TROUBLESHOOTING
Problem
Engine will not start.
Engine does not reach
full speed.
Engine does not reach full speed
and/or emits excessive smoke.
Engine starts, runs, and
accelerates but will not idle.
String will not advance
Spool retainer hard to turn
Grass wraps around
driveshaft housing and string
head
Engine emits too much
smoke
English
Possible cause
No spark.
No fuel.
Flooded engine.
Spark arrestor screen is dirty.
Spark plug fouled.
Idle speed screw on carburettor
needs adjustment.
String is welded to itself.
Not enough string on spool.
String is worn too short.
String is tangled on spool.
Engine speed is too slow.
Screw threads are dirty or damaged.
Cutting tall grass at ground level.
Operating trimmer at part throttle.
Too much oil in crankcase.
Solution
Clean or replace spark plug. Reset spark plug gap. Refer
to Spark Plug Replacement earlier in this manual.
Push primer bulb until bulb is full of fuel. If bulb does not
proceed to next item.
Set the start lever to the FULL CHOKE position. Squeeze
the trigger and pull the rope repeatedly until the engine
starts and runs.
require numerous pulls of the rope.
Squeeze and release the throttle trigger 5 times while the
engine is running.
earlier in this manual.
Contact a servicing dealer.
Clean or replace spark plug. Reset spark plug gap. Refer
to Spark Plug Replacement earlier in this manual.
Contact a service dealer for adjustment.
Replace string. Refer to the applicable string replacement
section in this manual.
Install more string. Refer to the applicable string
replacement section in this manual.
Pull strings while alternately pressing down on and
releasing spool retainer.
Remove string from spool and rewind. Refer to the
applicable string replacement section in this manual.
Advance string at full throttle.
Clean threads and lubricate with grease - if no
improvement, replace the spool retainer.
Cut tall grass from the top down to prevent wrapping.
Operate trimmer at full throttle.
engine lubricant. See Adding/Checking Engine Lubricant
in the operation section of this manual.