In 2011 alone, Polaris released over two dozen separate snowmobile models. While each make features a unique body design and engine type, general troubleshooting instructions and minor repair tips remain consistent for all Polaris snowmobiles. The company provides information on repairing certain systems in every snowmobile's manual to guide owners through this sometimes complex process.
Engine and Fuel System
When troubleshooting engine problems, one of the first places to start is with the engine's fuel supply. Owners should check to ensure the gas and fuel tanks are full and neither fuel is contaminated. Most Polaris snowmobiles take unleaded gasoline with a pump octane rating of at least 87. Drain any inferior or contaminated fuel from the fuel tank and refill with fresh fuel. Owners should also ensure the fuel supply and fuel lines are clean, secure, and unbroken. Replace any kinked fuel lines and clean clogged fuel lines thoroughly by adding isopropyl alcohol. If the engine experiences internal mechanical problems, Polaris instructs owners to take the engine to a certified dealer for authorized repairs.
Spark Plugs and Ignition
Faulty spark plugs can cause a Polaris snowmobile to run erratically, and can prevent the vehicle's engine from starting. If this is the problem, Polaris instructs owners to remove each spark plug from the engine's cylinders and replace it if the insulator tip is damaged or burnt. Additionally, owners should measure and set the spark plug gap to the correct width for that specific make and model. The owner's manual for each Polaris snowmobile provides specific spark plug repair information.
Check all electrical connections and systems if the snowmobile's engine does not turn over at all. This includes inspecting and replacing the main fuse and checking the snowmobile's battery, typically located underneath the main shroud on any Polaris snowmobile. Clean all battery terminals of buildup and replace all battery connections. Before re-installation, also charge the battery fully and tighten battery connections.
If a Polaris snowmobile overheats, the cooling system may require maintenance and repairs. First, refill coolant levels in both the radiator and in the side coolant bottle. Polaris snowmobiles typically take a 60/40 mixture of antifreeze coolant and distilled water. If coolant levels are sufficient, but the snowmobile still overheats, owners must bleed the fuel system of any trapped air in the cooling system. Detailed instructions on this repair and others can be found in any Polaris snowmobile owner's manual.
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