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PROBLEM POSSIBLE CAUSE SOLUTION
Fig. 18
1. Cut tall grass from the top down.
2. Operate trimmer at full throttle.
Clean threads and lubricate with grease - if no improve-
ment, replace spool retainer.
1. Operate trimmer at full throttle.
2. Use fresh fuel and the correct 2-cycle oil mix.
3. Clean air filter. Refer to “Replacing and Cleaning Air
Filter” earlier in this manual.
4. Turn mixture needle clockwise 1/16 turn.
See Figure
18.
1. Cutting tall grass at ground
level.
2. Operating trimmer at part
throttle.
Screw threads dirty or damaged.
1. Operating trimmer at part
throttle
2. Check oil/fuel mixture.
3. Air filter dirty.
4. Carburetor requires adjust-
ment.
Grass wraps around
driveshaft housing and
stringhead:
Spool retainer hard to
turn:
Oil drips from muffler:
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.
TROUBLESHOOTING
MIXTURE
NEEDLE
IDLE SPEED
SCREW