Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 184Get this manual
Removal, Disassembly, Cleaning and Inspection E-Z Shift Gear Housing REMOVAL
5Remove anode plate trim tab
.ll.WARNING
Disconnect high tension leads trom spark plugs and remove spark plugs from engine before removing gear housing from drive shalt housing
.ll.CAUTION
Gear housing MUST BE in neut ral position and shift
shaft MUST BE removed from gear housing BEFORE
propeller shaft can be removed from gear hou sing
1Disconnect high te nsion leads from spark plugs and remove spark plugs from engine2Shift engine into neutral position 3Tilt engin to full up posit ion and engage tilt lock