GG did you manage to get the mower fixed? I am having; what sounds like; the same problem. I did find a problem in the carp bowl, the needle attached to the float was stuck in the up position so not allowing fuel through. I thought I had it fixed and it happily continued till I filled one collection bag, but now it is doing the same as yours.
Pouring fuel directly into the carb will allow it to run for a period of time but then stops, maybe 30 secs?
It also won't start in anything but the 'start' position, moving it after it has started makes it cut out.
I was wondering if I had disturbed one of the levers controlling the carb, but I can't see how? ... I had been looking for a photo on the web to make sure its correct, but I can't find one.
Beanzy, April 2009