I sold my old (2005) Husqvarna z48 in. 17 hp kaw. It was all beat up and smoked so I put it in the paper for $1500 hoping to walk away with $1000. It needed a pulley and burned some oil and that is all I knew about what was wrong with the mower. I am by no means, a mechanic. I sold it for $1200 last thursday. This is, of course, all he said he had on him and since it was more that the $1000 I was hoping for, I took it and tossed in some extra blades since my new mower uses longer/different blades. The guy calls me today saying that the rings need to be replaced and basically the engine is shot. This is what his mechanic told him. So to replace the motor, he wants me to pay $400 towards the engine and 'do him right' So basically, I would only get $800 in the end which my mechanic says is 'ridiculous' I told him eveything I knew that was wrong with it and he never mentioned anything about calling me back if something was wrong with it and asking for money, basically 'As is'. what would you do?