2009 Yamaha F40 Outboard Service Manual, Page 213Get this manual
Power unit
Camshaft and valve
18 Nm (1.8 kgfm, 13.3 ftlb)
6 30 31 29 27 29 28 25 26 24 6
12 13 10 11 15 23 23 12 17 16 14
18 Nm (1.8 kgfm, 13.3 ftlb) Nm (0.2 kgfm, 1.5 ftlb) 18 Nm (1.8 kgfm, 13.3 ftlb)
10 11 12 13 14 12