This diode appears to be a general purpose, about 1 amp, diode. You can test it with a ohmmeter, but the readings will depend on the type of meter y...

I put an oil pressure gauge on my '95 R100RT, and I like it. 120 psi at idle cold, 80 psi at speed hot, about 30 psi at idle hot. My timing chain ratt...

Thanks for your reply and photos. I particularly like the banjo fitting at the caliper, very clean. And your hydraulic fluid refill procedure is pure ...

You do, indeed, have an electronic tach. It has a circuit that takes a signal from the coil primary and generates a one milliamp (.001 amp) per 1000 R...

Brook Reams did a very nice write-up on this by-pass valve. It includes removal, diagnosis, repair and re-installation, including pictures. Check out ...