Yamaha YZ250 2021 - Clutch Troubleshooting

TROUBLESHOOTING
7-6
EAM30510
TROUBLESHOOTING OF CLUTCH
Manual clutch
Symptom Possible cause Actions
Clutch slippage
Improperly assembled clutch Reassemble the clutch.
Improperly adjusted clutch cable Adjust the clutch lever free play.
Loose clutch spring
Tighten the clutch spring bolts to
the specified torque.
Fatigued clutch spring
Replace the clutch springs as a
set.
Warped pressure plate Replace the pressure plate.
Worn friction plate
Replace the friction plates as a
set.
Warped or worn clutch plate Replace the clutch plates as a set.
Incorrect oil level
Adjust the engine oil level to the
specified level.
Incorrect oil viscosity (low)
Change to recommended engine
oil.
Deteriorated oil
Change to recommended engine
oil.
Clutch drags
Faulty clutch spring
Replace the clutch springs as a
set.
Warped pressure plate Replace the pressure plate.
Swollen friction plate
Replace the friction plates as a
set.
Warped clutch plate Replace the clutch plates as a set.
Bent pull rod (outer pull type) Replace the pull rod.
Worn pull rod tooth (outer pull
type)
Replace the pull rod and pull lever
shaft as a set.
Bent push rod (inner push type) Replace the push rod.
Damaged or worn clutch boss Replace the clutch boss.
Seized clutch housing bushing Replace the clutch housing.
Improperly installed pull lever
Align the match mark on the pull
lever before installation.
Incorrect oil level
Adjust the engine oil level to the
specified level.
Incorrect oil viscosity (high)
Change to recommended engine
oil.
Deteriorated oil
Change to recommended engine
oil.