On Monday, April 28, 2014 1:30:20 PM UTC-4, Fat-Dumb and Happy wrote:
Sounds like you probably need to replace this gasket on the air

cleaner assembly or goop it up good with gasket sealer.



http://www.ebay.com/itm/Briggs-Strat...-/150904369521

and a youtube of course...

http://www.youtube.com/watch?v=O0KshOeJWYw

Now how does it work, or rather how is it supposed to work? Unlike

most small engines that squirt some fuel into the carb, on a Briggs and

Stratton of this type the primer pressurizes the bowl of a float type of

carburetor pushing the fuel up into the throat of the carb. It is not

uncommon for those types that are mounted on the air box to not work

right due to warping of the plastic air filter back plate. If it is one

of these types, the least most expensive repair is to remove the back

plate and reinstall it with two gaskets.

More information and disinformation..

http://www.ar15.com/archive/topic.ht...&f=5&t=1036704

Sorry, but an air cleaner gasket could not produce the
problem. An engine will run with a leaking air cleaner
gasket or the air cleaner completely off the engine.