Step 3: Look For Any Crack In The Cylinder Head.The Yamaha Banshee has been an icon of Yamaha ATVs since their introduction in 1987. Yamaha Motorcycle Manuals Pdf Wiring Diagrams Fault. Yamaha fault code list mio i 125 Every lower unit from JASPER MARINE receives (where applicable to unit design) all new bearings, gaskets, seals, water pump housing, and water pump impeller to assure the performance and reliability of your remanufactured unit.