Problem Possible Cause Solution
Engine will not start
No spark
Check spark. Remove spark plug. Reattach the spark plug
cap and lay spark plug on metal cylinder. Pull the starter rope
and watch for spark at spark plug tip. If there is no spark,
repeat test with a new spark plug.
No fuel
Push primer bulb until bulb is full of fuel. If bulb does not fill,
primary fuel delivery system is blocked. Contact a servicing
dealer. If primer bulb fills, engine may be flooded, proceed
to next item.
Engine is flooded
Set the choke lever to the FULL CHOKE position. Squeeze the
trigger and pull the rope repeatedly until the engine starts
and runs.
NOTE: Depending on the severity of the flooding, this may
require numerous pulls of the rope.
Engine does not reach full
speed and emits excessive
smoke
Air filter is dirty
Clean air filter. Refer to “Cleaning the Air Filter”
earlier in this manual.
Spark arrestor screen is dirty Contact a servicing dealer.
Spark plug fouled
Clean or replace spark plug. Reset spark plug gap. Refer to
“Spark Plug” section earlier in this manual.
Engine starts, runs, and
accelerates but will not idle.
Idle speed screw on carburettor
needs adjustment.
Turn idle speed screw clockwise to increase idle speed.
Engine emits too much
smoke.
Too much oil in crankcase.
Drain oil and refill with correct amount of 10W30 engine
lubricant. See “Adding/Checking Engine Oil” in the Operation
section of this manual.
Line will not advance.
Line welded to itself. Lubricate with silicone spray.
Not enough line on spool Install a new spool
Line is worn too short.
Pull lines while alternately pressing down on and releasing
spool retainer.
Line is tangled on spool. Remove line from spool and rewind.
Engine speed is too slow Advance line at full throttle.
Spool retainer hard to turn.
Screw threads are dirty or
damaged
Clean threads and lubricate with grease - if no improvement,
replace the spool retainer.
Grass wraps around
driveshaft housing and string
head.
Cutting tall grass at ground level. Cut tall grass from the top down to prevent wrapping.
Operating trimmer at part throttle Operate trimmer at full throttle.
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