Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 222Get this manual
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15 Torque gear housing retaining bolt and nuts to 40 lbft(54.0 Nm) 16 Apply Loctite Grade "A" on anode plate retain ing boltand install anode plateTorque plate retaining bolt to 180 lbin(20.0 Nm) Prop