2001-2002 Yamaha 50HP F50Z/T50Z Ouboard 4-stroke engines service manual, Page 151Get this manual
Timing belt and sprockets No1 Part name Timing belt Drive sprocket Driven sprocket Bolt Bolt Tensioner Spring Nut Retaining plate Woodruff key Bolt Washer Bolt Blowby hose Clip Dowel pin Q'ty M6x20 mm M10 40 mm 38 3.8 28 140 14 101 M8x20mm 25 0.8 2.5 5.8 18 Remarks Tightening torques Stage Nm kgfm ftlb