I dont bother with a mighty vac
NOTE: When bleeding the rear brake system, bleed the right front caliper first, then the rear caliper.
Remove the bleed valve dust cap. Connect one end of a bleed hose to the bleed valve and put the other in a container.
Squeeze the brake lever or pedal, open the bleed valve 1/2 turn, then close the valve just before the lever or pedal reaches the end of its travel.
Release the brake lever or pedal slowly, and wait several seconds after it reaches the end of its travel.
Repeat until no more bubbles appear in the fluid coming out of the caliper.
Fill the fluid reservoir to the upper level mark.
Install the diaphragm and reservoir cover.