SERVICING
INFORMATION
8-2
Complaint
Symptom
and possible causes Remedy
Dragging clutch
1.
Clutch control
out
of
adjustment
or
too
much play. Adjust.
2.
Some
clutch springs weakened while others are not. Replace.
3. Distorted pressure plate
or
clutch plates.
Replace.
Transmission will
1.
Broken gearshift cam. Replace.
not
shift.
2.
Distorted gearshift forks. Replace.
Transmission will
1.
Broken return spring
on
shift shaft. Replace.
not
shift back.
2.
Shift
shafts are rubbing
or
sticky. Repair
or
replace.
Transmission jumps 1. Worn shifting gears
on
drive shaft
or
countershaft. Replace.
out
of
gear.
2. Distorted or worn gearshift forks. Replace.
3.
Weakened stopper spring
on
gearshift stopper.
Replace.
Engine idles 1.
Spark plug gaps
too
wide.
Adjust.
poorly.
2.
Defective ignition coil. Replace.
3.
Defective
CDI
unit. Replace.
4. Float-chamber fuel level
out
of
adjustment
in
Adjust.
carburetor.
5. Clogged jets. Clean.
Engine runs 1. Spark plug gaps
too
narrow.
Adjust.
poorly
in
2. Clogged jets. Clean.
high-speed range.
3.
Defective ignition coil.
Replace.
4. Defective pick·up coil
or
CDI
unit. Replace.
5.
Float·chamber fuel
level
too
low.
Adjust.
6.
Clogged air cleaner element. Clean.
7.
Clogged fuel pipe, resulting
in
inadequate fuel supply
Clean, and prime.
to
carburetor.
8. Exhaust valve control
out
of
adjustment. Adjust.
9.
Defective exhaust valve control unit, actuator or Replace.
exhaust valve.
Dirty
or
heavy
1.
Oil pump
out
of
adjustment.
Adjust.
exhaust smoke.
2.
Damaged
or
worn crankshaft oil seal.
Replace.
Engine lacks power.
1.
Worn piston rings or cylinder.
Replace.
2. Spark plug gaps incorrect.
Adjust
or
replace.
3. Clogged jets
in
carburetors.
Clean.
4. Float·chamber fuel level
out
of
adjustment. Adjust.
5.
Clogged air cleaner element. Clean.
6. Imbalance
of
the
carburetors. Adjust.
7. Sucking air from intake pipe.
Retighten or replace.
8. Supplying
too
much engine oil. Adjust oil pump.
Engine overheats. 1. Heavy carbon deposit
on
piston crown.
Clean.
2.
Not enough oil supply.
Adjust
oil
pump.
3.
Defective oil pump
or
clogged oil lines.
Replace
or
clean.
4. Fuel
level
too
low
in
float chambers. Adjust.
5. Sucking air from intake pipes.
Retighten or replace.
6. Using incorrect engine oil. Change.
7. Defective cooling system.
See radiator section.
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