I am considering buying a used reconditioned 300 gallon sprayer but I am new to the spraying game and I have no idea what to look for? The sprayer I ma looking at has a 5.5hp Honda engine with an autoreel. He had it in the paper for $2200 -- I offered him $1500 and he said if I brought him the cash before someone else came with more he would take it. I've done some research and this seems like a fairly good deal --but I would like some of your opinions -- what should I look for to make sure it's not a lemon. Particularly the pump -- what should it have? Thanks for any help you can give me.