I have a new x300 owners manual that came with my X580, it was still in the bag and the prior owner never opened it. After I opened I text him and told him it was the wrong one so he ordered a new one for me and will be mailing that one to me. So I offer this one up for 30.00 with free shipping. Im going to send him the money cause I think his dealer screwed him over by not giving him the correct one. Theres alot of these on ebay that are pretty high in price. Let me know. BTW it seems to cover all of the 300 series mowers not just one.