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Mercury 2.5 Manual

Mercury 2.5
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90-10100R30
10
GB
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FUEL & OIL
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GASOLINE RECOMMENDATIONS
United States and Canada
Use a major brand of automotive unleaded gasoline with a minimum posted octane
rating of 87. Mid-grade automotive gasolines that contain fuel injector cleaner are
preferred for added internal engine cleanliness. Leaded gasoline is not
recommended.
International
Use a major brand of automotive unleaded gasoline with a minimum posted octane
rating of 90RON. Automotive gasolines that contain fuel injector cleaner are
preferred for added internal engine cleanliness. Leaded gasoline is acceptable in
areas where unleaded gasoline is not available.
Alcohol in Gasoline
We do not recommend the use of gasoline which contains alcohol because of the
possible adverse effect the alcohol may have on the fuel system. In general, if only
gasoline containing alcohol is available, it must not contain more than 10% ethanol
or 5% methanol, and the addition of a Water Separating Fuel Filter is
recommended.
If gasoline containing alcohol is used or if you suspect the presence of alcohol in
your gasoline, increase your inspection of the fuel system, visually checking for
fuel leaks or abnormalities.
Gasoline containing alcohol may cause the following problems to your outboard
and fuel system:
Corrosion of metal parts.
Deterioration of elastomers and plastic parts.
Wear and damage of internal engine parts.
Starting and operating difficulties.
Vapor lock or fuel starvation.
Some of these adverse effects are due to the tendency of gasoline containing
alcohol to absorb moisture from the air, resulting in a phase of water and alcohol
which separates from the gasoline in the fuel tank.
The adverse effects of alcohol are more severe with methanol and are worse with
increasing content of alcohol.
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OIL RECOMMENDATION
Mercury or Quicksilver Premium TCW3 2cycle oil is recommended for your
engine. For added protection and lubrication, Mercury or Quicksilver Premium
Plus TCW3 2cycle oil is recommended. If Mercury or Quicksilver is not
available, substitute another brand of 2cycle outboard oil that is NMMA Certified
TCW3. Severe engine damage may result from use of an inferior oil.
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NEW ENGINE GASOLINE/OIL BREAK-IN MIXTURE
Use a 25:1 (4%) gasoline/oil mixture in the first tank of fuel.
After the break-in fuel mixture is used up, use a 100:1 (1%) gasoline/oil mixture
in engines used for pleasure applications. To provide additional protection for
commercially used products, a 50:1 (2%) gasoline/oil mixture is recommended.
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Gasoline/Oil Mixing Ratio Chart
Gas/Oil
Ratio
5 Liters Gas
10 Liters Gas 20 Liters Gas
25:1 (4%) 200 ml Oil 400 ml Oil 800 ml Oil
50:1 (2%) 100 ml Oil 200 ml Oil 400 ml Oil
100:1 (1%) 50 ml Oil 100 ml Oil 200 ml Oil
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Mixing Procedure
Pour the full amount of oil along with approximately one gallon of gasoline into an
approved container. Shake the two together until they are thoroughly mixed. Add
the remainder of gasoline and shake container to ensure mixing.
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FILLING FUEL TANK
WARNING
Avoid serious injury or death from a gasoline fire or explosion. Always
stop the engine and DO NOT smoke or allow open flames or sparks in
the area while filling fuel tanks.
Internal Fuel Tank
Fill fuel tank outdoors away from heat, sparks, and open flames.
Always stop engine before refilling tank.
Do not overfill the fuel tank. Fuel will expand in volume as its temperature rises and
can leak under pressure.
The oil and fuel mixture should always be thoroughly mixed in an approved
container before pouring into motor fuel tank. Do not pour separately into fuel tank.
Pour fuel into tank through a fine mesh strainer to remove dirt which may be
present.
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1
2
3
4
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FEATURES & CONTROLS
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FEATURES & CONTROLS
1
Throttle Lever Move to start position for starting. Move lever up to increase
engine speed and down to reduce engine speed.
2 Choke Lever Move up to the closed position for starting a cold engine. Move
halfway down as engine is warming up. Move down to the open position after
engine is warmed up.
3 Engine Stop Switch/Lanyard Stop Switch Push in or pull lanyard to stop
engine. The engine will not start unless the lanyard is engaged with the stop
switch.
4 Lanyard Read the Lanyard Stop Switch safety explanation and Warning in
the General Information Section.
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57
6
a
b
a
b
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FEATURES & CONTROLS
5
Fuel Shut-Off Knob Turn knob clockwise (a) to open fuel line and turn
counterclockwise to close (b).
6 Steering Friction Adjustment Adjust this knob to achieve the desired steering
friction (drag) on the tiller handle. Move knob towards (a) to tighten friction and
move knob towards (b) to loosen friction.
WARNING
Avoid possible serious injury or death from loss of boat control. Main-
tain sufficient steering friction to prevent the outboard from steering
into a full turn if the tiller handle is released.
7 Side Handle Gear Shift (if equipped) Controls gear shift.
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2-3
1
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TILTING OUTBOARD TO FULL UP POSITION
1
Stop the engine. Take hold of the top cowl grip and raise outboard to the full up
position.
2 Push in the tilt support pin. Lower the outboard to rest on the tilt support pin.
LOWERING OUTBOARD DOWN TO RUN POSITION
3
Lift outboard and pull out the tilt support pin. Lower the outboard.

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Mercury 2.5 Specifications

General IconGeneral
BrandMercury
Model2.5
CategoryOutboard Motor
LanguageEnglish

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