I own a 2007 BMW R1200GS Adventure. I commute

remove the cover ,wind motor over to Top Dead Centre ,look for timing marks (may need to turn over once more to get all the marks to line up) Mark all the reference marks with a white paint pen to make them clear , Release the tenenser & lock it out remove the old belt ,refit the belt making sure the marks all line up release the tenenser and lock it ,recheck your marks ,wind over by hand a couple of times to check everything is OK refit covers

There is no cam belt. Cams are chain driven and you have to remove and strip the entire motor to change the chains.

It seems the only solution is to exchange the ABS Modulator. I´ve not heard of any repair company that refurbish these parts. It´s an expensive reposition part, and I´ve just got the problem on my 2007. It seems the 2008 GS has a Recall for this problem, but not on the 2007.

I believe that the Adventure model is higher, has stone guards etc... and is more orientated to long distance traveling...eg: bigger fuel capacity.

Si