Well after only about a month I sold it back to the dealer for a $200. loss. In my opinion the commercial "21 AS" was a POS!!! Here's what happened, first day belt got so loose I had to use as a push mower, tools to far away to fix. Fix that ok np, then read about all the belt problems here on LS, and told my dealer to read the posts and order me the kit for the belt and they did. Before I could install, belt fell off mowing flat ground, ok fix it again. Then mowing and could not get it to restart after emptying the bag, found the linkage for operator presence was not working right and had to raise up the ground contact so the thing would start, but now it would not shut off without pushing down on the ground switch (make sure you take the screwdriver w/you). And last thing it just died while mowing, and felt like it seized up, could not pull cord or move the blade. OK now I'm mad I don't use it much but I do need it every day. Went back to dealer on a rain day, warned them on my way there to be ready I was pissed off! Told them if I could I'd sell this POS back to them, they did'nt think that would work. Talked with my other dealer who carries Toro, he will sell me a Super Recycler 20095 for $600. So told the Exmark dealer I'll take $600. and they said OK. So now I got a mower that works, and good bye to the exmark. So anyone thinking of buying one of these don't, go w/Toro, Honda, JD anyone Exmark they still can not make a 21'' mower.