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| TROUBLESHOOTING | ||
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PROBLEM |
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| REMEDY | |
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Engine will not start. | No spark. |
| Check spark. Remove spark plug. Reattach the spark plug cap and lay | ||
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| spark plug on metal cylinder. Pull the starter rope and watch for spark at |
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| spark plug tip. If there is no spark, repeat test with a new spark plug. |
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| No fuel. |
| Push primer bulb until bulb is full of fuel. If bulb does not fill, primary |
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| fuel delivery system is blocked. Contact a servicing dealer. If primer |
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| bulb fills, engine may be flooded, proceed to next item. |
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| Engine is flooded. |
| Pull starter three times with choke lever at “RUN”. If engine does not |
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| start, move choke lever to “START” and repeat normal starting pro- |
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| cedure. If engine still fails to start, repeat procedure with a new spark |
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| plug. |
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| Starter rope pulls harder now | Contact a servicing dealer. | |
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| than when new. |
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Engine starts but will not | Engine requires approximately | Allow engine to completely warm up. If engine does not accelerate | |||
accelerate. |
| three minutes to warm up. | after three minutes, contact a servicing dealer. | ||
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Engine starts but will only | Carburetor requires adjustment. | Contact a servicing dealer. | |||
run at high speed at half |
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choke. |
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Engine does not reach | Check oil fuel mixture. |
| Use fresh fuel and the correct | ||
full speed and emits | Air filter is dirty. |
| Clean air filter. Refer to “Replacing and Cleaning Air Filter” earlier in | ||
excessive smoke. |
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| Spark arrestor screen is dirty. | Contact a servicing dealer. | |
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Engine starts, runs, and | Idle speed screw on carburetor | Turn idle speed screw clockwise to increase idle speed. | |||
accelerates but will not |
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idle. |
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Bar and chain running | Check chain tension for overtight | Tension chain. Refer to “Chain Tension” earlier in this manual. | |||
hot and smoking. | condition |
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| Chain oil tank empty |
| Check oil tank. |
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Motor runs, but chain is | Chain tension too | tight. | Retension chain. Refer to “Chain Tension” earlier in this manual. | ||
not rotating. |
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| Refer to “Replacing the Bar and Chain” earlier in this manual. | |
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| Check guide bar and chain as- | ||
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| sembly. |
| Inspect guide bar and chain for damage. |
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| Check guide bar and chain for | ||
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| damage. |
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String won’t advance | String is welded to itself. |
| Lubricate string with silicone spray. | ||
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| Not enough string on spool. | Install more string. Refer to “String Replacement” earlier in this | |
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| manual. |
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| String is worn too short. |
| Pull strings while alternately pressing down on and releasing spool |
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| retainer. |
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| String is tangled on spool. | Remove string from spool and rewind. Refer to “String Replacement” | |
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| earlier in this manual. |
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| Engine speed is too slow. |
| Advance string at full throttle. |
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Spool | retainer | hard to | Screw threads are dirty or | Clean threads and lubricate with grease - if no improvement, replace | |
turn |
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| damaged. |
| the spool retainer. |
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Grass | wraps | around | Cutting tall grass at ground | Cut tall grass from the top down to prevent wrapping. | |
driveshaft housing and | level. |
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string head |
| Operating trimmer at | part | Operate trimmer at full throttle. | |
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| throttle. |
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22
