2011 Polaris 550 IQ Shift Owners Manual - Page 36

2011 Polaris 550 IQ Shift Manual

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THE PERFECT FIT Rear Suspension Adjustments Initial Spring Preload Setting (Sag Method) To set up the 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. X 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 Y X. This is measurement Y. To determine sag, commonly referred to as ride-in, subtract measurement Y from X (sag=X-Y). If the measured sag is incorrect, adjust the FRA position and/or rear torsion spring preload. Suspension Recommended Sag IQ (121) IQ Comfort (136) 4-5 inches (10-13 cm) 4-5 inches (10-13 cm) Adjustment Torsion Spring Preload Torsion Spring Preload See Page 33 33 Tip: This is only an initial setup, and final spring preload may vary based on rider preference and riding conditions. Accessory springs with a higher load rating are available for some models. Please see your dealer for availability. 32

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32
THE PERFECT FIT
Rear Suspension Adjustments
Initial Spring Preload Setting (Sag Method)
To set up the 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 measurement Y.
To determine sag, commonly
referred to as ride-in, subtract mea-
surement Y from X (sag=X-Y). If the measured sag is incorrect, adjust
the FRA position and/or rear torsion spring preload.
Tip:
This is only an initial setup, and final spring preload may vary based on rider
preference and riding conditions. Accessory springs with a higher load rat-
ing are available for some models. Please see your dealer for availability.
Suspension
Recommended Sag
Adjustment
See
Page
IQ (121)
4-5 inches (10-13 cm)
Torsion Spring
Preload
33
IQ Comfort
(136)
4-5 inches (10-13 cm)
Torsion Spring
Preload
33
X
Y