Fuel Reserve Capacity; Fuel System Deicers - Polaris 2002 Snowmobile Owner's Manual

OPERATION
Fuel
Premium Fuel Switch
If you're uncertain about the quality or octane rating of the fuel you
use, turn your key switch to "ON/REG." The "Premium fuel" light
will go out. This setting will adjust the timing of your engine to run on
fuels with 87 octane or higher. Polaris does not recommend using fuel
with lower than 87 octane. Running your machine on "ON/REG" will
help protect your engine from damage caused by low octane fuels.

Fuel Reserve Capacity

On models equipped with fuel reserve, there are approximately two
gallons of fuel left in the tank when the fuel gauge reads "RES."

Fuel System Deicers

If you use non-oxygenated fuel, Polaris recommends the regular use of
isopropyl-based fuel system deicer (Polaris PN 2870505). Add one to
two ounces per gallon (8-16 milliliters per liter) of gasoline to prevent
engine damage resulting from fuel system icing and lean fuel mixtures.
Never use deicers or additives containing methanol.
If you use oxygenated fuel containing ethanol, additional alcohol
deicers or water absorbing additives are not required and should not be
used.
Prolonged exposure to petroleum based products may damage
paint. Always protect painted surfaces when handling fuel.
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CAUTION