Skip to content Toggle navigat Ways to Prep Your Snowmobile for Winter Jamie Gibson | Oct 08, 2019 8:18 AM Snowmobile maintenance is a huge part of getting your sled ready for winter . Nothing ruins a ride more than a breakdown, so we put together some tips to help you get your snowmobile ready for winter. Check the spark plugs Inspect spark-plug and wire condition. Ski-Doo E-TEC engines require indexing if removed or replaced, so be sure to check your owner’s manual for proper instructions. Replace plugs that appear excessively dirty or worn along with any worn or frayed wires. Inspect clutches and suspension Check clutches, the drive belt and suspension for wear and tear. Greasing and inspecting the suspension components and slides (hyfax) are a great idea. Slides typically have a small line across them indicating when they are worn out. If they are below the line at all, replace them. Items to check in the suspension include loose or worn parts and missing or loose idler wheels.