Suzuki RM85, Owner'S Service Manual

Page: 77 / 206

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.
EX