Thanks for the feedback guys. Yes, if you hold the choke on about half choke it will keep running for as long as you hold it in just the right spot. Also if you operate the throttle butterfly by hand, at top of the carby, it will keep running. I have actually checked the gasket and ensured the carby is tight Grumpy. I think the next thing will have to be remove the carby and give it a thorough clean. There may be some gunk in an air bleed or jet. Will let you know what if anything I find.
