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How to Properly Break in Your Engine.

  • Lubricate everything very well when assembling.
  • 2-stroke: add some extra oil to your gas tank 80:1 if oil-injected sled.
  • 4-stroke: you must prime your oil system
  • 1st fire-up is the most important! Let it sit and idle.
  • Do not go over 2k rpm.
  • Make sure your coolant is cycling.
  • Make sure the thermostat opens + 30 degrees.
  • Then shut it down.
  • Repeat the steps 4 times.
  • Run it in a break-in sequence, so we can seat the motor.
  • 1st run Run it about 2 hours and no more than quarter to half throttle and 1000 rpm below your maximum (DON’T PIN IT).
  • 2nd run 2-4 hours.
  • Do small WOTs (Wide Open Throttle) no more than 1 second of wot!
  • After 4 hours, change your oil (4-stroke only)
  • 2-stroke After 4 hours, decrease the ratio to 100:1 until you hit 8 hours.
  • Make sure you let the sled get up to operating temperature.
  • Must have the Thermostat open up before you load on each ride for preventative maintenance.
  • If you start your sled cold and get on the throttle right away, it will create excessive stress and resistance on your motor.
  • Increasing the chance of a breakdown
Tags: snowmobile engine