Flushing The Cooling System; Top Cowl Removal And Installation; Exterior Care; Fuel System - Mercury 115 Manuam

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MAINTENANCE
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FLUSHING THE COOLING SYSTEM

Flush the internal water passages of the outboard with fresh water after each use
in salt, polluted or muddy water. This will help prevent a buildup of deposits from
clogging the internal water passages.
IMPORTANT: The engine must be run during flushing in order to open the
thermostat and circulate water through the water passages.
Note: You can have the outboard tilted or in the vertical operating position during
flushing.
WARNING
To avoid possible injury when flushing, remove the propeller. Refer to
Propeller Replacement.
1
Place the outboard in either the operating position (vertical) or in a tilted
position.
2
Remove propeller (refer to Propeller Replacement).
3
Thread a water hose into the rear fitting. Partially open the water tap (1/2
maximum). Do not open the water tap all the way, as this allows a
high-pressure flow of water.
IMPORTANT: Do not run engine above idle when flushing.
4
Shift outboard into neutral. Start the engine and flush the cooling system for at
least 5 minutes. Keep engine speed at idle.
5
Stop the engine. Turn off the water and remove hose. Reinstall the propeller.
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TOP COWL REMOVAL AND INSTALLATION

Removal
1
Pull out the front cowl latch.
2
Lift up the rear cowl latch. Remove the top cowl.
Installation
Lower top cowl into position over engine. Push down the rear cowl latch to lock
down the rear and push in the front cowl latch to lock down the front.
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EXTERIOR CARE

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Your outboard is protected with a durable baked enamel finish. Clean and wax
often using marine cleaners and waxes.
GB
FOURSTROKE
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FUEL SYSTEM

Avoid serious injury or death from gasoline fire or explosion. Carefully
follow all fuel system service instructions. Always stop the engine and
DO NOT smoke or allow open flames or sparks in the area while servicing
any part of the fuel system.
Before servicing any part of the fuel system, stop engine and disconnect the
battery. Drain the fuel system completely. Use an approved container to collect
and store fuel. Wipe up any spillage immediately. Material used to contain spillage
must be disposed of in an approved receptacle. Any fuel system service must be
performed in a well ventilated area. Inspect any completed service work for sign
of fuel leakage.
Fuel Line Inspection
Visually inspect the fuel line and primer bulb for cracks, swelling, leaks, hardness,
or other signs of deterioration or damage. If any of these conditions are found, the
fuel line or primer bulb must be replaced.
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FUEL SYSTEM
Engine Fuel Filter
Inspect the sight bowl (b) for water accumulation. The sight bowl is equipped with
a float (d) that floats on water. If water is present, remove sight bowl and drain the
water. Also inspect the filter element (c) for sediment. Clean filter as follows.
Removal
1
Read Fuel System servicing information and Warning on the previous page.
2
Hold onto the cover (a) to prevent it from turning and remove the sight bowl (b).
3
Pull out the filter element (c). Wash it with cleaning solvent and allow it to dry.
Installation
4
Push the filter element into the cover.
5
Reinstall the float (d) into the sight bowl.
6
Place the O-ring seal (e) into its proper position on the sight bowl and screw
the sight bowl hand tight into the cover.
IMPORTANT: Visually inspect for fuel leakage from the filter by squeezing
the primer bulb until firm, forcing fuel into the filter.
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WARNING
90-10225R30