2000-2005 Yamaha F40B Outboard Service Manual, Page 246Get this manual
IPOWRI C!J: ICRANKSHAFT AND PISTON CRANKSHAFT AND PISTON
REMOVINGINSTALLING THE CRANKSHAFT AND PISTON
1st 2nd 15 Nm (1 .5 kgf, 11 ft Ib) 30Nm (3.0m kgf, 22ft Ib)
6 Nm (0.6 kgf, 4.3 ft Ib)
12 Nm (12 kgf, 8.7ft Ib)
8.4 Nm (0.8 kgf, 5.9 ft Ib) 40
Order Cylinder head Exhaust cover