R51/3 clutch adjustment screw

[Vegtamr]

Whereas a new cable and cable and careful adjustment at both ends has my R51/3 shifting (relatively) smoothly, I am having issues with the adjuster screw (at the throwout arm) backing out over the course of a ride. The various parts fiches seem to show a locknut (#16 in the diagrams) similar to what I'm familiar with in my later bikes, but there is not a corresponding part number or description. My bike has no such locknut. Should there be one, and if so can someone provide the dimensions?

Thanks

[Worleybird89]

According the the Salis Parts site: Part # 07119921056 Nut M6

https://www.bmwclassicmotorcycles.com/p ... rt-one-26/

It might be easier to go to a good hardware store with the bolt in hand and find a good quality nut that fits it.

[Micha]

Right. Just note that a flat one is requiered there.
The handlebars levers have the same one.
If you don't find a flat one - take a regular one with a std. M6 bolt and sand it down. The bolt will be used to clean the nut's thread after sanding.

[vechorik1373]

The dog point adjuster bolt and the thin jam nut are both available new.
21 52 1 020 116 is the dog point bolt
07 11 9 921 056 is the thin, 6 mm x 1.0 jam nut.

[Vegtamr]

Thanks Vech! I'll look around and see who has them.

[wa1nca]

Any good hardware store should carry a 6x1.0 jam nut