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TROUBLESHOOTING
CAUSEPROBLEM
Does not start
Loss of power
1. Dirty air filter.
2. Out of fuel.
3. Stale fuel.
4. Water in fuel.
5. Spark plug wire is
disconnected.
6. Bad spark plug.
7. Throttle control lever not
in correct position
(if equipped).
1. Dirty air filter.
2. Buildup of grass, leaves,
and trash under trimmer.
3. Too much oil in engine.
4. Walking speed too fast.
CORRECTION
1. Clean/replace air filter.
2. Fill fuel tank.
3. Drain tank and refill with
fresh clean fuel.
4. Drain fuel tank and
carburetor and refill tank
with fresh gasoline.
5. Connect wire to plug.
6. Replace spark plug.
7. Move throttle lever to FAST
position.
1. Clean/replace air filter.
2. Clean underside of trimmer
and trimmer head.
3. Check oil level.
4. Trim at slower walking
speed.
Excessive 1. Lines uneven or broken. 1. Check trimmer lines.
Vibration 2. Loose nuts or bolts. 2. Check all hardware,
including engine bolts.
3. Damaged trimmer head. 3. Check/repair trimmer head.
Starter rope hard 1. Bent engine crankshaft. 1. Contact a Sears or other
topull qualified service center.
Loss of head 1. Belt not driving. 1. Put belt on pulleys or
drive replace belt if broken.
Hard to push 1. Handle height position not 1. Adjust handle height
right for you. to suit.
Poor trimming 1. Trimmer line length is
performance too short.
Trimmer head
does not
retain line
2. Throttle control lever not
in correct position
(if equipped).
1. Trimmer line not
properly installed.
2. Broken line retainer clip.
3. Incorrect size of
trimmer line.
1. If line is worn or broken to
half original length,
replace line.
2. Move throttle lever to FAST
position.
1. Follow instructions in
Maintenance section.
2. Replace string carrier plate
assembly.
3. Use .155 diameter
trimmer line.
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