5-28
5
Spring preload
1. Elevate the vehicle and place a suitable
stand under the frame.
2. Loosen the locknut.
3. Turn the spring preload adjusting nut in
direction (a) to increase the spring pre-
load and thereby harden the suspension,
and in direction (b) to decrease the spring
preload and thereby soften the suspen-
sion.
A special wrench can be obtained at a
Yamaha dealer to make this adjustment.
The spring preload setting is determined by
measuring distance A, shown in the illustra-
tion. 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 1.5 mm (0.06 in).
1. Locknut
2. Spring preload adjusting nut
3. Special wrench
1
2
3
(b)
(a)
Spring preload setting:
Minimum (soft):
Distance A = 351.5 mm (13.84 in)
Standard:
Distance A = 343.5 mm (13.52 in)
Maximum (hard):
Distance A = 336.5 mm (13.25 in)
UBAN12E0.book Page 28 Wednesday, June 30, 2021 2:17 PM
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