Arctic Cat 660 cc, Service Manual

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GEN-0049
RECOMMENDED OIL (660 cc)
The recommended oil to use is 0W-30 for the standard
model and Synthetic Turbo 0W-40 Oil (p/n 3639-510) for
the turbo models.
On 660 cc models after the engine break-in period, the
engine oil should be changed every 2500-3000 miles on
the standard model and every 2000 miles on the turbo
models and before prolonged storage.
Break-In Procedure
660 cc MODELS
The Arctic Cat 660 cc engine (when new or rebuilt)
requires a short break-in period before the engine is sub-
jected to heavy load conditions.
This engine does not require any pre-mixed fuel during
the break-in period.
To ensure trouble-free operation, careful adherence to the
following break-in guidelines will be beneficial.
* With occasional full-throttle operation.
To ensure proper engine break-in, Arctic Cat recommends
that the engine oil and filter be changed after 600 miles or
after one month, whichever comes first. This service is at
the discretion and expense of the snowmobile owner.
120 cc MODEL
The Arctic Cat 120 cc engine requires a short break-in
period (approximately 10 operating hours) before being
subjected to heavy load conditions or full-throttle opera-
tion. Strict adherence to the break-in procedure will con-
tribute to optimum performance and longevity of the
engine.
During break-in, a maximum of 1/2 throttle is recom-
mended; however, brief full-throttle accelerations and
variations in driving speeds contribute to good engine
break-in. After the 10 hour break-in period, the snowmo-
bile may be taken to an authorized Arctic Cat Snowmo-
bile dealer for a checkup and oil change. This service is at
the discretion and expense of the snowmobile owner.
Genuine Parts
When replacement of parts is necessary, use only genuine
Arctic Cat parts. They are precision-made to ensure high
quality and correct fit.
High Altitude Operation
Operating a 660 cc snowmobile at varying altitudes
requires changes in performance components. These
changes affect drive train components.
A high altitude information decal is located beneath the
hood of the snowmobile.
Drive Chain Lubrication
(120 cc Model)
The drive chain should be lubricated every 20 operating
hours with a dry, graphite-based chain lubricant. By using
a dry, graphite-based chain lubricant, dirt buildup on the
drive chain will be minimized. Before each lubrication,
inspect the drive chain for dirt accumulation.
To lubricate the drive chain, shut the engine off and wait
for all moving parts to stop, remove the drive chain guard
and lubricate the drive chain. After lubricating the drive
chain, install the drive chain guard.
If the drive chain is excessively dirty, it should be
removed and cleaned prior to being lubricated (see Drive
Chain and Sprockets in Section 8).
„
NOTE: If a dry, graphite-based chain lubricant is
not available, lubricate the drive chain with several
drops of petroleum-based oil. If the snowmobile is
operated in the summer with the optional wheel
kit, the drive chain should be lubricated more fre-
quently.
! CAUTION
Any oil used in place of the recommended oil
may cause serious damage.
! CAUTION
DO NOT use premixed fuel in the snowmobile gas
tank. Engine damage will occur.
0-200 miles
1/2 Throttle
(45 MPH-max)
200-400 miles 1/2-3/4 Throttle
400-600 miles 1/2-3/4 Throttle *
Single-Grade