Boxerworks.com

Hi, I have a 1977 R100s with a fuel cap that will not come off. Any help with this is very much appreciated. I have attached a video, at one point you can hear it clicking but it won't unlock.

Thanks, Daniel.

Video is here

https://photos.app.goo.gl/fHQXZQyaDu5q7sZ28

In the middle of this page is a section titled "Ratcheting, unscrewing, re-keying":

https://bmwmotorcycletech.info/fuel-caps-airheads-K.htm

If needed you may have to drill a hole which is described earlier in the article.

Kurt