LOWER UNIT - 6A-590-817643R1 DECEMBER 1996
51043
91-817058A-1 Bearing Driver Assy. (Lower Drive Shaft
Bearing)
51043
91-817070 Drive Shaft Holding Tool
Draining and Inspecting Gear
Lubricant
! WARNING
If gear housing is installed on outboard, disconnect
(and isolate) spark plug leads from spark plugs before
working near the propeller.
1. With gear housing in normal running position, place a
clean pan under housing and remove two vent plugs
and one fill/drain plug (with gaskets).
50558
a
b
a - Vent Plug
b - Fill/Drain Plug
2. Inspect gear lubricant for metal particles (lubricant will
have a “metal flake” appearance). Presence of fine
metal particles (resembling powder) on the drain plug
magnet indicates normal wear. Metal chips on the
magnet indicate the need for gear housing disassem-
bly and component inspection.
3. Note color of gear lubricant. White or cream color indi-
cates presence of water. Gear lubricant drained from
a gearcase recently in operation will have a yellowish
color due to lubricant agitation/aeration. This is normal
and should not be confused with the presence of water.
4. Presence of water indicates the need for disassembly
and inspection of oil seals, o-rings, gaskets and com-
ponents for damage.
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