Drive Housing Lubricant
DRAINING LUBRICANT
NOTE: When draining the drive housing lubricant, visually check for water in
the lubricant. It may have settled to the bottom and will drain before the
lubricant or it may have mixed with the lubricant, giving it a milky color. In either
case, have the drive housing checked by your authorized Mercury Marine
dealer. Water in the lubricant can cause premature gear or bearing failure or, in
freezing weather, damage to the drive housing.
a - Drive housing (bottom view)
b - Fill/drain screw
c - Vent screw
1. Place a drain pan below the drive.
2. Remove the fill/drain screw.
3. Remove the vent screw to drain the lubricant.
ADDING LUBRICANT
Fluid Type
Capacity
High Performance Gear Lube 725 cc (24 oz)
1. Insert the nozzle of the gear lubricant tube in the drive housing's fill/drain
hole.
2. Add lubricant to the point of overflow.
3. Install the vent screw. Ensure that the screw gasket is in place.
4. Remove the nozzle of the tube and install the fill/drain screw with the
gasket.