Dragging Clutch; Overheating - Yamaha ttr230 Service Manual

DRAGGING CLUTCH

Clutch
Engine oil

OVERHEATING

OVERHEATING
Ignition system
Fuel system
Compression system
Engine oil
Brake
OVERHEATING
POSSIBLE CAUSE
• Bent pressure plate
• Improper tension on clutch springs
• Loose clutch hub nut
• Burnt sleeve bushing
• Bent separator
• Too thick friction disc
• Broken clutch hub
• High oil level
• High viscosity oil
• Deteriorated oil
POSSIBLE CAUSE
• Improper electrode clearance
• Wrong spark plug thermal grade
• Defective C.D.I. unit
• Wrong high-speed adjusting nozzle
• Improper fuel level
• Clogged air filter element
• Excessive carbonization
• Improper oil level
• Improper oil viscosity
• Low quality oil
• Locked brake
8-5
PROB