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Yamaha Motor YZ450F 2003 Manuel D'atelier Du Proprietaire page 424

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CRANKCASE AND CRANKSHAFT
4 - 93
5. Install:
Dowel pin 1
G
O-ring 2
New
G
Crankcase (right)
G
To crankcase (left).
NOTE:
Fit the crankcase (right) onto the crankcase
G
(left). Tap lightly on the case with soft ham-
mer.
When installing the crankcase, the connect-
G
ing rod should be positioned at TDC (top
dead center).
6. Tighten:
Hose guide 1
G
Clutch cable holder 2
G
Bolt (crankcase)
G
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
G
O-ring
New
G
Bolt (oil delivery pipe 2)
G
10 Nm (1.0 m · kg, 7.2 ft · lb)
8. Install:
Timing chain
G
Timing chain guide (rear)
G
Bolt (timing chain guide)
G
10 Nm (1.0 m · kg, 7.2 ft · lb)
9. Remove:
Sealant
G
Forced out on the cylinder mating surface.
10. Apply:
Engine oil
G
To the crank pin, bearing and oil deliv-
ery hole.
11. Check:
Crankshaft and transmission operation.
G
Unsmooth operation → Repair.
ENG

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Yz450fs 2003