1. Tilt gear case so that gear oil in the gear housing will drain towards the front of the housing, out the fill hole into an oil pan.

2.  Remove and inspect fill screw for metal filings or chips.  Clean fill screw.

3.  Remove vent plug and washer and allow lubricant to drain.

4.  Inspect gear oil for metal particles (metal flakes).  Presence of fine metal particles (powder) on the fill screw magnet is normal.  The presence of chips requires the gear housing to be disassembled and components repaired or replaced.

5.  Note the color of the gear oil.  White or creamy indicates a presence of water, seals should be replaced.  A yellowish color due to the agitation/aeration of gear oil is normal and should not be confused with the presence of water.

Important:  Replace the fill/vent seals.

a: Vent screw and washer.

b Fill screw and washer.

Filling the Gearcase.

1.  With outboard in operating position, insert oil tube or pump nozzle into fill hole.

2.  Fill gear housing until excess gear oil flow from vent hole.

3.  Install vent screw and new washer.

4.  Install fill screw and new washer.