The proper way is to remove the booster reserve, fill the master cylinder reservoir with brake fluid, connect the front brake lines to the master cylinder, loosen the front brake line at the master cylinder to purge all air from the cylinder, bleed the master cylinder at the rear air inlet connections in the same manner as with the front connections, remove the bleeder cap and loosen the bleeder screw to purge the air from the cylinder, locate the front bleeder caps, and then check the brake pedal for sponginess.
By BobGM Specialist
28/10/2022