When bleeding the brakes on my BMW cycle I have found that if I use a oil mixer, available at Kmart or any marine store(used for mixxing 2 cycle oil) and fillit with brake fluid attach a hose to the pionty end, it looks like a needle used for a giant, and then attach the hose to the bleed nipple. Open nipple and force the new fluid through the system. Of course you have to make room initally buy removing fluid from the resivour. Hope this helps.
JOhn