Engine Break-In - Polaris 120 XC SP Youth Universal Owner's Safety And Maintenance Manual

ENGINE BREAK-IN

Engine Break-In
The break-in period for your new snowmobile is defined as the first ten
hours of operation, or the time it takes to use the first two tanks full of
gasoline. No single action on your part is as important as a proper
break-in period. Careful treatment of a new engine will result in more
efficient performance and longer life for the engine. Perform the
following procedures carefully.
1. Drive slowly at first. Select an area which is open and will allow room
to familiarize yourself with vehicle operation and handling.
2. Vary the throttle positions. Do not operate at sustained idle.
3. Perform regular checks on fluid levels, controls and all important areas
on the vehicle, as outlined in the maintenance section.
4. Break in the oil. Change the oil after the first 20 hours of operation.
Never mix brands of oil. Serious chemical reactions can cause
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oil passage blockage, resulting in severe engine damage and
voiding of engine warranty. The only oil recommended for this
system is Polaris Premium 4 All Season Synthetic 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
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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.
Avoid operating on ice or hard-packed surfaces, roads, etc. The
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absence of lubrication 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 lubrication of the slide rail and track
surfaces.
Drive with extra caution during the break-in period. Perform
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regular checks on fluid levels, lines, and all important areas of the
machine.
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CAUTION