Join Date: Nov 2008
Location: Morgan Hill, CA, USA
I Ride: Cafe Racer, Commuter, a Dirty one, and a Land Speed Racer.
I flush 'em backwards. both at work, and on the bike. Go get yourself two of the big plastic syringes and about a foot of hose. you can pick 'em up at most hardware stores. I'm talking about the big plastic ones, not the ones you use to shoot your black tar heroine, get those for free from the needle exchange program at your local rehab or hospital.
Put a couple inches of hose on the end of each syringe. One will become you're "fresh clean new syringe" and one will be a dirty and infected syringe (keep this one out of your arm...).
Suck all the fluid out of the reservoir with one syringe, and put it into a disposable container.
Suck new fluid into syringe 2, and attach to the bleeder.
Crack the bleeder, and slowly but firmly push the fluid through the caliper, and you'll see the dirty, old fluid move into the reservoir.
Close the bleeder screw.
Repeat until reservoir is filled to the proper level with new, clean fluid.
This accomplishes a few things: Number one, people tend to forget about the reservoir when bleeding, and end up sucking air into the system when they're trying to get the air out, this prevents that all together. Number two, you're pushing all the nasty garbage up and out, instead of down and through every single piece of rubber that it could potentially destroy. Number three, you can do it by yourself, it gets kind of tricky to bleed your left caliper while squeezing the brake lever on the bike when you're all alone. doing it this way means your girlfriend can stay on the couch watching Real (spoiled) house wives of wherever, instead of bitching about having to get up and come outside for three minutes.