I have a Honda HR-21 lawnmower which dates back to approx. 1986. She's an oldie but it is in excellent shape and I have never had a problem until recently. The problem is that after a few minute of running it, it dies and won't start back up until it is cold. By cold I mean hours later. I've had the carb completely cleaned, new plug. When cold it starts first pull and runs real good until she heats up i guess. After researching on the web, I have been led to believe that it could be the ignition coil. However, Honda discontinued them for this model and I was wondering if anyone on here could help me out as far as an alternative coil that I could modify that would work on this mower. It would be a real shame to throw it out as the motor when running is as strong as ever. Thanks.