Molly Ayala
If your Murray snowblower won't start, there are several things you can try. Firstly, check the spark plug for any signs of wear or damage and replace it if necessary. You should also inspect the carburetor for any clogging, as this can be caused by leaving fuel in the snowblower for extended periods. If the carburetor is clogged, clean it with a carburetor cleaner. Additionally, check the flywheel key for any damage and replace it if needed. If your snowblower still won't start, it could be due to a jammed gear or a loose starter. In this case, you may need to consult a professional for further assistance.
| Characteristics | Values |
|---|---|
| Engine | Tecumseh 5hp |
| Starting method | Electric start |
| Fuel | Gas |
| Spark plug | Replace if cracked or damaged |
| Carburetor | Clean with carburetor cleaner |
| Flywheel key | Replace if broken |
| Ignition coil | Replace if defective |
| Recoil spring | Replace if broken |
| Starter | Clean and oil |
| Fuel storage | Remove before storing |
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What You'll Learn
Check the spark plug for damage or wear
To check the spark plug for damage or wear, you will first need to remove it. Once you have the spark plug in your hand, begin looking at it for signs of damage.
The electrodes on a spark plug must be clean and sharp to produce the spark required for ignition. If the electrodes are broken off or flattened, the wrong spark plug may have been installed. A spark plug that is too long can cause damage to the engine, while a shorter one can cause poor gas mileage and spark plug fouling.
Check for any black, dry soot on the electrodes and insulator tip, which indicates a carbon-fouled plug. This can be caused by a dirty air filter, excessive idling, or too rich a fuel/air mixture. Black, oily deposits on the electrodes and insulator tip suggest an oil-fouled plug, which could be caused by oil leaking into the cylinders. A wet spark plug can be caused by engine flooding, which happens when you try to start the engine several times without success. Dark colouring, such as heavy black deposits, can indicate an overly rich condition, a possible vacuum leak, low compression, or too large a plug gap. If the porcelain insulator is cracked, an electrode is burned away or damaged, or there is heavy carbon buildup at the electrode, the spark plug should be replaced.
If you are unsure about the condition of your spark plug, you can use a spark plug tester. You should see a strong spark between the tester's terminals when the engine is cranking. If there is no spark, the spark plug is defective and should be replaced.
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Clean the carburetor
If your Murray electric start snowblower won't start, a clogged carburetor may be the issue. This is often caused by leaving fuel in the snowblower for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance that can clog up the carburetor and prevent the engine from starting.
- Turn off the snowblower engine and let it cool down.
- Remove the carburetor bowl, float bowl, and flathead.
- Spray and clean the dirty carburetor with a carburetor cleaner, removing debris with a cloth.
- Let it sit to remove any remaining impurities.
- If you want to avoid removing the carburetor, you can try using a carburetor cleaner in the gas. However, this may not be as effective and could cause issues if debris is knocked loose and clog other parts.
- If your carburetor has a lot of built-up varnish, it may be better to replace it instead of cleaning it.
You can also try the following method to clean the carburetor:
- Get a plastic bowl to put your carb parts into.
- Take the carburetor off the engine.
- There is a high and low-speed needle valve; turn them clockwise until they stop and count the turns. Be careful not to turn them too tightly.
- Remove both needle valves and place them in the plastic bowl.
- Take out the pin holding the float and note how the spring attaches.
- Look for the needle valve that is part of the float assembly and put it in the plastic bowl along with the rest of the float parts.
- Put an air tip on your compressor and blow through the small hole above the float assembly, through the high and low-speed needle valve that you removed, and any other passageway that you find. Alternate spraying carb cleaner and air through these passages.
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Inspect the flywheel key
Inspecting the flywheel key of a Murray electric start snowblower is a crucial step in ensuring the machine's proper functioning. This small metal piece plays a vital role in the snowblower's operation, and inspecting it can help identify any issues that may be preventing the machine from starting. Here is a comprehensive guide on how to inspect the flywheel key:
Step 1: Understanding the Flywheel Key
Before inspecting the flywheel key, it is important to understand its function and location within the snowblower. The flywheel key is a small metal component that fits into the crankshaft and engages with the flywheel. Its primary purpose is to protect the engine by breaking in half when the snowblower suddenly stops, such as when it hits a hard object. This sacrificial breakage prevents more severe damage to other engine components.
Step 2: Accessing the Flywheel
To inspect the flywheel key, you must first access the flywheel itself. Start by disconnecting the spark plug lead and securing it away from the spark plug. Then, remove the bolts holding the shroud in place and carefully take off the shroud. If your snowblower is equipped with a flywheel brake, remember to remove any cover and disconnect the outer end of the brake spring. Additionally, if your machine has a flywheel clutch, it is essential to remove it while securely holding the flywheel with a flywheel holder or a flywheel strap wrench.
Step 3: Removing the Flywheel and Inspecting the Key
With the flywheel exposed, it's time to remove it for a thorough inspection of the key. Rotate the flywheel puller nuts evenly until the flywheel pops free. Then, carefully remove the flywheel and the key. Examine the key for any signs of shearing or damage. Look for cracks, broken fins, or crankshaft damage. If the tapered sections of the flywheel show any signs of damage or play, they should be cleaned and smoothed out. If there is any wobbling when the flywheel is placed back on the crankshaft, it indicates an issue that requires attention.
Step 4: Replacing the Flywheel Key
If, during your inspection, you notice any damage or doubts about the condition of the flywheel key, it is best to replace it. Flywheel keys are relatively inexpensive and easy to replace. Obtain a new flywheel key designed specifically for your snowblower's make and engine model from an authorized dealer. Place the new key in position, ensuring proper alignment, and proceed to reassemble the components you removed earlier.
Step 5: Final Checks
Once you have replaced the flywheel key and reassembled the components, it is important to perform final checks to ensure everything is functioning correctly. Check for any play or wobbling in the flywheel, and ensure that it is securely attached to the crankshaft. Additionally, inspect the keyway, which is the slot on the crankshaft where the flywheel key sits. Make sure the keyway is free of debris and damage, and if there are any slight burrs, they can be carefully removed with a file.
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Remove and clean the starter shaft
To remove and clean the starter shaft of a Murray electric snowblower, begin by inspecting the starter shaft for any signs of damage or wear. Look for any debris or dirt that may be causing an obstruction. Next, carefully remove the starter shaft from the snowblower by loosening any bolts or screws holding it in place. Once removed, use a soft brush or cloth to clean the shaft, ensuring all dirt and debris are removed. You can also use a mild detergent or cleaning solution to help remove any stubborn dirt. Ensure the shaft is completely dry before reattaching it to the snowblower, securely tightening any bolts or screws.
If the starter shaft is not functioning properly, it may be jammed or faulty. In this case, it is important to first check the owner's manual for specific instructions on how to remove and replace the starter shaft for your model of Murray electric snowblower. If the shaft is jammed, carefully inspect the mechanism to identify any obstructions. Gently remove any debris or dirt that may be causing the jam. Reattach the starter shaft and test the snowblower to ensure it is functioning properly.
If the starter shaft is faulty or damaged, it may need to be replaced. Again, refer to the owner's manual for specific instructions on how to replace the starter shaft for your model. You may need to purchase a replacement starter shaft from an authorised dealer or online. When replacing the starter shaft, ensure that all components are securely connected and that there is no debris or dirt present that could cause further issues.
It is important to note that working on any electrical equipment or machinery can be dangerous, and it is always recommended to consult a qualified technician or repair specialist if you are unsure about any aspect of the process. Always ensure the power source is disconnected before beginning any work on the snowblower.
By following these steps and instructions, you can effectively remove, clean, and maintain the starter shaft of your Murray electric snowblower, ensuring optimal performance and longevity.
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Store without fuel to prevent carburetor clogging
Storing your snowblower without fuel is a great way to prevent carburetor clogging and ensure it starts easily when you need it. Here are some detailed instructions to help you prepare your Murray electric start snowblower for storage:
Drain the Fuel
Completely drain the fuel system before storing your snowblower. Old, broken-down gasoline can cause clogs and damage your snowblower. You can drain the fuel in several ways:
- Run your snowblower until it runs out of fuel.
- Drain the fuel through the fuel line.
- Use a siphon pump or fuel transfer pump to remove the gas from the fuel tank, then run the engine dry.
Use Fuel Stabilizer (If Necessary)
If you cannot completely empty the fuel tank, use a fuel stabilizer to prevent the gasoline from breaking down and causing clogs. Add the stabilizer to the fuel tank and run the engine for a few minutes to circulate it through the system.
Protect Your Snowblower
Once your snowblower is fuel-free, take steps to protect it during storage:
- Use a snowblower cover or a tarp to keep it clean and scratch-free.
- Store it in a safe, dry area of your garage or storage unit.
By following these steps, you'll prevent carburetor clogging and ensure your Murray electric start snowblower is ready for use when winter comes.
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Frequently asked questions
There could be a few reasons why your snowblower won't start. Firstly, check the spark plug for any signs of wear or damage and replace it if necessary. Secondly, the carburetor might be clogged, especially if fuel has been left in the snowblower for a long time. Try cleaning it with a carburetor cleaner.
It could be an issue with the flywheel key. The flywheel key is a small metal piece that fits into the crankshaft and engages with the flywheel. If it's broken, the engine won't start. Remove the flywheel and inspect the flywheel key, replacing it if necessary.
This could be due to a build-up of gum and dirt on the starter shaft. Try removing the starter, cleaning the shaft, and applying a light coat of WD-40.
It sounds like something may have gotten jammed. Try removing the shroud and checking if anything is jammed in the flywheel, preventing it from disengaging.
