How to Fix a Chainsaw that’s Broken? A 2024 Guide

Richard McMann

Knowledge Based

how to fix a chainsaw in simple and easy stepsIt’s very common to know there are two types of chainsaws. One is powered with gas and the other with electric or battery powered. Both are different to operate and in the same way, different to fix when they won’t start.

That said, this question that how to fix a chainsaw often gets asked by the homeowners and we are here to address it thoroughly.

Hop on to the main discussion as follows:

How to Fix a Chainsaw in Simple and Easy Steps in 2024

If your chainsaw is gas-powered, there are quite a few things that can go wrong and they are relatively easy to fix. You simply need to diagnose the following checkpoints:

  • Check its fuel.
  • Make sure the fuel is fresh.
  • Whether the carburetor is clogged?
  • Check the spark plug.
  • Make sure the engine isn’t flooded.
  • How are the air filters?
  • Observe the temperature.
  • Check ignition coil, rewind spring, and recoil starter assembly.

If the chainsaw, that won’t start is electric or battery-powered then the problems might be different and one needs to check the following most obvious issues:

  • It is plugged and the power is on.
  • Make sure the battery is fully charged.

If you can’t figure out the problems beyond these simple checkpoints then you might need to have them checked by a professional.

Don’t forget to take safety gear while trying to fix the chainsaw that is not working. At any point, while you are trying to fix it, it may start. Be active and equipped with all safety gear while using it.

How to fix a STIHL Chainsaw that Won’t Start?

There are many problems that can cause your STIHL chainsaw to stop working. First of all, you need to determine the source of the problem. Once you find the problem then it’s easy to fix your chainsaw.

In the STIHL engine the crankshaft powers a flywheel. When it spins, the magnetic energy is generated by two magnets. When enough energy is generated, the ignition module gets tripped and sends sparks to the plug where it ignites the fuel.

If there lies a problem anywhere in the ignition system will stop working. The ignition module stops engine combusting for several reasons, some are:

  • Faulty wiring connections and broken wiring.
  • Bad or corroded spark plugs
  • Faulty ignition module
  • Improper airbag between the flywheel and ignition module.

So, start at the spark plug and work back to the flywheel and ignition module, diagnosing all parts of the ignition system.

Moreover, fuel intake problems also stop the chainsaw from functioning. A spin of a crankshaft creates a vacuum pressure and hence sucks fuel from the tank. Before the fuel is sent off to the cylinder, it is mixed with air. Anything that restricts the flow of fuel and air will cause your mix to be off and so it will not ignite in the cylinder.

Things that restrict the flow of fuel are:

  • Dirty or clogged fuel tanks.
  • Dirty fuel filters.
  • Loose fuel hoses
  • Dirty carburetor

Check, clean, and replace all fuel parts for healthy and well-functioning chainsaw.

Carburetors must be checked thoroughly as it pushes fuel into the cylinder and regulates through three chambers:

  • The metering section.
  • The mixing section.
  • The fuel-pump.

This process needs to run smoothly. If parts are worn, install a carburetor upgrade kit before replacing a carburetor.

For the entire spark and fuel system, compression is very important. It is generated when the piston is moved up and down in the cylinder along with the crankcase. Compression can get compromised from an air leak somewhere inside the engine or form a clogged fuel or air system. If it is not regulated properly, the piston can seize up in the cylinder and end the engine life.

How to fix a Poulan Chainsaw?

If your Poulan chainsaw is not working, the first thing you need to check is fuel. Make sure always to use a fuel mixture of 1-gallon fresh unleaded gasoline and 3.2 ounces of POULAN 2 cycle air cooled engine oil.

Make sure your fuel is not flooded. When you mix oil and fuel make sure it won’t exceed more than 90 days. In the same way check, your spark plugs if it is wet, it needs to be replaced.

Moreover, there are several other things to be checked when your POULAN 42 cc chainsaw is not working. They are mentioned below:

  • Check the filters; dirty filters need to be cleaned and then reinstalled.
  • Check the carburetor; warm weather may be the cause, as hot gas evaporates in the carburetor.
  • Check the chain; first, check the chain if it’s moving. If it’s moving but still not cutting properly, it has likely been dulled by accident contact with dirt.

Just In: Why Were Chainsaws Invented?

How to fix a Husqvarna chainsaw that Won’t Start?

There are some common solutions to fix your damaged Husqvarna Chainsaw. Let’s have a look at it.

Spark Plug:

Inspect the spark plug. It is defectively removed. In the same way, if porcelain is cracked, if an electrode is damaged or burned away replace it. Keep in mind if your plug has not been replaced in a few seasons, replace it anyway.

Inspect Carburetor:

Leaving fuel in the chainsaw for a long period of time results in a clog of the carburetor. If your carburetor is clogged, try to clean it with cleaner. If it won’t work, replace it.

Check Ignition Coil:

The engine won’t start if the ignition coil is defective. So, diagnose it, if the spark plug is in working condition, test the ignition coil, using an ignition coil tester. If it is defective, replace it.

Recoil Starter:

The engine is turning over when the recoil starter assembly engages with the crankshaft. The engine won’t start till the recoil starter assembly is defective. Remove the starter assembly and check it out if it’s functional or not.

Recoil Starter Pulley:

If the recoil starter pulley is broken, it won’t retract the starter rope as it retracts the starter rope when the rope is not in use. In this case, you simply need to replace the starter pulley.

Quench your ASMR thirst while watching this restoration video of an old Stihl chainsaw from Restoration Skills:

Some Last Words: How to Fix a Chainsaw in 2024?

In this article, we discussed how to fix a damaged chainsaw and make it properly functional. Different types of chainsaws as Husqvarna, POULAN, and STIHL and their possible faults are explained. That said, some basic problems such as fuel, coil, plug, and carburetors faults are highlighted as usually they are the cause of damaged chainsaw.

Richard McMann
Follow Me