Suzuki DF 90 Service Manual page 205

6-60 POWER UNIT
CRANKSHAFT TO CYLINDER
1. Install crankshaft main bearings in cylinder and crankcase.
2. Apply engine oil to bearings.
• Assemble each bearing to its original position.
• Assemble main bearing half containing oil groove /
hole to cylinder block.
Assemble the half without oil groove to crankcase.
• 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 thrust bearing and install in cylinder block
between the No.3 and No.4 cylinders.
Oil groove sides of thrust bearing should face towards crank
webs.
Crankshaft
1. Apply engine oil to upper oil seal lip.
2. Install upper oil seal to crankshaft.
Do not re-use oil seal once removed. Always use a new
oil seal.
NOTE:
Install upper oil seal with its spring / lipped side facing inward.
3. 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.
Oil hole / groove Oil hole / groo Oil hole / g roove
1. Thrust bearing
2. Oil groove
1. Oil seal 1. Oil seal Oil seal
1
2
1 1