Yamaha YZ250F(W) Owner's Service Manual page 454

CRANKCASE AND CRANKSHAFT
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6. Tighten:
• Hose guide 1
• Clutch cable holder 2
• Bolt (crankcase) 3
12 Nm (1.2 m · kg, 8.7 ft · lb)
NOTE:
Tighten the crankcase tightening bolts in
stage, using a crisscross pattern.
7. Install:
• Oil delivery pipe 2 1
• O-ring 2
• Bolt (oil delivery pipe 2) 3
10 Nm (1.0 m · kg, 7.2 ft · lb)
NOTE:
Apply the lithium soap base grease on the O-
rings.
8. Install:
• Timing chain 1
• Timing chain guide (intake side) 2
• Bolt (timing chain guide) 3
10 Nm (1.0 m · kg, 7.2 ft · lb)
9. Remove:
• Sealant
Forced out on the cylinder mating sur-
face.
10. Apply:
• Engine oil
To the crank pin, bearing and oil delivery
hole.
11. Check:
• Crankshaft and transmission operation.
Unsmooth operation → Repair.
ENG