Hello ,my mowers been brilliant up till now but the only way i can get it to start is by pooring petrol into the engine through the spark plug hole or by taking the air cleaner off and pooring some in that way . So far ive fitted a new plug ,new petrol ,hole in filler cap trick ,and stripped and cleaned all jets in carburetor. when it does start eventually it does seem to run ok which baffles me , has anybody any ideas , im thinking its still a fuel problem as when it does start it seems fine