Hi all. This topic has been covered before, but photos are no longer viewable...
The toolbox for my WM21 has the rear strap, a single hole in the top, and a hole inside the box toward the front that appears to line up with the mudguard. (The last bit is a guess, because I don't have a mudguard yet.) There's no tab on the front-facing side of the box (and no evidence of one ever being there).
Looking at photos I can find, the top fixes to a clip that fits around the frame tube. I assume that the rear strap fixes to a similar clip at the bottom? Does the front bolt through to the mudguard,though? The absence of a front tab is vexing me.
The top hole bolts to a P clip as you say. The front tab with slot bolts through a hole in the mudguard. The rear strap bolts to the back of the silencer mounting lug. Ron
Thanks for this Ron. I'm still foxed about why there's no bracket on the front of my toolbox. I thought it may have bolted through the back to a valanced mudguard, but Henk's M21 has the front bracket...