Acquired second hand. Told the machine was difficult to start. Pulled down and cleaned piston, no spark, replaced plug which was completely fouled up, oil residue everywhere, still no spark, found replacement coil, now have spark. Pulled carby off to clean, as mentioned, oil dryed throughout carby, diaphragm needs replacement, maybe petrol plunger also. Decided to get repair carby kit. Have not yet received kit and after checking adjustment needles, concerned that the carby may be shot anyway. Best can hope for now is to install carby kit and see if it fires up. If it doesn't, guess it may be time to retire the lot?.
Pedro
