Husqvarna 120 Mark II Problems And Effective Solutions

If you want to cut down branches or trees in your yard then you have probably heard of Husqvarna, they are one of the most popular chainsaw manufacturers because their chainsaws are a cut above the rest. But however good they are, Husqvarna chainsaws are not perfect. Today we’ll be looking at one of the chainsaws from the manufacturer; the Husqvarna 120 Mark II and it’s respective problems. And without further delay, here they are.

Table of Contents

What Is The Husqvarna 120 Mark II?

The Husqvarna 120 Mark II is a powerful gas-powered chainsaw that was designed to increase productivity and performance. It features a long-lasting 2.6 HP engine, a lightweight design, and a 20-inch bar for cutting logs up to 20 inches in diameter. Its advanced chain brake technology allows for improved control and safety while the automatic oiler ensures that the chain is always well lubricated.

Husqvarna 120 Mark II Problems

1. Starting Issues

When it comes to starting issues on the Husqvarna 120 Mark II then you’re very likely going to find problems like;

  • A cracked primer bulb
  • A dirty or clogged air filter
  • A damaged spark plug
  • A faulty carburetor
  • Faulty fuel lines

Troubleshooting Starting Issues

  • Check the primer bulb regularly and replace it when needed.
  • Clean your air filter regularly or replace it altogether if necessary.
  • Replace the spark plug when needed for optimal chainsaw performance.
  • Make sure your carburetor is properly adjusted and clean at all times for optimal performance.
  • Check and replace the fuel lines when needed for great performance from the Husqvarna 120 Mark II chainsaw.

2. Cutting Performance Problems

The Husqvarna 120 Mark II is a reliable chainsaw for home use but its engine and cutting performance can be hindered by a few issues like;

  • A damaged spark plug
  • Dull chainsaw teeth
  • A dirty air filter

Troubleshooting Cutting Performance Problems

  • You should always check the spark plug and replace it if needed as most of the chainsaw’s engine problems mah be coming from the spark plug.
  • If the chain is not cutting evenly or is slow to cut, it could be caused by dull chain teeth therefore you should sharpen them with a suitable sharpener.
  • Lastly you should check the filter and replace it when needed for better engine performance.

3. Air Filter Problems

If you’re experiencing poor performance from your Husqvarna 120 Mark II chainsaw it could be due to air filter problems. The air filter can become clogged with debris or damaged over time resulting in a decrease in engine power. And due to that fact the Husqvarna 120 Mark II’s deserves a category of its own.

Troubleshooting Air Filter Problems

  • Clean the filter regularly with a gentle brush. You can also use a vacuum if you have one to remove any dust and debris that may have accumulated in the filter.
  • Also inspect the air filter for any signs of damage or wear and tear.
  • If you see any damage to the filter or if it looks excessively dirty then replace it with a new one.
  • Check for any leaks or airway blockages in the hoses connected to the engine and make sure they are secure and not clogged up with debris or dirt.

4. Power Loss Issue

Not to be confused with the problem above, this issue sees the chainsaw starting up but gradually losing power. If you notice your Husqvarna 120 Mark II has lost some power then it is likely due to;

  • A clogged spark plug
  • A fouled carburetor

Troubleshooting Power Loss Issues

  • Clean the spark plug with a wire brush or replace it entirely if it is beyond cleaning.
  • Use carburetor cleaner if needed to return the Husqvarna 120 Mark II cgainsaw to optimal cutting performance.

5. Vibration Issue

Vibrations can sometimes occur in the Husqvarna 120 Mark II when the chain has not been tensioned properly or if the chain brake is engaged. This can make the chainsaw dangerous to use and likely cause fatigue to your arms.

Troubleshooting The Vibration Issue

  • Check to ensure that the chain brake is off and adjust chain tension as described in your Husqvarna 120 Mark II’s user manual.

How To Prevent Problems With The Husqvarna 120 Mark II

  • Be sure to check the spark plug of your chainsaw regularly and replace it when damaged or clogged beyond cleaning.
  • Replace the air filter as well if needed.
  • You may have to reset your carburetor settings to make sure that your chainsaw keeps running smoothly.
  • When you are done using your Husqvarna 120 Mark II, be sure to drain it of any fuel to reduce the risk of it greasing up in the chainsaw.
  • Always keep the teeth of the Husqvarna 120 Mark II sharpened to make sure it cuts effectively.

Does The Husqvarna 120 Mark II Have Any Common Issues?

The Husqvarna 120 Mark II is generally considered to be very reliable however there are a few common issues that could potentially arise. The most common issue is with the electrical system, which can be caused by worn spark plugs or a defect in the wiring. Additionally it’s common for debris like tree chips to accumulate in the air filter causing difficulty in starting the engine.

How Can I Prolong The Life of My Husqvarna 120 Mark II?

In order to preserve your Husqvarna 120 Mark II for as long as possible then you need to perform regular maintenance and make sure to replace parts as needed. Also be sure to use good quality fuel and lubricants specifically designed for two-stroke engines like this one. Always wear protective gear when operating it to extend its life expectancy even further.


After looking at the most common Husqvarna 120 Mark II problems it is clear that not all problems with the chainsaw should hold you back. Regularly checking the spark plug and the air filter can help to minimize the risk of an unexpected breakdown. The Husqvarna 120 Mark II is a powerful and reliable machine, and by following the manufacturer’s instructions and taking the time to regularly maintain the engine then you can ensure your chainsaw runs without any issues.