TROUBLESHOOTING
| PROBLEM |
| POSSIBLE CAUSE |
| SOLUTION |
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Grass wraps around | 1. | Cutting tall grass at ground | 1. | Cut tall grass from the top down. | |
shaft housing and |
| level. |
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stringhead: | 2. | Operating trimmer at part | 2. | Operate trimmer at full throttle. | |
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| throttle. |
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Spool retainer hard to | Screw threads dirty or damaged. | Clean threads and lubricate with grease - if no improve- | |||
turn: |
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| ment, replace spool retainer. | ||
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Oil drips from muffler: | 1. | Operating trimmer at part | 1. | Operate trimmer at full throttle. | |
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| throttle |
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| 2. | Check oil/fuel mixture. | 2. | Use fresh fuel and the correct |
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| 3. | Air filter dirty. | 3. | Clean air filter. Refer to “Replacing and Cleaning Air |
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| Filter” earlier in this manual. |
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| 4. | Carburetor requires adjust- | 4. | Turn mixture needle clockwise 1/16 turn. See Figure |
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| ment. |
| 22. |
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NOTE: This engine complies with EPA (Environmental Protec- tion Agency) and CARB (California Air Resource Board) regu- lations which require exhaust emission control. As a result, the carburetor adjustment needle(s) are equipped with plastic cap(s) that limit the rotation from the original factory adjust- ment. If your unit exhibits specific performance problem(s) where the Trouble Shooting Section recommends a needle adjustment and you are at the limit of adjustment, the unit should be taken to a factory authorized service dealer for repair.
IDLE SPEED
SCREW
3 
2 
1
MIXTURE
NEEDLE
STOP
Fig. 22
Page 17
