Yamaha Marine Outboards F4A/F4 Factory Service Manual, Page 54Get this manual
SPEC SPECIFIED TORQUE
TIGHTENING TORQUE
TIGHTENING TORQUE
Part to be tightened POWER UNIT Oil drain Spark plug Recoil starter Flywheel rotor ass'y Carburetor Intake manifold Cylinder head cover Cylinder head Part name Bolt Bolt Nut Bolt Bolt Bolt 1st 2nd 1st 2nd Bolt Bolt Nut Bolt Bolt Bolt 1st 2nd Bolt Bolt Bolt 1st 2nd 1st 2nd 1st 2nd Bolt Bolt Bolt Thread size M8 M14 M6 M10 M6 M6 M6 M8 M6 M6 M6 M6 M6 M8 M7 M6 M6 M6 M6 Q'ty Tightening torque Nm mkgf ftlb 20 25 44 11 15 30 6.0 12 10 10 22 12 18 4.5 13 2.0 2.5 0.8 4.4 0.8 0.8 1.1 1.5 3.0 0.6 1.2 1.0 0.8 0.8 0.8 1.0 2.2 1.2 0.8 0.3 0.8 0.3 0.8 0.3 0.8 1.8 0.45 0.3 0.8 0.3 0.8 1.3 0.3 0.8 0.3 0.8 0.8 14.5 18 5.8 32 5.8 5.8 8.0 10.8 22 4.3 8.7 7.2 5.8 5.8 5.8 7.2 16 8.7 5.8 2.17 5.8 2.17 5.8 2.17 5.8 13 3.25 2.17 5.8 2.17 5.8 9.4 2.17 5.8 2.17 5.8 5.8