Suzuki LT-Z50 - Page 184

SERVICING INFORMATION 7-3
NOISY ENGINE
CLUTCH SLIPS
ENGINE IDLES POORLY
Symptom, possible causes and remedy
1) Excessive valve chatter
• Too large valve clearance.
• Weakened or broken valve springs.
• Worn rocker arm or cam surface.
2) Noise seems to come from piston
• Worn down piston or cylinder.
• Combustion chamber fouled with carbon.
• Worn piston pin or piston pin bore.
• Worn piston rings or ring grooves.
3) Noise seems to come from clutch
• Weak clutch shoe spring.
4) Noise seems to come from crankshaft
• Rattling bearings due to wear.
• Worn and burnt journal bearings.
• Too large thrust clearance.
5) Noise seems to come from the movable drive and
driven face
• Worn or slipping drive belt.
• Worn rollers in movable drive face.
Adjust.
Replace.
Replace.
Replace.
Clean.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace bearing retainer.
Replace.
Replace.
Symptom, possible causes and remedy
• Worn or damaged clutch shoe.
• Worn clutch housing.
Replace.
Replace.
Symptom, possible causes and remedy
• Valve clearance out of adjustment.
• Poor seating of valves.
• Defective valve guides.
• Worn down camshaft.
• Worn cylinder.
• Worn piston rings.
• Stiff piston rings.
• Excessive spark plug gap.
• Defective CDI unit.
• Defective ignition coil.
• Defective generator coil.
• Incorrect float chamber fuel level.
• Clogged carburetor jet.
Adjust.
Replace or repair.
Replace.
Replace.
Replace.
Replace.
Replace.
Adjust or replace.
Replace.
Replace.
Replace.
Adjust float height.
Clean.
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