About the Study Guide

You are looking at a preview of what’s in the timed Illinois Snowmobile Ed Course. Feel free to look around, but you’ll need to register to begin progress toward getting your Snowmobile Safety Education Certificate of Competency.

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Beyond the pre-season checkup and maintenance, you can follow these suggestions to make sure your snowmobile runs cleaner and quieter.

  • Use high-grade oil and gasoline, which burn cleaner.
  • Tune the engine for your altitude, including the proper carburetor jet setting, which improves fuel efficiency and reduces emissions.
  • Change the spark plugs at least once during the season to ensure efficient fuel burning.
  • Avoid opening and closing the throttle continuously, which causes inefficient fuel burning and increases emissions and noise.
  • Don’t tamper with your exhaust pipes as that causes the machine to exceed legal noise limits.
Engine oil