Not a BMW application, but seeing as the BMW's have the same fuse, I thought this would be well placed in the R65 section .
My '87 Guzzi had given me problems with starter operation since I got the bike back on the road about 2 years ago .
Replaced the starter relay, had the ignition switch go bad and replaced it, that seemed to cure the problem for about a year .
The problem, was pressing the starter button and nothing would happen, volt meter on the bike showed no drop when the button was pressed .
Checked the switch and wiring and found no issues .
Last Thursday morning, I was going to take the Guzzi to work, I only take it to work on holidays and weekends, due to collector insurance on the bike, not supposed to take it to work, only to shows, etc .... .
Got the bike out and pressed the starter button, no starter operation and no voltage drop on the bikes volt meter, this time, it stayed ' broken ', so I could do some trouble shooting .
Did a quick check when I got home on Thursday, did a quick check for voltage at the starter relay found none .
Worked double shifts on Friday and Saturday, dead tired on Sunday, so nothing got accomplished .
Got back to it this afternoon, opened the starter switch, no voltage to the switch .
Checked the fuse and it looked good but on closer inspection, I found that the conductor of the fuse had been kinked / creased and had broken in two .
Replaced the fuse and the starter worked like it should .
I'm now looking for a replacement 4 fuse box for the bike .