Hi.....Anyone know where I could locate a diagram of this mower? Im needing some parts but unsure what exactly I need. The rear left wheel is loose - falls off where it connects to the rod, also the inner plastic part of wheel is gone so all i see is the teeth.(which i think the rod connects to the plastic part) I dont think just a wheel would help because the wheel itself isnt loose its the rod that goes into the wheel....if anyone could help thatd be great. Thanks.