Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 162Get this manual
Drive Shaft Housing and Exhaust Tube Components REFNO1 DESCRIPTION
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Drive Shaft Housi ng St ud (4)2-3116" (55.6mm) long Stud2-3 8" (60.3m m) long 80lt Washer (6) Nut (5) Stop Strap Bolt Nut Mount (2)lower Cap (2)rubber Bolt (2) Ground Cable Washer (2) Nut (2) Retainer (2), lower mount Bolt (4) Lockwasher (4) Cover (2), lower mount Screw (4), cover attaching Nut (4)nylon Dowel Pi (2) Ex haust Tu be Sealexhaust tube Grommet, water tube Tube, water Sealwater tube