I bought a Flymo Briggs and Stratton 850 series engine two weeks ago.
It worked perfectly for a time but now will only run for a few seconds after priming, any ideas folks?
Take the carburettor apart and you will find a rubber type gasket. These occasionally split and allow air in, this dilutes the petrol vapour stream and the engine won't run. if it's split, replace it.
I can help ...
Flymo wont run?