Was having same issues of engine dying after 10 minutes of running under load. Thing would run all day long idling without load. It's a briggs 21hp engine on a craftmans lawn tractor. Read multiple forums about the issue... quickly cancelled thought of the coil... so solenoid it was I determined. Went to sears to order a new one... well not in stock in any warehouse... oh great, a month to get one from manufacturer... grass will be 3 feet high by then..
Parts counter guy gives me the name of a local small engine shop that keeps supplies.. so I got a used one from him for $20, sears wanted $92... so good deal and used one was guaranteed... sweet!
So I'm excited to get home and swap out the parts... done, start cutting the lawn... and yup, thing dies! Decided to bypass the solenoid. Cut pin off the original part and reinstall... well frig, thing dies again.
Back to square one... back to the forums... knowing its fuel related (I think), look at gas filter.. see gas... check for vacuum lock none, now thinking fuel pump, take it off thinking I can take it apart and clean it, nope just a fused piece of plastic... when I took the pump off, the vacuum hose that comes from the bottom of pump to the ohv cover just fell off... mmmm? So since pump is off I blew air through it thinking maybe it was semi seized or glogged etc...
Put everything back together and viola!
So not sure which fix was the right one but my grass is now cut... whoa!
