Exhaust Valve Inspection; Conrod Inspection - Suzuki RM125 Owner's Service Manual

6-8 CYLINDER, PISTON AND EXHAUST VALVE
• Measure the piston ring free end gap.
 Piston ring free end gap
Service Limit: 3.4 mm (0.13 in)
 09900-20101: Vernier calipers
PISTON-TO-CYLINDER CLEARANCE
As a result of the previous measurement, if the piston to cylinder
clearance exceeds the following limit, replace both cylinder and
piston.
 Piston to cylinder clearance
Service Limit: 0.120 mm (0.0047 in)

EXHAUST VALVE INSPECTION

• Remove carbon deposits from the exhaust main valve 1,
side valves 2 and spacers 3.
• Inspect the exhaust main valve, side valve and spacer for
wear and scratches.
• Inspect the cam groove of the side valve for wear.
• Inspect the return spring 4 for spring tension.

CONROD INSPECTION

• Measure the conrod small end bore.
 Conrod small end bore
Service Limit: 19.040 mm (0.750 in)
 09900-20605: Dial gauge