I'm out of ideas...
Recently restored TY 250 runs and rides great until I run it fast - 3/4 throttle for a minute or two. Then it acts like it's out of fuel and shuts off. A minute later the thing fires and idles like nothing happened!
So - new fuel delivery system complete - everything. Clark fuel tank and petcock, fuel lines, Micunni Carb, Boysen reeds and spacer - SAME thing!
So - electrical. In resto I cleaned the mag case and replaced the harness from the Ignition side to the new coil, wire, cap and plug. I'm a competent solderer and again, it works great unlil it gets hot. I run 45:1 and have the oil pump blocked and line ports plugged.
I have two guesses - crank seals, condenser. I don't really think they fit. Shorted stator windings at temp maybe? I was careful but I was in there.
Ideas welcome - why's and follow ups welcome - I'm stuck and the machine is great - except it occasionally shut off. Didn't Volvo's used to do that? Ha!