CARBURETOR
Complaint
Symptom and possible causes
Remedy
Trouble with
starting.
1. Starter jet is clogged.
2. Starter pipe is clogged.
3. Air leaking from a joint between starter body and
carburetor.
4. Air leaking from carburetor
＇
s joint or vacuum hose
joint.
5. Starter plunger is not operating properly.
Clean.
Clean.
Check starter body and
cayburetor for tightness and
replace gasket.
Check and replace.
Check and replace.
Ldling or
low-speed
trouble.
1. Pilot jet,pilot air jet are clogged or loose.
2. Air leaking from carburetor
＇
s joint,vacuum pipe
joint,or starter.
3. Pilot outlet is clogged.
4. Starter plunger is not fully closed.
Check and clean.
Check and replace.
Check and clean.
Check and replace.
Medium-or
highspeed
trouble.
1. Main jet or main air jet is clogged.
2. Needle jet is clogged.
3. Fuel level is improperly set.
4. Throttle valve is not operating properly.
5. Fuel filter is clogged.
Check and clean.
Check and clean.
Adjust.
Check throttle valve for
operation.
Check and clean.
Overflow and fuel
level fluctuations.
1. Needle valve is worn or damaged.
2. Spring in needle valve is broken.
3. Float is not working properly.
4. Foreign matter has adhered to needle valve.
5. Fuel level is too high or low.
Replace.
Replace.
Check and Adjust.
Clean.
Adjust float height.
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