47
THE PERFECT FIT
FAST M-10 Rear Suspension Adjustments
Static Sag and Ride Height Settings
Rear Spring Preload
The top section of the crossover tube (the tube at the top of the rear
shock) has a threaded collar on it. The rear spring has a lock tab that fits
into the collar to allow easy spring preload adjustment. Refer to the ini-
tial set-up chart on page 51.
1. To increase preload, use
the tool kit spanner
wrench to rotate the
crossover toward the left
side of the snowmobile
(clockwise when viewed
from below). Rotate
toward the right side to
decrease preload
(counter-clockwise when
viewed from below). Be
sure the aluminum lock-
nut and adjuster collar
are locked against each
other before starting the
adjustment.
2. While adjusting, keep in mind that spring preload is a fine tuning
adjustment. Coarse adjustments should be made using the FRA.
NOTE:
Preload is set "softest" when the preload (dimension B in illus-
tration and set-up chart) is equal to zero. Adjusting spring pre-
load beyond this could cause damage to the threads.
C
B
