Yamaha YZ125 2009 Owner's Service Manual page 182

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28.Inspect:
• Gap "a" between the adjuster "1" and lock-
nut "2".
Out of specification → Retighten and read-
just the locknut.
Gap "a" between the adjuster and
locknut:
0.5–1.0 mm (0.02–0.04 in)
If the adjuster is installed out of specification,
proper damping force cannot be obtained.
29.Tighten:
• Adjuster (locknut) "1"
Adjuster (locknut):
29 Nm (2.9 m•kg, 21 ft•lb)
Hold the locknut "2" and tighten the adjuster
with specified torque.
30.Install:
• Adjuster "1"
Adjuster:
55 Nm (5.5 m•kg, 40 ft•lb)
To inner tube.
31.Fill:
• Front fork oil "1"
From outer tube top.
Recommended oil:
Suspension oil "S1"
Standard oil amount:
3
333 cm
oz)
*335 cm
oz)
Extent of adjustment:
300–375 cm
10.1–12.7 US oz)
* For EUROPE
Never fail to make the oil amount adjust-
ment between the maximum and minimum
amount and always adjust each front fork to
the same setting. Uneven adjustment can
cause poor handling and loss of stability.
• Be sure to use recommended fork oil. If
other oils are used, they may have an ex-
cessively adverse effect on the front fork
performance.
• Never allow foreign materials to enter the
front fork.
5-33
FRONT FORK
(11.72 Imp oz, 11.26 US
3
(11.79 Imp oz, 11.33 US
3
(10.6–13.2 Imp oz,

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