Polaris 2003 Universal Snowmobiles - Manual (Page 91)

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OPERATION
Track Warm-Up
5. The engine, drive system and track are now properly warmed up and
the machine may be driven following normal safety practices.
Always inspect for track damage before operating the snowmobile.
Use of traction products such as studs, ice growsers, etc. will
increase the possibility of track damage and/or failure. This could
cause loss of control, resulting in serious injury or death.
WARNING