Why Does My Husqvarna Chainsaw Stall? Troubleshooting Common Issues

Experiencing issues with your Husqvarna chainsaw can be particularly frustrating, especially when you’re in the middle of important work and your tool decides to stall.

One key reason your Husqvarna chainsaw may be stalling is due to a damaged or incorrectly adjusted carburetor. Another common issue can be a dirty air filter obstructing the airflow.

In the following sections, we’ll delve into more detail about the possible causes behind your Husqvarna chainsaw stalling, along with step-by-step instructions on how to identify and fix these issues.

Why Does My Husqvarna Chainsaw Stall? Common Reasons Why Your Husqvarna Chainsaw Might Stall

The most common causes of Husqvarna chainsaw stalling include:

Damaged or incorrectly adjusted carburetor:

The carburetor is responsible for mixing fuel and air in the precise ratio needed to power the engine. If it’s damaged or not adjusted correctly, it can result in your chainsaw stalling.

Dirty air filter:

The air filter is responsible for filtering out dust and other debris that can enter the engine. If it’s blocked with dirt, it will not be able to supply the engine with enough air, resulting in your chainsaw stalling.

Fuel pump issues:

In some cases, a malfunctioning fuel pump may cause your Husqvarna chainsaw to stall. This problem is usually caused by a worn diaphragm, which needs to be replaced in order for the fuel pump to work properly.

Poorly seated spark plug:

If the spark plug isn’t fitted correctly, it won’t ignite the mixture of fuel and air, resulting in your chainsaw stalling.

Husqvarna Chainsaw Starts then Stalls? Troubleshooting Your Husqvarna Chainsaw

If your Husqvarna chainsaw is stalling, the first step is to troubleshoot and identify the exact cause of the problem before attempting any repairs.

Below are some tips and instructions on how to troubleshoot a stalling Husqvarna chainsaw:

Tip 1: Check the carburetor

Start by checking that the carburetor is in good condition and properly adjusted. A damaged or incorrectly adjusted carburetor can be a major source of Husqvarna chainsaw stalling.

Tip 2: Clean or replace the air filter

If your Husqvarna chainsaw has an air filter, make sure it is clean and free of debris. If it’s clogged with dirt, replace it with a new one.

Tip 3: Check the fuel pump

Inspect the fuel pump to make sure it’s in good condition and working properly. You can try replacing the diaphragm if it’s worn out or damaged.

Tip 4: Check the spark plug

Make sure the spark plug is properly seated and in good condition. If it’s worn out, replace it with a new one.

Tip 4: Replace fuel components

If your Husqvarna chainsaw is still stalling after troubleshooting the above components, you may need to replace some of the fuel components such as the fuel filter, fuel line, and spark plug.

Why will my Husqvarna chainsaw not stay running?

If your Husqvarna chainsaw starts but won’t stay running, the issue may be linked to the fuel system.

  • Fuel system issues can be caused by a number of factors including dirty fuel, a blocked fuel filter, or a cracked fuel line.
  • These factors can prevent the chainsaw from getting the proper mix of fuel and air, causing it to start and then quickly stall.

To troubleshoot, start by checking the fuel you’re using.

  • Old or contaminated fuel can cause performance issues. If your fuel is older than a month, dispose of it safely and replace it with fresh fuel.
  • Next, inspect the fuel filter. If it’s dirty, it can impede the flow of fuel to the carburetor.
  • You can try cleaning the fuel filter, but if it’s badly clogged, it’s best to replace it altogether.
  • Finally, examine the fuel line for any cracks or signs of wear.
  • Even a small crack can lead to a significant loss of fuel, which can cause the chainsaw to stall. If you find any damage, replace the fuel line.

Remember, whenever carrying out maintenance or repair work on your chainsaw, always ensure it is switched off and disconnected from any power sources to prevent accidents.


In conclusion, a stalling Husqvarna chainsaw can be a result of several factors. From a damaged carburetor, dirty air filter, malfunctioning fuel pump, to a poorly seated spark plug.

By following the troubleshooting tips, you can pinpoint and address the problem effectively. Always remember, safety first: disconnect power before conducting any repairs.


Why is my chainsaw stalling when I give it gas?

This is often due to a clogged carburetor or a blocked exhaust. Make sure the carburetor is clean, and the exhaust system is clear of obstructions.

How do I fix my Husqvarna chainsaw that won’t start?

Begin by checking the basics like fuel, spark plug, and air filter. If all seems well, delve deeper into potential issues with the carburetor or ignition system.

Can a bad spark plug cause a chainsaw to stall?

Yes, a fouled or damaged spark plug can lead to inconsistent sparking, causing the chainsaw to stall.

How often should I clean my chainsaw’s air filter?

Depending on usage and working conditions, it’s advisable to check the air filter after every use. Clean it as needed and replace it when it’s worn out.

What’s the correct fuel mixture for my Husqvarna chainsaw?

Typically, a Husqvarna chainsaw requires a fuel mixture of 50:1, which means 50 parts gasoline to 1 part two-stroke oil. Always refer to your chainsaw’s manual for specific recommendations.

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