IMPORTANT INFORMATION - 1B-590-824052R3 JUNE 2002
Gear Case Lubrication
Gear Case Lubricant Capacity
Gear Case Ratio Capacity
1.78:1 21 fl. oz. (621ml)
1.87:1 22.5 fl. oz. (665ml)
2.00:1 22.5 fl. oz. (665ml)
2.30:1 22.5 fl. oz. (665ml)
Draining Gear Case
WARNING
If gear housing is installed on outboard, to avoid
accidental starting, disconnect (and isolate)
spark plug leads from spark plugs before work-
ing near the propeller.
CAUTION
Do not use automotive grease in the gear hous-
ing. Use only Quicksilver Gear Lubricant.
1. Tilt outboard so that lubricant in gear housing will
drain toward front of housing, out fill hole and into
clean container.
IMPORTANT: Inspect FILL and VENT screw seal-
ing washers for damage. Use new washers as
needed.
2. Remove lubricant FILL screw and sealing
washer. Note amount of metal particles on
magnetic fill screw.
3. Remove VENT screw with sealing washer and al-
low sufficient time for all lubricant to drain.
a
b
a - Vent Screw w/Sealing Washer
b - Fill Screw w/Sealing Washer
4. Inspect gear lubricant for metal particles (lubri-
cant will have a “metal flake” appearance). Pres-
ence of a small amount of fine metal particles (re-
sembling powder) on the fill screw bar magnet
indicates normal gear wear. An excessive
amount of metal filings or larger particles (chips)
may indicate abnormal wear and requires gear
housing disassembly and component inspection.
5. Note color of gear lubricant. White or cream color
indicates presence of water in lubricant. Gear lu-
bricant which has been drained from a gear case
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.
6. Presence of water in gear lubricant indicates the
need for disassembly and inspection of oil seals,
seal surfaces, o-rings, water pump gaskets as
well as gear housing components for damage.
Checking Lubricant Level and
Refilling Gear Case
IMPORTANT: Never add lubricant to gear hous-
ing without first removing VENT screw, as
trapped air will prevent housing from being filled.
Fill gear housing only when outboard is in oper-
ating position.
1. With outboard in vertical position, insert lubricant
tube into fill hole.
2. Slowly fill housing thru “FILL” hole with Quicksil-
ver Gear Lubricant until lubricant flows out of
“VENT” hole and no air bubbles are visible.
3. Install “VENT” screw into “VENT” hole.
IMPORTANT: DO NOT lose more than one fluid
ounce (30cc) of gear lubricant while reinstalling
“FILL” screw.
4. Remove grease tube (or hose) from “FILL” hole
and quickly install “FILL” screw into “FILL”
hole.
a
b
a - Vent Screw
b - Fill Screw
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