How do I replace the fuel lines on my Petrol Strimmer/Brush Cutter
Modified on Thu, 25 Jun at 12:30 PM
This guide explains how to replace the fuel lines on your petrol strimmer.
Note: These instructions are based on the CDB models but should be applicable to most petrol strimmer and brush cutter models with a similar fuel system, always check instruction manuals
Replacing the Fuel Lines
Step 1 – Feed the Fuel Line Through the Tank

- Locate the fuel line opening in the fuel tank.
- From the outside of the tank, feed the new fuel line through the hole.
- Continue pulling the line through until a small section protrudes from the fuel filler opening.
Step 2 – Fit the Fuel Filter
- Through the fuel filler opening, locate the end of the fuel line.

- Gently pull enough of the line through to provide access.
- Attach the fuel filter securely to the end of the fuel line.
- Once fitted, pull the fuel line back into position so that the filter sits freely inside the fuel tank.
- Then pull the fuel line back from the outside and attach it to the carburettor inlet:
Step 3 – Check the Installation
- Ensure the fuel line is seated securely in the tank opening.
- Check that the fuel filter can move freely within the tank and reach the fuel during operation.
- Verify that there are no kinks, twists, or damage to the fuel line.
- Inspect all connections to ensure they are secure and fuel-tight.
Final Checks
Before starting the machine:
- Check for any signs of fuel leakage.
- Ensure all fuel lines are correctly routed.
- Confirm the fuel filter remains attached and positioned inside the tank.
- Refill with the correct fuel mixture if required.
Your petrol strimmer should now be ready for use.
Tip: If you are replacing multiple fuel lines, it can be helpful to take a photograph of the original routing before removal to ensure the new lines are installed correctly.
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