OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Briggs & Stratton Engines 3hp B & S stops after 5 minutes running

Hi, I have a Rover Scott Bonnar 45 model no 80202 0880 01 80030303. Have cleaned out the carbe, new diaphragm, air cleaner, manifold and fuel tank gaskets, oil and no rubbish around the cooling fins. It starts and runs for about 5 minutes and then runs rough, loses power and stops. The only way to restart is to choke it once and it will go for another 5 minutes. Very frustrating. A couple of photos