KEEWAY RKV125 Instruction And Maintenance Manual page 147

14.3.2 Disassemble Clutch
14.3.3 Inspection
Check if there are burs or broken parts on the housing groove
of clutch. If there are, fix and adjust with a file.
If there is a lot for fix and adjustment, replace it.
Check if teeth of pressure plate and center bracket are injured.
If they are, replace them.
Measure the free length of pressure spring.
Allowable limit: replace it if it is below 29.7mm.
Free Length