Husqvarna Weed Eater Won’t Stay Running(FIXED)

Having a well-functioning weed eater is essential for maintaining a neat lawn or garden.

However, encountering issues with your Husqvarna weed eater can be frustrating, especially when it won’t stay running.

In this post, we will explore common reasons why your Husqvarna weed eater may struggle to stay running and provide you with troubleshooting tips and solutions to address the problem effectively.

Let’s jump in.

Husqvarna Weed Eater Won't Stay Running

Husqvarna Weed Eater Won’t Stay Running

1. Check the Fuel

One of the common culprits behind a weed eater’s inability to stay running is contaminated or stale fuel. Follow these steps to ensure your fuel is in good condition:

  • Drain the old fuel from the tank.
  • Prepare a fresh fuel mixture according to the manufacturer’s specifications.
  • Clean the fuel filter and ensure it is not clogged.
  • Fill the tank with the fresh fuel mixture.

2. Inspect the Air Filter

A dirty or clogged air filter can restrict airflow and affect the engine’s performance.

Here’s how you can inspect and clean the air filter:

  • Remove the air filter cover.
  • Take out the air filter and inspect it for dirt, debris, or damage.
  • If the filter appears dirty, clean it with warm, soapy water.
  • Allow the filter to dry completely before reinserting it.
  • Reinstall the air filter and secure the cover tightly.

3. Examine the Spark Plug

A faulty spark plug can cause starting and running issues. Follow these steps to examine and replace the spark plug if necessary:

  • Locate the spark plug on your weed eater’s engine.
  • Remove the spark plug wire.
  • Use a spark plug wrench to remove the old spark plug.
  • Inspect the spark plug for signs of wear or damage.
  • If the spark plug is worn out or damaged, replace it with a new one.
  • Ensure the spark plug is properly gapped according to the manufacturer’s specifications.
  • Reinstall the spark plug and reconnect the spark plug wire.

Read Lawn Mower Makes Grinding Noise When Trying to Start(Solved)

4. Clean or Replace the Carburetor

A dirty or clogged carburetor can cause the engine to run poorly or not stay running.

Follow these steps to clean or replace the carburetor:

  • Locate the carburetor on your weed eater’s engine.
  • Remove the air filter and the cover to access the carburetor.
  • Carefully clean the carburetor using carburetor cleaner and a small brush.
  • Pay attention to small passages and jets that may be clogged.
  • If cleaning the carburetor doesn’t resolve the issue, consider replacing it with a new one.

5. Check the Ignition System

A faulty ignition system can prevent your weed eater from running.

Here’s what you can do to check the ignition system:

  • Inspect the ignition coil for signs of damage or wear.
  • Ensure the ignition coil is properly connected to the spark plug.
  • Check the ignition switch and wiring for any loose connections or damage.
  • If any components are damaged or malfunctioning, replace them accordingly.

Read Craftsman 25cc Weed Wacker Wont Stay Running(Solved)

6. Inspect the Fuel Lines

Damaged or clogged fuel lines can restrict fuel flow, leading to running issues. Follow these steps to inspect the fuel lines:

  • Check the fuel lines for cracks, leaks, or blockages.
  • Replace any damaged or clogged fuel lines.
  • Ensure the fuel lines are securely connected to the fuel tank and carburetor.

7. Addressing Compression Issues

Low compression can affect the engine’s performance.

Consider these steps to address compression issues:

  • Use a compression gauge to check the engine’s compression levels.
  • If the compression is low, it may indicate worn-out piston rings or a damaged cylinder.
  • Consult a professional technician for further inspection and repair if compression issues persist.

Read My Craftsman Trimmer Won’t Start(5 Quick Ways To Fix)

8. Adjusting the Idle Speed

Incorrect idle speed settings can cause the weed eater to stall or not stay running.

Follow these steps to adjust the idle speed:

  • Locate the idle speed adjustment screw on the carburetor.
  • Start the weed eater and let it warm up.
  • Slowly turn the idle speed adjustment screw clockwise or counterclockwise to achieve a smooth idle.
  • Find the optimal idle speed where the engine runs smoothly without stalling.

9. Assessing the Muffler

A clogged or damaged muffler can affect the weed eater’s performance.

Here’s what you can do to assess the muffler:

  • Inspect the muffler for signs of damage or blockage.
  • Clean the muffler and remove any debris or carbon buildup.
  • If the muffler is severely damaged, replace it with a new one.

Read How to Start Mower After Running Out of Gas(5 Tips)

10. Examine the Primer Bulb

A malfunctioning primer bulb can cause fuel delivery issues, leading to running problems. Follow these steps to examine the primer bulb:

  • Inspect the primer bulb for cracks or damage.
  • Ensure the primer bulb is properly connected to the fuel lines.
  • Replace the primer bulb if it is damaged or not functioning correctly.

11. Evaluate the Throttle Cable

A faulty throttle cable can impact the weed eater’s performance. Consider these steps to evaluate the throttle cable:

  • Check the throttle cable for any fraying, kinks, or damage.
  • Ensure the throttle cable is properly connected to the carburetor and throttle trigger.
  • If the throttle cable is damaged, replace it with a new one.

Read 11 Reasons Why John Deere D110 Won’t Start(Fixed)

Considering Professional Assistance

If you have followed the troubleshooting tips mentioned above and your Husqvarna weed eater still won’t stay running, it may be time to seek professional assistance.

Professional technicians have the expertise and tools to diagnose and repair complex issues that may require specialized knowledge.

Final Remarks

A Husqvarna weed eater that won’t stay running can be frustrating, but with proper troubleshooting and maintenance, you can resolve the problem and get back to maintaining your lawn or garden effortlessly.

Remember to follow the outlined steps, from checking the fuel and inspecting vital components to adjusting the idle speed and seeking professional help when needed.

By taking care of your weed eater and addressing any issues promptly, you can enjoy a reliable and efficient tool for your landscaping needs.

Read How to Start a Riding Lawn Mower with a Screwdriver(In 5 Steps)


How often should I clean my Husqvarna weed eater? 

It is recommended to clean your Husqvarna weed eater after each use to maintain its performance and longevity.

Can using stale fuel cause my weed eater to have starting issues?  

Yes, stale fuel can lead to starting and running problems. Always use fresh fuel mixtures according to the manufacturer’s guidelines.

What should I do if my weed eater’s engine lacks power? 

If your weed eater’s engine lacks power, consider cleaning or replacing the air filter, spark plug, and carburetor. Also, ensure your fuel mixture is correct and the fuel lines are not clogged.

Can I adjust the carburetor settings myself? 

It is recommended to consult the user manual or seek professional assistance when adjusting carburetor settings to avoid damaging the engine.

How often should I replace the trimmer line? 

The frequency of trimmer line replacement depends on usage and wear. Inspect the trimmer line regularly and replace it when it becomes worn or damaged.

Read Honda GCV160 Won’t Stay Running(5 Quick Ways To Fix)

George Bill
George Bill

George Bill is a Mechanical Engineer by Profession and an avid gardener and has been mowing his lawn for over 20 years. He has used a variety of different mowers during this time.
George is an expert at maintaining his mowers and over the years, he has learned many tricks and techniques for getting the best results from his mowers and is always happy to share his knowledge on this site.