Snowmobile Polaris 600 IQ LXT (2015 year). Instruction - part 13

55

THE PERFECT FIT

IQ Rear Suspension Adjustments

Torsion Spring Preload

To adjust rear torsion spring preload, rotate the three-position cam using 
the engine spark plug tool. Adjustment is easiest when the cam is 
rotated from low to medium, and then to high. Rotating directly from 
low to high will require significantly more effort.

Different rate torsion springs are available if a firmer ride is desired. See 
your dealer for more information. 

Soft

Medium

Firm

56

THE PERFECT FIT

IQ Rear Suspension Adjustments

Limiter Strap Position (Ski Pressure)

Ski pressure is set at the factory to 
deliver the optimum balance 
between ride and handling. If a 
rider prefers more ski pressure for 
improved steering performance, 
adjustments can be made to the 
front limiter straps. Tighten the 
straps to increase ski pressure. 
Loosen the straps to reduce ski 
pressure.

1. Remove the nuts and flat 

washers from the upper limiter 
straps.

2. Relocate the straps to the desired position.

3. Reinstall the nuts and washers. Tighten securely.

Upper

Nuts

57

THE PERFECT FIT

IQ Rear Suspension Adjustments

Suspension Coupling

On all POLARIS snowmobile rear suspensions, there are two torque 
arms that control the movement of the rail beam. Prior to the advent of 
suspension coupling, these torque arms could move independently of 
each other. Rear suspension coupling links the movement of the front 
and rear torque arms to each other. There are two types of rear 
suspension coupling.

Front To Rear Coupling and the Front Rear Scissor Stop 
(FRSS)

The front rear scissor stop (FRSS) couples the movement of the front 
torque arm with the rear torque arm and limits the amount of 
independence between the movement of the front torque arm and the 
rear torque arm.

When hitting a bump, the front torque arm starts to compress. The FRSS 
links that movement to the rear torque arm, causing it to compress and 
raise the rear suspension up as one, allowing the suspension to hit the 
bump only once and reducing kickback. 

The factory setting is usually adequate for all riders and conditions.

58

THE PERFECT FIT

IQ Rear Suspension Adjustments

Rear To Front Coupling and the Rear Rear Scissor Stop 
(RRSS)

The rear rear scissor stop (RRSS) couples the movement of the rear 
torque arm with the front torque arm and limits the amount of 
independent movement between the rear torque and the front torque 
arm.

Adjusting the RRSS either allows more weight to transfer to the rear for 
more traction, or allows less weight to transfer to the rear, resulting in 
improved cornering performance. An adjustment dot is located on the 
RRSS. This dot is on the longest end of the scissor stop. 

Rear Rear Scissor Stop (RRSS) - Attributes

Moving the RRSS to a higher position will have the following effects on 
the suspension:

• Reduced weight transfer. 

• Improved chatter bump ride. 

• Improved cornering performance.

• Increased load carrying capacity (2-up)