Husqvarna Leaf Blower Will Not Start Until the Choke Is Engaged

When the engine isn’t receiving enough fuel or is getting too much air, a Husqvarna leaf blower will only function with the choke on. This is the sole operating mode.

This might be the consequence of stale gasoline, a filthy carburetor, a faulty carburetor gasket, a stopped fuel vent, a limited fuel line, a plugged air filter, or a perforation in the fuel line. Other potential causes include:

Wait for the engine to cool down and for all of the moving components to cease moving before beginning any repairs. Take off the spark plug boot, and be sure to observe any other safety measures that are included in the operator’s handbook that came with your Husqvarna.

outdoorstip Husqvarna Leaf Blower

These Are the Top 6 Reasons Why Your Husqvarna Leaf Blower Won’t Start Without the Choke

1. Using Outdated Fuel in Your Husqvarna Leaf Blower

The usage of stale gas in your leaf blower is often the primary factor that contributes to the formation of fuel limits in your blower. It is possible that you will need to use the choke in order to adjust the ratio of gasoline to air that is necessary in order to keep the blower working when there is not enough fuel flowing to the engine.

The vast majority of gasoline is composed of ethanol, which, over time, may cause varnish and other sticky deposits to form in the fuel system. In order to prevent issues from arising in the fuel system as a direct consequence of gas, it is essential to make use of new gasoline that has a low percentage of ethanol.

Two-cycle leaf blowers manufactured by Husqvarna need a combination of oil and gas with a ratio of 50:1. In order to properly operate a premium 2-cycle engine, unleaded gasoline with an octane rating of at least 89 and an ethanol percentage of no more than 10% must be blended with the oil.

Find out more about how to take care of your Husqvarna and what kind of gasoline should be used in it by consulting the manual. The Husqvarna Leaf Blowers Utilize This Specific Kind of Gasoline and Oil Mixture

SOLUTION: Clean out your leaf blower’s tank of any stale fuel. To maintain the gas’s stability, clean the fuel system, and cut down on moisture content, you should add new gasoline that contains an additive such as Sea Foam or STA-BIL.

2. A Blockage or a Puncture in the Fuel Line of the Husqvarna Blower

In the case that there is a restriction in the fuel line as a consequence of old gasoline or dirt that has built up in the fuel line, you may be necessary to use the choke. It’s also conceivable that air got into the fuel system through the pipes that deliver the gasoline.

Broken or punctured gasoline lines may generate a vacuum that pulls more air into the fuel system, which might cause it to become polluted. Because of this, the choke has to be engaged in order to limit the amount of air that flows into the air intake. This is done in order to prevent the engine from overheating.

SOLUTION: It is necessary to remove and repair any gasoline line that is blocked, damaged, or broken before installing a new fuel line. It is important to ensure that the gasoline lines are linked firmly to the fuel system in order to prevent more air from being sucked through the lines.

3. A Husqvarna Leaf Blower That Has Its Fuel Filter Clogged

In order to prevent debris from getting into the fuel system of the Husqvarna blower, a fuel filter is installed. When it is not replaced on a regular basis and gets clogged with dirt and debris, it has the potential to limit the flow of gasoline.

To prevent having to deal with this issue, it is highly recommended that you change the filter once a year. If you put unclean gasoline in the tank, you will have to replace it more often than normal.

SOLUTION: Replace a blocked fuel filter. When it comes to Husqvarna blowers, the fuel filter is housed inside the fuel tank itself. Before removing the gasoline tank cap, clean the area surrounding it with a damp cloth to prevent dirt from dropping into the tank.

You may “fish” the filter out of the tank using a clean wire that has been twisted into a hook by hooking the wire around the gasoline line and then dragging out the filter. After removing the old filter that was attached to the end of the fuel line, reattaching the new fuel filter is the next step.

Take care not to misplace the retaining right, as this component helps to ensure that the fuel line remains attached to the filter. The gasoline filter should be installed within the fuel tank. Replace the gasoline cap in the tank.

4. A Husqvarna Leaf Blower with a Defective Carburetor Gasket

There is a gasket that is situated behind the carburetor, and due to its proximity to the component, it runs the risk of being damaged over time. Because of a defective gasket, the carburetor will not be able to form an effective seal, which will result in air being let into the system.

Since the Husqvarna blower is designed to operate on a lean mixture of air and gasoline, the choke will need to be engaged in order to restrict the amount of air that enters the combustion chamber. This will prevent the blower from running lean, which would occur if a higher concentration of air was combined with gasoline than what was needed by the engine. This will prevent the blower from running lean.

SOLUTION: To get access to the carburetor, first remove the linkages and bolts that are joining it to the engine. Take the carburetor and the gasket off of the engine.

On your Husqvarna, replace the old gasket with a new one, and then reconnect the carburetor, the bolt, and the linkages. When the carburetor is detached from the leaf blower, you should see if it needs to be cleaned.

Remember that after the carburetor has been removed so that the gasket can be inspected, you will need to replace it regardless of whether or not it is damaged. Have a replacement gasket available.

5. A Husqvarna Leaf Blower That Has A Unclean Carburetor

The Husqvarna carburetor’s job is to control the quantity of gasoline that is combined with air to create combustion, which is necessary for the leaf blower to start and continue operating. The accumulation of varnish and deposits in the carburetor might cause it to stop functioning as intended, which prevents it from delivering gasoline to the engine.


If you have any mechanical ability, you should have no problem taking care of the cleaning of your carburetor. To properly clean the carburetor, it must first be disassembled, and then a carburetor cleaner must be used in order to remove deposits that have been left behind by previous gasoline.

If, after being cleaned, the carburetor still does not perform properly, you will either need to repair it or buy a new carburetor to replace it. You may also get help cleaning or replacing the carburetor from the dealership that sells Husqvarna products or small engines.

6. A Husqvarna Leaf Blower with a Blocked Fuel Tank Venting System

The fuel tank vent is another component that has the potential to impede gasoline flow. In the majority of Husqvarna leaf blowers, this vent may be found within the fuel cap. When there is debris in the vent, it prevents air from circulating freely through the cap.

Inside the gasoline tank, a vacuum will develop, which will prevent fuel from leaking out of the tank. Put your leaf blower on a level surface to prevent gasoline from leaking out while you test to see whether the problem is with the fuel cap. This will help you evaluate whether or not you need to run your Husqvarna with the choke engaged.

SOLUTION: Remove the cap while letting your blower to run. Set the choke to the off position to assess whether or not the blower will continue to operate with the choke off. If it does, your fuel cap is most likely the issue. Replace the gasoline cap with a new Husqvarna cap.