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Yamaha WR450F Manuel D'atelier Du Proprietaire page 258

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REAR SHOCK ABSORBER SPRING PRELOAD
ADJUSTMENT
REAR SHOCK ABSORBER SPRING
PRELOAD ADJUSTMENT
1. Elevate the rear wheel by placing the suit-
able stand under the engine.
2. Remove:
• Rear frame
3. Loosen:
• Locknut 1
4. Adjust:
• Spring preload
By turning the adjuster 2.
Stiffer → Increase the spring preload.
(Turn the adjuster 2 in.)
Softer → Decrease the spring preload.
(Turn the adjuster 2 out.)
Spring length (installed) a:
Standard length
248 mm (9.76 in)
* 253 mm (9.96 in)
** 247 mm (9.72 in)
* For EUROPE
** For AUS, NZ and ZA
NOTE:
• Be sure to remove all dirt and mud from
around the locknut and adjuster before
adjustment.
• The length of the spring (installed) changes
1.5 mm (0.06 in) per turn of the adjuster.
CAUTION:
Never attempt to turn the adjuster beyond
the maximum or minimum setting.
5. Tighten:
• Locknut
6. Install:
• Rear frame (upper)
• Rear frame (lower)
3 - 39
INSP
ADJ
Extent of adjustment
237.5 ~ 258.5 mm
(9.35 ~ 10.18 in)
32 Nm (3.2 m · kg, 23 ft · lb)
29 Nm (2.9 m · kg, 21 ft · lb)

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Wr450ft