Hey everybody! My name is Chris and I am having issues with my Scag. It is a 36" walk behind with the 17hp. Kawasaki. I have owned 2 of these in the past for commercial use but this one I only use on my residence. I fire it up and it will run great for a while then give a slight backfire and quit. I can usually start it right back up, run for a while and quit again. I can do this about 3 times before I have to let it sit a while and then it will fire back up again and go through the same process. Seems like heavier the load on the engine, the sooner it will cut out. I changed the fuel filter and don't want to start throwing parts at it. Spark seems fine. Any ideas would be great. Thanks.