[rotorwrench]

If the master is firewall mounted with swing pedals, they bleed easy. If it's under the floor, not so much. High mounted will almost bleed themselves if the bleeder nipples are opened up in proper sequence and just let the fluid flow a bit by gravity for each one starting closest then on to farthest away. Low mounted usually required a hand operated vacuum pump and a jar to catch the fluid. I put teflon tape on the nipple threads for the loosey goosey ones. I've been doing them by myself for years and have had good results.

As was mentioned, the master can be blocked to pressure test but a person needs the correct fittings to do that. They have banjo fittings on some and the tubes can be the inverted flair types.