I got this free from someone who said that it was broken so they bought a new one. Said that it randomly falls to lower deck levels while your riding which causes it to scalp the lawn. I took it home and messed with it a bit and now its good as new. I later realized that it has an aluminum deck. Boy was I excited lol Anyone have any info on Ariens 21"? I personally have never heard of the brand. The engine is a 6.0 b&s. Any info would be appriciated. Are they commercial mowers? places I can buy parts from...........?