result in serious injury to yourself or to others SYMBOL MEANING CAUTION Failure to obey a safety SAFETY ALERT SYMBOL Indicates warning may result in property danger warning or caution Special damage or personal injury to attention is required in order to avoid yourself or to others serious personal injury May be used _ in conjunction with other symbols or NOTE Advises you of information or pictographs instructions vital to the operation or maintenance of the equipment RULES FOR SAFE OPERATION IMPORTANT SAFETY INFORMATION READ ALL INSTRUCTIONS BEFORE OPERATING Read the instructions carefully Be familiar with the controls and proper use of the unit Do not operate this unit when tired ill or under the influence of alcohol drugs or medication Children and teens under the age of 15 must not use the unit except for teens guided by an adult Inspect the unit before use Replace damaged parts Check for fuel leaks Make sure all fasteners are in place and secure Replace cutting attachment parts that are cr
17. Drain fuel tank Add fresh fuel Cutting head bound with grass Stop engine and clean cutting head Muffler or spark arrestor Clean or replace muffler spark plugged arrestor contact authorized service dealer Engine rope is difficult to Unit operated with low or no Check oil level before starting pull or engine locks oil Oil accumulated in combustion chamber 1 Remove spark plug 2 Drain any oil from the spark plug hole Pull the starter rope several times to remove any excess oil from the cylinder Clean inspect and reinstall spark plug replace if necessary Check oil level before starting Cutting head will not Cutting head out of line Refill with new line advance line Inner reel bound up Replace inner reel Cutting head dirty Clean inner reel and outer spool Line welded Disassemble remove the welded section and rewind the line Line twisted when refilled Disassemble and rewind line Not enough line is exposed Push the Bump Knob and pull out line until 4 in 102 mm of line is outside of the cutting head If further assistance is required contact your authorized service dealer 25 SPECIFICATIONS ENGINE Engine Ty pee lade ope tw alan wT OE AAAs he See oe Air Cooled 4 Cycle Displacement sis dTi nee Ad tena ade tals ei ae 1 6 cu in 26 2 cc 2 te on ate Red cope ghar a Centrifugal Operating RPM Trimmer
18. ZED SERVICE DEALER AND EXPENSE OF DELIVERING IT BACK TO THE OWNER MECHANIC S TRAVEL TIME TELEPHONE OR TELEGRAM CHARGES RENTAL OF A LIKE PRODUCT DURING THE TIME WARRANTY SERVICE IS BEING PERFORMED TRAVEL LOSS OR DAMAGE TO PERSONAL PROPERTY LOSS OF REVENUE LOSS OF USE OF THE PRODUCT LOSS OF TIME OR INCONVENIENCE SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU This warranty gives you specific legal rights and you may also have other rights which vary from state to state This warranty applies to all RYOBI Products manufactured by RYOBI and sold in the United States and Canada To locate your nearest service dealer dial 1 800 345 8746 in the United States or 1 800 265 6778 in Canada RYOBI RYOBI OUTDOOR PRODUCTS 550 N 54th Street Chandler AZ 85226 U S A RYOBI CANADA INC 275 Industrial Rd Cambridge Ontario N1R 6K2 CANADA SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE FOR QUESTIONS CALL 1 800 345 8746 IN U S OR 1 800 265 6778 IN CANADA OPERATOR S MANUAL PART NO 182005 PRINTED IN U S A REV A 7619 9 98
19. a flat blade screwdriver Fig 6 REMOVE THE CUTTING BLADE AND INSTALL THE CUTTING ATTACHMENT Remove the Cutting Blade WARNING To avoid serious personal injury always wear gloves while handling or installing the blade 10 NOTE To make removing or installing the cutting blade or cutting attachment easier place the unit on the ground or on a work bench 1 Install the cutting blade cover Pull the cover around the blade and click the plastic lock 2 Align the shaft bushing hole with the locking rod slot and insert the locking rod into the bushing hole Fig 7 Output Shaft Output Shaft Bushing Locking Rod Locking Shaft Bushing Rod Slot Hole Fig 7 3 While holding the locking rod loosen the nut on the blade by turning it clockwise with a 5 8 inch closed end or socket wrench Fig 8 Fig 8 4 Remove the nut blade retainer and blade Store the nut and blade together for future use in a secure place Store out of reach of children Install the Cutting Attachment 5 Align the shaft bushing hole with the locking rod slot and insert the locking rod into the shaft bushing hole Fig 7 Put the blade retainer onto the output shaft Screw the cutting attachment counterclockwise onto the output shaft Tighten securely Fig 9 NOTE The blade retainer must be installed on the output shaft for the cutting attachment to work correctly ASSEMBLY INSTRUCTIONS Cutting Attachment
20. acked chipped or damaged in any way Make sure the cutting attachment is properly installed and securely fastened Be sure the cutting attachment shield is properly attached and positioned as recommended Failure to so can result in personal injury to the operator and bystanders as well as damage to the unit Use only 0 095 in 2 41 mm diameter genuine Ryobi replacement line Never use metal reinforced line wire or rope etc These can break off and become a dangerous projectile Be aware of the risk of injury to the head hands and feet Clear the area to be cut before each use Remove all objects such as rocks broken glass nails wire or string which can be thrown or become entangled in the cutting attachment Clear the area of children bystanders and pets At a minimum keep all children bystanders and pets outside a 50 ft 15 m radius there still may be a risk to bystanders from thrown objects Bystanders should be encouraged to wear eye protection If you are approached stop the engine and cutting attachment immediately Squeeze the throttle control and check that it returns automatically to the neutral position Make all adjustments or repairs before using unit SAFETY WARNINGS FOR GAS TRIMMERS WARNING Gasoline is highly flammable and its vapors can explode if ignited Take the following precautions Store fuel only in containers specifically designed and approved for the storage of such materials
21. blades with a household cleaner to remove any gum buildup Oil the blade with machine oil to prevent rust e Lock up and store the cutting blade in an appropriate area to protect the blade from unauthorized use or damage Store the unit in a locked up and dry or high and dry place to prevent unauthorized use or damage Keep out of the reach of children Never douse or squirt the unit with water or any other liquid Keep handles dry clean and free from debris Clean after each use see Cleaning and Storage instructions Keep these instructions Refer to them often and use them to instruct other users If you loan someone this unit also loan them these instructions SAVE THESE INSTRUCTIONS OTHER SAFETY WARNINGS e Never store the unit with fuel in the tank inside a building where fumes may reach an open flame or spark e Allow the engine to cool before storing or transporting Be sure to secure the unit while transporting SAFETY AND INTERNATIONAL SYMBOLS This operator s manual describes safety and international symbols and pictographs that may appear on this product Read the operator s manual for complete safety assembly operating and maintenance and repair information SAFETY ALERT SYMBOL Indicates danger warning or caution May be used in conjunction with other symbols or pictographs READ OPERATOR S MANUAL Failure to follow operating instructions and safety precautions in operator s manual can re
22. cover by positioning the notch on top of the air filter cover onto the tab at the top of the back plate Be sure the choke lever in the RUN B position Fig 39 9 Using two fingers on either side of the air filter cover and back plate squeeze together until the cover snaps into place Fig 39 NOTE If the unit is operated without the carburetor air filter cover assembled you will VOID the warranty Back Plate Carburetor Air Filter Cover Tab Slot Zz Fig 39 MAINTENANCE AND REPAIR INSTRUCTIONS CARBURETOR ADJUSTMENT This unit is equipped with a diaphragm type fixed jet carburetor that has been carefully calibrated at the factory In most cases no further adjustment is required Old fuel is usually the main reason for the unit not running properly Drain and refill the tank with clean fresh unleaded fuel prior to doing any adjustments The condition of the air filter is important to the operation of the unit A dirty air filter will restrict the air flow which upsets the fuel air mixture in the carburetor The resulting symptoms are often mistaken for an out of adjustment carburetor Therefore check the condition of the air filter before adjusting the carburetor Refer to Air Filter Maintenance If the following conditions are experienced it may be necessary to adjust the carburetor e The engine will not idle e The engine hesitates or stalls on acceleration e A loss of engine power t
23. d labor The RYOBI Product including any defective part must be returned to an authorized service dealer within the warranty period The expense of delivering the RYOBI Product to the dealer for warranty work and the expense of returning it back to the owner after repair or replacement will be paid for by the owner RYOBI s responsibility in respect to claims is limited to making the required repairs or replacements and no claim of breach of warranty shall be cause for cancellation or rescission of the contract of sale of any RYOBI Product Proof of purchase will be required by the dealer to substantiate any warranty claim All warranty work must be performed by an authorized RYOBI service dealer This warranty is limited to ninety 90 days from the date of original retail purchase for any RYOBI Product that is used for rental or commercial purposes or any other income producing purpose This warranty does not cover any RYOBI Product that has been subject to misuse neglect negligence or accident or that has been operated in any way contrary to the operating instructions as specified in the RYOBI Operator s Manual This warranty does not apply to any damage to the RYOBI Product that is the result of improper maintenance or to any RYOBI Product that has been altered or modified so as to adversely affect the product s operation performance or durability or that has been altered or modified so as to change its intended use The warran
24. e the blade tip to break off while in use This can result in severe personal injury TRIMMER BRUSHCUTTER SAFETY WARNING Thrown objects and rotating cutter can cause severe injury Keep bystanders especially children and pets at least 50 feet 15 m away from the cutting area Plastic string guard must be used when using the string cutting head RULES FOR SAFE OPERATION KNOW YOUR UNIT Starter Rope Grip Primer Spark Plug Air Filter Handgrip Cover On Off Stop Control lt Fuel Cap Choke il Fill bap Lever Plug A lug a Throttle Dipstick N Control Gear Housing S90 ALD lt Blade Guard LA Shoulder xe Harness 4 Tooth Blade with Cover Click Link Shaft Line Cutting Housing Cutting Blade Attachment Shield APPLICATION Use the string head for cutting light grass and weeds Also for decorative trimming around trees fences etc Use the 4 tooth brush blade for weeds and light i brush of up to 1 2 inch in diameter Cutting Attachment Other attachments may be used with this unit See the list of attachments on page 15 ASSEMBLY INSTRUCTIONS ADJUSTING THE J HANDLE INSTALLING THE HARNESS WARNING Aways use the instructions the J handle to the harness when Jeng th cutting J blade to avoid serious personal correct position injury 1 Loosen the four 4 mounting screws on the J handle 1 Push
25. e to For a new engine change the oil after the first Praia 10 hours of operation See Changing the Oil wlio Start Pg 22 FREQUENCY MAINTENANCE REQUIRED REFER TO Daily or Before Check oil level Page 21 Starting Engine Fill fuel tank with correct type of fuel Page 13 Every 10 Hours Clean and re oil air filter Page 20 Every 25 Hours Change oil Page 22 Every 50 Hours Check spark plug condition and gap Page 23 Every 50 Hours Check rocker arm to valve clearance Page 22 and adjust as required 17 MAINTENANCE AND REPAIR INSTRUCTIONS LINE INSTALLATION The trimming line may be replaced by two different methods rewinding the existing reel or installing a prewound reel Rewinding the Existing Reel To rewind the existing reel you must 1 Check for the correct line size 2 Remove the existing reel and spring 3 Wind the existing reel with the new line 4 Reinstall the existing reel and spring The Correct Line to Use WARNING Always use genuine Ryobi replacement line Do not use metal reinforced line It is very important to use the correct size line Use line with a diameter of 0 095 in 2 41 mm The motor may overheat and fail if you use a larger line Removing the Existing Reel 1 Hold the outer spool with one hand and unscrew the Bump Knob clockwise Fig 28 Inspect the captured bolt inside the Bump Knob to make sure it moves freely Replace the Bump Knob i
26. f it is damaged 2 Remove the inner reel and spring Fig 28 Fig 28 3 Use a clean cloth to clean the inner surface of the outer spool Fig 29 NOTE Always clean the inner reel outer spool and shaft before reassembling the cutting head 18 4 Check the indexing teeth on the inner reel and outer spool for wear Fig 30 If necessary remove burrs or replace the reel and spool Fig 30 Winding the Existing Reel 1 Take approximately 30 feet 9 m of new trimming line loop it into two equal lengths Insert each end of the line through one of the two holes in the inner reel Fig 31 Pull the line so that the loop is as small as possible Box NND Liye MAINTENANCE AND REPAIR INSTRUCTIONS 2 Wind the lines in even and tight layers Reinstalling the Reel onto the reel Fig 32 Wind the line in the direction indicated on the inner reel Be sure not to overlap the two ends of the line 1 Insert the ends of the line through the eyelets in the outer spool and place inner reel inside the outer spool Fig 34 Then grasp the ends and pull firmly to release the line from the holding slots in the spool NOTE The spring must be assembled on the inner reel before reassembling the string head Fig 32 NOTE Place your index finger between the two lines to stop the lines from overlapping NOTE Failure to wind the line in the direction indicated will cause the cutting
27. ft Locking Rod Shield Mount Fig 11 4 Center the cutting blade on the pilot step of the output shaft bushing Fig 12 Output Shaft Pilot Step A Output Shaft s Bushing 11 ASSEMBLY INSTRUCTIONS 5 Make sure that the cutting blade is centered e f using a torque wrench and an 5 8 inch on the pilot step and sitting flat against the socket tighten to output shaft bushing Fig 13 325 335 inelb WARNING If the cutting blade is 27 28 ft elb off center the unit will vibrate and 37 38 Nem the blade may fly off which can a e Without a torque wrench use a 5 8 inch cause serious personal injury closed end or socket wrench turning the nut until the blade retainer is snug against the shaft bushing Make sure that the blade is Pilot Step installed correctly then rotate the nut an ey additional 1 4 1 2 turn counterclockwise Fig 15 Fig 13 1 4 1 2 turn 6 Align the shaft bushing hole with the locking Counterclockwise rod slot and insert the locking rod into the bushing hole Fig 7 Pg 10 7 Put the blade retainer and nut on the output Fig 15 shaft Make sure that the blade is installed correctly 9 Remove the locking rod from the locking rod 8 Tighten counterclockwise against the blade slot while holding the locking rod Fig 14 WARNING To avoid serious personal injury or damage to the unit do not start or operate this unit with the locking rod in the locking r
28. ger Tip Trigger Unit Weight No Fuel with J handle Cutting attachment shield and Cutting attachment 13 5 Ibs 6 13 kg Cutting Dual String Cutting Head 4 Tooth Brush Blade Blade Diameter reee inia asides PSS 8 inches 204 mm Shoulder Strap 2 beans coat Ena wha games eels Single Quick Snap Lina Spool we te eerie ach dee Bump Line Releaser Line Spool Diameters Maree LAA Eee 4 inches 101 6 mm Trimming Line Diameter 0 095 inches 2 41 mm Cutting Path Diameter 2 5 bebe ee ae ebb cere 18 inches 44 0 cm 2 daze cade aie ates ola 1 23 1 26 CALIFORNIA EMISSION CONTROL WARRANTY STATEMENT YOUR WARRANTY RIGHTS AND OBLIGATIONS The California Air Resources Board and Ryobi Outdoor Products ROP are pleased to explain the emission control system warranty on your 1995 and later small off road engine In California new small off road engines must be designed built and equipped to meet the State s stringent anti smog standards ROP must warrant the emission control system on your small off road engine for the periods of time listed below provided there has been no abuse neglect or imprope
29. hat is not corrected by new fuel or cleaning the air filter NOTE Warm up the engine for 30 60 seconds before adjusting the carburetor 1 Clean the air filter if it is dirty Refer to Air Filter Maintenance 2 Fill the tank with clean unleaded fuel 3 If the engine stops frequently when idling turn the idle speed screw clockwise 1 2 turn until the engine stabilizes Fig 40 4 If the cutting head keeps rotating after the trigger is released turn the idle speed screw counterclockwise 1 2 turn until the head stops rotating Fig 40 If the unit will still not run properly take it to an authorized service dealer Idle Adjustment CHECKING THE OIL LEVEL CAUTION To prevent extensive engine wear and damage to the unit always maintain the proper oil level in the crankcase Never operate the unit with the oil level below the bottom of the dipstick The importance of checking and maintaining the proper oil level in the crankcase cannot be overemphasized Check oil before each use as follows 1 Make sure the engine is stopped and is cool so the oil has had time to drain into the crankcase 2 Place the unit on a flat level surface to get a proper oil level reading 3 To keep dirt grass clippings etc out of the engine clean the area around the oil fill plug dipstick before removing it 4 Remove the oil fill plug dipstick and wipe the oil off Reinsert it all the way back in 5 Remove the o
30. hrust can be violent enough to cause the unit and or operator to be propelled in any direction and possibly lose control of the unit Blade thrust can occur without warning if the blade snags stalls or binds This is more likely to occur in areas where it is difficult to see the material being cut For operation with the brush blade do not cut anything thicker than 1 2 inch or a violent kickback could occur Do not attempt to touch or stop the blade when it is rotating A coasting blade can cause injury while it continues to spin after the engine is stopped or the throttle trigger is released Maintain proper control until the blade has completely stopped rotating Do not run the unit at high speed when not cutting If you strike or become entangled with a foreign object stop the engine immediately and check for damage Have any damage repaired before attempting further operations Do not operate unit with a bent cracked or dull blade Discard blades that are bent warped cracked or broken Do not sharpen the cutting blade Sharpening the blade can cause the blade tip to break off while in use This can result in severe personal injury Replace the blade Stop the engine IMMEDIATELY if you feel excessive vibration Vibration is a sign of trouble Inspect thoroughly for loose nuts bolts or damage before continuing Repair or replace affected parts as necessary RULES FOR SAFE OPERATION AFTER USE e Clean cutting
31. il fill plug dipstick and check the oil level The level should be up to the top of the dipstick Fig 41 6 If the level is low add a small amount of oil to the crankcase and recheck Continue to do this until the oil level reaches the top of the dipstick Fig 42 NOTE Be careful not to overfill the unit Oil Fill Plug Dipstick O Ring Top of Dore Dipstick Oil Fill Plug Dipstick 21 MAINTENANCE AND REPAIR INSTRUCTIONS CHANGING THE OIL For a new engine change the oil after the first 10 hours of operation Thereafter change the oil after every 25 hours or before storing the unit for an extended period of time It is best to change the oil while the engine is still warm The oil will flow freely and carry away more impurities CAUTION Wear gloves to prevent A injury when handling the unit Change the oil as follows 1 Remove the oil fill plug dipstick 2 Pour the oil into a container by tipping the unit to a vertical position Fig 43 Be sure to allow ample time for complete drainage Wipe up any oil residue on the unit and clean up any oil that may have spilled Dispose of the oil according to Federal State and local regulations 4 Refill the crankcase with 3 4 fluid oz 100 ml of SAE 30 SF SG SH oil Use the bottle and spout from initial use 5 Reinstall the oil fill plug dipstick wo NOTE Make sure the O ring is in place on the oil fill plug dipstick when checking
32. in the listing of the authorized service dealer nearest you Do not return the unit to the retailer NOTE PROOF OF PURCHASE WILL BE REQUIRED FOR WARRANTY SERVICE Make sure this manual is carefully read and understood before starting or operating this equipment THIS PRODUCT IS COVERED BY ONE OR MORE OF THE US PATENTS LISTED BELOW 5 241 932 5 176 116 4 779 405 4 651 422 4 589 742 4 505 040 4 463 498 4 356 605 4 342 235 4 223 441 4 369 742 5 267 536 5 243 937 5 263 454 5 293 847 5 558 057 5 421 292 5 463 809 5 564 374 5 738 062 Des 355 198 OTHER PATENTS PENDING California Emission Regulations 3 ll Rules for Safe Operation 3 8 A Important Safety Information 4 6 Safety and International Symbols 6 7 Know Your Unit 8 Assembly Instructions 9 12 A Adjusting the 9 B Installing the Harness 9 C Removing and Installing the Cutting Attachment Shield 10 D Remove the Cutting Blade and Install the Cutting Attachment 10 E Removing the Cutting Attachment and Installing the Cutting Blade 11 IV Oil and Fuel Information 13 V Starting Stopping Instructions 14 VI Operating Instructions 15 17 A Operating Click Link System 15 B Adjusting Trimming Line Length 16 C Decorative Trimming 16
33. mage lock up and store the unit in a dry well ventilated area NOTE Remove the spark plug and drain all of the oil from the cylinder before attempting to start the trimmer after storage ACCESSORIES REPLACEMENT PARTS 4 Cycle 181786 Oil Fill Plug Dipstick 181975 Spark Plug 180852 Spark Arrestor 182153 Replacement Line Cartridge 147345 Inner Reel Spring 610636 Bump Head Knob Assembly 180814 Fuel irren A eleven 181083 Shoulder Harness 682075 Click Link Coupler 181616 TROUBLESHOOTING PROBLEM ACTION Engine will not start On Off Stop Control is in the Turn On Off Stop Control to the STOP position START position Empty fuel tank Fill fuel tank Primer bulb wasn t pressed Press primer bulb fully and slowly enough 5 7 times Engine flooded Use starting procedure WITHOUT choke lever in the START position Old Fuel Drain fuel tank Add fresh fuel Fouled spark plug Replace or clean spark plug Engine will not idle Air Filter is Plugged Replace or clean air filter fee Drain fuel tank Add fresh fuel Engine will not accelerate Old Fuel Drain fuel tank Add fresh fuel Carburetor misadjusted Adjust carburetor Cutting head bound with grass Stop engine and clean cutting head Engine lacks power or Dirty air filter Clean or replace air filter stalls when cutting Old Fuel
34. ng the unit as a trimmer Do not operate unit without both trimming lines extended and the proper line installed Do not extend the trimming line beyond the length of the shield This unit has a clutch The cutting attachment remains stationary when the engine is idling If it does not have the unit adjusted by an authorized service technician Adjust the J handle to your size to provide the best grip RULES FOR SAFE OPERATION WHILE OPERATING WITH CUTTING BLADE Be sure the cutting attachment is not in contact with anything before starting the unit Use the unit only in daylight or good artificial light Avoid accidental starting Be in the starting position whenever pulling the starter rope The operator and unit must be in a stable position while starting See Starting Stopping Instructions Use the right tool Only use this tool for the purpose intended Do not overreach Always keep proper footing and balance Always hold the unit with both hands when operating Keep a firm grip on both the front and rear handle or grips Keep hands face and feet at a distance from all moving parts Do not touch or try to stop the cutting attachment when it is rotating Do not touch the engine or muffler These parts get extremely hot from operation When turned off they remain hot for a short time Do not operate the engine faster than the speed needed to cut trim or edge Do not run the engine at high speed when not
35. od slot 10 Remove the cutting blade cover by un snapping the plastic lock on the cover and pulling it from the blade Store the cover for future use WARNING Do not sharpen the cutting blade Sharpening the blade can cause the blade tip to break Counterclockwise off while in use This can result in 7 severe personal injury Replace the Fig 14 blade NOTE A replacement cutting blade Part 145873 can be purchased from you local authorized dealer 12 OIL AND FUEL INFORMATION RECOMMENDED OIL TYPE Using the proper type and weight of oil in the crankcase is extremely important Check the oil before each use and change the oil regularly Failure to use the correct oil or using dirty oil can cause premature engine wear and failure Use a high quality SAE 30 weight oil of API American Petroleum Institute service class SG SF SH ADDING OIL TO CRANKCASE INITIAL USE Your unit is supplied with one bottle of oil 3 4 fluid oz 100 ml SAE 30 SF SG SH Fig 16 1 Open the bottle of oil 2 Install the funnel spout 3 Place the unit on a flat level surface 4 Remove the oil plug dipstick from the crankcase Pour the entire bottle of oil into the crankcase Fig 17 NOTE Save the bottle and spout for future use NOTE Never add oil to the fuel or fuel tank 5 Wipe up any oil that may have spilled and reinstall the oil fill plug dipstick The importance of checking and maintaining
36. pull the starter rope briskly until the engine sounds like it wants to run normally 2 to 5 pulls Fig 20 7 Place the choke lever in the RUN B position Fig 19 The lever should snap up into place 8 Pull the starter rope briskly 1 to 3 times to start the engine Fig 20 9 If the engine does not start repeat steps 5 through 8 NOTE If the engine floods while attempting to start the unit place the choke lever in the RUN B position squeeze the throttle control and pull the starter rope briskly The engine should start within three 3 to eight 8 pulls 10 Keep throttle control depressed for 5 to 10 seconds to warm up engine Throttle NOTE Choking is not required when starting a Control warm engine Start a warm engine with the On Off Stop Control in the START position and the choke lever in the RUN B position 11 To stop the engine put the On Off Stop Control in the STOP position Fig 18 Primer 14 OPERATING INSTRUCTIONS OPERATING THE CLICK LINK SYSTEM This unit is equipped with a Click Link System which enables optional attachments to be installed on the unit The optional attachments are Blower Vacuum BV720r Cultivator eed ee GC720r Edger LE720r Hedge Trimmer HS720r Snow Thrower ST720r Straight Shaft Trimmer 55725 B720r
37. r maintenance of your small off road engine Your emission control system may include parts such as the carburetor or fuel injection system the ignition system and catalytic converter Also included may be hoses belts connectors and other emission related assemblies Where a warrantable condition exists ROP will repair your small off road engine at no cost to you including diagnosis parts and labor The 1995 and later small off road engines are warranted for two years If any emission related part on your engine is defective the part will be repaired or replaced by ROP OWNER S WARRANTY RESPONSIBILITIES As the small off road engine owner you are responsible for the performance of the required maintenance listed in your operator s manual ROP recommends that you retain all receipts covering maintenance on your small off road engine but ROP cannot deny warranty solely for the lack of receipts or for your failure to ensure the performance of all scheduled maintenance As the small off road engine owner you should however be aware that ROP may deny you warranty coverage if your small off road engine or a part has failed due to abuse neglect improper maintenance or unapproved modifications You are responsible for presenting your small off road engine to a Ryobi Authorized Service Center as soon as a problem exists The warranty repairs should be completed in a reasonable amount of time not to exceed 30 days If yo
38. rranty The use of add on or modified parts can be grounds for disallowing a warranty claim The manufacturer is not liable to cover failures or warranted parts caused by the use of add on or modified parts In order to file a claim go to your nearest Authorized Ryobi Service Center Warranty services or repairs will be provided at all Authorized Ryobi Service Centers Any manufacturer approved replacement part may be used in the performance of any warranty maintenance or repair of emission related parts and will be provided without charge to the owner Any replacement part that is equivalent in performance or durability may be used in non warranty maintenance or repair and will not reduce the warranty obligations of the manufacturer The following components are included in the emission related warranty of the engine air filter carburetor primer fuel lines fuel pick up fuel filter ignition module spark plug and muffler 27 LIMITED TWO YEAR WARRANTY RYOBI OUTDOOR PRODUCTS warrants each new RYOBI Product for two 2 years according to the following terms This warranty extends to the original retail purchaser only and commences on the date of original retail purchase Any part of the RYOBI Product manufactured or supplied by RYOBI and found in the reasonable judgement of RYOBI to be defective in material or workmanship will be repaired or replaced by an authorized RYOBI service dealer without charge for parts an
39. sult in serious injury Read operator s manual before starting or operating this unit FOR SERVICE INFORMATION CALL USA 1 800 345 8746 CANADA 1 800 265 6778 WEAR EYE AND HEARING PROTECTION WARNING Thrown objects and loud noise can cause severe eye injury and hearing loss Wear eye protection meeting ANSI 287 1 1989 standards and ear protection when operating this unit KEEP BYSTANDERS AWAY WARNING Keep all bystanders especially children and pets at least 50 feet 15 m away from the trimming area PRIMER BULB Push primer bulb fully and slowly 5 to 7 times UNLEADED FUEL Always use clean fresh unleaded fuel RULES FOR SAFE OPERATION SYMBOL MEANING INDICATES OIL Refer to operator s manual for the proper type of oil A B CHOKE CONTROL A START position B RUN position THROWN OBJECTS AND ROTATING CUTTER CAN CAUSE SEVERE INJURY WARNING Do not operate unit without string guard in place Keep away from rotating cutter IGNITION SWITCH ON START RUN IGNITION SWITCH OFF or STOP HOT SURFACE WARNING Do not touch a hot muffler gear box or cylinder You may get burned These parts get extremely hot from operation and bili remain hot for a short time after the unit is turned off SHARP BLADE WARNING Sharp blade on string guard To prevent serious injury do not touch line cutting blade BRUSHCUTTERS Replace dull blade Do not sharpen the brush blade Sharpening the blade can caus
40. the strap through the center of the 2 Slide the J handle until the arrow bar on buckle the decal is flush to the edge of the clamp 2 Pull the strap over the cross bar and down assembly Fig 1 through the slot in the buckle Fig 3 3 While holding the unit in the operating 3 Snap it on to the support fitting Fig 4 position Fig 2 adjust rotate the handle 4 Adjust length to fit the operator s size Pull forward and back to a position that tab to lengthen pull strap to shorten Fig 5 provides you the best grip 4 Tighten the mounting screws ASSEMBLY INSTRUCTIONS REMOVING AND INSTALLING CUTTING ATTACHMENT SHIELD Remove the cutting attachment shield when using the unit as a brushcutter WARNING The cutting attachment shield should NOT be installed when operating the unit with a blade Remove the cutting attachment shield before removing or installing the blade Remove the cutting attachment shield from the shield mount by removing the three 3 screws with a flat blade screwdriver Fig 6 Store parts for future use Fig 6 Install the cutting attachment shield when using the unit as a grass trimmer WARNING To avoid serious personal injury the cutting attachment shield SHALL be in place at all times while operating the unit as a grass trimmer Install the cutting attachment shield on the shield mount by inserting the three 3 screws into the shield mount Tighten securely with
41. to the proper length if excess line is released CAUTION Do not remove or alter the line cutting blade assembly Excessive line length will cause clutch to over heat and may result in serious personal injury For best results tap the head on bare ground or hard soil If line release is attempted in tall grass the engine may stall DECORATIVE TRIMMING Decorative trimming is accomplished by removing all vegetation around trees posts fences etc Rotate the entire unit so that the cutting head is at a 30 angle to the ground Fig 25 WARNING The blade continues to spin after the engine is turned off The coasting blade can seriously cut you if accidentally touched Do not clear away cut material with the engine running or blade turning To avoid serious personal injury turn off engine and allow the blade to stop before removing materials wrapped around the blade shaft 16 OPERATING INSTRUCTIONS Cutting Blade Operating Tips To establish a rhythmic cutting procedure e Plant feet firmly comfortably apart e Bring the engine to full throttle before entering the material to be cut The blade has maximum cutting power at full throttle and is less likely to bind stall or cause blade thrust which can result in serious personal injury to the operator or others Cut while swinging the upper part of your body from right to left WARNING Blade thrust may occur when the spinning blade contacts
42. ty does not extend to repairs made necessary by normal wear or by the use of parts or accessories which are either incompatible with the RYOBI Product or adversely affect its operation performance or durability In addition this warranty does not cover A Tune ups Spark Plugs Carburetor Adjustments Filters B Wear items Bump Knobs Outer Spools Cutting Line Inner Reels Starter Pulley Starter Ropes Drive Belts RYOBI reserves the right to change or improve the design of any RYOBI Product without assuming any obligation to modify any product previously manufactured ALL IMPLIED WARRANTIES ARE LIMITED IN DURATION TO THE TWO Q YEAR WARRANTY PERIOD OR NINETY ARE YS FOR PRODUCTS USED FOR ANY CO RCIAL PURPOSE ACCORDINGLY ANY SUCH IMPLIED WARRANTIES INCLUDING MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE OR OTHERWISE ARE DISCLAIMED IN THEIR ENTIRETY AFTER THE EXPIRATION OF THE APPROPRIATE TWO YEAR OR NINETY DAY WARRANTY PERIOD RYOBI S OBLIGATION UNDER THIS WARRANTY IS STRICTLY AND EXCLUSIVELY LIMITED TO THE REPAIR OR REPLACEMENT OF DEFECTIVE PARTS AND ROP DOES NOT ASSUME OR AUTHORIZE ANYONE TO ASSUME FOR THEM ANY OTHER OBLIGATION SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU RYOBI ASSUMES NO RESPONSIBILITY FOR INCIDENTAL CONSEQUENTIAL OR OTHER DAMAGES INCLUDING BUT NOT LIMITED TO EXPENSE OF RETURNING THE RYOBI PRODUCT TO AN AUTHORI
43. u have any questions regarding your warranty rights and responsibilities you should call 1 800 345 8746 MANUFACTURER S WARRANTY COVERAGE e The warranty period begins on the date the engine or equipment is delivered to the retail purchaser The manufacturer warrants to the initial owner and each subsequent purchaser that the engine is free from defects in material and workmanship which cause the failure of a warranted part for a period of two years Repair or replacement of warranted part will be performed at no charge to the owner at an Authorized Ryobi Service Center For the nearest location please contact Ryobi at 1 800 345 8746 Any warranted part which is not scheduled for replacement as required maintenance which is scheduled only for regular inspection to the effect of Repair or replace as necessary is warranted for the warranty period Any warranted part which is scheduled for replacement as required maintenance will be warranted for the period of time up to the first scheduled replacement point for that part The owner will not be charged for diagnostic labor which leads to the determination that a warranted part is defective if the diagnostic work is performed at an Authorized Ryobi Service Center The manufacturer is liable for damages to other engine components caused by the failure of a warranted part still under warranty Failures caused by abuse neglect or improper maintenance are not covered under wa
44. without binding 8 If the clearance is not within specification adjust as follows a Turn the adjusting nut using a 5 16 inch 8 mm wrench or nut driver Fig 47 To increase the clearance turn the adjusting nut counterclockwise To decrease the clearance turn the adjusting nut clockwise b Recheck both valve clearances and adjust as necessary 9 Reinstall the rocker arm cover using a new gasket Torque the screw to 20 30 inelb 2 2 3 4 Nem 10 Reinstall the engine cover Check alignment of the cover before tightening the screws Be sure to tighten the screws loosened in step 1 11 Check the spark plug see Replacing the Spark Plug and reinstall Torque the spark plug to 100 110 inelb 11 3 12 3 Nem Reinstall the spark plug wire Feeler Rocker Arm Adjusting Nut REPLACING THE SPARK PLUG Use a Champion RDZ19H spark plug or equivalent Correct air gap is 0 025 in 0 655 mm Remove plug after every 50 hours of operation and check its condition 1 Stop the engine and allow it to cool Pull the wire off of the spark plug 2 Clean around the spark plug and remove it from the cylinder head Use a 5 8 inch socket to remove the plug CAUTION Replace a cracked fouled or dirty spark plug Do not sand blast scrape or clean electrodes because the engine could be damaged by grit entering the cylinder 3 Set the air gap at 0 025 in 0 655 mm using a wire feeler gauge Fig 48 Install a

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