VENTO MOTORCYCLES
Rev no.01/ page 81of 84
4. Piston rings or ring grooves worn.
Noise seems to come from crankshaft
1. Worn or burnt crankshaft bearings.
2. Worn or burnt conrod big-end bearings.
3. Due to wear rattling bearings.
4. Too large thrust clearance.
Excessive valve chatter
1. Too large valve clearance
2. Weakened or broken valve springs
3. Worn rocker arm or cam surface
4. Worn and burnt camshaft journal
Noise seems to come from Timing chain
1. Stretched chain.
2. Worn sprocket
3. Chain tensioner not working
Noise seems to come from clutch
1. worn or slipping drive belt
2. Worn rollers in the movable drive face
Noise seems to come from transmission.
1. Gears worn or rubbing.
2. Badly worn splines.
3. Worn or damaged bearing of drive shaft or rear
axle shaft.
Replace.
Replace.
Replace.
Replace.
Replace.
Adjust.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace &repair.
Replace.
Replace.
Replace.
Replace.
Replace.
Slipping clutch 1. Worn or damaged clutch shoes.
2. Worn clutch housing.
3. Weakened clutch shoe springs.
4. Worn or slipping drive belt
Replace.
Replace.
Replace.
Replace.
Engine idles poorly. 1. Excessively worn cylinder or piston rings.
2. Sticky piston rings in grooves.
3. Compression leaks from crankshaft oil seal or
valves.
4. Spark plug gaps too wide.
5. Defective CDI & ignition coil unit.
6. Defective magneto stator coil.
7. Float-chamber fuel level out of adjustment in
carburetor.
8. Clogged jets in carburetor.
9. Worn rocker arm or cam surface
Replace.
Replace or clean.
Replace.
Adjust or replace.
Replace.
Replace.
Replace.
Clean or adjust.
Replace.
Replace.
Complaint Symptom and possible causes Remedy
To Next Page
Loading...