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Can someone tell me if there is a check valve in the clutch filler adapter? It seems that the process of removing the grub screw, connecting/removing the bleed screw and then refitting the grub screw would not be possible otherwise.

Yes, there is a check valve behind the grub screw. However, I've heard it's easiest if you remove the check valve completely and put the bleeder in and leave the bleeder there permanently. If you go that route, you'll also want the rubber cover for the bleeder (and its tether requires that the cover be installed at the same time as the bleeder).

I had this exact same question last week and was happy to find CycleRob's part number for the correct bleed screw in this post http://r1150r.org/board/viewtopic.php?f ... utch+bleed

or here it is Clutch bleed nipple P/N 34 21 2 330 310 -- $7.40

You screw the bleed screw into the end of the existing check valve, then bleed the clutch just like the brakes. The only slight difficulty is you gotta use two wrenches since the bleeder is on the end of a hose.

Edit: I think I may be wrong about leaving the check valve in place. I don't know really but I just now stripped the threads on the check valve so I took it off and put only the bleeder valve on and it works better because you don't have to tighten it so tight to make it seal. So I still don't really know if I was right or wrong but there it is.

VintageDirt wrote:Edit: I think I may be wrong about leaving the check valve in place. I don't know really but I just now stripped the threads on the check valve so I took it off and put only the bleeder valve on and it works better because you don't have to tighten it so tight to make it seal. So I still don't really know if I was right or wrong but there it is.

It's best to remove the check valve and throw it as far as you can. Then put the bleed screw directly on the end of the clutch bleed hose. Cap it and leave it for next time.