- Clutch boss splines. Damage/pitting/wear → Replace the clutch boss.
Note: Pitting on the clutch boss splines will cause erratic clutch operation.
Checking the clutch boss (Yamaha FZ1)
1. Check:
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Checking the clutch housing
Checking the clutch springs
Checking the clutch plates
Checking the clutch friction plates
Removing the clutch
Removing the pull lever shaft
Removing the clutch cover
Checking the clutch springs
Checking the clutch plates
Checking the clutch friction plates
Removing the clutch
Removing the pull lever shaft
Removing the clutch cover
Checking the clutch pressure plate
Checking clutch pull lever shaft and pull rod
Installing the clutch
Removing the shift shaft and stopper lever
Checking the shift shaft
Checking the stopper lever
Installing the shift shaft
Removing the transmission, shift drum assembly, and shift forks
Disassembling the main axle assembly
Disassembling the drive axle assembly
Checking clutch pull lever shaft and pull rod
Installing the clutch
Removing the shift shaft and stopper lever
Checking the shift shaft
Checking the stopper lever
Installing the shift shaft
Removing the transmission, shift drum assembly, and shift forks
Disassembling the main axle assembly
Disassembling the drive axle assembly
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