Polaris Trail Touring Owner's Manual page 37

THE PERFECT FIT
EDGE 136 Rear Suspension Adjustments
Initial Spring Preload Setting (Sag Method)
To set up the EDGE rear suspension
torsion spring preload, measure the
distance between the ground and
rear bumper. This is measurement
X.
Take the first measurement with no
rider and with the rear suspension at
full extension.
Tip: The rear bumper may need to be
lifted upward slightly to fully extend
the rear suspension.
Next, have the rider drop down
hard on the seat and bounce up and
down several times, collapsing the
rear suspension. With the rider
seated, measure the distance
between the ground and the rear
bumper at the exact location used
for measurement X. This is mea-
surement Y.
To determine sag, commonly
referred to as ride-in, subtract measurement Y from X (sag=X-Y).
Adjust sag by rotating the torsion spring preload cams located on the
rear torque arm. Use the illustration for reference. The ideal amount of
Sag for the EDGE rear suspension is four inches (X-Y=4).
If the rear suspension rides in less than three inches or more than five
inches with the torsion spring preload cams at their maximum range of
adjustment, optional torsion springs (softer or stiffer, respectively) may
be required. This is only an initial set-up, and final spring preload may
vary based on rider preference and riding conditions.
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X
Y