Suzuki GN125F Service Manual page 53

Remove the clutch drive plates and driven plates.
Flatten the lock washer..
Hold the clutch hub with the special tool, remove the clutch
hub nut and lock washer.
09920-53710: Clutch sleeve hub holder
Remove the clutch hub and washer.
Remove the primary driven gear, spacer and washer.
INSPECTION
Measure the thickness and claw width of each drive plate
with vernier calipers. Replace the drive plates found to have
worn down to the limit.
09900-20103: Vernier calipers
Drive plate thickness limit: 2.6 mm
ENGINE
3-22
Checking thickness