1996-2006 Yamaha 115-140HP Outboards Service Manuals, Page 678Get this manual
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CYLINDER, PISTON AND CRANKSHAFT
(1.0 kg, 7.2 ft Ib) (1.8 kg, 13 ft Ib) (2.0 kg, 14 ft Ib) (4.0 kg, 29 ft Ib)
Turn the crankshaft and check for smooth turning Tighten the bolt