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RoboRider
03-20-2011, 10:36 AM
I see there is no tech forum for F800s. Anyone have a link to a brake fluid flush for this bike?

MCMXCIVRS
03-20-2011, 11:27 AM
Ther's nothing really special involved to do it. It's pretty much a standard motorcycle ABS system.

Not sure if it has the same front resevoir as the ST and GS, if so, you need a special tool to do the cap removal. I've heard it can be done without but it tricky. There's a coulpe of locking tabs that prevent the lid from unscrewing, sort of like a childproof medicine bottle lid. The tool looks basically like just a large thin open end spanner. It slip into the gap below the lid and holds the tab in so the lid can be turned to unscrew it. I made my own from a piece of aluminum sheet, they can be purchased premade too.

After that, just use whatever method suits you to do the fluid flush.

PGlaves
03-20-2011, 11:58 AM
Ther's nothing really special involved to do it. It's pretty much a standard motorcycle ABS system.

Not sure if it has the same front resevoir as the ST and GS, if so, you need a special tool to do the cap removal. I've heard it can be done without but it tricky. There's a coulpe of locking tabs that prevent the lid from unscrewing, sort of like a childproof medicine bottle lid. The tool looks basically like just a large thin open end spanner. It slip into the gap below the lid and holds the tab in so the lid can be turned to unscrew it. I made my own from a piece of aluminum sheet, they can be purchased premade too.

After that, just use whatever method suits you to do the fluid flush.

It just takes two people. One can press both tabs inward with a couple of little screwdrivers while the second turns the cap. Voni and I did it last week. :)

RoboRider
03-20-2011, 06:40 PM
Thanks guys. I didn't know if it had a separated system like the whizzy RT. And the next to useless Haynes manual says to take it to a dealer since you need the BMW diagnostic tool to do it. When did Haynes manuals become so brain dead? I have one for my 1989 Chevy that is great, even describing how to build special tools. Now, they are just glorified manuals on how to change the oil....

jimbob59
03-21-2011, 06:16 AM
See the first append on this thread for a pic. of the BMW-approved tool,
see the second append for an "improvised" tool that works well, cost nothing and doesn't take up as much space in the tool roll :laugh

http://f800riders.org/forum/showthread.php/40630-F650-800GS-Brake-Reservoir-Cap-Removal-Tool