SERVICING
INFORMATION
8-3
Complaint
Symptom
and
possible
causes
Remedy
Engine
is
noisy
. Excessive valve
chatter
1.
Excessive lappet clearance. Adjust.
2.
Weak or broken valve spring.
Replace.
3.
Worn camshaft.
Replace.
4. Worn or burnt camshaft journal.
Replace.
Noise
seems
to
come
from
the
piston
1. Worn piston. Replace.
2. Worn cylinder. Replace.
3. Carbon buildup in combustion chamber. Clean.
4. Worn piston pin
or
piston pin bore. Replace.
5. Worn piston ring or ring groove. Replace.
Noise
seems
to
come
from
the
cam
chain
1.
Stretched cam chain. Replace cam chain and
sprockets.
2.
Worn
cam chain sprocket. Replace cam chain and
sprockets.
3.
Improperly working cam chain tensioner. Repair
or
replace.
Noise seems
to
come
from
the
clutch
1.
Worn
countershaft spline. Replace countershaft.
2.
Worn
dutch
hub spline. Replace clutch hub.
3.
Worn
clutch plate teeth. Replace clutch plate.
4.
Distorted clutch plate. Replace.
5.
Weak clutch
damper
. Replace primary driven gear.
6.
Weak clutch spring. Replace.
Noise
seems
to
come
from
the
crankshaft
1.
Rattling bearing. Replace.
2. Worn
or
burnt crank pin bearing. Replace.
3. Worn or burnt journal bearing. Replace.
4. Excessive thrust clearance. Replace thrust bearing.
Noise
seems
to
come
from
the
transmission
1.
Worn or rubbing gear. Replace.
2.
Worn countershaft spline. Replace countershaft.
3.
Worn driveshaft spline. Replace driveshaft.
4. Worn or rubbing primary gear. Replace.
5. Worn bearing. Replace.
Clutch
slips
. 1. Clutch cable out
of
adjustment. Adjust.
2. Weak
or
broken clutch spring. Replace.
3. Worn or distorted clutch pressure plate. Replace.
4. Distorted clutch plate. Replace.
Cl
utch
drags.
1. Clutch cable out
of
adjustment. Adjust.
2.
Some
dutch
springs are weak. while others are not. Replace.
3.
Worn
or distorted clutch pressure plate. Replace.
4. Distorted clutch plate. Replace.
Transmission
will
not
1.
Broken gearshift cam. Replace.
shift
. 2. Distorted gearshift fork.
Replace.
3.
Worn
gearshift pawl.
Replace.
4. Clutch cable out
of
adjustment. Adjust.
Transmission
will
not
1.
Broken gearshift shaft return spring. Replace.
shift
back
. 2.
Rubbing
or
stuck gearshift shaft. Repair or replace.
3.
Worn or distorted gearshift fork. Replace.
4. Clutch cable out
of
adjustment. Adjust.
To Next Page
Loading...
