I bought this motor with a 22ft angler.but somewhere along the way someone reconfigured fuel system to a fuel pump from auto parts store mounted to transom.in talking around and looking for the part I cant seem to find out where it started out.says it has two pumps.iget that and can easily buy the parts but I take cover off and im not sure what has been byp***ed or where to start?besides diagram of the part where can I get diagram of original motor.