How to Adjust the Idle on a Polaris RZR

The Polaris RZR is an ATV with a fuel-injected engine. The vehicle’s computer system automatically adjusts the idle as needed, so the RZR doesn’t have a traditional idle adjustment screw. Instead, the idle can be changed by adjusting the throttle cable. Over time, as this cable stretches out, the idle speed will fluctuate and adjustment will be required. The regular idle speed can be tweaked by lengthening the cable to slow the idle, or shortening it to increase the idle.


1)ย Remove the rear service panel covering the engine. Locate the throttle cable, which runs directly over the air intake. Find the bulge in the cable that is covered with a rubber tube. This is the cable adjuster.

2)ย Squeeze the rubber tube between your index finger and thumb and simultaneously press it back to expose the adjuster. Using a wrench, loosen the lock nut, freeing the adjuster.

3)ย Rotate the adjuster until the free play in the gas pedal is between 1/16 inch to 1/8 inch. This is the distance that the pedal must be pressed from a complete rest until the point where it begins to move the lever on the throttle body and raise the engine rpm. This is the proper position for the cable, and the idle should now be within the proper operating range of 900 to 1300 rpm. If it isn’t, continue adjusting the cable until the desired idle speed is obtained.

4)ย Tighten down the lock nut to hold the adjuster in place. Replace the rubber tube and the rear service panel.

Extra Tips:

*ย If you experience too much resistance while adjusting the cable, gently wiggle the throttle pedal at the same time as turning the adjuster.

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