Suzuki VL125 Service Manual

SERVICING INFORMATION 9-3
Complaint Symptom and possible causes Remedy
Engine is noisy. Excessive valve chatter
1. Excessive valve clearance.
2. Weak or broken valve spring.
3. Worn camshaft.
4. Worn or burnt camshaft journal.
Noise seems to come from the piston
1. Worn piston.
2. Worn cylinder.
3. Carbon buildup in combustion chamber.
4. Worn piston pin or piston pin bore.
5. Worn piston ring or ring groove.
Noise seems to come from the cam chain
1. Stretched cam chain.
2. Worn cam chain sprocket.
3. Improperly working cam chain tensioner.
Noise seems to come from the clutch
1. Worn countershaft spline.
2. Worn clutch hub spline.
3. Worn clutch plate teeth.
4. Distorted clutch plate.
5. Weak clutch damper.
6. Weak clutch spring.
Noise seems to come from the crankshaft
1. Rattling bearing.
2. Worn or burnt crank pin bearing.
3. Worn or burnt journal bearing.
4. Excessive thrust clearance.
Noise seems to come from the transmission
1. Worn or rubbing gear.
2. Worn countershaft spline.
3. Worn driveshaft spline.
4. Worn or rubbing primary gear.
5. Worn bearing.
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 thrust bearing.
Replace.
Replace countershaft.
Replace driveshaft.
Replace.
Replace.
Clutch drags. 1. Clutch out of adjustment.
2. Clutch release screw out of adjustment.
3. Some clutch springs are weak, while others are not.
4. Worn or distorted clutch pressure plate.
5. Distorted clutch plate.
Adjust.
Adjust.
Replace.
Replace.
Replace.
Transmission will not
shift.
1. Broken gearshift cam.
2. Distorted gearshift fork.
3. Worn gearshift pawl.
Replace.
Replace.
Replace.
Transmission will not
shift back.
1. Broken gearshift shaft return spring.
2. Rubbing or stuck gearshift shaft.
3. Worn or distorted gearshift fork.
Replace.
Repair or replace.
Replace.

Suzuki VL125 Specifications

General

Displacement	124 cc
Ignition	Electronic ignition (CDI)
Starter	Electric
Transmission	5-speed constant mesh
Final Drive	Chain
Front Suspension	Telescopic, coil spring, oil damped
Rear Suspension	Swingarm, coil spring, oil damped
Rear Brake	Drum
Overall Length	2, 080 mm
Overall Width	760 mm
Ground Clearance	150 mm
Fuel System	Carburetor
Front Brake	Single disc
Front Tire	90/90-18
Seat Height	735mm