Think your petrol was stale, and it goes jelly like. Add some fresh petrol - it worked for me.
Dont store your mower with petrol in it, it goes off after a few months.
Baz Salty, February 2011
hi the prime button on my lawnmower will press in but takes around 10 mins to come back out again, i bought another mower and the button comes back out straight away, is there anyway to cure this problem thanks.