Swampdweller
Senior Member
My riding mower engine won't start. It ran fine a few days ago. It wont turn over enough to start.(turns over once and stops) I checked the battery and even boosted it. I then replaced the starter, still barely turns over. Now I pulled the spark plug and it spins like a top. I thought stuck valve? Removed valve cover and everything looks OK when I turn it over with the plug out. This one has me scratching my head. It's a 16.5 hp overhead valve. Any ideas would be appreciated.