Yamaha RS90K Manuel D'atelier page 208

REAR SUSPENSION
Rear suspension full rate (RSG90)
1. Adjust:
• Full rate adjuster
Adjustment steps:
Installation
position
Spring rate and
damping
Standard
NOTE:
Be sure to make this adjustment when there is no
load (rider or cargo) on the snowmobile.
• Loosen the full rate adjusting nut 1 1/2 or 3/4
turns, while holding the adjusting bolt 2
securely with a wrench so it does not move.
CAUTION:
Never allow the adjusting bolt 2 to move while
loosening the nut.
• Turn the adjusting bolt 2 to the desired posi-
tion.
CAUTION:
Be sure the adjusting bolt ends are set at the
same position on each side.
• While holding the adjusting bolt securely,
tighten the nut 1.
Shock absorber nut:
49 Nm (4.9 m · kg, 35 ft · lb)
CAUTION:
Never allow the adjusting bolt to move while
tightening the nut.
• This model has a "Easy adjust" system for the
Full rate adjuster. The bolt has teeth on it. So
when the bolt is turned, it rides up and down the
bracket.
NOTE:
• The nut has to be loosen first, while the bolt is
held in place with a wrench.
• Then the bolt can be turned to adjust the shock
position up or down.
• If the bolt is turned with the nut tight, it is possible
to strip the teeth off the bolt.
2-80
INSP
ADJ
A B C
Soft Medium Hard
B