Winter preparation: the pre-season checklist for your snowmobile

Before getting out the toolbox, let's remember that there are two main types of snowmobiles: 2-stroke and 4-stroke. And each has its own personality. 2-stroke snowmobiles are the top of lightness and responsiveness. Their simpler engine runs on a mixture of oil and gasoline. The result: blistering acceleration, instant responsiveness… but also more frequent maintenance. These machines, prized by performance and thrill-seekers, require particular attention to carburetor settings and the quality of the fuel mixture.

In contrast, four-stroke snowmobiles emphasize robustness and longevity. Their engine, similar to that of a car, has an independent oil circuit. They consume less fuel, are quieter, and emit less smoke. However, they are heavier and require standard engine maintenance, including oil changes.

The choice between the two depends on your style: a two-stroke for sporty, adventurous riders who crave speed, and a four-stroke for those who prioritize durability and comfort. But whatever your machine, the golden rule remains the same: carefully prepare your snowmobile before setting off.

Mechanical checks: the foundation of a hassle-free season

Before you can dream about the trails, let's get down to business. To guide you through the key steps of proper preparation, we spoke with Carl Fortin, service manager at ADM Sport. A true expert in the field, he has been preparing and maintaining snowmobiles for many years before the start of the season. Here are his tips for a high-performing, trouble-free machine from the very first snowfall.

Suspension

The first thing to do is a complete check of the suspension. Good suspension ensures optimal driving comfort and excellent grip. Carefully inspect the springs, shock absorbers, and mounting points, and look for any signs of wear, rust, or oil leaks.

Skates and slides

Next, inspect the skids and runners. These often-overlooked parts are essential for smooth track movement. If they are too worn, they can damage the track and reduce performance on hard snow. Replace them without hesitation: it's a small investment that prevents big problems.

Rear wheels (bearings)

Our expert also recommends checking the rear wheels and their bearings. Spin them by hand: they should roll freely and quietly. Any squeaking, resistance, or abnormal play? It's time to replace the bearings. Worn bearings can quickly damage your suspension.

Clutch belt

For the clutch belt, inspect it carefully. If it shows any cracks, fraying, or uneven wear, replace it. Also, clean the clutch pulleys with a clean cloth and a little degreaser. A clean, properly tensioned belt ensures optimal power transfer and lightning-fast starts on the track.

Complete lubrication

Finally, don't neglect thorough lubrication. All pivot points, suspension arms, axles, and joints must be lubricated. Use a high-quality grease designed for low temperatures. This lubrication protects against corrosion, reduces friction, and extends the life of your components.

Engine and transmission maintenance

This is where the difference between 2-beat and 4-beat rhythms becomes apparent.

For 2-stroke engines

The key word is cleanliness. Start with the carburetor: carefully disassemble it, clean the jets, and make sure no dirt is clogging the passages. A dirty carburetor chokes the engine and increases fuel consumption. While you're at it, check the condition of the spark plugs. If they are blackened or fouled, replace them. New spark plugs ensure a better spark and easier starting, even at -20°C.

Next, inspect the oil tank and the fuel injection system. Always use a high-quality two-stroke oil suitable for winter temperatures. A good lubricant reduces smoke and protects the engine from premature wear.

For 4-stroke engines

The procedure is different: perform a complete engine oil change. Just like with a car, used oil loses its lubricating and antifreeze properties. Don't neglect the transmission oil. Too often overlooked, it plays a major role in the reliability of the drive system. Clean oil ensures smooth power transfer and protects the gears from wear.

Finally, check the drive belts, chains (for models equipped with them), and chain tensioner. Everything must be properly adjusted and clean. An improperly tensioned chain will result in a loss of power and increase the risk of mechanical failure.

The finishing touches that make all the difference

Once the mechanics have been thoroughly inspected, it's time for the finishing touches. Give the snowmobile a deep clean: body, engine compartment, and track. A good wash removes any dust, grease, or fuel residue accumulated during the previous season.

Check the condition of the brakes: pads, fluid level, and lever. Effective braking is crucial on packed snow or ice. Next, inspect the electrical system: battery, cables, and connectors. Recharge the battery if necessary and apply a small amount of dielectric grease to the terminals to prevent corrosion.

Ready to conquer the snowy trails?

Whether you ride a high-performance 2-stroke or a reliable 4-stroke, preparation is your best ally. So, get out your tools, put on your gloves… or better yet, entrust your snowmobile to the ADM Sport repair shop (link to the workshop appointment form) and leave with a machine ready to dominate the trails like never before!