Spring is in the air, the sun is shining, and your lawn is calling out for some TLC. But when you pull out your trusty lawnmower from its winter slumber, you find it won’t start. That familiar rumble of the engine is replaced with a frustrating silence. Don’t despair! This article will guide you through the process of resurrecting your dormant mower, from basic troubleshooting to more advanced techniques. Whether you’re dealing with a stubborn gasoline engine or a finicky electric motor, we’ll cover it all. So, grab your tools and let’s get this lawnmower back in action!
A Quick Overview
Starting a lawnmower that’s been sitting can be tricky, but it’s not impossible. The main challenge is that fuel can go stale, spark plugs can get fouled, and the engine can get clogged with debris. This article will walk you through a systematic approach to diagnose and solve common problems, ensuring your mower is ready to tackle your lawn.
Safety First: Prioritize Your Well-being
Before diving into the technical aspects, it’s crucial to emphasize safety. Always prioritize your well-being when dealing with any machinery. Here are some essential safety precautions to follow:
- Wear Protective Gear: Always wear safety glasses and gloves to protect your eyes and hands from debris and potential spills.
- Work in a Well-Ventilated Area: Gasoline fumes are harmful, so work in an open area with good ventilation.
- Keep Children and Pets Away: Keep children and pets away from the work area to prevent accidents.
- Disconnect the Spark Plug: Before performing any work on the engine, disconnect the spark plug wire to prevent accidental starting.
Step-by-Step Guide: Starting a Gas Lawn Mower
Now, let’s get to the heart of the matter – starting a gasoline lawnmower that’s been sitting. Follow these steps carefully:
1. Inspect the Fuel
- Check for Fresh Fuel: Stale fuel is a primary culprit for starting problems. Inspect the fuel tank and look for signs of discoloration or separation. If the fuel is older than 3 months, it’s best to drain it and replace it with fresh, high-octane gasoline.
- Add Fuel Stabilizer: To prevent future fuel problems, add fuel stabilizer to your gasoline. Fuel stabilizers help prevent the breakdown of fuel molecules and extend its usable lifespan.
- Clean the Fuel Line and Filter: If the fuel is suspect, consider cleaning or replacing the fuel line and filter to ensure a smooth flow of fresh fuel to the engine.
2. Inspect the Air Filter
- Check for Clogging: The air filter prevents debris from entering the engine, but it can also get clogged over time. A clogged air filter restricts airflow, making it difficult for the engine to start.
- Clean or Replace the Air Filter: Clean a dirty air filter by tapping it gently against a hard surface or washing it with soap and water. If the filter is beyond cleaning, replace it with a new one.
3. Inspect the Spark Plug
- Clean the Spark Plug: The spark plug ignites the fuel-air mixture, and a fouled spark plug can prevent the engine from starting. Remove the spark plug and inspect it for carbon buildup or corrosion.
- Gap the Spark Plug: If necessary, clean the spark plug with a wire brush and set the gap to the manufacturer’s specifications. You can use a gap gauge for this purpose.
- Replace the Spark Plug: If the spark plug is damaged or severely fouled, replace it with a new one.
4. Inspect the Battery (For Electric Mowers)
- Check the Battery Terminals: If you have an electric lawnmower, inspect the battery terminals for corrosion or loose connections.
- Charge the Battery: If the battery is weak or discharged, charge it fully before attempting to start the mower.
5. Prepare the Engine
- Check the Oil Level: Before starting the engine, check the oil level and top it off if needed. Use the appropriate type of oil recommended by the manufacturer.
- Prime the Carburetor: If your mower has a primer bulb, press it several times to fill the carburetor with fuel. This helps get the fuel flowing to the engine.
6. Start the Engine
- Follow the Starting Procedure: Consult your owner’s manual for the specific starting procedure for your lawnmower model. This may involve pulling a starter cord, pushing a button, or using a key.
- Try Different Starting Methods: If the engine doesn’t start, try different starting methods, such as using the choke or varying the throttle position.
Troubleshooting Common Problems
If your lawnmower still won’t start after following these steps, it’s time to troubleshoot some common problems.
1. Check for Fuel Flow
- Verify Fuel Line Connection: Make sure the fuel line is securely connected to the fuel tank and carburetor.
- Check for Fuel Blockages: Examine the fuel line for any kinks or blockages that could impede fuel flow.
- Test the Fuel Filter: Remove the fuel filter and inspect it for dirt or debris. Replace the filter if necessary.
2. Inspect the Ignition System
- Check the Spark Plug Wire: Ensure the spark plug wire is securely attached to the spark plug and the ignition coil.
- Test for Spark: Hold the spark plug wire near a grounded metal surface while someone cranks the engine. A blue spark should jump across the gap.
- Inspect the Ignition Coil: If there’s no spark, check the ignition coil for damage or signs of wear.
3. Clean the Carburetor
- Clean the Carburetor: A dirty carburetor can prevent fuel from reaching the engine. Remove the carburetor and carefully clean it with carburetor cleaner and compressed air.
- Rebuild the Carburetor: If the carburetor is severely clogged or damaged, it may need to be rebuilt or replaced.
4. Check for Mechanical Issues
- Inspect the Starter Rope: If the engine doesn’t turn over, inspect the starter rope for wear or breakage.
- Check the Starter Motor: If you have an electric mower, check the starter motor for damage or malfunction.
Conclusion: A Fresh Start for Your Lawn Mower
With a little patience and the right approach, you can revive your long-dormant lawnmower and get it ready to conquer your lawn. Remember to prioritize safety throughout the process and consult your owner’s manual for specific instructions for your model. By systematically checking the fuel, air filter, spark plug, and other potential problem areas, you’ll be well on your way to a smooth and successful start. So, grab your tools, follow these steps, and enjoy a freshly mowed lawn this spring!
FAQ
Here are some common questions and answers about starting a lawnmower that has been sitting for a while:
What should I do before starting a lawnmower that’s been sitting?
The first step is to ensure the mower is in a safe and level area. You’ll also want to check the fuel levels. If the fuel is older than 3 months, it’s best to drain it and refill with fresh gasoline. Old gasoline can gum up the carburetor and cause starting issues. Next, check the oil levels. If the oil is dirty or low, change it out. This will help ensure that your engine is properly lubricated and running smoothly.
Can I just put new fuel in and start the lawnmower?
While adding fresh fuel is a good start, it’s not always enough to jump-start a lawnmower that’s been sitting. The carburetor might be clogged with old fuel or debris. If the mower still won’t start, you may need to clean the carburetor or replace it if it’s damaged.
How do I clean the carburetor on a lawnmower?
Cleaning a carburetor can be a messy job, but it’s often necessary to get an old lawnmower running. You can use a carburetor cleaner spray and a small brush to clean the jets and passages. Be sure to consult your owner’s manual for specific instructions on how to disassemble and clean the carburetor for your model.
How often should I change the spark plug?
Spark plugs are essential for starting your lawnmower. Over time, they can wear down and become fouled, causing starting problems. It’s recommended to change your spark plug every year or every 50 hours of use.
Why is my lawnmower smoking when it starts?
If your lawnmower smokes when you start it, it could be a sign of several things. It might be due to old oil in the engine. The smoke could also be caused by a problem with the air filter. Replace the oil and clean or replace the air filter to see if that resolves the issue.
Why is my lawnmower backfiring?
Backfiring is a sign that the engine is not getting enough air or fuel. This could be due to a clogged air filter, a fuel line blockage, or a problem with the carburetor. Inspect these components and clean or replace them as needed.
What should I do if my lawnmower won’t start?
If your lawnmower still won’t start after checking the fuel, oil, and spark plug, you may have a more serious problem. Consider checking the following:
* Battery: If your lawnmower has an electric starter, make sure the battery is charged.
* Ignition System: Check the spark plug wires and the ignition coil for any damage or loose connections.
* Starter Motor: Make sure the starter motor is working properly.
If you’re not comfortable troubleshooting these issues yourself, it’s best to take your lawnmower to a qualified repair shop.