The lever on the master cylinder has to be at zero. So I adjusted linkage so that there was absolutely no pressure. Crack bleeder then engage fully then close bleeder. Repeat 3-4 times. After doing both sides then pump several times fast fully engage and just barely crack bleeder and close as fast as you can. If you loose tension on the pedal you did it to slow and sucked in air and have to start all over. Do that to both sides and there bled. Now after that the pads wouldn’t move far enough to make good contact on the rotor so then I had to readjust the linkage and then they worked great. The main problem I noticed is those are designed for go carts. Well go cart pedals have a lot more throw than the brake pedal on a four wheeler. So you have to bleed at one linkage adjustment then once the air is out you have to readjust so the pads travel far enough to make good contact.