Yamaha WR250FM service manual Tighten Hose guide Clutch cable holder Bolt crankcase

CRANKCASE AND CRANKSHAFT

ENG

6.Tighten:

•Hose guide 1

•Clutch cable holder 2

•Bolt (crankcase) 3

T.

R.

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 New

•Bolt (oil delivery pipe 2) 3

T.

R.

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

T.

R.

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.

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