Yamaha Marine Outboards F4A/F4 Factory Service Manual, Page 56Get this manual
SPEC Nut mm 10 mm 12 mm 14 mm 17 mm Bolt M5 M6 M8 M10 M12
TIGHTENING TORQUE
General torque specifications Nm 5.0 8.0 18 36 43 mkgf 0.5 0.8 1.8 3.6 4.3 ftlb 3.6 5.8 13 25 31