Conrod Inspection; Piston Ring And Piston Reassembly; Exhaust Valve Reassembly - Suzuki RM85 Owner's Service Manual

6-8 CYLINDER, PISTON AND EXHAUST VALVE

CONROD INSPECTION

• Measure the conrod small end bore.
 Conrod small end bore
Service Limit: 18.040 mm (0.7102 in)
 09900-20605: Dial gauge
• Fit the piston pin and bearing into the conrod small end and
check the play.

PISTON RING AND PISTON REASSEMBLY

• Apply engine oil to the piston ring and piston ring groove.
• Install the piston ring into the piston ring groove so the piston
ring end comes to the piston ring locating pin.
• Apply engine oil to the piston pin and bearing.
• Install the bearing to the conrod small end.
• Face the depression on the piston top to the exhaust port side
and install the piston 1.
• Install the piston pin 2 and piston pin circlips 3. End gap of
the circlip should not be aligned with the cutaway in the piston
pin bore.
NOTE:
* Replace the piston pin circlip with a new one.
* Place cloth on the crankcase to prevent piston pin circlip from
dropping into the crankcase chamber.

EXHAUST VALVE REASSEMBLY

• Apply engine oil to the exhaust valves.
• Assemble the exhaust valves and the exhaust valve retainer.
• Install the exhaust valves into the cylinder.
• Tighten the exhaust valve retainer bolts.
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