Yamaha WR450F(S) Owner's Service Manual page 636

REAR SHOCK ABSORBER
2. Tighten:
Adjuster 1
G
3. Adjust:
Spring length (installed) a
G
Standard
245 mm (9.65 in)
* 247 mm (9.72 in)
* For EUROPE, AUS, NZ and ZA
NOTE:
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.
4. Tighten:
Locknut 1
G
Rear shock absorber
1. Install:
Dust seal 1
G
O-ring 2
G
Collar 3
G
NOTE:
Apply the molybdenum disulfide grease on
G
the bearing.
Apply the lithium soap base grease on the
G
dust seals, O-rings and collars.
5 - 66
CHAS
Spring length (installed) a:
length
240.5 ~ 258.5 mm
(9.47 ~ 10.18 in)
New
Extent of
adjustment