I have multiple issues on my machine. I intended to mow my lawn for the first time this year this past weekend. Prior to doing so, I changed the oil and replaced the oil filter. Late in the year last fall, I was having issues getting the mower to start, and when I turned the key to the off machine, the engine still continued to crank. It didn't matter if I engaged the blades, took the emergency brake off, got off the seat - the engine still cranked. It wasn't until I disconnected the battery that it stopped. Fast forward to last weekend: After I changed the oil and filter, I thought that I would try starting the mower. Low and behold....it started right up! I was low on gas and my wife went and got some gas for me while I begun mowing. I went for 20 minutes without an issue. My wife returned with the gas and I put the e-brake on and filled the tank with the mower still running. Within a minute, the engine started pulsating, revving up and down, before finally stalling. I tried starting the mower several times, but it would only start, run a couple seconds, and stall again. Thinking that I maybe had stirred something up, I went out and purchased a new fuel filter and air filter. After replacing them, same issue. Then I would turn the key, and nothing would happen. When it finally did begin cranking again, it wouldn't start. Then the cranking after the key was off began again and I drained the battery. After pulling the battery and charging it, I tried starting the mower again, and it fired right up. Sensing a miracle, I ran in the house to grab my ear muffs. By the time I returned about a minute later, the engine had stalled. Now I can't even get it to crank. That's the best info that I can give you. I think I have multiple issues: bad ignition, bad solenoid and/or water/dirt in my fuel (I did put a little dry gas in the tank prior to the last time it ran for a minute). Does anyone have any suggestions on the proper way to attack the problem?