Yamaha YZ125 2009 Owner's Service Manual page 144

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(1.77 1.97 in)
(0.98 1.50 in)
A. For USA and CDN
B. Except for USA and CDN
6. Install:
• Clamp "1"
• Bolt (crankcase) "2"
Bolt (crankcase):
14 Nm (1.4 m•kg, 10 ft•lb)
Tighten the crankcase tightening bolts in stage,
using a crisscross pattern.
7. Install:
• Holder "1"
• Bolt (holder) "2"
Bolt (holder):
10 Nm (1.0 m•kg, 7.2 ft•lb)
8. Install:
• Segment "1"
• Bolt (segment) "2"
Bolt (segment):
30 Nm (3.0 m•kg, 22 ft•lb)
CRANKCASE AND CRANKSHAFT
• When installing the segment onto the shift
• Turn the segment clockwise until it stops and
If the segment gets an impact, it may be
(0.16 0.20 in)
damaged. Take care not to give an impact to
the segment when tightening the bolt.
9. Remove:
10.Apply:
11.Check:
If the crankshaft will not turn smoothly, make an
adjustment by gently tapping its right end with
a soft hammer.
4-61
cam "3", align the punch mark "a" with the
dowel pin "b".
tighten the bolt.
• Sealant
Forced out on the cylinder mating surface.
• Engine oil
To the crank pin, bearing, oil delivery hole
and connecting rod big end washer.
• Crankshaft and transmission operation.
Unsmooth operation → Repair.

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