Yamaha RST90A Offroad Vehicle User Manual


 
Control functions
40
the spring preload and thereby soften the
suspension, turn the adjusting nut in di-
rection (b).
TIP
The spring preload setting is determined by
measuring distance A, shown in the illustra-
tion. The longer distance A is, the higher the
spring preload; the shorter distance A is, the
lower the spring preload.
3. Tighten the locknut to the specified
torque. NOTICE: Always tighten the
locknut against the adjusting nut, and
then tighten the locknut to the speci-
fied torque.
[ECS00860]
Rear torsion springs
WARNING
EWS00750
The left and right spring preloads must be
adjusted to the same setting. Uneven set-
tings can cause poor handling and loss of
stability.
To increase the spring preload and thereby
harden the suspension, turn the adjuster in di-
rection (a). To decrease the spring preload
and thereby soften the suspension, turn the
adjuster in direction (b).
ESU10985
Adjusting the spring preload of the
rear shock absorber (RS90GT /
RS90LTGT)
The spring preload can be adjusted by turning
the adjusting ring on the rear shock absorber.
1. Spring preload adjusting nut
2. Distance A
3. Locknut
Spring preload setting*:
Minimum (soft):
RST90 111.5 mm (4.39 in)
RST90GT 122.1 mm (4.81 in)
Standard:
RST90 112.5 mm (4.43 in)
RST90GT 122.1 mm (4.81 in)
Maximum (hard):
RST90 122.5 mm (4.82 in)
RST90GT 132.1 mm (5.20 in)
* Distance A changes 1.5 mm (0.06 in)
with each full turn of the adjusting nut.
(a)
(b)
2
1
3
Tightening torque:
Locknut:
42 Nm (4.2 m·kgf, 30 ft·lbf)
1. Spring preload adjuster
Spring preload setting:
Minimum (soft):
S
Standard:
M
Maximum (hard):
H
(a)
(b)
1
U8JA11E0.book Page 40 Monday, June 14, 2010 10:22 AM