Snowmobile Polaris 600 RUSH (2010 year). Manual - part 71

8.50

Steering and Suspensions

9923311 - 2010-2012 PRO-RIDE RUSH/Switchback/RMK Service Manual

© 2011 Polaris Sales Inc.

RMK 144/Switchback Assault



Pivots/Rear Idler

Assembly Notes

• Never re-use lock nuts. Always replace with new 

parts.

• All pivots must rotate freely after tightening 

fasteners.

• Install rear idler adjust spacers with flat side facing 

adjuster screw.

INNER SHAFT

SPACER

SHAFT

REAR IDLER WHEEL

A

A

A

B

A

A

A

A

INNER SHAFT

INNER SHAFT

REAR PIVOT

REAR TRACK SHOCK PIVOT 

INNER SHAFT

WASHERS

SPACERS

SPACER

WASHER

B

STANDARD FASTENERS

RMK REAR IDLERS

A

A

= T 

A: 35 ft-lb (47.4 Nm)



B: 35 ft-lb (47.4 Nm) Apply Loctite® 262™

CAUTION

Some rail shaft fasteners are pre-coated with locking 

agent. Never re-use these fasteners once removed. 

Always use new pre-coated fasteners.

8.51

Steering and Suspensions

8

9923311 - 2010-2012 PRO-RIDE RUSH/Switchback/RMK Service Manual

© 2011 Polaris Sales Inc.

RMK144/Switchback Assault Rail Assembly

Assembly Notes

• Never re-use lock nuts. Always replace with new 

parts.

• All pivots must rotate freely after tightening 

fasteners.

RAIL SLIDER

TENSIONER BLOCK

RAIL TIP

BOGIE WHEEL ASM.

RAIL BUMPER

INSIDE OF RAIL

A

B

C

D

D

JAM NUT

RAIL BUMPER

RAIL BRACE

SPRING GUIDE

BOGIE WHEEL MOUNT

DOMED WASHER

BUMPER INSERT

D

D

A

A

E

STANDARD FASTENERS

SWITCHBACK ASSAULT ONLY

RMK 144 ONLY

C

= T 

A: 3-6 ft-lb (4-8 Nm)



B: 4 ft-lb (5.4 Nm)



C: Torque nut until screw protrudes 7/32" (5.3mm)



D: 19 ft-lb (25 Nm)



E: 35 ft-lb (47 Nm)

CAUTION

Some rail shaft fasteners are pre-coated with locking 

agent. Never re-use these fasteners once removed. 

Always use new pre-coated fasteners.

8.52

Steering and Suspensions

9923311 - 2010-2012 PRO-RIDE RUSH/Switchback/RMK Service Manual

© 2011 Polaris Sales Inc.

RMK 144/Switchback Assault



Rail Fastener Locations

Components/Fasteners:

• A - Rail Tip

• B - Limiter Strap Shaft

• C - Rail Bumper

• D - Bogie Wheel Asm. (Mount to outside of rail).

• E - Front Shock Shaft

• F - Front Torque Arm Shaft/Screw

• G - Torsion Spring Guide

• H - Rear Track Shock Front Pivot Shaft

• I - Bogie Wheel Asm. (Mount to inside of rail).

• J - Rail Brace Asm. (Switchback Assault Only - 

Mount to outside of rail).

• K - Rear Pivot Shaft

• L - Bogie Wheel Asm. (Mount to outside of rail).

• M - Rear Idler Adjuster Block

• N - Rail Rumper (RMK 144 Only)

A

B

C

D

E

F

G

H

K

M

J

L

I

LEFT RAIL SHOWN

N

8.53

Steering and Suspensions

8

9923311 - 2010-2012 PRO-RIDE RUSH/Switchback/RMK Service Manual

© 2011 Polaris Sales Inc.

RMK 144/Switchback Assault



Front/Rear Torque Arm

Assembly Notes

• Never re-use lock nuts. Always replace with new 

parts.

• All pivots must rotate freely after tightening 

fasteners.

CARRIER WHEEL

COLLAR

INNER SHAFT

FRONT TORQUE ARM

LIMITER STRAP SLEEVES

PIVOT SHAFT

BUSHING

BUSHING

BUSHINGS

A

A

B

C

B

TORSION SPRING

SPRING ADJUSTER

SHOCK ROD

INNER SHAFT

REAR PIVOT

A

D

E

E

STANDARD FASTENERS

INSTALL STRAPS RUBBER SIDE OUT

2012 SWITCHBACK ASSAULT ONLY

LIMITER STRAP

= T 

A: 45 ft-lb (61 Nm)



B: 19 ft-lb (25 Nm)



C: 12 ft-lb (16 Nm)



D: 25 ft-lb (34 Nm)



E: 35 ft-lb (47.4 Nm)

CAUTION

Some rail shaft fasteners are pre-coated with locking 

agent. Never re-use these fasteners once removed. 

Always use new pre-coated fasteners.