Forum bmwbike.com

Hi Rolf, I have an MZ system on my R27. It works well in that it replaces all the points and provides a nice 12V charge but it is not a battery / coil system, so needs a fair kick to get it going, whereas the old system would start with a modest kick only. One set of coils provides the spark, timed ...

According to Service Bulletin 2/66 (229) R27 carburettors from #384365 had 125 main jets with accelerator pumps fitted "in order to obtain better acceleration". My R27 #385188 has a 120 main jet and doesn't appear to have what I would call an accelerator pump, or what I am used to seeing o...

I have just fitted an MZ 12V kit to my R27. It was easy to instal, had good instructions, with one minor omission (unclear dip switch setting data, quickly confirmed by MZ), and seems to work very well. The only real problem is that as the system is split, with one coil for the spark and the others ...