1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 190Get this manual
POWERHEAD
11Place crankcase cover onto cylinder block and secure with boltsTorque bolts to 22.7 Nm (16.7 lbft in numbered torque sequence
aBolts [Torque to 22.7 Nm (16.7 lbft] 12Rotate crankshaft several times to assure free operation13If disassembled, assemble reed block as follows: aPull ends of rubber seal into holes in intake manifoldreed blockTrim off installation tabs from rubber seal and apply RTV Silicone Sealer at each location where seal passes through manifold