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Control functions
41
To increase the spring preload and thereby
harden the suspension, turn the adjusting ring
in direction (a). To decrease the spring pre-
load and thereby soften the suspension, turn
the adjusting ring in direction (b).
TIP
The spring preload can be further adjusted by
changing the position of the spring seat.
Have a Yamaha dealer make this adjustment
as it requires special tools.
ESU13094
Adjusting the 2-up adjusting blocks
(RST90)
WARNING
EWS00760
Make sure that the 2-up adjusting blocks
are installed in the same position on both
sides of the snowmobile, otherwise poor
handling and loss of stability may result.
The spring force can be adjusted by changing
the position of the 2-up adjusting blocks.
TIP
● Be sure to make this adjustment when
there is no load (rider or cargo) on the
snowmobile.
● Use the special tools included in the own-
er’s tool kit to make the adjustment.
1. Insert the special tools into the 2-up ad-
justing block as shown.
2. Pull the lock pin and turn the special tools
to change the block position.
3. Release the lock pin.
4. Remove the special tools from the 2-up
adjusting block.
1. Spring preload adjusting ring
Spring preload setting:
Minimum (soft):
1
Standard:
4
Maximum (hard):
7
(b)
(a)
1. 2-up adjusting block
1. 2-up position (rider and passenger)
2. Solo rider position
3. Special tool
4. Lock pin
U8JA11E0.book Page 41 Monday, June 14, 2010 10:22 AM