Runs rough and has no power. When you put on a load, it coughs. I have determined that it is running on one cylinder, but has spark to both. Pulled plugs, changed plugs, ran for a while, and pulled again. one is wet and dirty one is clean. Also looks like a small amount of oil blowing out of exhaust.
Valve? Rod? Lifter? Gasket? Anyone know where I can get a good service manual on the internet to fix? or should I give up and take to the dealer? Machine is a John Deere M665.
Thanks for any helphttp://www.lawnmowerforum.com/images/smilies/thumbsup.gif
I would start by checking for spark on the bad cylinder while running. May have an intermittent spark, which will drive you nuts. Is the bad cylinder the wet or dry one?
