8-3
SERVICING
INFORMATION
CARBURETOR
Complaint
Symptom
and possible causes
Remedy
Trouble with starting. 1. Starter jet
is
clogged.
Clean.
2. Starter pipe
is
clogged.
Clean.
3. Air leaking from a joint between starter body and
Check and retighten.
carburetor.
4.
Starter plunger
is
not operating properly. Repair.
Idling
or
low-speed
1.
Pilot jet
is
clogged or loose. Check and clean.
trouble.
2. Air leaking from carburetor's S.I.P.C. hose or starter.
Check.
3. Pilot outlet or by-pass
is
clogged. Check and clean.
4.
~tarter
plunger
is
not
fully closed. Check and adjust.
5. I mbalance
of
carburetors. Adjust
the
carburetors.
Medium- or
high~speed
1.
Main jet
is
clogged.
Check and clean.
trouble.
2.
Needle jet
is
clogged. Check and clean.
3.
Throttle
valve
is
not operating properly. Check
throttle
valve for
operation.
4. Filter
is
clogged.
Check and clean.
Overflow and fuel
1.
Needle valve
is
worn or damaged.
Replace.
level fluctuations.
2.
Float
is
not working properly.
Check and adjust.
3.
Foreign matter has adhered
to
needle valve. Clean.
4.
Fuel
level
is
too
high or low.
Adjust float height.
5.
Clogged carburetor air vent pipe.
Clean.
6. Spring
in
needle valve
is
broken.
Replace.
RADIATOR
Complaint Symptom and possible causes
Remedy
Engine overheats.
1. Not enough cooling water. Add.
2.
Radiator core
is
clogged with dirt or trashes.
Clean.
3.
Erratic thermostat, stuck
in
closed position. Replace.
4. Clogged water passage.
Clean.
5. Air trapped
in
the
cooling circuit.
Bleed
out
air.
6. Defective water pump.
Replace.
7.
Incorrect cooling water used.
Change.
Engine overcools.
1.
Erratic thermostat, stuck
in
full-open position.
Replace.
2.
Extremely cold weather.
Put on
the
radiator cover.
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