2009 Yamaha F40 Outboard Service Manual, Page 226Get this manual
Exhaust cover
23 Nm (2.3 kgfm, 17.0 ftlb)
9 Nm (0.9 kgfm, 6.6 ftlb)
a Nm (0.6 kgfm, 4.4 ftlb) 10 12 Nm (1.2 kgfm, 8.9 ftlb) 11 12
2 Nm (0.2 kgfm, 1.5 ftlb) 23 Nm (2.3 kgfm, 17.0 ftlb)