Yamaha YFM250RX 2008 Service Manual page 187

CRANKCASE
4. Install:
• Crankcase bolts M6 × 70 mm
• Copper washers to
• Crankcase bolts M6 × 60 mm
• Crankcase bolts M6 × 55 mm
• Crankcase bolts M6 × 45 mm
5. Tighten:
• Crankcase bolts
Crankcase bolt
10 Nm (1.0 m•kg, 7.4 ft•lb)
NOTE: NOTE:
Tighten each bolt 1/4 of a turn at a time, in
stages and in a crisscross pattern.
6. Install:
• Neutral switch
7. Install:
• Crankshaft sprocket
• Timing chain guide (intake side)
• Timing chain
8. Tighten:
• Timing chain guide (intake side) bolt
Timing chain guide (intake side)
bolt
8 Nm (0.8 m•kg, 5.9 ft•lb)
LOCTITE
9. Apply:
• Engine oil
(onto the crankshaft pins bearings and oil
delivery holes)
10.Check:
• Crankshaft and transmission operation
Rough movement → Repair.
4-71
ENG
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