I have a simplicty 4041. If i run it for about 25 minutes it dies and wont fire again until its completly cool . anybody have an idea on this It has the 19.5 onan i believe. otherwise everything seems to work great. thanks
Either the coil is breaking down or the fuel tank vent is plugged but I'm betting it's the coil.
Try running it till it starts to die,reach up and loosen the fuel cap. If it picks back up and runs the vent is plugged.
If fuel system is ok run it and time it. If it runs 25 minutes,then dies,stick with it and time how long till it will restart and run. Keep it running again till it dies and again,time how long before it restarts. Do this a few times. I'll bet it runs shorter periods and takes longer to cool each time. If that's the case it is the coil.