2007-2009 Yamaha F15/F20 Outboard Service Manual, Page 119Get this manual

2007-2009 Yamaha F15/F20 Outboard Service Manual, Page 119

Power unit
Timing belt and sprocket
22 (2.2 kgf m, 16.2 ft Ib) (0.8 kgf m, 5.9 ft Ib)
108 (10.8 kgf m, 79.7 ft lb)