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 Thu, 22nd Aug, 2024

To start a lawn mower that has been sitting, first check the oil level and replace it if necessary. Drain old fuel and refill with fresh petrol for peak performance. Inspect and clean the spark plug, replacing it if worn or damaged.

Clean the carburettor to remove blockages from old fuel. Prime the engine by pressing the primer bulb 3-5 times, and engage the choke before pulling the starter cord rapidly for 10-15 seconds. If the mower fails to start, troubleshoot by checking fuel flow, air intake, and spark components. The following steps will guide you through the process in detail.

 

Key Takeaways

  • Check oil level and replace if low or old to ensure proper engine lubrication.
  • Drain old fuel and refill with fresh petrol for optimal performance and to prevent starting issues.
  • Clean or replace the spark plug to ensure reliable ignition and remove carbon build-up.
  • Prime the engine by pressing the primer bulb 3-5 times to draw fuel into the carburettor before starting.
  • Engage the choke for a richer fuel mixture and pull the starter cord rapidly for 10-15 seconds to initiate starting

Preparing Your Mower for Restart

Essential mower maintenance steps are crucial for ensuring a successful restart after a period of inactivity.

Check the oil level and replace if necessary.

Drain old fuel and refill with fresh petrol.

Inspect and clean the spark plug, replacing it if worn.

Clean the carburettor to remove blockages from old fuel.

Verify that the air filter is clean for proper airflow.

For additional guidance on mower maintenance, consider reading this guide to maintaining a lawn mower which covers all the essential steps to keep your mower in top shape.

Step 1: Check the Oil

Before attempting to start the lawn mower, verify that the oil level is sufficient for proper engine lubrication.

Low oil can lead to engine damage.

Check the oil's consistency; if it's thick, dark, or has a burnt smell, drain and replace it with fresh oil.

Use the manufacturer's recommended oil type for your mower model.

Check the level using the dipstick before starting.

Step 2: Check the Spark Plug

After ensuring proper oil levels, the next component to inspect is the spark plug.

Remove the spark plug using a socket wrench and examine it for carbon buildup, rust, or corrosion. Clean the spark plug with a wire brush, check the gap, and adjust it to the manufacturer's specifications.

Reinstall the spark plug securely and replace it if it is considerably worn or damaged.

  • Use a socket wrench to remove the spark plug
  • Clean the spark plug with a wire brush
  • Check and adjust the spark plug gap
  • Reinstall or replace the spark plug as needed

Step 3: Prime the Engine

Several presses of the primer bulb are necessary to draw fuel into the carburettor, preparing the engine for starting.

Push the primer 3 to 5 times while the mower is level. Engage the choke before priming for a richer mixture.

Release the choke gradually as the engine warms. Follow the manual's specific priming instructions, as requirements may vary between models.

Step 4: Use the Choke if Your Mower Has One

Many lawn mowers feature a choke that must be engaged before starting the engine.

Set the choke to the "choke" position to enrich the fuel mixture for easier ignition. After starting, gradually move the choke to "run" to prevent flooding.

Adjust the choke correctly, especially on older mowers.

  • Engage choke before starting
  • Move to "run" after starting
  • Avoid excessive choking
  • Consult manual for specifics

To further understand how different lawnmower types operate and the features they offer, check out this guide to buying a lawnmower.

Step 5: Attempt to Start the Mower

Cranking the engine initiates the starting process for the lawn mower.

Pull the starter cord rapidly for 10-15 seconds, listening for ignition or unusual sounds. If it doesn't start, spray starting fluid into the carburettor to assist ignition.

Check the spark plug for corrosion or damage; clean or replace if needed.

Systematically check fuel flow, air intake, and spark components to diagnose issues.

Troubleshoot if it Doesn't Start

If the lawn mower fails to start, systematically investigate potential issues to identify the cause.

Check for these common culprits:

  • Old or contaminated fuel in the tank; drain and replace with fresh petrol

  • Fouled or damaged spark plug; clean or replace as needed

  • Clogged carburettor from fuel residue; clean thoroughly with carburettor cleaner

  • Low or old oil impeding engine performance; change oil per manufacturer recommendations

Clean or Replace the Spark Plug

Carefully inspect the spark plug for signs of carbon buildup, moisture, or wear that can prevent proper ignition and hinder the lawn mower's starting ability.

Use a socket wrench to remove the plug, and clean it with a wire brush or replace it if corroded or damaged.

Securely reinstall the plug and properly reconnect the wire to guarantee reliable starting performance.

Drain Old Fuel and Add Fresh

The lawn mower's fuel system plays an essential role in its ability to start and run efficiently.

Drain the old fuel from the tank and dispose of it properly, as petrol can degrade within 1-2 months.

Next:

  • Check the fuel filter for clogs and replace it if needed
  • Fill the tank with fresh petrol less than 30 days old
  • Consider adding a fuel stabiliser to prevent future degradation
  • Guarantee peak combustion and engine performance

Frequently Asked Questions

Why Won't My Lawnmower Start After Sitting for a Long Time?

Stale fuel, dirty spark plug, and thick oil can prevent starting after sitting. Siphon old petrol, replace it with fresh fuel. Clean/replace spark plug. Check oil level. Prime engine, engage choke, attempt to start.

How Do You Start a Stubborn Lawn Mower?

To start a stubborn lawn mower:

  1. Check fuel and oil levels.
  2. Clean/replace spark plug.
  3. Prime engine.
  4. Engage choke.
  5. Pull starter cord firmly.
  6. Adjust choke once started.
  7. Seek professional help if needed.

How Do You Start a Ride-On Lawn Mower?

The mighty seated lawn mower awaits your command! Fill the fuel tank, check the oil, inspect the spark plug. Engage the parking brake, test the safety mechanisms. If stubborn, spray starting fluid into the carburettor. Crank the engine, check the ignition. Conquer your lawn!

What to Do With a Lawn Mower That Has Been Sitting?

To revive a dormant mower, drain old fuel, replace the oil, clean the spark plug and carburettor, and check the air filter. Follow the manufacturer's starting procedure after maintenance. Seek professional help if issues persist.

Conclusion

Proper preparation, precise procedures, and proactive problem-solving prove paramount when preparing a previously parked power mower. Checking components, changing consumables, and carefully coaxing the carburettor create conditions conducive to combustion. Troubleshooting techniques target typical troubles, transforming a frustrating affair into a straightforward sequence. Methodical maintenance mitigates many malfunctions, making mower management markedly more manageable. With wisdom and wherewithal, even long-languishing lawn mowers leap to life, launching into landscaping with legendary liveliness.

To ensure the longevity and efficiency of your lawn care tools, consider investing in garden machinery, including high-quality lawnmowers, grass trimmers, and other essential equipment.

Popular Brands To Buy

When it comes to choosing the right lawnmower for your garden, there are several popular brands to consider, each offering a range of high-quality options:

Explore these brands to find the lawnmower that best suits your lawn care needs.

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