Yamaha YZ250N Owner's Service Manual page 190

REAR SHOCK ABSORBER SPRING PRELOAD
ADJUSTMENT
EC36M013
REAR SHOCK ABSORBER SPRING
PRELOAD ADJUSTMENT
1. Elevate the rear wheel by placing the suit-
able stand under the engine.
2. Remove:
9Rear frame
3. Loosen:
9Locknut 1
4. Adjust:
9Spring preload
By turning the adjuster 2.
Stiffer Increase the spring preload.
(Turn the adjuster 2 2 in.)
Softer Decrease the spring pre-
load. (Turn the adjuster 2 2
out.)
Spring length (installed) a a :
Standard length
244 mm (9.61 in)
*267 mm (10.51 in)
*For EUROPE
NOTE:
9Be sure to remove all dirt and mud from around
the locknut
adjustment.
9The length of the spring (installed) changes 1.5
mm (0.06 in) per turn of the adjuster.
cC
Never attempt to turn the adjuster beyond
the maximum or minimum setting.
5. Tighten:
9Locknut
6. Install:
9Rear frame
3-30
INSP
ADJ
Extent of adjustment
242~260 mm
(9.53~10.24 in)
*257~275 mm
(10.12~10.83 in)
and adjuster
29 Nm (2.9 m•kg, 21 ft•lb)
before