1992 K100 RS "breaks down" "surges" between 4-5,000 rpm only

[Inge K.]

SO to warm up the bike it must be on the center stand? You can not leave it running with the kick stand down ever?

Correct.

[Motorhobo]

Really? On My K75 the bike will start and run in neutral with sidestand down. But as soon as the clutch is engaged, the sidestand retractor engages. I'd think the switch would work the same way, I.e. nly switch off if the clutch is engaged.

I heard some reasoning why the bike shouldn't run on sidestand...oil and rings And whatnot. Was that b.s.?

[Inge K.]

K75's ain't got a sidestand switch.....it's only found on Motronic euipped models.....75's got Jetronic.

Self retracting stands......clutch mechanism operated retracting stands.....sidestand switches,
it's all a safety mechanismes, to avoid you from a take off with the sidestand down.

Why BMW have choosen to let the sidestand switch cut the fuel pump relay, I don't know
maybe because it's the easiest and simplest way.....it could of course be wired differently, but it ain't

Could mention that on the later models of K11's, it also cuts the starter signal....