Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 228Get this manual
GEAR HOUSING (DRIVE SHAFT) REFNO1 10
DESCRIPTION GEAR HOUSING FITTING SPEEDOMETER HOSE CONNECTOR DOWEL PIN (2) NEEDLE BEARING DR IVE SHAFT PI NI ON GEAR WASHER PI NI ON NUT SHIM(S) ROLLER BEARING ASSEMBLY COLLAR O-RING SEAL CARR IER OIL SEAL GASKET PLATE GASKET WATER PUMP BODY WATER TUBE SEAL NYLON GUIDE IMPELLER IMPELLER DRIVE KEY BOLT (4) NYLON BUSH ING (4) LOWER SHIFT SHAFT "E" RING RETAINING RING ORING BUSHING OI SEAL RUBBER WASHER VENT SCR EW (UPPER) (MAGNETIC FILL SCREW (MAGNETIC) WASHER VENT SCR EW (LOWER) WASHER DIVIDER PLATE PLUG