I've used one of those for years. What I do is to just suck out 4-8 oz. of fluid per bleeder (until it runs clear) and as you get to the end of the cup in the vacuum kit, slowly close the bleeder with a high vacuum still on it. You can also see the differerence betweeen the air pulling out of the lines vs. the small bubbles that might leak around the bleeder threads. Just make sure to top off the m/c after every wheel is done.

r.c.brown@ieee.org
TruckEditor@tlca.org
Project: 4Crawler
4Crawler OffRoad - 4x4Wire discount code