Suzuki DF 25 Service Manual page 174

CRANKSHAFT TO CYLINDER
Install crankshaft main bearing in cylinder and crankcase.
Apply engine oil to bearings.
• Assemble each bearing to its original position.
• Do not apply oil between crank bearing holder and
crank main bearing.
NOTE:
Align bearing tab a with notch in cylinder and crankcase.
Thrust bearing
Apply engine oil to bearing and install in cylinder block between
the No.2 and No.3 cylinders.
Oil groove sides of thrust bearing must face towards crank webs.
Crankshaft
Apply engine oil to upper oil seal lip.
Install upper oil seal to crankshaft.
Do not re-user seal removed. Be sure to use new seal.
NOTE:
Install upper oil seal with its spring/lipped side facing inward.
Apply engine oil to crank pin and crankshaft main journal and
install crankshaft in cylinder.
NOTE:
When installing crankshaft to cylinder, be sure to fit tab of seal
in groove of cylinder.
POWER UNIT 7-57
1
2
1. Thrust bearing
2. Oil groove