1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 192Get this manual
POWERHEAD
16Secure exhaust manifold and cover (with new gaskets) using 11 boltsTorque bolts to 6.8 Nm (60 lbin in torque sequence listed17Secure cylinder block cover to block with boltsTorque bolts to 6.8 Nm (60 lbin in sequence shownInstall thermostat, if equipped