(4) Driving system
¡¤Claw of gear end is worn
(V) Clutch slips
(1) Clutch
¡¤Improper adjustment of clamp plate release
rod clearance of clutch
¡¤Clutch spring is loosen (primary clutch and
/ secondary clutch)
¡¤Clutch spring is fatigue (primary clutch and/
secondary clutch )
¡¤Friction disc is worn
¡¤Clamp plate is worn or deformed
¡¤Main clutch shoe lining is worn
(2)Engine oil
¡¤Low oil level
¡¤Poor quality(viscosity is low)
¡¤Deteriorated oil
(VI) clutch is locked
¡¤(1)Clutch
¡¤Clutch is out of control or the clearance is
too big
¡¤Improper match between release lever and
release rod
¡¤Deformed clutch clamp plate
¡¤Friction disc is deformed
¡¤Clutch hub is broken
(2)Engine oil
¡¤High oil level
¡¤Poor oil quality(viscosity is high)
¡¤Deteriorated oil
(VII) Engine is overheat
(1)Ignition system
¡¤Improper spark plug clearance
¡¤Wrong spark plug heating value
¡¤CDI failure
(2) Fuel system
¡¤Main jet of carburetor is wrong
¡¤Improper oil level
¡¤Core of air filter is clogged
(3) Cylinder system
¡¤Serious carbon deposition
(4)Engine oil
¡¤Improper oil level
¡¤Improper oil toughness
¡¤Poor oil quality
(5)Brake
¡¤Brake is stagnant
(VIII) Brake trouble
Troubles: Poor brake efficient
¡¤Brake shoe lining is worn
¡¤Serious wear of brake shoe
¡¤Brake shoe oil is too much
¡¤Improper adjustment of brake clearance
¡¤Improper brake arm position
¡¤Returning spring is fatigue and damaged
¡¤Brake cable is broken
(IX) Shock absorber failure/improper opera-
tion
1. Shock absorber failure:
¡¤Damping rod is bent or damaged
¡¤Bad oil sealing lip
¡¤
Spring of shock absorber is fatigue
2. Improper operation
(1) Handle bar
¡¤Improper installation or handlebar is bent
(2) Steering system
¡¤Wrong toe-in
¡¤Steering pillar is bend
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