Snowmobile Maintenance Guide

Before the first ride of the season, run through a comprehensive pre-season checklist. Remove the fog oil you used for storage and start the engine briefly to burn it off. Check the track: look for cracking, missing lugs, and damaged rods. Inspect track tension and adjust per the manual (a loose track can damage the tunnel; a tight track stresses the front drive shaft). Check the slides (hyfax) for wear — worn hyfax damage the tunnel. Check all fluid levels: chaincase oil (two-strokes), engine oil and coolant (four-strokes). Test electric start, reverse, and all lights and gauges. Inspect the skis and carbides — worn carbides reduce steering precision on groomed trails. Replace the carbides if they're less than 50% remaining. Install a fresh drive belt if you didn't do it at the end of last season.

During the riding season, quick checks before each ride catch developing issues before they become trail breakdowns. Check track tension every 10–15 hours (tracks stretch during use and can loosen significantly after the first few rides of the season). Add chaincase oil if needed. Check fuel level and mix (for oil-injected two-strokes, verify the oil tank is adequately filled). After every wet or extremely cold ride, wipe down the suspension and chassis to prevent ice buildup. Inspect the drive belt at every oil change — replace it before it fails, not after. Lubricate all grease fittings per the service schedule. If you ride in conditions where ice builds up on the running board or track, a knock-out session before long storage keeps moisture from freezing into damaging configurations.

Proper summer storage protects your sled from fuel system degradation, corrosion, and rodent damage — the three most common sources of off-season damage. Fuel system: either drain all fuel completely (difficult with modern injected engines) or add fuel stabilizer to a full tank and run the engine long enough for the stabilizer to circulate throughout the system. Engine internals: fog (spray preservative oil) into the air intake while the engine is running, then kill it while fogger is flowing — this leaves a protective oil film on cylinder walls. Track: relieve track tension completely (lower the rear limiter) or lift the rear of the sled so the track hangs free. Chassis: spray accessible metal surfaces with corrosion inhibitor. Cover the sled and store it in a dry location away from rodent access.