When I bought the mower it ran fine. Besides that the carb was sending gas flying. I figured that it need a good carb clean. So we soaked it and got a new float bowl gasket sense the old one ripped when i pulled the bowl of. When i was cleaning the mowers motor i took the head bolts off to get the shield on the front of the motor off. Then I put then back on but apparently it ruined the head gasket. The next day I went and bought a new head gasket for it and put it on then torques the bolts. Put it back together and I still had barley any compression. The rings had a much bigger gap then they should have and the valve had a bad seal. So as of today a new intake valve and piston rings are on their way. :D