2001 Mercury Mariner 50-60HP Factory Service Manual, Page 456Get this manual
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NON-BIGFOOT GEAR HOUSING
aTrim TabAnti-Ventilation PlateRetaining Bolt and Washer M10x30 Retaining Bolt Torque 22 lb-ft (29.8 Nm)
90-858896 MAY 2000
Page 6A-51