Polaris Offroad Vehicle - Manual (Page 122)

112
MAINTENANCE
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 should be noted:
D
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.
D During hot weather and/or high altitude operation the air screw can be ad-
justed for smooth operation by approximately 2 turns counterclockwise.
Choke Adjustment Procedure
4-cycle Engines
1. Flip choke toggle to the full off
position.
2. Slide boot off in-line cable adjust-
er sleeve. Loosen adjustment
locknut on in-line cable adjuster.
3. Turn cable sleeve adjusting nut
clockwise on in-line adjuster until
1/8″ (.3 cm) or more choke toggle
free play is evident.
4. Turn the cable sleeve adjusting
nut counterclockwise on the in-
line cable adjuster until the toggle
has zero free play. Then rotate it clockwise until 1/8″ to 1/4″ (.3 to .6 cm) toggle
free play is evident.
5. Tighten adjustment locknut.
6. Slide boots back over cable adjuster sleeve until they touch at the middle
point of the sleeve.
Idle
Screw
Air Screw
1/8I-1/4I Freeplay
(.3-.6 cm)
Choke Side View