Why Is My Husqvarna Chainsaw Hard to Start? Troubleshooting and Solutions

Why Is My Husqvarna Chainsaw Hard to Start

Husqvarna chainsaws are renowned for their power, reliability, and performance, making them a top choice for both professional loggers and homeowners. However, even the most robust chainsaws can sometimes be challenging to start, leaving users perplexed.

A Husqvarna chainsaw might be hard to start due to a variety of reasons, including issues with the spark plug, fuel system, or carburetor. Regular maintenance and troubleshooting can resolve these problems effectively.

In this comprehensive guide, we’ll explore the various reasons behind why is my Husqvarna chainsaw hard to start and provide you with practical solutions to get it running smoothly again.

Now, let’s explore the common reasons behind a Husqvarna chainsaw being hard to start.

Why Is My Husqvarna Chainsaw Hard to Start? Common Reasons Your Husqvarna Chainsaw Is Hard to Start

Spark Plug Problems

When the spark plug isn’t working correctly, it can lead to your Husqvarna chainsaw being hard to start. The spark plug is essential for providing a spark which ignites the fuel/air mixture in the cylinder. If the plug is faulty or dirty, it won’t be able to produce a sufficient spark, leading to a hard-to-start chainsaw.

Fuel System Problems

  • Incorrect fuel mixture: Husqvarna chainsaws need a specific fuel-oil mix to work properly.
  • If the mixture is incorrect, it can lead to the chainsaw being hard to start. Always follow the manufacturer’s guidelines for the correct fuel-oil ratio.
  • Clogged fuel filter: The fuel filter prevents debris from getting into the fuel line, which can cause damage and performance issues.
  • If the filter becomes clogged, it may restrict the flow of fuel to the engine, making the chainsaw hard to start.

Carburetor Issues

  • If the chainsaw’s carburetor is out of adjustment, it can cause the engine to stall, run poorly, or be hard to start.
  • Regularly adjusting and cleaning the carburetor will ensure proper fuel mixture and flow.

Air Filter Problems

  • A dirty or clogged air filter can severely affect the performance of your chainsaw.
  • The chainsaw requires clean air to mix with the fuel for the engine to run efficiently.
  • If the air filter is dirty, it can limit the amount of air that reaches the engine, making it hard to start.

Issues with the Start/Stop Switch

  • If your Husqvarna chainsaw has difficulties starting, the issue could be with the start/stop switch.
  • A faulty switch may prevent current from reaching the ignition system, making it impossible for the chainsaw to start.

Husqvarna Chainsaw Will Not Start? How to Troubleshoot the Issues in 6 Easy Steps

Below are the easy steps to troubleshoot your Husqvarna chainsaw if it is hard to start:

Step 1: Check the Spark Plug

Examine the spark plug for any visible signs of damage or wear and tear. If the spark plug is dirty, clean it with a wire brush. If damaged, replace it with a new one.

Step 2: Verify the Fuel Mixture

Ensure that the fuel mixture aligns with the manufacturer’s guidelines. If you are unsure about the fuel-oil ratio, refer to the chainsaw’s user manual or consult a professional.

Step 3: Clean the Fuel Filter

If the fuel filter is clogged, remove it and clean it thoroughly. Should it be beyond cleaning, replace it with a new one.

Step 4: Adjust the Carburetor

  • If the chainsaw’s carburetor is out of adjustment, carefully adjust it according to the manufacturer’s instructions.
  • If you’re unsure about the adjustment process, it’s best to take the chainsaw to a professional.

Step 5: Clean the Air Filter

If the air filter is dirty, remove it and clean it. If it’s too damaged or worn out, replace it with a new one.

Step 6: Inspect the Start/Stop Switch

  • Examine the start/stop switch for any faults. If the switch is faulty, it may need to be replaced.
  • It’s recommended to have this done by a professional to avoid causing any further issues with the chainsaw.

Why is Husqvarna Chainsaw won’t Start? Other Potential Factors and Possible Solutions

Some other potential issues are highlighted that might prevent a Husqvarna chainsaw from starting:

Decompression Valve

If your Husqvarna chainsaw is equipped with a decompression valve, ensure it’s functioning correctly. If it’s faulty, the chainsaw might be hard to start.

Solution: The decompression valve releases compression in the cylinder, making the starting process easier.

Engine Flooded

A flooded engine is another common issue. If the chainsaw doesn’t start after several attempts, the engine might be flooded with fuel.

Solution: Remove the spark plug and dry it out. Restart the saw without the plug, then replace it and try starting the saw again.

Broken Recoil Spring

If the recoil spring is broken, the pull cord that starts the chainsaw won’t retract.


  • You’ll need to replace the recoil spring to resolve this issue.
  • Remember to always consult your chainsaw’s user manual or a professional mechanic if you’re unsure about carrying out these checks and fixes yourself.

Human Error

Lastly, there’s always the chance that it’s a user error.


  • If you’re having problems starting your chainsaw, double-check to make sure you’re following all the necessary steps correctly.
  • This can include checking for issues with fuel mixtures, spark plugs, and more.
  • Taking a few moments to review the manual or consult a professional mechanic could save.

Why Won’t My Husqvarna Chainsaw Start? Maintaining Your Husqvarna Chainsaw for Optimal Performance

Regular maintenance is key to ensure your Husqvarna chainsaw starts reliably and operates at its best. Here are some maintenance tips for your chainsaw:

Regular Inspection: Regularly inspect your chainsaw for signs of wear, tear or damage. Look out for any cracks or leaks.

Routine Cleaning: Keep your chainsaw clean. Regularly clean the air filter, carburetor, and spark plug.

Proper Storage: Always store your chainsaw in a dry and cool place. Keeping it in a damp or hot environment can lead to corrosion or engine damage.

Regular Oil Changes: Regularly change the oil in your chainsaw. Dirty oil can clog up the fuel filter and cause the engine to run poorly.

Professional Servicing: Don’t hesitate to take your chainsaw to a professional for servicing. They can carry out thorough inspections and repairs, ensuring your chainsaw remains in top condition.


Husqvarna chainsaws are known for their reliability and power, but starting issues can occur due to various factors.

By understanding the starting process and following the troubleshooting steps and maintenance tips provided in this guide, you can ensure that your Husqvarna chainsaw starts effortlessly and operates at its best. Happy cutting!

Frequently Asked Questions (FAQs)

How often should I replace the spark plug in my Husqvarna chainsaw?

It’s recommended to replace the spark plug every 25 hours of operation or at the beginning of each cutting season.

Can using old gasoline in my Husqvarna chainsaw cause starting problems?

Yes, stale or contaminated fuel can clog the carburetor and fuel lines, making it challenging to start the chainsaw.

What’s the correct fuel mixture for a Husqvarna two-stroke chainsaw engine?

The standard ratio is 50:1, which means 50 parts gasoline to 1 part two-stroke engine oil.

Why does my Husqvarna chainsaw start but stall shortly after?

This issue can be due to carburetor problems, fuel line blockage, or air intake issues. Inspect these components for potential issues.

How can I prepare my Husqvarna chainsaw for winter storage to prevent starting problems?

Add a fuel stabilizer to the tank, run the chainsaw until it’s out of fuel, and store it in a cool, dry place.

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