6 typical Problems Of Husqvarna Chainsaws

Husqvarna makes lawnmowers and chainsaws for industrial and domestic use. The Husqvarna appears to have a common issue, with the spark plug being the most common source of failure.

The role of the spark plug is to burn the fuel in the combustion chamber of your chainsaw, and when it stops producing a sufficient spark, your Husqvarna chainsaw’s engine will suffer as a result of this.

This article will provide answers to Husqvarna losing power problems.

Normally, if the engine isn’t powerful enough, the Husqvarna may not perform as well as it could. The loss of power could be caused by several factors. The piston, spark plug, and cylinder in the mowers start system.Husqvarna Chainsaws

When any of these problems surface, cutting gets harder as the blade system becomes dull. However, the major source of the problem can be traced back to the mower’s start system.

The piston and cylinder of your chainsaw’s engine work together to create compression for combustion in the mowers start system. Certain issues can cause Husqvarna’s loss of power:

Here are six typical problems for Husqvarna losing power.

Husqvarna losing power problems.

  • A faulty spark plug

Once the spark plug cannot ignite fuel in the combustion problem, they will lose power, and so the Husqvarna cannot function well.

  • Blunt or dirty blades

A blunt blade or blades that are not sharp won’t produce power. Also, your mower may lose power due to dirt and corrosion.

When any of this happens, you’ll find that the blades slow down and the motor has to work harder to turn them when they are coated in dirt. When the blade is turned on, it cuts the grass by rotating on a crankshaft. However, if this rotation is obstructed, the engine may overload and shut down or lose power.

  • Low gas

Another reason why your Husqvarna is losing power could be as a result of low gas. A fuel or gas issue is experienced when mowing uphill as there must be a smooth transfer of gas or fuel to the carburetor. Your mower’s power may also be affected by low oil levels in the crankcase.

  • Carburetor issue

The carburetor combines gas and air to produce ignitable fuel that powers the engine. The fuel vapors required to provide the mower with the extra power needed to go uphill may not be accessible if the carburetor is filthy.

This is quite easy to detect and fix. Checking to see if the carburetor is broken is the first step. Then replacing any damaged seals or gaskets may be enough to fix the issue.

  • Engine Oil

Husqvarna mower engines require engine oil for lubrication, cleaning, and cooling. The oil in the engine, however, cannot be overfilled. Any extra oil in the crankcase will flow into the combustion chamber.

When the mower demands more power, such as when the blades are engaged, the presence of oil will prevent the fuel vapor from burning properly. Too much oil will also spill into the exhaust and block it, limiting combustion airflow.

  • Muffler Blockage

The mower’s muffler is where the burned gas and other fumes are released. Debris and fluid clogging the muffler stop the burned gas from exiting your mower, causing major issues such as a seized motor.

Your muffler is likely clogged if you detect colored smoke coming from your lawnmower. As part of a normal lawn mower maintenance program, clean your muffler at the beginning of each season.

My Husqvarna chainsaw won’t spin.

Is your chainsaw blade not spinning? Check the chain. The problem could be that the chain is too tight. When the throttle is engaged, the blade may not spin and could damage your Husqvarna clutch and other crucial parts.

If the chainsaw refuses to turn, there are likely several reasons for that. Listed below are the typical causes.

  • Damaged exhaust.

A clogged exhaust channel could be one of the reasons a chainsaw won’t spin. Some signs of a damaged exhaust or muffler are slow acceleration, strange sounds, etc.

  • Worn out clutch pads

Make sure the stop lever is turned off. The chain will not turn if the stop lever is engaged. Replace the clutch assembly if the clutch pads are worn out. To allow the chain to revolve, the clutch pads engage the clutch drum. Unscrew the screws to remove the muffler.

My Husqvarna chainsaw won’t start when hot.

It’s not strange to see your chainsaw stop working when hot, especially when the spark plugs need to be replaced. Your Husqvarna chainsaw won’t start when it is overly hot, largely because there is a hindrance in the gas flow into the engine or an issue with the spark.

Once you spark it, the chainsaw will start working. It’s also crucial to inspect the carburetor. Usually, a damaged carburetor is capable of preventing your chainsaw from starting.

For the chainsaw to start and function smoothly, ensure that the fuel pump, carburetor, air filter, muffler, and bad spark plug are in order.

When you know that the air filter is clogged, it can make the chainsaw not start. Then, you must replace it when it is bad. The function of the chainsaw’s air filter is to prevent airborne pollutants from entering the combustion chamber.

Take a proper look at the spark plug. Check if it is clogged with dirt or oil. In the event that the spark plug produces a spark but the chainsaw won’t start when hot, there is probably a spark plug gap.

That’s the airspace between the ground electrode and the center electrode. The gap won’t allow the spark to conveniently ignite the fuel and air mixture if the gap is too tiny. It may be difficult for the spark to span the gap if it is too large.

Over time, the electrodes will fail as a result of the frequent arcing of sparks. This can cause the gap to widen, making it harder to start your chainsaw.

Husqvarna chainsaw won’t start after refueling

Some Husqvarna owners have raised concerns over their Husqvarna chainsaws not starting after refueling. If you’ve experienced that, there are recommended tips on how to stop that from happening.

Check or replace your fuel filter and primer bulb. When the engine is started from a cold start, the priming bulb, which is positioned in the fuel line between the gas tank and the engine, is used to fill the carburetor with fuel.

Husqvarna chainsaw will not oil chain

If you find that your Husqvarna chainsaw is not oiling, it could probably be that it lacks lubrication. Another factor causing it could be that the holes are blocked, which would require you to clean both holes.

Check to see if there is oil in the oil fill tank. Cleaning inside the drive sprocket cover is a good idea. Dislodge the bar and chain assembly carefully by releasing the chain tension.

Remove dirt and debris from behind, within, and behind the case, as well as behind the bar. With a whisker wire, you weave through the ports and channels on the bar.

Husqvarna chainsaw bogging down when cutting

A chainsaw bogging down when cutting could be triggered by some circumstances, but it is not a big issue and is not difficult to fix.

Husqvarna chainsaws bogging down when cutting is experienced when using the chainsaw under load, which is usually due to insufficient air circulation. A blocked air filter, dirty fuel lines, or carburetor in the chainsaw are common known causes.

The Husqvarna chainsaw will not prime.

If your Husqvarna chainsaw will not prime, the bulb itself could be the reason for the primer’s failing issue. When the priming bulb stops operating, it could be due to a problem with the bulb, the fuel lines that feed the bulb, or both. When they harden and fracture, they let air in, making it impossible to effectively pull fuel into the carburetor.

Husqvarna chainsaw: simple maintenance tips

To have your Husqvarna chainsaw last a long time, there are measures to take. Ideally, if you care for your Husqvarna chainsaw, it is bound to stay for a longer time.

  • Check the quality of the gasoline and make sure it’s the right blend; if it’s not, replace it with a known mix.
  • Check for clogging in the fuel filter.
  • Make sure the carburetor is set correctly (including the idle adjustment).
  • Check for wear or carbon buildup on the spark plug electrode and adjust the gap.
  • If fitted, visually inspect the muffler spark arrestor screen, hoses, manifold, and cylinder base gasket for leaks.
  • If compression appears to be inadequate, remove the exhaust to inspect for piston seizure or ring damage.
  • Make sure to wipe any spilled oil from the lawnmower or the engine’s side. Fill the engine with oil by slowly pouring around 16 ounces of oil into the oil fill spout.
  • It is advised that you change your oil after 50 hours of use.


Your Husqvarna chainsaw can have a loss of power due to a combination of factors. Check the mower’s start system to know where the fault is from.

Also, if the grass is too overgrown, your Husqvarna mower may have trouble cutting it. When the blade tries to push through, engine power is lost.

Replace all damaged parts, and then adjust the wheels as needed if you’re cutting tall grass with a Husqvarna push mower.







Scroll to Top