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Keep away from corrosive agents such as garden chemicals and de-icing salts. .Abide by all ISO and local regulations for the safe storage and handling of gasoline. AIR FILTER COVER KNOB PULL COVER TO OPEN MAINTENANCE CLEANING THE EXHAUST PORT AND MUFFLER Depending on the type of fuel used, the type and amount of oil used, and/or your operating conditions, the exhaust port, muffler, and/or spark arrestor screen may become blocked with carbon deposits. If you notice a power loss with this gas-powered product, you may need to remove these deposits to restore performance. We highly recommend that only qualified service technicians perform this service. SPARK ARRESTOR The spark arrestor must be cleaned or replaced every 25 hours or yearly to ensure proper performance of the product. Spark arrestors may be in different locations depending on the model purchased. Please contact the nearest service dealer for the location of the spark arrestor for this model. REPLACING AND CLEANING AIR FILTER See Figures 28 - 29. A wet or dirty air filter can affect the way the engine starts, performs, and wears. The air filter should be checked and cleaned after 5 hours of operation. For best performance, the air filter should be replaced once each year. To clean the air filter: .Loosen the knob on the air filter cover. .Remove the cover. .Lift the edge of the air filter carefully and peel it out. .Wash the air filter with warm, soapy water. .Rinse and squeeze to dry. .Reinstall the air filter. NOTE: Make sure the filter is seated properly inside the cover. Installing the filter incorrectly will allow dirt to enter the engine, causing rapid engine wear. ...Reinstall the cover. .Tighten knob to secure. FUEL CAP WARNING: A leaking fuel cap is a fire hazard and must be replaced immediately. The fuel cap contains a non-serviceable filter and a check valve. A clogged fuel filter will cause poor engine perfor- mance. If performance improves when the fuel cap is loos- ened, check valve may be faulty or filter clogged. Replace fuel cap if required. SPARK PLUG REPLACEMENT This engine uses a Champion RCJ-6Y or NGK BPMR7A Fig. 28 AIR FILTER COVER AIR FILTER Fig. 29 AIR FILTER BASE STORAGE (1 MONTH OR LONGER) .Drain all fuel from tank into a container approved for gasoline. Run engine until it stops. .Clean all foreign material from the trimmer. Store idle unit indoors in a dry, well-ventilated area that is inaccessible to children. Keep away from corrosive agents such as garden chemicals and de-icing salts. .Abide by all ISO and local regulations for the safe storage and handling of gasoline. AIR FILTER COVER KNOB PULL COVER TO OPEN spark plug with .025 in. electrode gap. Use an exact replacement and replace annually. 21 22 TROUBLESHOOTING IDLE SPEED SCREW Problem Possible Cause Solution Engine will not start. No spark. No fuel. Engine is flooded. C h e c k s p a r k . R e m ove s p a r k p l u g . R e a t t a c h the spark plug cap and lay spark plug on metal cylinder. Pull the rope and watch for spark at spark plug tip. If there is no spark, repeat test with a new spark plug. Push primer bulb until bulb is full of fuel. If bulb does not fill, primary fuel delivery system is blocked. Contact a service dealer. If primer bulb fills, engine may be flooded, proceed to next item. Set the start lever to the START position. Pull the starter grip repeatedly until the engine starts and runs. NOTE: Depending on the severity of the flooding, this may require numerous pulls of the rope. See Figure 22. Engine does not reach full speed and emits excessive smoke. Incorrect oil/fuel mixture. Air filter is dirty. Spark arrestor screen is dirty. Spark plug fouled. Use fresh fuel and the correct 2-cycle oil mix. (50:1). Clean air filter. Refer to Replacing and Cleaning Air Filter earlier in this manual. Contact a servicing dealer. Clean or replace spark plug. Reset spark plug gap. Refer to Spark Plug Replacement earlier in this manual. Engine star ts, r uns, and accelerates but will not idle. Idle speed screw on carburetor needs adjustment. Turn idle speed screw clockwise to increase idle speed. See Figure 30. String will not advance. String is welded to itself. Not enough string on spool. String is worn too short. String is tangled on spool. Engine speed is too slow. Lubricate string with silicone spray. Install more string. Refer to String Replacement earlier in this manual. Pull strings while alternately pressing down on and releasing spool retainer. Remove string from spool and rewind. Refer to String Replacement earlier in this manual. Advance string at full throttle. Fig. 30 TROUBLESHOOTING Problem Possible Cause Solution Spool retainer hard to turn Screw threads are dirty or damaged. Clean threads and lubricate with grease — if no improvement, replace the spool retainer. Grass wraps around drive shaft housing and string head. Cutting tall grass at ground level. Operating trimmer at part throttle. Cut tall grass from the top down to prevent wrapping. Op...

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