just got machine today, going to get all filters changed this weekend and try to start. pretty sure it's a 4 cyl. diesel. has a tag on side that say's bosch kiki. wheels wont turn with motor off so i think it;s a hydrstatic drive.can use help with place to get parts and any paper work, or diagrams put water in rad. leaking at main bottom. pretty sure just a gasket . water pump has anti freeze in it.