Mercury Mariner Outboard 225 3 Litre Service Manual 1994, Page 332Get this manual
Coupler Installation ''
Locknuts must be used with bolts to secure steering cables to couplerFailureto adheretothis requirement could result in steering system failure
Lubricate ball joint in steering link rod with SAE 30W Motor OilSecure link rod 10 oulboard steering arm, using special washer head bolt (10-14000) provided and nylon insert locknut as shownTorque special bolt to 20 lbft (27 .1 'm), then torque locknut to 20 lbft(27.1 Nm)
Slide coupler (a) onto steering cable ends and secure each
steering cable to coupler with bolt (b) and locknut (e) as shownTighten to torque of 20 lbft(27.1 Nm)