How do I change the strimmer head to a brush cutter blade

This guide explains how to change your petrol brush cutter from a grass trimmer head to a brush cutter blade, and how to convert it back again.

Please follow the instructions for your specific model.

Changing from Grass Trimmer to Brush Cutter

Step 1 – Lock the Gear Head

1. Align the slot in the flanged washer with the slot in the gear head.
2. Insert the supplied hex wrench through both slots to lock the gear head and prevent it from rotating.

Step 2 – Remove the Trimmer Head

1. Unscrew the grass trimmer head assembly by turning it clockwise.
2. Remove the cupped washer and flanged washer.
3. Retain these parts for installing the brush cutter blade.

Step 3 – Install the Brush Cutter Blade

1. Place the flanged washer onto the gear head shaft with the hollow side facing the gear head.
2. Position the brush cutter blade onto the flanged washer.
3. Ensure the raised centre of the washer passes through the hole in the blade and that the blade sits flat.

Step 4 – Fit the Retaining Hardware

1. Install the cupped washer with the raised centre facing away from the blade.
2. Fit the blade nut onto the gear head shaft.

Step 5 – Secure the Blade

1. Insert the hex wrench through the locking slots again to prevent rotation.
2. Tighten the blade nut by turning it anti-clockwise (left-hand thread).
3. Use the supplied wrench to tighten the nut securely.

Changing Back to Grass Trimmer

To convert back to a grass trimmer:

1. Remove the blade nut, cupped washer, and blade.
2. Refit the flanged washer.
3. Screw the trimmer head back onto the shaft by turning it anti-clockwise.
4. Tighten securely before use.

Follow the installation steps above in reverse order.

Changing from Brush Cutter to Grass Trimmer

Step 1 – Remove the Brush Cutter Blade

1. Hold the flange in place using an Allen key.
2. Unscrew the retaining nut by turning it clockwise.
3. Remove the blade.
4. Remove the shield washer(s) and retain them for reassembly.

Step 2 – Fit the Trimmer Head

1. Continue holding the flange with the Allen key.
2. Screw the trimmer head onto the shaft by turning it anti-clockwise.
3. Tighten until fully seated.
4. Remove the Allen key.

Refitting the Brush Cutter Blade

To reinstall the blade:

1. Remove the trimmer head.
2. Refit the shield washers in the same order they were removed.
3. Position the blade correctly on the shaft.
4. Hold the flange with the Allen key.
5. Install and tighten the retaining nut by turning it anti-clockwise.
6. Ensure the blade is secure before operating the machine.

Important: Keep the upper flange locked with the Allen key while tightening the blade nut.