Yamaha VK10A Owner's Manual page 31

Spring preload setting:
Minimum (soft):
1
Standard:
2
Maximum (hard):
7
ESU13101
Adjusting the rear suspension full rate
ECS00750
NOTICE
Be sure to make this adjustment when
G
there is no load (rider or cargo) on the
snowmobile.
Make sure that the full rate adjusting bolt
G
ends are set at the same position on
each side.
TIP
Never allow the full rate adjusting bolt to move
while loosening or tightening the nut.
1. Loosen the nut 1/2 or 3/4 turn, while hold-
ing the adjusting bolt securely with a
wrench so it does not move.
1. Nut
2. Turn the full rate adjusting bolt to the de-
sired position.
Control functions
1. Nut
2. Full rate adjusting bolt
1. Full rate adjusting bolt
Spring rate and damping force setting
(full rate adjusting bolt installation posi-
tion):
Minimum (soft):
S
Standard:
S
Maximum (hard):
H
3. While holding the adjusting bolt securely,
tighten the nut.
Nut tightening torque:
49 Nm (4.9 m·kgf, 35 ft·lbf)
25