90-10100R30
15
GB
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1–3
a
b
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MAINTENANCE
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GEAR CASE LUBRICATION
When adding or changing gear case lubricant, visually check for the presence of
water in the lubricant. If water is present, it may have settled to the bottom and will
drain out prior to the lubricant, or it may be mixed with the lubricant, giving it a milky
colored appearance. If water is noticed, have the gear case checked by your
dealer.Water in the lubricant may result in premature bearing failure or, in freezing
temperatures, will turn to ice and damage the gear case.
Also examine the gear case lubricant for metal particles. A small amount of metal
filings or fine metal particles indicates normal gear wear. An excessive amount of
metal filings or larger particles (chips) may indicate abnormal gear wear and
should be checked by an authorized dealer.
Draining Gear Case
1 Place outboard in a vertical operating position.
2 Place drain pan below outboard.
3 Remove fill/drain plug (a) and vent plug (b) and drain lubricant.
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Gear Case Lubricant Capacity
Gear case lubricant capacity is approximately 4.5 fl. oz. (135ml).
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1-5
a
c
b
d
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GEAR CASE LUBRICATION (CONTINUED)
Checking Lubricant Level and Refilling Gear case
1 Place outboard in a vertical operating position.
2 Remove vent plug and sealing washer (a).
3 Place lubricant tube (b) into the fill hole and add lubricant until it appears at the
vent hole (c).
4 Stop adding lubricant. Install the vent plug and sealing washer (a) before
removing the lubricant tube.
5 Remove lubricant tube and reinstall cleaned fill/drain plug and sealing washer
(d).
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SUBMERGED OUTBOARD
A submerged outboard will require service within a few hours by an authorized
dealer once the outboard is recovered from the water. This immediate attention by
a servicing dealer is necessary once the engine is exposed to the atmosphere to
minimize internal corrosion damage to the engine.
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STORAGE
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STORAGE PREPARATION
The major consideration in preparing your outboard for storage is to protect it from
rust, corrosion, and damage caused by freezing of trapped water.
The following storage procedures should be followed to prepare your outboard for
out-of-season storage or prolonged storage (two months or longer).
CAUTION
Never start or run your outboard (even momentarily) without water
circulating through the cooling water intake in the gear case to prevent
damage to the water pump (running dry) or overheating of the engine.
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Fuel system
IMPORTANT: Gasoline containing alcohol (ethanol or methanol) can cause
a formation of acid during storage and can damage the fuel system. If the
gasoline being use contains alcohol, it is advisable to drain as much of the
remaining gasoline as possible from the fuel tank and engine fuel system.
Fill the fuel system (tank, hoses, and carburetor) with treated (stabilized) fuel to
help prevent formation of varnish and gum. Proceed with following instructions.
1. Pour the required amount of Gasoline Stabilizer (follow instructions on
container) into fuel tank. Tip fuel tank back and forth to mix stabilizer with the
fuel.
2. Place the outboard in water. Run the engine for five minutes to allow treated
fuel to reach the carburetor.
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Protecting External Outboard Components
3. Lubricate all outboard components listed in the Inspection and Maintenance
Schedule.
4. Touch up any paint nicks. See your dealer for touch-up paint.
5. Spray Quicksilver or Mercury Precision Lubricantions Corrosion Guard on
external metal surfaces (except corrosion control anodes).
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Protecting Internal Engine Components
Note: Before performing Steps 6 and 7, make sure the fuel system has been
prepared for storage. Refer to Fuel System on previous page.
6. Place the outboard in water. Start the engine and let it run in neutral to warm
up.
7. With engine running at fast idle, stop the fuel flow by closing the fuel shut-off
valve. When engine begins to stall, quickly spray Quicksilver or Mercury
Precision Lubricants Storage Seal into carburetor until engine stops from lack
of fuel.
8. Remove the spark plug and inject a five second spray of Storage Seal around
the inside of the cylinder.
9. Rotate the flywheel manually several times to distribute the storage seal in the
cylinder. Reinstall spark plug.
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Gear Case
10.Drain and refill the gear case lubricant (refer to maintenance procedure).
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Positioning Outboard for Storage
Store outboard in an upright position to allow water to drain out of outboard.
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