Snow blowers can be a lifesaver during harsh winter months, but when they malfunction, it can be frustrating and time-consuming to diagnose the issue. By understanding common problems and their solutions, you can keep your snow blower running smoothly and ensure it’s ready to tackle the snow when needed.
Whether the issue is a non-starting engine or a clogged chute, knowing how to troubleshoot your snow blower can save you time and money. This article will equip you with the knowledge to identify and fix the most common snow blower issues, helping you maintain your equipment with confidence.
Check Spark Plug
Start by turning off your snow blower and disconnecting the spark plug wire to prevent accidental starting. Locate the spark plug, which is usually found on the front or side of the engine.
Remove the spark plug using a spark plug wrench. Inspect the plug for signs of wear or damage, such as a cracked insulator or heavily carbonized electrode. If the plug looks damaged, replace it.
If the plug appears okay, clean it using a wire brush to remove any dirt or carbon buildup. Check the gap between the electrodes with a spark plug gap tool, adjusting it to the manufacturer’s specifications if needed.
Reconnect the spark plug wire and attempt to start your snow blower. If it still doesn’t start, test for spark by grounding the removed spark plug against the engine and looking for a visible spark while cranking the engine. No spark likely indicates an ignition issue.
Inspect and Clean Carburetor
Start by locating the carburetor on your snow blower. It’s usually near the engine, connected to the air filter housing. Make sure the engine is off before you begin.
Remove the air filter cover and the air filter itself. With the air filter out, spray carburetor cleaner directly into the carburetor’s throat while turning the engine over manually. This helps break down deposits.
If your snow blower still isn’t running smoothly, you might need to take off the carburetor bowl. Use a clean piece of cloth and some carburetor cleaner to wipe away any dirt or residue.
After cleaning, make sure to reassemble the carburetor parts correctly. Replace the float and needle, secure the carburetor bowl, and ensure everything is aligned before tightening any screws. This attention to detail can prevent future issues.
Examine Fuel Line
Check the fuel line for any signs of damage or wear. The fuel line should be flexible and free of cracks. If the line looks brittle or cracked, it needs replacing.
Make sure the fuel is flowing freely to the carburetor. A clogged or kinked fuel line can prevent fuel from reaching the engine.
Inspect the connections at both ends of the fuel line. Ensure they are secure and leak-free. If you spot any leaks, tightening the clamps or replacing the line may be necessary.
Verify Engine Oil Level
To keep your snow blower running smoothly, you need to check the engine oil level regularly. Start by parking your snow blower on a flat, level surface. Make sure the engine is turned off and has had some time to cool down.
Locate the dipstick, usually marked with an oil symbol or the word “OIL.” Unscrew the dipstick carefully and clean it with a rag. Reinsert the dipstick without screwing it in all the way, then remove it again to read the oil level.
The oil should be between the “Add” and “Full” marks on the dipstick. If the oil level is low, add the recommended type of oil until it reaches the proper level. Be cautious not to overfill it, as too much oil can cause engine problems.
Once you’ve added the oil, screw the dipstick back in place securely. Regularly checking the oil level helps ensure your snow blower operates efficiently and extends its lifespan.
Look for Loose or Damaged Belts
One common issue with snow blowers is loose or damaged belts. The drive belt connects the engine to the auger system that blows the snow. If this belt is loose or worn out, your snow blower won’t function properly.
Start by removing the belt cover, which is usually a simple process. Check for any signs of wear, cracks, or damage on the belt.
If the belt is loose, you might be able to adjust it, but if it’s damaged or too worn, it will need to be replaced. Always use the correct belt type specified in your snow blower’s manual.
Clean or Replace Air Filter
To keep your snow blower running efficiently, it’s crucial to maintain its air filter. A clogged or dirty filter can cause your machine to underperform or not start at all. Regularly inspect the air filter, especially before heavy use or when you notice performance issues.
For cleaning, remove the air filter from its compartment—typically located in the engine area. Tap it gently to remove loose dirt, then use compressed air or a soft brush to clean more thoroughly. If it’s damaged or too dirty, replacing it is often the best option.
Check your owner’s manual for specific instructions on accessing the air filter for your model. Replace the filter once a year or more often if you use the snow blower frequently. Keeping the air filter clean ensures your snow blower’s engine breathes well and runs efficiently.
Check for clogged chute
A common issue with snow blowers is a clogged chute. Heavy, wet snow or debris can easily obstruct the chute, preventing the snow from being thrown efficiently. It’s important to regularly check and clear the chute to maintain the blower’s performance.
First, always turn off the snow blower before inspecting the chute. Using a tool or a cleaning rod, clear any packed snow or debris trapped inside. Avoid using your hands to prevent injury.
Regular maintenance can help prevent clogs. After each use, make sure the chute is clean and free of obstacles. Additionally, applying a non-stick spray to the chute can reduce the likelihood of future clogs.
Ensure Auger is Not Jammed
The first step in troubleshooting a snow blower is to make sure the auger isn’t jammed. Turn off the snow blower and disconnect the spark plug to ensure it won’t start accidentally.
Carefully inspect the auger and remove any debris, such as ice, rocks, or packed snow. Use a wooden tool, not your hands, to clear anything blocking the auger.
Once the auger is clear, try rotating it manually to check for any remaining obstructions or damage. If the auger moves freely, reconnect the spark plug and test the snow blower to see if the problem is resolved.
Test the Ignition Switch
To test the ignition switch on your snow blower, start by locating it near the engine. You’ll need a multimeter for this task. First, disconnect the ignition switch’s wires.
Set your multimeter to the continuity setting and touch the probes to the ignition switch terminals. When the switch is turned to the “On” position, the multimeter should indicate continuity. If there’s no continuity, the switch may be faulty.
Replace the ignition switch if it fails the test. Reconnect the wires, ensuring they’re secure. This should help restore the spark needed for your snow blower to start properly. If the problem persists, consider checking other ignition system components.
Replace worn shear pins
If your snow blower isn’t working correctly, worn or broken shear pins might be the issue. Shear pins are safety devices that connect the auger to the drive shaft. When the auger jams, the pins break to prevent damage to the machine.
To replace worn shear pins, start by disconnecting the spark plug for safety. Locate the shear pin on the auger and remove the broken piece with pliers. Align the holes in the drive shaft and auger, then slide the new pin in place.
Ensure the pin fits securely, and tighten any nuts or bolts as needed. Manually rotate the auger to check for proper operation. Always use manufacturer-recommended pins for compatibility and safety. Reconnect the spark plug when you’re done.