Polaris Predator Owner's Manual page 161

ADJUSTMENTS
Carburetor/Idle RPM
If the engine idle speed is not satisfactory, and all other
conditions are favorable, the carburetor can be adjusted.
1. Warm up the engine by running the vehicle for five minutes,
or until operating temperature is reached.
2. Apply the park brake and place the transmission in neutral.
3. Adjust the carburetor idle screw (1) either in or out until the
desired idle RPM is reached. Turning the screw in
(clockwise) will raise RPM. Turning the screw out
(counterclockwise) will lower RPM.
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