1. Incorrectly Reassembled Carburetor: Ensure all carburetor parts are correctly reassembled, including jets, gaskets, and seals. A malfunctioning carburetor can lead to starting problems.
2. Clogged Fuel Line or Fuel Filter: Cleaning the carbs may have disturbed sediment in the fuel tank, causing a clogged fuel line or fuel filter. Check and clean the fuel line and replace the fuel filter if necessary.
3. Fuel Shortage: Confirm there's enough fuel in the tank. If it's low, add more fuel and check for any leaks or blockages in the fuel system.
4. Poor Spark: Check if the spark plug is clean and in good condition. A worn or damaged spark plug can lead to starting difficulties. Remove and inspect the spark plug, and replace it if necessary. Also, check the spark plug wire and ignition system components.
5. Choke Malfunctioning: Verify the choke is working correctly. If the choke is stuck in the open position, the engine won't receive enough fuel to start. Ensure the choke opens and closes smoothly.
6. Compression Issue: Low compression can cause starting problems. Conduct a compression test to check the health of the engine.
7. Electrical Issues: Check all electrical connections, including battery cables, wiring, and switches, for any loose connections, damage, or corrosion. Clean or repair as necessary.
8. Incorrect Carburetor Adjustment: If the carburetor settings were changed during cleaning, it may need readjustment. Refer to your snowmobile's manual for proper carburetor adjustments.
Remember to be safe while working on your snowmobile. If you're not comfortable troubleshooting and fixing the problem yourself, it's best to consult a professional mechanic for assistance.