5
NOTE: For optimum performance,
use only 91 octane (minimum) gasoline.
In many areas, oxygenates (either ethanol
or MTBE) are added to the gasoline.
Oxygenated gasolines containing up to
10% ethanol or up to 15% MTBE are
acceptable gasoline. Do not use gasolines
containing methanol.
Recommended Injection
Oil
The recommended oil to use in the oil-
injection system is either Arctic Cat APV
Synthetic 2-Cycle Oil (p/n 4639-349 - qt)
or (p/n 5639-469 - gal.) or Formula SS
Semi-Synthetic Oil (p/n 5639-470 - qt) or
(p/n 5639-471 - gal.). This oil is specially
formulated to be used either as an injec-
tion oil or as a pre-mix oil (for break-in)
and meets all of the lubrication require-
ments of the Arctic Cat snowmobile
engine.
Filling Gas Tank
Since gasoline expands as its temperature
increases, the gas tank must be filled to
its rated capacity only. Expansion room
must be maintained in the tank particu-
larly if the tank is filled with cold gaso-
line and then moved to a warm area.
Also, if the snowmobile is to remain on a
trailer after filling the gas tank, the bed of
the trailer must be maintained level to
prevent gasoline from draining out
through the gas tank vent hose.
Break-In Gas/Oil Mixing
Instructions
Before mixing gasoline and oil, make
sure the oil is at room temperature (20°
C/68° F). Use a U.L. approved 22.7 l (6
U.S. gal.) gasoline container for mixing
the gasoline and oil. To properly mix the
fuel at a 100:1 ratio, use the following
procedure:
1. Pour gasoline into the gasoline con-
tainer until approximately half full.
2. Pour 236 ml (8 fl oz) of the recom-
mended 2-cycle oil into the gasoline
container.
3. Install cap on gasoline container and
shake the mixture vigorously.
4. Fill the gasoline container with gaso-
line; then cap the gasoline container
and shake the mixture vigorously.
5. Using a fine-mesh screened funnel,
pour the fuel mixture from the gaso-
line container into the snowmobile
gas tank.
Engine Break-In
The Arctic Cat engine (when new or
rebuilt) requires a short break-in period
before the engine is subjected to heavy
load conditions.
CAUTION
If a situation arises wherein 91
octane gasoline is not available, 87
octane gasoline can be substituted;
however, do not prolong the usage
of 87 octane gasoline as it will cause
poor engine performance.
CAUTION
Do not use white gas or gasoline
containing methanol. Only Arctic
Cat approved gasoline additives
should be used.
CAUTION
Any oil used in place of the recom-
mended oil could cause serious
engine damage.
! WARNING
Always fill the gas tank in a well-ven-
tilated area. Never add gasoline to
the snowmobile gas tank near any
open flames or with the engine run-
ning. DO NOT SMOKE while filling
the gas tank. Do not sit on the snow-
mobile without first installing the gas
tank cap.
CAUTION
Never mix oil and gasoline in the
snowmobile gas tank.
! WARNING
Always fill the gas tank in a well-ven-
tilated area. Never add gasoline to
the snowmobile gas tank near any
open flames or with the engine run-
ning. DO NOT SMOKE while mixing
fuel or filling the gas tank.
