I have been replacing my fluid from the "bottom up" for about 10 years now.... I always do it when replacing rubber hose with "covered" SS hose... All you need is a old style hand oil pump, some clear hose that will fit the nipple and a clamp for the end of the oil pump... remove the M/C cover and start pumping away... when you get BF in the M/C, change to the other side caliper and do the same thing and fill to the "line"... Oh, and have the brake lever pulled to the grip...