So my 92 K75 is doing some strangeness!!! Sometimes in 1st gear/ neutral, the RPMs will fly way up like the throttle is wide open even in the "down" position. I look at the fine tuning adjustment screw where the throttle cable meets the engine and its down....if I push down on it during the peak of the throttle gain, it seems to move down just a few mm and in 5 sec or so usual to a normal Idle.

 It also will choke out when downshifting with no throttle as I'm slowing to stop every now and then. If I hold the throttle open with the clutch in....I can cheat it from choking out. But, obviously not ideal for long term....thoughts?

I have changed the throttle cable out and it could be the original. Doesn't seem to be sticking and returns to the bottom pretty easily.

pretty weird behaviour

is it a motronic type computer ...or the standard for the older type ...jetronic ?

you may have to delve into the chain /cam drive in the throttle bar-cable  assembly ...and clean it up ...at a guess ....are you sure its not fitted with a throttle stop type screw that holds the movement of the grip somewhat ?

 a pic or two would certainly help in the diagnosis and repair

Sounds to me a bit like a very lean situation occuring, see ing as it appears to be on all 3 cylinders have a look around and try spraying some carby cleaner and see if the revs change which means the flamable liquid is getting in through the leak.
All the K75 have L Jetronic and so the Mass Air Flow sensor or Barn door type which are sensetive to leaks.

It's the L Jetronic like Rick said...I removed the cruise control screw underneath the throttle grip when I put the clubman bars on. I will return it just in case. My original post I mistyped say I have changed the throttle cable, but I Havent.

I put a lot of grease to lube up the chain at the end of the cable when switch the bars. Also the choke lever is completely unresponsive when moved through the positions. 

I will make a video ASAP so it's easily seen and heard

hmmm this sounds interesting

If you haven't changed the throttle cable, then that's what I'd do before anything else.

MikeisonTV wrote:.

I put a lot of grease to lube up the chain at the end of the cable when switch the bars.

Be sparing with the grease here. Give this whole area a good cleaning out first then just a light film of grease

One thing it may pay to double checkis that the bevel gears in the handpiece are matched up correctly, I recall having to redo my K100 after I put it together one tooth out and it didnt return properly.
When you put it like this it sounds a bit crazy to a non BMW person.
Have you checked the timing of the throttle grip gears. I can just see it now the Jap bike guys walking away saying those things are too wierd for words.

RicK G wrote:
When you put it like this it sounds a bit crazy to a non BMW person.
Have you checked the timing of the throttle grip gears. I can just see it now the Jap bike guys walking away saying those things are too wierd for words.

And greased the chain..


But its a Shafty????? you hear them say

Yep, sounds about right