Content Source: 2021 PRO-RMK / RMK KHAOS / SKS 155 Owner’s Manual (9931274 Rev 01) > Operation 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.

Click the CONTENTS link above for the Table Of Contents, or download a full PDF of the Owner Manual in the Owner Support area of Polaris.com

POLARIS Electronic Reverse Control (PERC)

WARNING
Improper reverse operation, even at low speeds, may cause loss of control, resulting in serious injury or death. Damage will occur to the chaincase or transmission if shifting is attempted when the engine is operating above idle speed.
  • Shift to or from reverse only when the snowmobile is stopped and when engine speed is at idle.
  • Look behind the vehicle before and while backing.
  • Avoid sharp turns.
  • Apply throttle slowly.
Electronic reverse will activate only if the engine RPM is below 3000.
caution
Engaging the starter when the engine is running WILL result in serious engine damage, especially if the engine is in reverse. Never engage the starter when the engine is running.
IMPORTANT
If equipped, secure rail scratchers to rail beams so they do not bend when in reverse.

Engaging Reverse

  1. Stop the snowmobile and leave the engine idling.
  2. Make sure the area behind your vehicle is clear.
  3. Push the yellow reverse button on the left-hand control for one second, then release. The engine will automatically reduce RPM and start a reverse rotation. A flashing reverse light on the instrument panel will indicate that the transmission is in reverse.
  4. Apply the throttle slowly to make sure the transmission is in reverse. The maximum engine RPM will be 5000 when in reverse.
TIP
If the engine stops running, the snowmobile will be in forward gear when it's restarted.

Disengaging Reverse

  1. Stop the snowmobile and leave the engine idling.
    caution
    Engaging the starter when the engine is running WILL result in serious engine damage, especially if the engine is in reverse. Never engage the starter when the engine is running.
  2. Push the yellow reverse button for one second and release. The engine will slow and begin to rotate forward. The light on the instrument panel will shut off.
  3. Apply the throttle slowly to make sure the vehicle is in forward.

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