Polaris ATV 2002 Owner's Manual page 139

MAINTENANCE AND LUBRICATION
Adjustments
Carburetor/Engine Idle RPM Adjustment
2 Cycle Engines
If the engine idle speed is not satisfactory, and all other conditions are
favorable, the carburetor can be adjusted as follows:
1. Warm up the engine by
running the vehicle
approximately five minutes.
2. Place the transmission in gear
with the parking brake
applied.
3. Adjust the carburetor idle
screw 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.
The following variations to air screw adjustment for 2-Cycle engines
should be noted:
S For improving cold weather start and reducing audible detonation
noise, the air screw can be closed from 1/2 to 1 turn by turning the
screw clockwise.
S During hot weather and/or high altitude operation the air screw can
be adjusted for smooth operation by approximately 2 turns counter-
clockwise.
136
Air Screw
Idle
Screw