Yamaha YFM250R-W Owner's Manual page 36

3
(b)
4
1. Locknut
2. Spring preload adjusting nut
3. Distance A
TIP
G A special wrench can be obtained at a Yamaha
dealer to make this adjustment.
G
The spring preload setting is determined by
measuring distance A, shown in the illustration.
The shorter distance A is, the higher the spring
preload; the longer distance A is, the lower the
spring preload. With each complete turn of the
adjusting nut, distance A is changed by 1.0 mm
(0.04 in).
(a)
2
1
Spring preload setting:
Minimum (soft):
Distance A = 234.0 mm (9.21 in)
Standard:
Distance A = 230.0 mm (9.06 in)
Maximum (hard):
Distance A = 222.0 mm (8.74 in)
3. Tighten the locknut to the specified torque.
NOTICE: Always tighten the locknut
against the adjusting nut, and then tighten
it to the specified torque.
Tightening torque:
Locknut:
42 Nm (4.2 m·kgf, 30 ft·lbf)
EWB00450
WARNING
This shock absorber assembly contains highly
pressurized nitrogen gas. If the shock absorb-
er assembly is damaged, it could explode
causing injury or property damage. Shock ab-
sorber cylinder damage could also result in
poor handling which could cause an accident.
4-16
[ECB00081]