1995 Mariner Mercury Outboards Service Manual 50HP 4-Stroke, Page 240Get this manual
6 Install bolts and washers, (two each side) Torque bolts to 40 lbft(54.2 Mm)Install locknut and washerTorque nut to 40 lbft(54.2 Nm)
52833Bolt and Washers (2 each side) [Torque Bolt to 40 lbft(54.2 N'm)]Locknut and Washer [Torque Nut to 40 lbft(54.2 Nm)]
Connect shift shaft by sliding retainer to the right and snapping into upper "locked" position
Check shift operationIn NEUTRAL, propeller shaft should turn freely in either directionIn FORWARD, propeller shaft SHOULD NOT TURN COUNTERCLOCKWISEIn REVERSE, propeller shaft SHOULD NOT TURN IN EITHER DIRECTION
IMPORTANT: If shift operation is not as described, remove the gear housing and correct the shift operation