Leaf Blower

How to clean or replace an air filter on a leaf blower

A clean air filter helps your Husqvarna leaf blower run smoothly, maintain full power and use fuel efficiently.

If the air filter becomes dirty or clogged, your blower may lose power, smoke excessively or become difficult to start.

Quick answer

To clean your leaf blower air filter:

  1. Remove the air filter cover
  2. Take out the filter
  3. Remove dirt and debris carefully
  4. Clean or replace the filter if needed
  5. Reinstall the filter securely

A dirty air filter is one of the most common causes of reduced blower performance.

Safety first

  • Turn off the blower and let it cool completely
  • Disconnect the spark plug on petrol-powered models
  • Remove the battery on battery-powered models
  • Wear protective gloves when handling filter oil

Why air filter maintenance matters

The air filter prevents dust and debris from entering the engine.

If the filter becomes dirty or clogged, it can cause:

  • Loss of power
  • Poor throttle response
  • Increased fuel consumption
  • Problems starting up
  • Excessive smoke

Regular cleaning helps maintain airflow and engine performance.

When should you clean the air filter?

Check and clean the air filter if your blower:

  • Loses power during use
  • Runs rough or unevenly
  • Produces excessive smoke
  • Becomes difficult to start
  • Has visible dirt on the filter

For frequent use, inspect the air filter regularly during the season.

How to clean the air filter

Learn how to clean the air filter

Remove the air filter cover

  • Locate the air filter housing on the blower
  • Open or remove the cover depending on your model

Remove the air filter

Carefully remove the filter from the housing.

Check for:

  • Dirt buildup
  • Damage or tears
  • Excess oil or moisture

Remove loose dirt

  • Gently tap the filter against a hard surface
  • Use a soft brush to remove remaining debris

Avoid damaging the filter material.

Clean the filter

Foam filters

  • Wash with warm water and mild detergent
  • Rinse thoroughly
  • Allow the filter to dry completely before reinstalling

Paper filters

  • Do not wash with water
  • Gently clean with a soft brush only
  • Replace if heavily dirty or damaged

Apply air filter oil—if required

Some foam filters require air filter oil.

Bottle method

  • Place the filter in a plastic bag
  • Pour air filter oil onto the filter
  • Knead the bag to distribute the oil evenly
  • Squeeze out excess oil before reinstalling

Spray method

  • Apply spray oil evenly across the filter surface

Reinstall the filter

  • Make sure the filter is fully dry and correctly positioned
  • Reattach the air filter cover securely

When should you replace the air filter?

Replace the air filter if:

  • It is damaged or torn
  • Dirt cannot be removed
  • The blower still performs poorly after cleaning
  • The filter becomes heavily clogged repeatedly
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