Received a carby from Vcomm, installed it and the mower ran for a couple of mins until the petrol ran out. Rested the machine for about 2 hours, got some more petrol and now the same result as original carby. It starts, runs for a couple of secs, then dies. Sometimes it will run for 5 or so secs but usually its a couple of secs. Still has spark, has compression i guess as it fires up but refuses to run for more than a few secs. Time to chuck this out.