Hello. Continuing on with this long-term project. [URL="http://www.doityourself.com/forum/outdoor-gasoline-electric-powered-equipment-small-engines/579117-engine-oil-seal-speed-governor-fixing.html"]http://www.doityourself.com/forum/outdoor-gasoline-electric-powered-equipment-small-engines/579117-engine-oil-seal-speed-governor-fixing.html[/URL] [URL="http://www.doityourself.com/forum/outdoor-gasoline-electric-powered-equipment-small-engines/566981-removing-impeller-weldment-craftsman-chipper.html#post2541038"]http://www.doityourself.com/forum/outdoor-gasoline-electric-powered-equipment-small-engines/566981-removing-impeller-weldment-craftsman-chipper.html#post2541038[/URL] More questions: 1) I replaced the oil seal and gasket. Can I run this "engine only" to see how it sounds and works, or do I need to install the blades and guards so it doesn't overspeed? 2) What are those holes for on that lever ("Here")? I found exploded parts diagrams, but can't find anything to show how the linkages are supposed to be connected, and if anything goes in those holes. Thanks for all your help! Regards, leaning

I have a JS28 John Deere its always ran perfect 1st pull. All of a sudden it won't even try to start. Has new spark plug...tested it, it is getting spark. cleaned out the carburetor meticulously today. Air filter is clean. Gas tank is clean and so is fuel line. Gas is brand new. When I have the air box on the engine won't make a noise when I try to start it. With the air box open it will back fire out the carburetor several times. I'm not sure what could make a perfectly working mower go from working perfect then 15 mins when I try to restart it its 100% dead. Any suggestions would be appreciated.