37
OPERATION
Engine Break-In
No single action on your part is as important to long, trouble-free machine life as
proper break-in for a new or rebuilt engine. Familiarize yourself and others with the
following procedure for your Polaris snowmobile.
Premix the first tank of gasoline with one pint of Polaris injection oil for each 5 gal-
lons of fuel. This, in addition to the lubrication supplied by the injection system, will
assure proper engine break-in.
IMPORTANT:
Before operating with unmixed fuel,
make sure oil is being drawn from the oil tank.
WARNING
D
Never mix brands of two cycle oil. Serious chemical reactions can cause injec-
tion system blockage, resulting in severe engine damage and voiding of engine
warranty. The only oil recommended for this system is Polaris injection oil. This
oil has been specially formulated for all temperatures and has extreme cold flow
characteristics.
D
Do not operate at prolonged full throttle for the first three hours of operation. Vary
the throttle openings and machine speeds. This will reduce friction on all close
fitting machined parts and allow them to break in slowly without damage.
D
Avoid operating on ice or hard-packed surfaces, roads, etc. The absence of lu-
brication and cooling by snow will lead to overheating of the slide rail and track
resulting in premature wear and failure. Reduce speeds and frequently drive
into fresh snow to allow adequate cooling and polishing of the slide rail and track
surfaces.
D
Drive with extra caution during the break-in period. Perform regular checks on
fluid levels, lines, and all important areas of the machine.
With a basic understanding of how the snowmobile works, and with close attention
paid to maintenance tips, you will be ready to ride. Keep in mind these recommen-
dations as well as those covered throughout this manual.
