1985-1986 Honda Fourtrax 125 TRX125 Shop Manual, Page 97Get this manual
CLUTCH OIL PUMP
CLUTCH DI SC INSPECTIO N
Rep lace the clutch discs if they show signs of wear
or iscoloration
Measure the disc thicknessSERVICE LIMIT: 2.5 mm 0.10 in)
CLUTCH DISC
Check for plate and disc warpage on surface plate uSing feeler gauge
SERVICE LIMIT :
DI SC OR PLATE0.20 mm (0.008 in)