Polaris 2005 RMK - Manual (Page 56)

53
OPERATION
Fuel
The fuel used in your Polaris engine is as important to engine life and
performance as the lubricant used.
Your Polaris engine is designed to run on 87 octane non-oxygenated or
89 octane oxygenated pump gasoline. There’s a great deal of
variability in the quality of the 87 octane gasoline available across the
country, so we encourage the use of premium fuel when possible.
Premium Fuel Switch
Your Polaris snowmobile is
equipped with a key function
to adjust the timing on the
machine as you change fuels.
It’s very important to the life
of your engine that you use
this feature.
When using fuels with a
pump-posted octane rating of
91 or higher, turn the key
switch to ON/PREM. When
the engine is started, a yellow
Premium Fuel light
illuminates on the instrument
panel. When the key is in this
position, the fuel must be a
minimum of 91 octane.
Most high performance
machines require the use of
premium fuels. Substituting
other fuels may cause engine
damage.
CAUTION
Using fuels with a lower than recommended octane or operating
with obstructed fuel systems will result in serious and costly
engine damage. Always use the recommended fuels for your
machine.
Premium Fuel Setting
Regular Fuel Setting
OFF
ON/
PREM
ON/
REG
START
(OPT.)
OFF
ON/
PREM
ON/
REG
START
(OPT.)