Yamaha Outboards 3P Service Manual, Page 73Get this manual
IELEC[ M6 1001 0
INSTALLATION
FLYWHEEL MAGNETO 1) Install the magneto base on to the cylinder block2) Install the flywheel rotor on the crankshaft so that the woodruff key fits in the keyways in the crankshaft and flywheel rotor3) Lock the flywheel rotor with the washer and nut to the specified torqueTightening torque: 4050 Nm (4.05.0 m.kg, 2936 ft.lb)