I have an old 1970's era 109 with a K241 that I'm fixing up. I just put on a new coil, condenser, plug & wire to get my spark back. Put new parts in the carb after giving it a good cleaning. Started it up and it seemed to be running fine. I mowed lawn for about 15 minutes when she just quit as if had been turned off. I checked for spark again and it's gone.
Anyone feel like helping a brother out? I'm not a mechanic but I can follow directions.