How do I prepare my Petrol Strimmer/Brush Cutter for Winter

           This video is for the CDB30 grass trimmer, however it still applies in principle to other 2-stroke engines.

Quick Answer

Proper winter storage prevents fuel degradation, carburettor blockages, and starting issues. To prepare your petrol strimmer or brush cutter, you must empty the fuel tank, run the engine until the carburettor is empty, and store the machine in a dry environment.

⚠️ Safety Notice

Before starting:

• Switch off the engine and allow it to cool completely.
• Work in a well-ventilated area away from ignition sources.
• Drain fuel carefully, as petrol is highly flammable.
• Wear suitable protective gloves.

Why Winter Storage Matters

Leaving fuel in your machine over winter can cause:

• Fuel degradation and varnish build-up
• Blocked carburettor jets
• Difficult starting in spring
• Poor engine performance

Following the correct storage procedure helps maintain engine reliability.

Winter Storage Procedure

Step 1 – Empty the Fuel Tank

Drain all remaining fuel from the fuel tank.

Fuel left inside the tank over long periods can deteriorate and form deposits, especially in cold conditions where condensation may occur.

Step 2 – Empty the Carburettor

1. Start the engine.
2. Allow it to run until it stops naturally.

This ensures that the carburettor is cleared of remaining fuel.

Step 3 – Clear Remaining Fuel

1. Press the primer bulb several times to circulate any remaining fuel.
2. Attempt to restart the engine.

If the engine does not start, the fuel system has been sufficiently emptied for storage.

Step 4 – Store the Machine

Store your strimmer or brush cutter in a:

• Clean
• Dry
• Well-ventilated location

Where possible:

• Keep the machine out of direct sunlight
• Avoid damp or humid environments
• Store off the ground to prevent moisture exposure

Before Using the Machine Again

At the start of the next season:

• Inspect the machine for damage or wear
• Check fuel lines and primer bulb condition
• Fill with fresh, correctly mixed 2-stroke fuel
• Prime and start the engine as normal

Frequently Asked Questions

Why do I need to empty the carburettor for winter storage?

Fuel left in the carburettor can evaporate and leave deposits that block internal jets, preventing the engine from starting.

Can I store fuel in the tank over winter?

No. Fuel can degrade over time and cause starting and performance issues.

Do I need to clean the machine before storage?

It is recommended to clean the cutting head and remove debris to help prevent corrosion and wear.

What happens if I forget to winterise my strimmer?

You may experience hard starting, poor running, or a blocked carburettor that requires cleaning or replacement.