7-5 SERVICING INFORMATION
CLUTCH
CARBURETOR
Complaint
Symptom and possible causes
Remedy
Slipping
clutch.
First clutch
1. Excessively worn clutch shoes.
Replace.
Gear shifting
clutch
1. Clutch out of adjustment.
2. Excessively worn clutch plates.
Adjust.
Replace.
Dragging
clutch.
First clutch
1. Erratic clutch weight movement.
Replace.
Gear shifting
clutch
1. Too heavy oil.
2. Clutch out of adjustment.
Replace with proper gear
oil.
Adjust.
Complaint
Symptom and possible causes
Remedy
Starting difficulty.
1. Clogged starter jet.
2. Clogged starter jet passage.
3. Air leaking from joint between starter plunger and
carburetor.
4. Air leaking from carburetor joint or vacuum hose
joint.
5. Improperly working starter plunger.
Clean.
Clean.
Tighten, adjust, or replace
the gasket.
Tighten or replace defec-
tive part.
Adjust.
Idling or low-speed
trouble.
1. Clogged or loose pilot jet.
2. Air leaking from carburetor joint.
3. Clogged pilot outlet port.
4. Clogged bypass port.
5. Starter plunger not fully closed.
Clean or tighten.
Tighten or replace defec-
tive part.
Clean.
Clean.
Adjust.
Medium or
high-speed trouble.
1. Clogged main jet.
2. Clogged needle jet.
3. Improperly working throttle valve.
4. Clogged fuel filter.
Clean.
Clean.
Adjust.
Clean or replace.
Overflow and fuel
level fluctuations.
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.
Replace.
Replace.
Adjust or replace.
Clean or replace the needle
valve seat.
Adjust float height.