My Electric Grass Trimmer is having issues with the speed

Quick Answer

If your electric grass trimmer is running slower than normal or struggling to cut, the issue is usually caused by blocked air vents, incorrect line type, or a poorly wound spool. Basic cleaning and setup checks often restore normal performance.

Important: Always switch off and unplug the trimmer before inspecting any parts.

Before You Start

Before carrying out any checks:

• Switch the grass trimmer off
• Disconnect it from the mains power supply
• Ensure the cutting head has fully stopped
• Place the trimmer on a stable surface

Important: Never inspect or adjust the spool while the unit is connected to power.

Possible Causes and Basic Checks

1. Air vents blocked

Check that the air vents are clear of:

• Dust
• Dirt
• Grass clippings
• Debris

Blocked airflow can reduce motor efficiency and cause the trimmer to slow down.

2. Cutting line type

Ensure you are using the correct trimmer line for your model.

• Refer to your user manual for exact specifications
• Most models typically use 1.2mm line, but this can vary

Using incorrect line thickness can reduce performance and increase strain on the motor.

3. Spool condition

Check the spool to ensure:

• The line is wound evenly
• There are no tangles or overlaps
• The line feeds correctly when in use

Incorrect winding can restrict line feed and reduce cutting efficiency.

4. Try the spare spool

If your product includes a spare spool:

• Fit the replacement spool
• Test the trimmer again

This helps determine whether the issue is related to the original spool.

If the Issue Persists

If the speed problem continues after completing the checks above:

• Stop using the product
• Contact our Technical Support Team
• Provide your model number and a description of the issue

Further inspection may be required.

Important Information

• Always use the correct line type for your model
• Keep air vents clean and unobstructed
• Ensure the spool is correctly installed and wound
• Do not use damaged or unsuitable line

Frequently Asked Questions

Why is my grass trimmer running slow?

It is usually caused by blocked air vents, incorrect line type, or a poorly wound spool.

Can the wrong line affect performance?

Yes. Incorrect line thickness or type can reduce cutting efficiency and increase motor load.

How often should I check the spool?

Check the spool regularly, especially if the trimmer performance changes during use.

What should I do if cleaning does not fix the issue?

If the issue continues after all checks, contact Technical Support for further assistance.