Suzuki RV125 Service Manual page 202

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