Polaris 2003 Universal Snowmobiles - Manual (Page 88)

86
OPERATION
Engine Break-In
No single action on your part is as important to long, trouble-free
machine life as proper break-in of a new or rebuilt engine. Premix the
first tank of gasoline with one pint of Polaris injection oil for each five
gallons of fuel. This, in addition to the lubrication supplied by the
injection system, will assure proper engine break-in.
Never mix brands of two cycle oil. Serious chemical reactions
can cause injection system blockage, resulting in serious engine
damage and the 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.
Do not operate at prolonged full throttle for the first three hours
of operation. Vary the throttle openings and machine speeds to
reduce friction on all close fitting machined parts and allow them
to break in slowly without damage.
Adequate snow coverage is necessary to properly break in your
machine. Avoid operating on ice, hard-packed surfaces, or
roads. Snow will provide the lubrication and cooling your
snowmobile needs for proper break-in. Inadequate cooling and
lubrication 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.
Drive with extra caution during the break-in period. Perform
regular checks on fluid levels, lines, and all other important
areas of the machine.
CAUTION