16
Problem Possible Cause Solution
Engine will not start.
[Make sure ignition
switch is in the RUN
( l ) position.]
No spark.
Engine is fl ooded.
Check spark. Remove air fi lter cover. Remove spark plug from
cylinder. Reattach the spark plug wire and lay spark plug on top
of cylinder with the metal part of plug touching the cylinder. Pull
the starter grip and watch for spark at spark plug tip. If there is no
spark, repeat test with a new spark plug.
With the ignition switch OFF, remove spark plug. Move choke
knob to RUN position (pushed in completely) and pull starter grip
15 to 20 times. This will clear excess fuel from engine. Clean and
reinstall spark plug. Set ignition switch to RUN ( l ) position. Push
and fully release primer bulb 4 times. Pull starter three times with
choke knob at RUN. If engine does not start, move choke knob to
HALF CHOKE and repeat normal starting procedure. If engine still
fails to start, repeat procedure with a new spark plug.
Engine starts but
will not accelerate
properly.
Carburetor requires “L”
(Low Jet) adjustment.
Contact an authorized service center for carburetor adjustment.
Engine starts, then
dies.
Carburetor requires “L”
(Low Jet) adjustment.
Contact an authorized service center for carburetor adjustment.
Engine starts but will
not run properly at
high speed.
Carburetor requires “H”
(High Jet) adjustment.
Contact an authorized service center for carburetor adjustment.
Engine does not reach
full speed and/or emits
excessive smoke.
Oil/fuel mixture incorrect.
Air fi lter is dirty.
Spark arrestor screen is
dirty.
Carburetor requires “H”
(High Jet) adjustment.
Use fresh fuel and the correct 2-stroke oil mix ratio.
Clean air fi lter. Refer to Cleaning the Air Cleaner in the
Maintenance section of this manual.
Clean spark arrestor screen. Refer to Cleaning the Spark
Arresting Screen in the Maintenance section of this manual.
Contact an authorized service center for carburetor adjustment.
Engine starts, runs,
and accelerates but
will not idle.
Chain turns at idle.
Carburetor requires
adjustment to idle speed.
Carburetor requires
adjustment to idle speed.
Air leak in the intake
system.
Turn idle speed screw “T” clockwise to increase idle speed.
Refer to Adjusting the Carburetor in the Maintenance section
of this manual.
Turn idle speed screw “T” counterclockwise to decrease speed.
Refer to Adjusting the Carburetor in the Maintenance section
of this manual.
Contact an authorized service center for a rebuild kit.
TROUBLESHOOTING
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