Yamaha YFM250R-W Owner's Manual page 39

3
(b)
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
4-21
Spring preload setting:
Minimum (hard):
Distance A = 222 mm (8.74 in)
Standard:
Distance A = 230 mm (9.06 in)
Maximum (soft):
Distance A = 234 mm (9.21 in)
ECB00090
NOTICE
Never turn an adjusting mechanism beyond
the minimum and maximum settings.
3. Tighten the locknut to the specified torque.
Tightening torque:
Locknut:
42 Nm (4.2 m·kgf, 30 ft·lbf)
ECB00080
NOTICE
Always tighten the locknut against the adjust-
ing nut, and then tighten it to the specified
torque.
4