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. | |
driveshaft 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. |
| 18. |
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NOTE: This engine complies with EPA (Environmental Protec- tion Agency) and CARB (California Air Resource Board) regulations 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 adjustment. 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
Fig. 18
Page 15
