2008 Yamaha Motorsports RS Viking Professional Owners Manual - Page 30

2008 Yamaha Motorsports RS Viking Professional Manual

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Control functions Spring preload setting at the center shock absorber (spring preload adjusting ring position): Minimum (soft): 1 Standard: 1 Maximum (hard): 5 Spring preload setting at the rear shock absorber (spring preload adjusting ring position): Minimum (soft): 1 Standard: 2 Maximum (hard): 7 Adjusting the rear suspension extension spring preload ECS00270 1. Extension spring preload adjusting nut 2. Spring seat length Spring preload setting (spring seat length): Minimum (soft): 16 mm (0.63 in) Standard: 16 mm (0.63 in) Maximum (hard): 18 mm (0.71 in) Adjusting the rear suspension full rate ECS00750 CAUTION: The left and right extension spring preload must be set to the same setting. Uneven settings can cause poor handling and loss of stability. The extension spring preload can be adjusted by turning the extension spring preload adjusting nut. To increase the extension spring preload, turn the adjusting nut in. To decrease the extension spring preload, turn the adjusting nut out. CAUTION: G G Be sure to make this adjustment when there is no load (rider or cargo) on the snowmobile. Make sure that the full rate adjusting bolt ends are set at the same position on each side. NOTE: 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 holding the adjusting bolt securely with a wrench so it does not move. 24

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Control functions
24
Adjusting the rear suspension extension
spring preload
CAUTION:
ECS00270
The left and right extension spring preload
must be set to the same setting. Uneven
settings can cause poor handling and loss
of stability.
The extension spring preload can be adjusted
by turning the extension spring preload ad-
justing nut.
To increase the extension spring preload, turn
the adjusting nut in. To decrease the exten-
sion spring preload, turn the adjusting nut out.
Adjusting the rear suspension full rate
CAUTION:
ECS00750
●
Be sure to make this adjustment when
there is no load (rider or cargo) on the
snowmobile.
●
Make sure that the full rate adjusting bolt
ends are set at the same position on
each side.
NOTE:
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.
Spring preload setting at the center shock
absorber (spring preload adjusting ring
position):
Minimum (soft):
1
Standard:
1
Maximum (hard):
5
Spring preload setting at the rear shock
absorber (spring preload adjusting ring
position):
Minimum (soft):
1
Standard:
2
Maximum (hard):
7
1.
Extension spring preload adjusting nut
2.
Spring seat length
Spring preload setting (spring seat
length):
Minimum (soft):
16 mm (0.63 in)
Standard:
16 mm (0.63 in)
Maximum (hard):
18 mm (0.71 in)