Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 140Get this manual
49Clean bolt threads with Locquic Primer and apply Loctite Grade "A" (92-436091) to threads of exhaust cover bolts and install exhaust coverTorque bolts to 150 lbin(16.9 Nm) following torque seq uence shown 51Install lower reed block with gasket to reed block housing with two screwsClean screw threads with Locquic Primer and apply Loctite 242 (obtain locally) to threads Torque screws to 60 lbin(6.7
aReed BlockScrews
52Pl ace gasket on carbu retor adaptor plateIMPORTANT: Prior to Installing reed block gaskets (12 each per engine), apply light coal of SILICONE SEALER (oblain locally) 10 both sides of each gasketAlter assembling reed blocks to powerhead, allow SEALER to cure for 24 hours before starting engine50Clean bolt threads with Locquic Primer and apply Loctite 242 (obtain locally)Attach oil pump assembly to engine block with two bolts and torque bolts to 50 lbin(5.6 Nm)