Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 274Get this manual

Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 274

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Installing Gear Housing to Drive Shaft Housing Disconnect (and isolate) spark plug leads before
8 Install locknut and washerTorque nut to 40 lbft (54.2 N-m)
crankshaft splines, rotate flyw