Homelite UT20933 - Manual (Page 17)

Page 17
STOP OP
1
2
3
PROBLEM POSSIBLE CAUSE SOLUTION
Fig. 22
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
22.
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
shaft housing and
stringhead:
Spool retainer hard to
turn:
Oil drips from muffler:
TROUBLESHOOTING
MIXTURE
NEEDLE
IDLE SPEED
SCREW
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.