On 5/16/2014 7:08 PM, noname wrote:
This one has me hornswoggled. I have a fairly
new push mower your typical low-end briggs and
stratton engine. The thing starts perfectly,
runs perfectly for about 20 minutes and then
starts sputtering. Not enough to stop the engine
but like it is choking or something.

Any ideas?

Some of the possible causes:

Bad ignition coil, fails when hot
Bad brand of motor oil
Valve clearance
Clogged vent on gas cap

--
..
Christopher A. Young
Learn about Jesus
www.lds.org
..