FreeSpirit said:

Remove the front wheel.
- Steer inwards so the caliper is pointing outwards & is easier to work on.
1. Disconnect the brake pipe bands from the support.
2. Disconnect the electrical connection for the brake pad wear sensor.
3. Undo the bolts fixing the brake caliper. (14mm Hex)
The bolts fixing the brake caliper are self-locking and should always be replaced each time they are undone or loosened.
4. Remove the brake caliper without disconnecting the brake pipes.
The pistons will have to be returned to their fully retracted position in the caliper so the new thicker pads can be fitted. There are special tools but "G" clamps can be improvised instead. - The master cylinder cap should be loosened to allow for the overflow of fluid when resetting the caliper pistons. Don't forget to retighten cap on completion.
The brake pads should be replaced if the friction material is less than 1.5 mm thick.
- Place the brake pads in position.
- Place the brake caliper in position.
- Tighten the bolts fixing the brake caliper.
- Connect the electrical connection for the brake pad wear sensor.
- Connect the brake pipe bands to the support.
- Refit the wheel. Repeat operation for the opposite side caliper.
- Pump the brake pedal a few times to seat the pads in & Check that the brakes are working.

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