About the Study Guide

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

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Beyond the pre-season checkup and maintenance, you can follow these suggestions to make sure your vehicle 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.