Arctic Cat Sno Pro 120 2011, Service Manual

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General Specifications

NOTE: General specifications for each 2011 Arctic
Cat Snowmobile can be accessed from the Arctic Cat
Cat Tracker Dealer Communication System online.
Snowmobile
Identification
The Arctic Cat Snowmobile has two important identifica-
tion numbers. The Vehicle Identification Number (VIN)
is stamped into the tunnel near the right-side footrest.
The decal also displays pertinent production information.
The Engine Serial Number (ESN) is stamped into the
crankcase of the engine.

NOTE: On the Crossfire/M-Series the VIN also
appears on a decal beneath the seat.
These numbers are required to complete warranty claims
properly. No warranty will be allowed by Arctic Cat Inc.
if the engine serial number or VIN is removed or muti-
lated in any way.
Recommended Gasoline
and Oil
RECOMMENDED GASOLINE
(570 cc)
The recommended gasoline to use in these snowmobiles
is 87 octane regular unleaded.

NOTE: In many areas, oxygenates (either ethanol or
MTBE) are added to the gasoline. Oxygenated gaso-
lines containing up to 10% ethanol or up to 15%
MTBE are acceptable gasolines; however, whenever
using oxygenated gasolines, the carburetor main jet
must be one size larger than the main jet required for
regular unleaded gasoline. For example, if a 220 main
jet is recommended for regular unleaded gasoline, a
230 main jet must be installed if using an oxygenated
gasoline.
When using ethanol blended gasoline, adding a gasoline
antifreeze is not necessary since ethanol will prevent the
accumulation of moisture in the fuel system.
RECOMMENDED GASOLINE
(500/600/1000/1100 cc Non-Turbo)
The recommended gasoline to use in these snowmobiles
is 87 octane regular unleaded. In many areas, oxygenates
(either ethanol or MTBE) are added to the gasoline. Oxy-
genated gasolines containing up to 10% ethanol or up to
15% MTBE are acceptable gasolines. Do not use gaso-
lines containing methanol.

NOTE: On the 500/600/1000 cc models for optimum
performance, do not exceed the recommended 87
octane gasoline. Using a higher octane gasoline will
not increase overall performance.
RECOMMENDED GASOLINE
(800/1100 cc Turbo)
The recommended gasoline to use in these snowmobiles
is 91 octane (minimum).

NOTE: If a situation arises wherein 91 octane gaso-
line is not available, 87 octane gasoline can be substi-
tuted; however, do not prolong the usage of 87 octane
gasoline as it will cause poor engine performance.
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
gasolines. Do not use gasolines containing methanol.
RECOMMENDED OIL (2-Stroke)
The recommended oil to use in the oil-injection system is
Arctic Cat Formula 50 Injection Oil for 500/570 cc mod-
els (p/n 5639-475 - qt) or (p/n 5639-476 - gal.) or either
Arctic Cat APV Synthetic 2-Cycle Oil (p/n 4639-349 -
qt) or (p/n 5639-469 - gal.) or Forumla SS Semi-Syn-
thetic Oil (p/n 5639-470 - qt) or (p/n 5639-471 - gal.) for
600/800/1000 cc models. These oils are specially formu-
lated to be used either as an injection oil or as a pre-mix
oil (for break-in) and meets all of the lubrication require-
ments of the Arctic Cat snowmobile engine.
RECOMMENDED OIL (4-Stroke)
The recommended oil to use is Synthetic 0W-40 Oil in all
temperatures and conditions.
OILCHARTJ
After the engine break-in period, the engine oil should be
changed every 2500-3000 miles (non-turbo) or 1500-
2000 miles (turbo) and before prolonged storage.
CAUTION
Do not use white gas or gasolines containing methanol.
Only Arctic Cat approved gasoline additives should be
used.
CAUTION
Any oil used in place of the recommended oil may
cause serious damage.
CAUTION
Any oil used in place of the recommended oil could
cause serious engine damage.
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