2002 Polaris Universal Snowmobile Owners Manual - Page 78

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. CAUTION 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. 76