Ryobi 4 Cycle Trimmer Owners Manual
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MAINTENANCE AND REPAIR INSTRUCTIONS 21 CARBURETOR ADJUSTMENT The idle speed of the engine is adjustable. An idle adjustment screw is reached though a hole in the top of the engine cover (Fig 37). NOTE:Careless adjustments can seriously damage your unit. An authorized service dealer should make carburetor adjustments. Check Fuel 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. Refer to Oil and Fuel Information. Clean Air Filter The condition of the air filter is important to the operation of the unit. A dirty air filter will restrict air flow and change the air/fuel mixture. This is often mistaken for an out of adjustment carburetor. Check the condition of the air filter before adjusting the idle speed screw. Refer to Air Filter Maintenance. Adjust Idle Speed Screw WARNING:The cutting attachment may be spinning during idle speed adjustment. Wear protective clothing and observe all safety instructions to prevent serious personal injury. If after checking the fuel and cleaning the air filter the engine still will not idle, adjust the idle speed screw as follows. 1. Start the engine and let it run at a high idle for a minute to warm up. 2. Release the throttle trigger and let the engine idle. If the engine stops, insert a small phillips or flat blade screwdriver into the hole in the engine cover (Fig. 37). Turn the idle speed screw in, clockwise, 1/8 of a turn at a time (as needed) until the engine idles smoothly. NOTE:The cutting attachment should not rotate when the engine idles.3. If the cutting attachment rotates when the engine idles, turn the idle speed screw counterclockwise 1/8 of a turn at a time (as needed), to reduce idle speed. Checking the fuel, cleaning the air filter, and adjusting the idle speed screw should solve most engine problems. If not and: •The engine will not idle, •The engine hesitates or stalls on acceleration, •There is a loss of engine power, have the carburetor adjusted by an authorized service dealer. WARNING:When the unit is turned off make sure the cutting attachment has stopped before the unit is set down to prevent serious personal injury. Idle Adjustment Screw Fig. 37
MAINTENANCE AND REPAIR INSTRUCTIONS 22 4. Disconnect the spark plug wire. 5. Clean dirt from around the spark plug. Remove the spark plug from the cylinder head by turning a 5/8 in. socket counterclockwise. 6. Remove the engine cover (Fig. 39). 7. Clean dirt from around the rocker arm cover. Remove the screw holding the rocker arm cover with a large flat blade screwdriver or Torx T25 bit (Fig. 41). Remove the rocker arm cover and gasket. 3. Remove the screw behind the engine cover (Fig. 40). Remove Screws Rocker Arm Cover Screw Fig. 38 Fig. 40 Fig. 41 Engine CoverSpark Plug Hole 2. Remove the two (2) screws on top of the engine cover with a phillips screwdriver (Fig. 39). Fig. 39 Muffler Cover Engine Cover Muffler ROCKER ARM CLEARANCE This requires disassembly of the engine. If you feel unsure or unqualified to perform this, take the unit to an authorized service center. NOTE:Inspect the valve to rocker arm clearance with a feeler gauge after the first 10 hours of operation and then every 50 hours of operation thereafter. •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. Remove the muffler cover by pressing down on the corner with a flat blade screwdriver (Fig. 38). Slide the notches on the sides of the muffler cover over the tabs on the engine cover and remove 8. Pull the starter rope slowly to bring the piston to the top of its travel, (known as top dead center). Check that: •The piston is at the top of its travel while looking in the spark plug hole (Fig. 41). •Both rocker arms move freely, and both valves are closed. If not, repeat this step. Top View Of The Engine
MAINTENANCE AND REPAIR INSTRUCTIONS 23 10. If the clearance is not within specification: a. Turn the adjusting nut using a 5/16 inch (8 mm) wrench or nut driver (Fig. 42). •To increase clearance, turn the adjusting nut counterclockwise. •To decrease clearance, turn the adjusting nut clockwise. b. Recheck both clearances, and adjust as necessary. 11. Reinstall the rocker arm cover using a new gasket. Torque the screw to 20–30 in •lb (2.2–3.4 N•m). NOTE:A rocker arm cover gasket, Part # 182099 can be purchased from your local authorized dealer. 12. Reinstall the engine cover. Check alignment of the cover before tightening the screws. Tighten screws. 13. Replace the muffler cover. Slip the long tabs on the muffler cover into the engine cover. Slide the notches on the side of the muffler cover over the tabs on the engine cover and snap into place (Fig. 38). 14. Check the spark plug and reinstall. See Replacing the Spark Plug . 15. Replace the spark plug wire. 9. Slide the feeler gauge between the rocker arm and the valve return spring. Measure the clearance between the valve stem and rocker arm (Fig 42). Do both intake and exhaust valves. Adjusting Nuts Feeler GaugeRocker Arms Gasket Fig. 42 Fig. 43 The recommended clearance for both intake and exhaust is .003 – .006 in. (.076 – 0.152 mm). Use a standard automotive .005 in. (0.127 mm) feeler gauge. The feeler gauge should slide between the rocker arm and valve stem with a slight amount of resistance, without binding (Fig. 43). Feeler Gauge Adjusting Nut Rocker Arm .003–.006 in. (.076–0.152 mm) Valve Stem
MAINTENANCE AND REPAIR INSTRUCTIONS 24 ACCESSORIES/REPLACEMENT PARTS 4-Cycle Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181786 Oil Fill Plug / Dipstick . . . . . . . . . . . . . . . . . . . . . 182378 Spark Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180852 Spark Arrestor Screen . . . . . . . . . . . . . . . . . . . . . 180890 Replacement Line Cartridge . . . . . . . . . . . . . . . . 181460 Inner Reel Spring . . . . . . . . . . . . . . . . . . . . . . . . 181465 Bump Head Knob Assembly . . . . . . . . . . . . . . . . 181468 Fuel Cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181083 Shoulder Harness . . . . . . . . . . . . . . . . . . . . . . . . 682075 Click-Link Coupler . . . . . . . . . . . . . . . . . . . . . . . 181616 0.025 in. (0.655 mm.) REPLACING THE SPARK PLUG Use only genuine Ryobi spark plugs. The correct air gap is 0.025 in. (0.655 mm.). Remove the plug after every 50 hours of operation and check its condition. 1. Stop the engine and allow it to cool. Grasp the plug wire firmly and pull the cap from the spark plug. 2. Clean dirt from around the spark plug. Remove the spark plug from the cylinder head by turning a 5/8 in. socket counterclockwise. 3. Replace cracked, fouled or dirty spark plug. Set the air gap at 0.025 in. (0.655 mm.) using a feeler gauge (Fig. 44). Fig. 44 CAUTION:Do not sand blast, scrape, or clean electrodes. Grit in the engine could damage the cylinder. 4. Install a correctly gaped spark plug in the cylinder head. Tighten by turning the 5/8 in. socket clockwise until snug. If using a torque wrench torque to; 110-120 in.•lb. (12.3-13.5 N•m). Do not over tighten. NOTE:A replacement spark plug Part # 180852 can be purchased from your local authorized dealer. Fig. 45 Muffler Spark Arrestor Screen Spark Arrestor CoverScrew Tab Slot SPARK ARRESTOR MAINTENANCE 1. Remove the muffler cover. See Rocker Arm Clearance , Pg. 22. 2. With a flat blade screwdriver or Torx T20 bit, remove the screw attaching the spark arrestor cover to the muffler (Fig. 45). 3. Pull the tab on the spark arrestor cover out of the muffler. Remove the spark arrestor cover. 4. Remove the spark arrestor screen from the spark arrestor cover. 5. Clean the spark arrestor screen with a wire brush, or replace. 6. Reinstall the spark arrestor screen, spark arrestor cover, and screw. NOTE:A replacement spark arrestor screen Part # 180890 can be purchased from your local authorized dealer.
CLEANING AND STORAGE 25 LONG TERM STORAGE If the unit will be stored for an extended time, 1. Drain all gasoline from the gas tank into a container . Do not use gas that has been stored for more than 60 days. Dispose of the old gasoline in accordance to Federal, State, and Local regulations. 2. Start the engine and allow it to run until it stalls. This ensures that all gasoline has been drained from the carburetor. 3. Allow the engine to cool. Remove the spark plug and put 1 oz. (30 ml) of high quality motor oil into the cylinder. Pull the starter rope slowly to distribute the oil. Reinstall the spark plug. NOTE:Remove the spark plug and drain all of the oil from the cylinder before attempting to start the trimmer after storage. 4. Change the oil. See Changing the Oil, Pg. 19. Dispose of the old oil in accordance to Federal, State, and Local regulations. 5. 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 ready for storage. TRANSPORTING •Allow the engine to cool before transporting. •Secure the unit while transporting. •Drain the gas tank before transporting. •Tighten gas cap before transporting. CLEANING WARNING:To avoid serious personal injury, always turn your trimmer off and allow it to cool before you clean or do any maintenance on it. Use a small brush to clean off the outside of the unit. Do not use strong detergents. Household cleaners that contain aromatic oils such as pine and lemon, and such as kerosene, can damage plastic housing or handle. Wipe off any moisture with a soft cloth. STORAGE •Never store the unit with gasoline in the tank where fumes may reach an open flame or spark. •Allow the engine to cool before storing. •Store the unit locked up to prevent unauthorized use or damage. •Store the unit in a dry, well ventilated area. •Store the unit out of the reach of children. Store the unit in one of three (3) positions: 1. The unit hanging by the cutting attachment end. 2. The unit hanging by the engine. 3. The unit setting upright on the cutting attachment shield and engine feet.
TROUBLESHOOTING 26 CAUSE ACTION Oil in cutting head Clean the cutting attachment If further assistance is required, contact your authorized service dealer. CAUSE ACTION Cutting head bound with grass Stop the engine and clean cutting attachment Cutting head out of line Refill with new line Inner reel bound up Replace the 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 the line Not enough line is exposed Push the Bump Knob and pull out line until 4 inches (102 mm) of line is outside of the cutting attachment CAUSE ACTION Old Gasoline Drain fuel tank / Add fresh Gasoline Improper carburetor adjustment Take to an authorized service dealer for carburetor adjustment Clogged Spark Arrestor Screen Clean or Replace. See Pg. 24 CAUSE ACTION Ignition switch is OFF Turn switch to ON Empty fuel tank Fill fuel tank Primer bulb wasnt pressed enough Press primer bulb fully and slowly 5-7 times Engine flooded Use starting procedure with choke lever in the RUN position, Pg. 12 Old Gasoline Drain fuel tank / Add fresh Gasoline Fouled spark plug Replace or clean the spark plug ENGINE WILL NOT START ENGINE WILL NOT IDLE ENGINE WILL NOT ACCELERATE ENGINE LACKS POWER OR STALLS WHEN CUTTING CAUSE ACTION Air Filter is Plugged Replace or clean the air filter Old Gasoline Drain fuel tank / Add fresh Gasoline Improper carburetor adjustment Adjust per instruction Pg. 20 CAUSE ACTION Old Gasoline Drain gas tank / Add fresh Gasoline Improper carburetor adjustment Take to an authorized service dealer for carburetor adjustment Cutting head bound with grass Stop the engine and clean the cutting attachment Dirty air filter Clean or replace the air filter Clogged Spark Arrestor Screen Clean or Replace. See Pg. 24 CUTTING HEAD WILL NOT ADVANCE LINE CUTTING LINE ADVANCES UNCONTROLLABLY
SPECIFICATIONS 27 ENGINE Engine Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air-Cooled, 4-Cycle Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6 cu. in. (26.2 cc) Clutch Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Centrifugal Operating RPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6,800-7,800 rpm Idle Speed RPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,800 rpm Ignition Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electronic Ignition Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rocker Switch Valve clearance (intake and exhaust) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .003–.006 in. (.076–.0152 mm) Spark Plug Gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.025 inch (0.655 mm) Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SAE 30 Oil Crankcase Oil Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.4 oz (100 ml) Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unleaded Carburetor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diaphragm, All-Position Starter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Auto Rewind Muffler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Baffled with Guard Throttle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Manual Spring Return Fuel Tank Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 oz (591 ml) Fuel Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HD Polyethylene ENGINE DRIVE SHAFT & CUTTING ATTACHMENT Drive Shaft Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Aluminum Tube (Click-Link) Throttle Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Finger-Tip Trigger Unit Weight (No Fuel, with J-handle, Cutting attachment shield and Cutting attachment) . . . . . . . 13.5 lbs (6.13 kg) Cutting Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dual String Cutting Head Line Spool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bump Line Releaser Line Spool Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 inches (76.2 mm) Trimming Line Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.080 inches (2.03 mm) Cutting Path Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 inches (38.1 cm)
29 The California Air Resources Board and Ryobi Outdoor Products (ROP), are pleased to explain the emission control system warranty on your 2000 and later small off-road engine. In California, new small off-road engines must be designed, built and equipped to meet the States 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 improper 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 2000 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. OWNERS WARRANTY RESPONSIBILITIES: •As the small off-road engine owner, you are responsible for the performance of the required maintenance listed in your operators 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 you have any questions regarding your warranty rights and responsibilities, you should call 1-800-345-8746. MANUFACTURERS WARRANTY COVERAGE: •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 warranty. •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. CALIFORNIA EMISSION CONTROL WARRANTY STATEMENT YOUR WARRANTY RIGHTS AND OBLIGATIONS
ALL IMPLIED WARRANTIES ARE LIMITED IN DURATION TO THE TWO (2) YEAR WARRANTY PERIOD OR NINETY (90) DAYS FOR PRODUCTS USED FOR ANY COMMERCIAL 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 AUTHORIZED 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 OUTDOOR PRODUCTS 550 N. 54th Street Chandler, AZ 85226 U.S.A. RYOBI CANADA INC. 275 Industrial Rd Cambridge, Ontario N1R 6K2 CANADA 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 and 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 products operation, performance or durability or that has been altered or modified so as to change its intended use. The warranty 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. 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. 182394 REV. A (9554) PRINTED IN U.S.A.5/99 LIMITED TWO-YEAR WARRANTY