TROUBLESHOOTING
IF THESE SOLUTIONS DO NOT SOLVE THE PROBLEM CONTACTYOUR AUTHORIZED SERVICE DEALER.
| PROBLEM | POSSIBLE CAUSE | SOLUTION |
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Engine will not start: | 1. No spark. | 1. | Check spark. Remove spark plug. Reattach |
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| the spark plug cap and lay spark plug on metal |
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| cylinder. Pull the starter rope and watch for |
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| spark at spark plug tip. If there is no spark, |
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| repeat test with a new spark plug. |
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| 2. | No fuel. | 2. | Push primer bulb until bulb is full of fuel. If |
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| bulb does not fill, primary fuel delivery system |
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| is blocked. Contact a service dealer. If primer |
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| bulb fills, engine may be flooded (see next |
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| item). |
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| 3. | Flooded engine. | 3. | Remove spark plug, turn trimmer so spark plug |
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| hole is aimed at the ground. Move choke lever |
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| to “RUN” and pull starter cord 10 to 15 times. |
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| This will clear excess fuel from engine. Clean |
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| and reinstall spark plug. Pull starter three |
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| times with choke lever at “RUN”. If engine |
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| does not start, move choke lever to “CHOKE” |
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| and repeat normal starting procedure. If engine |
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| still fails to start, repeat procedure with a new |
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| spark plug. |
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| 4. | Starter rope pulls harder now than | 4. | Contact a service dealer. |
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| when new. |
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Engine starts but will not | Carburetor requires adjustment. | Turn “L” needle counterclockwise 1/16 turn. If |
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accelerate: |
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| “L” low needle can not be turned counterclock- |
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| wise, do not force plastic limiter caps. Contact a |
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| service dealer. See Figure 20. |
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Engine starts but will only | Carburetor requires adjustment. | Turn “H” needle counterclockwise 1/16 turn. If |
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run at high speed at half |
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| “H” high needle can not be turned counterclock- |
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choke: |
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| wise, do not force plastic limiter caps. Contact a |
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| service dealer. See Figure 20. |
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Engine does not reach full | 1. | Check oil fuel mixture. | 1. | Use fresh fuel and the correct |
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speed and emits excessive | 2. | Air filter dirty. | 2. | Clean the air filter. Refer to “Replacing and |
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smoke: |
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| Cleaning the Air Filter ” earlier in this manual. |
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| 3. | Carburetor requires adjustment. | 3. | Turn “H” needle clockwise 1/16 - 1/8 turn. See |
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| Figure 20. |
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Engine starts, runs, and | Carburetor requires adjustment. | Turn idle speed screw clockwise to increase idle |
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accelerates but will not idle: |
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| speed. |
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String will not advance: | 1. | String welded to itself. | 1. | Lubricate with silicone spray. |
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| 2. | Not enough string on spool. | 2. | Install more string. Refer to “String Replace- |
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| ment” earlier in this manual. |
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| 3. | String worn too short. | 3. | Pull strings while alternately pressing down on |
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| and releasing spool retainer. |
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| 4. | String tangled on spool. | 4. | Remove string from spool and rewind. Refer to |
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| “String Replacement” earlier in this manual. |
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| 5. | Engine speed too slow. | 5. | Advance string at full throttle. |
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16
