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MOTONEIGE POLARIS
CENTRE D'AIDE
2/12/2024

2022+ 650/850 PRO RMK Matryx and Matryx Slash Lower A-Arm Removal and Installation

Required Tools and Supplies

  • 13mm Socket
  • 15mm Socket
  • 13mm Wrench
  • 15mm Wrench
  • Torque Wrench
  • Lower Control Arm Fasteners
  • Front Pivot Nut
  • Shock Fastener
  • Sway Bar Link Nut
  • Safety Glasses
  • Nitrile Gloves
  • Shop Rags

To learn more about tools, read the Tools and Fasteners Guide

Always wear safety glasses and nitrile gloves when servicing your Polaris snowmobile. To remove and install the lower A-Arm (control arm) on your 650 or 850 PRO RMK Matryx or Matryx Slash, follow these steps:

1. Ensure the snowmobile is on a flat, level surface.

2. Safely elevate the snowmobile. Refer to your Owner’s Manual for proper lifting techniques.

3. Counter-hold and remove the lower control arm spindle fastener, washers and nut with a 15mm socket and wrench. Discard the nut.

4. Remove the sway bar link fastener, washer and nut with a 13mm socket and wrench. Discard the nut.

5. Remove the fastener and washer securing the shock to the lower control arm with a 13mm socket and discard the fastener.

6. Remove and discard the three lower control arm nuts.

7. Counter-hold the front pivot fastener and nut and remove the lower control arm assembly with a 15mm socket. Discard the nut. 

8. Inspect the control arm for any damage or wear and replace if necessary.

9. Align the lower control arm assembly with the mounts on the sled and install the assembly.

10. Loosely secure with three new nuts. 

11. Loosely reinstall the pivot fastener through the right side of the vehicle and secure with a new nut.

12. Align the shock with its mount in the control arm and secure with the retained washer and a new fastener.

13. Reinstall the retained sway bar link fastener and washer. Secure with a new nut.

14. Align the ski spindle with the lower spherical bearing and reinstall the retained fastener up through the bottom while installing a retained washer on each side. 

15. Loosely install a new nut.

16. Torque the lower control arm nuts to 30 ft-lbs (41 Nm).

17. Counter-hold and torque the front pivot fastener to 40 ft-lbs (54 Nm).

18. Torque the shock fastener to 18 ft-lbs (25 Nm).

19. Counter-hold and torque the sway bar link fastener to 18 ft-lbs (25 Nm).

20. Counter-hold and torque the lower control arm spindle nut to 40 ft-lbs (54 Nm).

21. Finish by lowering the vehicle completely.

For more information, see your authorized Polaris Dealer. To find a dealer near you, use the Dealer Locator.
Maintenance tips, procedures and specifications can be found in your Owner's Manual.
To find diagrams and replacement part numbers, use the online parts catalog.

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