1995 Mariner Mercury Outboards Service Manual 50HP 4-Stroke, Page 148Get this manual
Cylinder Block Disassembly 1Hold crankshaft from turning using Powerhead Stand (M-91-83198M) Remove nut using 1-58 in Socket Tool (91 -809646A 1)2Remove the drive gear components
3Remove exhaust cover and gasket4Remove oil filter
Exhaust Cover Gasket Thermostat Gasket Thermostat Cover Oil Filter