Yamaha YZ125 2009 Owner's Service Manual page 36

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CHASSIS
Item
Steering system:
Steering bearing type
Front suspension:
Front fork travel
Fork spring free length
Spring rate, STD
Optional spring
Oil capacity
Oil grade
Inner tube outer diameter
Front fork top end
Rear suspension:
Shock absorber travel
Spring free length
Fitting length*
I.D. mark (Red/1)
I.D. mark (Red/2)
I.D. mark (Red/3)
Preload length
<Min.–Max>
Spring rate, STD
Optional spring
Enclosed gas pressure
* Spring specification varies according to
the difference in the production lot.
Swingarm:
Swingarm free play limit
End
Side clearance
MAINTENANCE SPECIFICATIONS
Standard
Taper roller bearing
USA, CDN, ZA,
AUS, NZ
300 mm (11.8 in)
454 mm (17.9 in)
K=4.1 N/mm (0.418
kg/mm, 23.4 lb/in)
Yes
3
524 cm
(18.4 Imp
526 cm
oz, 17.7 US oz)
oz, 17.8 US oz)
Suspension oil "S1" ←
48 mm (1.89 in)
5 mm (0.2 in)
USA, CDN, ZA,
AUS, NZ
131.5 mm (5.18 in) ←
Approx.265 mm
(10.43 in)
258 mm (10.16 in)
252 mm (9.92 in)
264 mm (10.39 in)
258 mm (10.16 in)
255.5 mm (10.06
249.5 mm (9.82 in) ----
in)
1.5–13 mm (0.06–
0.51 in)
K=46.0 N/mm (4.70
kg/mm, 263.2 lb/in)
Yes
1,000 kPa (10 kg/
2
cm
, 142 psi)
----
----
2-6
Limit
----
EUROPE
----
449 mm
(17.7 in)
----
----
3
(18.5 Imp
----
----
----
----
EUROPE
----
----
----
----
----
----
----
----
----
1.0 mm
(0.04 in)
0.2–0.9 mm
(0.008–
0.035 in)

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