Exhaust Valve Inspection - Suzuki RM85 Owner's Service Manual

• Fit the piston ring into the cylinder and measure the piston
ring end gap with a thickness gauge.
 Piston ring end gap
Service Limit: 0.80 mm (0.031 in)
• Measure the piston ring free end gap.
 Piston ring free end gap
Service Limit: 3.2 mm (0.13 in)

EXHAUST VALVE INSPECTION

• Remove carbon deposits from the exhaust valve and valve
guide.
• Inspect the exhaust valve and valve guide for wear and
scratches.
• Inspect the exhaust valve shaft and arm for damage.
• Inspect the exhaust valve breather hoses for clogging with tar.
If clogging is found, clean up it.
NOTE:
Using several brands of engine oil may cause tar to drip from the
breather hoses.
CYLINDER, PISTON AND EXHAUST VALVE 6-7