Disconnect the wire terminal from the "negative" terminal of the battery.
Remove the left front wheel.
Using the "10" head, unscrew the bolt securing the filler neck of the washer reservoir.
Remove the filler neck of the tank.
We take out two pistons and unscrew the four screws securing the fender liner (see Replacing a bulb in a fog lamp).
Folding the front part of the fender liner
disconnect the hose from the washer check valve (fender removed for clarity).
By pressing the lock of the wire block, disconnect the block from the washer pump.
Disconnect the hose from the pump fitting.
With a "10" head, unscrew the nut and bolt of the tank.
With a "10" head, unscrew the bolt of the lower tank mount.
We remove the tank with the pump.
We remove the washer pump and remove the sealing sleeve from the reservoir hole.
We replace the torn or lost elasticity sleeve with a new one.
Install the washer pump in reverse order.