I read thru an earlier post on same; just a few questions if you all will indulge me. 2005 HUSTLER FasTrack w/ 20HP HONDA. Mine was running just fine about 30 days ago; that's the last mowing we did. Just tried to start it; turns over but no sputter or anything; just starter strongly spinning engine. 1. As to the fire...should I be able to see the spark when I pull the plug, leaving the plug wire connected? I've cleaned the spark plug and cap, re-attached, turn motor over, nothing on spark plug. 2. Would a bad kill switch/wire still let the starter turn? 3. I've pulled the air filter, which I maintain diligently, and there is some oily gasoline-smelling wetness on bottom edge of air filter housing.....and also some black oily gas-smelling residue on spark plug threads.....? Lastly, I know that I've not begun to solve via troubleshooting; but if I decide to change that engine out, what are your recommendations? Thank you.