Content Source: 2020 600/800 HO/850 AXYS Conventional Tunnel Owner’s Manual (9929775 R02) > The Perfect Fit Chapter

IMPORTANT

The Owner's Manual for this vehicle contains warnings, instructions and other information you must read and fully understand before safely riding or performing maintenance on this vehicle.Always follow the warnings and instructions in Owner's Manual.

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SUSPENSION QUICK SET-UP GUIDE

The front and rear suspensions on your snowmobile are easy to adjust. Just remember three simple steps:
Step 1: Ride your snowmobile.
Ride the snowmobile in various terrain to fully experience the existing suspension settings before making any adjustments.
Step 2: Adjust the torsion spring to tune vehicle balance.
After riding, you should be able to determine if the snowmobile needs more or less transfer.
  • For more transfer, decrease the torsion spring preload.
  • For less transfer, increase the torsion spring preload.
If you prefer your snowmobile has lighter steering, decrease the torsion spring preload or increase the front track shock spring preload.
Step 3: Adjust shock clickers (if equipped) for ride quality.
For models equipped with monotube shocks, always adjust the rear torsion spring preload to enhance bottoming resistance.
For models with shock clickers, you can adjust the clickers to control bottoming and adjust ride comfort.
  • Turn a clicker counter-clockwise to decrease damping for a softer ride.
  • Turn a clicker clockwise to increase damping for a stiffer ride and less bottoming.
NOTE
Always adjust the clicker at least one click below full stiff (full clockwise) or shock damage could occur.
Test ride the snowmobile and continue making spring and clicker adjustments until you achieve the perfect ride.
NOTE
Adding traction components, such as traction studs or additional ski skag carbides, or changing the factory equipped track, could change handling characteristics. Addition setup may be required.

Shock Locations

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Rear Track Shock
Front Track Shock
Front IFS Shock

Shock Compression Damping

The primary adjustment for overall vehicle balance is torsion spring preload. Perform this adjustment first. After adjusting torsion spring preload to your satisfaction, compression damping adjustments can be made to control ride quality and bottoming resistance.
Compression damping can be adjusted at the front suspension and at the front and rear track shock. Make adjustments in 2-click increments, then test ride. When adjusting the front suspension, always adjust both clickers equally.
To stop bottoming of the front or rear suspension (stiffer ride), rotate the clicker(s) clockwise two clicks (as viewed from the top of the clicker), then test ride. Repeat the adjustment until bottoming stops and the desired ride quality is achieved.
For a more plush ride at the front or rear suspension, rotate the clicker(s) counter-clockwise two clicks, then test ride. Repeat the adjustment until the desired ride quality is achieved.

Torsion Spring Adjustments

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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.
NOTE
Adding 1+1 seat, or additional cargo may affect handling and require a spring rate change.
Torsion Spring Setting Recommended Usage
Low

Rider(s) and gear =140-180lb

If less than 140, use the optional spring chart for softer springs.
Medium

Rider(s) and gear = 180-220lb
High

Rider(s) and gear = 220-260lb

If above 260, use the optional spring chart for heaver springs.

Optional Springs

Part Number

Spring Type

Description

7041942–329

Spring, Torsion

.375/77, BLK, LH, HEAVY

7041943–329

Spring, Torsion

.375/77, BLK, RH, HEAVY

7041627–067

Spring, Torsion

.347/77, BLK, LH, LIGHT

7041628–067

Spring, Torsion

.347/77, BLK, RH, LIGHT

Optional Springs (INDY SP/XC/XCR)

If the correct balance cannot be obtained by adjusting the stock springs, please install the appropriate optional heavy or light springs listed below.

Part Number

Spring Type

Description

7043859–329

Spring, Torsion

LH Light Duty

7043860–329

Spring, Torsion

RH Light Duty

7045207–329

Spring, Torsion

LH Heavy Duty

7045208–329

Spring, Torsion

RH Heavy Duty

7045209–329

Spring, Torsion

LH Extra Heavy Duty

7045210–329

Spring, Torsion

RH Extra Heavy Duty

Front Track Shock Spring Settings (Indy Models)

Factory settings, combined with user adjustments to the rear torsion spring, should be all that’s necessary to provide the best riding experience for most riders. The primary adjustment for overall vehicle balance is the rear torsion spring preload. Perform this adjustment first.
Always perform shock spring preload adjustments with the weight of the vehicle removed from the shock and with the shock at full extension.
NOTICE
Never adjust spring preload to an installed length longer than the factory length or shorter than the minimum length as shown in the following chart. Damage to the suspension could result. When decreasing preload, make sure at least two turns of preload are holding the retainer against the spring.

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INDY SP

INDY XC

Front Track Shock Spring Settings

Factory Spring

Maximum Installed Length

Minimum Installed Length

INDY SP

1.25" (3.2 cm)

0.75" (1.9 cm)

INDY XC

1.88" (4.8 cm)

1.38" (3.5 cm)

INDY XCR

2.12" (5.4 cm)

1.62" (4.1 cm)

Front Track Factory Clicker Settings

Model

Clicker Setting

(from full hard)

INDY SP

N/A

INDY XC

5

INDY XCR

Low: 6

High: 5

Front Track Shock Spring Settings (Switchback Assault/SKS Models)

Factory settings, combined with user adjustments to the rear torsion spring, should be all that’s necessary to provide the best riding experience for most riders. The primary adjustment for overall vehicle balance is the rear torsion spring preload. Perform this adjustment first.
Always perform shock spring preload adjustments with the weight of the vehicle removed from the shock and with the shock at full extension.
NOTICE
Never adjust spring preload to an installed length longer than the factory length or shorter than the minimum length as shown in the following chart. Damage to the suspension could result. When decreasing preload, make sure at least two turns of preload are holding the retainer against the spring.
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Front Track Shock Spring Settings

Factory Spring

Maximum Installed Length

Minimum Installed Length

Switchback ASSAULT


SKS 146

1.25" (3.2 cm)

1" (2.5 cm)

Switchback SP

2" (5 cm)

1.75" (4.5 cm)

600 RMK 144

 Not Adjustable Not Adjustable

600 Voyageur

 Not Adjustable Not Adjustable

Front Track Factory Clicker Settings

Model

Clicker Setting

(from full soft)

Switchback ASSAULT

2

SKS 146

2

Rear Track Shock Factory Clicker Settings

Indy XC Models

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Model

Factory Clicker Setting

(From Full Stiff)

Indy XC

5

Switchback Assault/SKS Models

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Model

Clicker Setting

(from full soft)

Switchback Assault

8

SKS 146

8

Rear Rear Scissor Stop (RRSS) (If Equipped)

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)

WEIGHT TRANSFER DURING ACCELERATION

The preferred method for controlling weight transfer during acceleration is by adjusting the rear rear scissor stop. Use the scissor stop tool located in your tool kit it make the adjustments.
To decrease weight transfer under acceleration (for improved cornering), rotate the stop to a higher position.
To increase weight transfer or ski lift during acceleration, move the stop to the rearward upper position. The stop may also be rotated to a lower position for even more weight transfer if desired.
Low Position — This setting will increase weight transfer
Medium Position — This setting is the production setting and will provide the best overall trail riding
High Position — This setting will decrease weight transfer
Rearward Upper Position (optional hole location) — This setting will increase weight transfer
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High Low Medium Low
The preferred method for controlling weight transfer during acceleration is by adjusting the rear rear scissor stop (RRSS) . The factory setting is the best for most trail riding conditions.
To decrease weight transfer under acceleration (for improved cornering), rotate the RRSS to a higher position.
To increase weight transfer or ski lift during acceleration, rotate the RRSS to a lower position.
TIP
Your dealer can help you with initial setup and additional setup instructions to help you achieve your optimum ride. A scissor stop tool is also available from your dealer.

Front Suspension (IFS) Shock Adjustments (if equipped)

Always perform shock spring preload adjustments with the weight of the vehicle removed from the shock and with the shock at full extension.
To reset IFS clickers, rotate the clicker to full stiff, and then back off the same number of clicks for each shock.

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IFS SHOCK SPRING SETTINGS

FACTORY SPRING

FACTORY INSTALLED LENGTH

MINIMUM INSTALLED LENGTH

INDY SP

10.75” (27.3 cm)

10” (25.4 cm)

INDY XC

10” (25.4 cm)

10” (25.4 cm)

INDY XCR

9.75” (24.8 cm)

9.25” (23.5 cm)

Switchback ASSAULT

10” (25.4 cm)

9.5” (24 cm)

SKS 146

10” (25.4 cm)

9.5” (24 cm)

Switchback SP

10” (25.4 cm)

9.5” (24 cm)

600 RMK 144

10.5” (26.7 cm)

10” (25.4)

600 Voyageur

10.5” (26.7 cm)

10” (25.4)

IFS Remote Reservoir Shock Factory Clicker Settings

Model

Clicker Setting

(from full hard)

INDY SP

N/A

INDY XC

12

INDY XCR

Low: 6

High: 5

Switchback ASSAULT

6

SKS 146

6

Cornering Adjustments

To improve cornering ability, remove up to 1/2" of preload from factory IFS spring setting. Trade-off for removing 1/2" of preload will add steering effort.

Limiter Strap Adjustment

The front torque arm limiter strap is set at position .

POLARIS recommends leaving the limiter strap length at position to maintain the optimum ride characteristics of the snowmobile. Riders who desire less ski pressure and more weight transfer toward the rear of the snowmobile can lengthen the limiter strap by changing to position .

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  1. Loosen the lock nut.
  2. Adjust the limiter strap.
  3. Tighten the lock nut.
    TORQUE

    16 ft-lbs (21 Nm).

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