Carburetor Adjustments - Polaris Universal ATV 2000 Owner's Safety And Maintenance Manual

MAINTENANCE
Storage (Cont.)
7.Drain the recoil housing.
8.Block the ATV so all tires are sus-
pended off the ground.
9.Add Polaris Premium Storage Sta-
bilizer to the fuel tank (PN
2871326).
10.Cover the ATV with a canvas cov-
er. Do not use plastic or coated
materials since they do not allow
ventilation of the vehicle.
Transporting
Whenever the ATV is to be transported the following measures should be taken.
1.Turn the fuel valve to off.
2.Be certain the fuel cap, oil cap, and seat are installed correctly.
3.Always tie the frame of the ATV to the transporting unit securely using suitable
straps or rope.
4.Always place the transmission in gear and lock the parking brake.

Carburetor Adjustments

If the vehicle is to be operated at various altitudes and temperatures, certain adjust-
ments can be made to improve its operation and driveability. Above 6000 feet
(1800 m) the engine air/fuel mixture becomes overly rich. An engine loses approxi-
mately 3% of its power for each 1000 foot (304.8 m) increase in elevation. Although
this power cannot be regained, changes to the carburetor and drive system can
be made to allow efficient operation. These changes include:
1.Carburetor re-jetting to compensate for altitude and/or temperature changes.
2.Transmission convertor modification to adjust for engine horsepower loss during
high altitude operation. Contact your dealer.
3.On 2 cycle models, air screw adjustments can be made to compensate for tem-
perature changes and/or changes in altitude.
4.On 4-cycle models, pilot screw adjustments can be made to compensate for
temperature changes and/or changes in altitude.
NOTE: Contact your dealer for altitude adjustments. They have the training and
special tools required to perform all necessary modifications for you.
Accessories
There are a wide range of Polaris Accessories available for ATVs. Contact your
Polaris dealer to find out about the accessories available for your machine.
121
400 Engines
Remove plug and drain the carburetor