Installation; Piston And Piston Ring - Suzuki RM250 Owner's Service Manual

6-10 CYLINDER, PISTON AND EXHAUST VALVE

INSTALLATION

PISTON AND PISTON RING

Install the piston and piston ring in the reverse order of removal.
Pay attention to the following points:
• Apply engine oil to the piston rings and piston ring grooves.
• Fit the piston rings into the piston ring grooves so that the
each piston ring end comes to the piston ring locating pin.
Locate the piston ring end to the locating pin and
insert the piston into the cylinder.
If the piston ring end is not at the proper position, you
can not insert the piston into the cylinder properly and
the piston ring will be damaged.
• Apply engine oil to the piston pin and bearing.
• Fit the bearing to the conrod small end.
• Face the embossed mark A on the piston top to the exhaust
port side.
• Install the piston pin and new piston pin circlips.
NOTE:
* Place cloth under the piston to prevent the piston pin circlip
from dropping into the crankcase chamber.
* Piston pin circlip ends should face upside.
CAUTION
OK NG