How to drain water from the clutch hydraulic circuit

Remove the cap to expose the bleed valve (3).
Connect a clutch circuit bleeding tool to the clutch slave cylinder bleed valve (3).

Remove the cover (1) with the membrane from the clutch fluid reservoir (2).

Open the bleed valve and pump with the bleeding tool until no more fluid flows out.
If you do not have a bleeding tool available, attach a transparent plastic tubing to the bleed valve (3) and insert the other end of the tubing in a container for old clutch fluid placed on the floor.

Unscrew the bleed valve by 1/4 of a turn.
Operate the clutch lever until all the fluid has been drained.

To help fully drain the circuit, it is recommended to remove the clutch slave cylinder.
Undo the screws (4) and slide out the clutch slave cylinder (5).

Push the internal piston to force out all the fluid from inside the cap