I've always used a vaccum bleeder to refill empty brake and clutch lines. Very quick and haven't had a problem. Just pour the fluid into the reservoir and pull it out bleed screw.
I just installed a motowheels slave cylinder and used the same procedure, except for pumping the lever to fill the cylinder, then pushing the cylinder in to get the trapped air into the line (where the vaccum sucks it out.)
I just installed a motowheels slave cylinder and used the same procedure, except for pumping the lever to fill the cylinder, then pushing the cylinder in to get the trapped air into the line (where the vaccum sucks it out.)
