Carburetor - Suzuki UY125 Service Manual

CARBURETOR

Complaint
Starting difficulty.
Idling or low-speed
trouble.
Medium or
high-speed trouble.
Overflow and fuel
level fluctuations.
Symptom and possible causes
1. Clogged starter jet.
2. Clogged starter jet passage.
3. Air leaking from joint between starter body and
carburetor.
4. Air leaking from carburetor joint or vacuum hose
joint.
5. Improperly working starter cable.
1. Clogged or loose pilot jet.
2. Clogged or loose pilot air jet.
3. Air leaking from carburetor joint.
4. Clogged pilot outlet port.
5. Clogged bypass port.
6. Starter cable not fully closed.
1. Clogged main jet.
2. Clogged main air jet.
3. Clogged needle jet.
4. Improperly working throttle valve.
5. Clogged fuel filter.
1. Worn or damaged needle valve.
2. Broken needle valve spring.
3. Improperly working float.
4. Foreign matter on the needle valve.
5. Incorrect float chamber fuel level.
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SERVICING INFORMATION
Remedy
Clean.
Clean.
Tighten, adjust, or replace
gasket.
Tighten or replace defective
part.
Adjust.
Clean or tighten.
Clean or tighten.
Tighten or replace defective
part.
Clean.
Clean.
Adjust.
Clean.
Clean.
Clean.
Adjust.
Clean or replace.
Replace.
Replace.
Adjust or replace.
Clean or replace with nee-
dle valve seat.
Adjust float height.
7-5