Polaris 600 RUSH 2013 Owner's Manual For Maintenance And Safety page 31

Fuel Type Selection
Whenever using ethanol, MTBE or other forms of oxygenated gaso-
lines, the fuel type designation setting must be changed to "Eth" in the
gauge. When using the recommended 91 non-ethanol gasoline, always
select the "91-non" setting.
Whenever in doubt of your fuel
purchase, use the "Eth" setting as
a safeguard.
Use the following procedure to
change the fuel type designation in
the gauge. Refer to the fuel type
selection label located inside the
left side panel.
1. Start the engine.
2. Lock the parking brake.
3. Press and release the
SELECT button or SET
switch until "FUEL" is dis-
played in the lower section of
the gauge.
4. Press and hold the SELECT button or SET switch until the desired
fuel type is displayed in the center of the screen.
FEATURES
27