I haven't ridden my 93 KX 500 in a number of years. I really need to go through the entire electrical system. It was not getting good spark the last time I had it running. I do have the Kawasaki of Riverside lighting coil set up on it which I love. I think it would be cool to race NORRA with it someday. It was raced in Baja a number of times.I’m friends with Bob the owner of Pro Action.
He could tune those to your liking.
Next time put some Sea Foam in it. I used to always turn off the gas on my KX 500 and run it till the carb ran dry. I didn't want pre-mix sitting in the carb because I didn't ride it often. I also drained the gas tank too so the gas wasn't sitting in there for months on end. Never had a problem with it.My WR450 won’t start either from sitting too long. Damn new gas doesn’t last for ****.