Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 100Get this manual
Cylinder Head Bolts 180 lbin(20.3 Nm) Add light oil to threadsIMPORTANT: Reier to REASSEMBLY lor proper torque sequence Thermostat Cover Bolts 150 lbIn(16.9 Nm) Apply Locquic Primer and Loctite 242 (obtain locally) to bolt threadsI I
Crankcase Cover Bolts 30 lbIt(40.7 Nm) Add light oil to threadsIMPORTANT: Refer REASSEMBLY for proper torque sequence
Exhaust Cover Bolts 150 lbIn(1 6.9 Nm) Apply locq uic Primer and loctite Grade to threads IMPORTANT: Reier to REASSEMBLY or proper torque sequence