Cylinder Reassembling - Suzuki RM250 Owner's Service Manual

CYLINDER REASSEMBLING
• Fit the new gasket. Fit the dowel pins.
• Fit the exhaust valve breather hose to the cylinder.
• Move t he piston to the top dead center.
• Apply engine oil to the cyl ind er bore .
• Hold the piston and piston ring , and insert the piston into
the cyl inder.
.. CAUTION
If the piston pin end is not at the proper position. you can
not insert the piston into the cylinder properly and the
piston ring will be damaged .
Locate the piston ring end to the locating pin and inse rt
the piston into the c ylinder.
• Tighten the cylinder nuts t o the specified torque accord-
ing to the specified tightening order as shown.
Tightening torque : 38 N' m (3 .8 kg -m. 27 .5 Ib -fU
• Fit the exhaust valve rod .
• Install the space r, spring, exhaust valve ca p and retainer .
• Tighten the screws temporarily.
• Turn the exhaust valve cap clockwise one turn .
• Tighten the screws.
• Inspect the exhaust valves for smooth movement.
• Install the new O-rin gs.
• Install the cylinder head .
NOTE: Apply Bond "1207B" to the stud bolt threads when
assembling the removed stud bolts into the cylinder.
CYLINDER, PISTON AND EXHAUST VALVE 6·)
o
OK NG
~------'O
0 ,
30
Xi
4 2
°
0