Yep. Just what the old Canuck said...

I bought one of these:


...and it's turned out to be the coolest/handiest tool I own. Using compressed air and a little venturi vacuum generator, it, as stated, creates a vacuum one uses to suck liquids from...anywhere. If you can't drain a reservoir, you can use this to empty it.

You may be able to borrow a similar unit from a local autoparts store?

Or do it the old, uncool way!

There are also replacement bleeder screws with built-in check valves. For doing it yourself, with no air sucked back up the lines!

Google "Speed Bleeder". Amazon carries them.