Trim Tab Adjustment; Operation; Pre-Starting Check List; Operating In Freezing Temperatures - Mercury 115 Manuam

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FEATURES & CONTROLS
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TRIM TAB ADJUSTMENT

Propeller steering torque will cause your boat to pull in one direction. This steering
torque is a normal thing that results from your outboard not being trimmed so the
propeller shaft is parallel to the water surface. The trim tab can help to compensate
for this steering torque in many cases and can be adjusted within limits to reduce
any unequal steering effort.
Note: Trim tab adjustment will have little effect reducing steering torque if the
outboard is installed with the anti-ventilation plate approximately 2 inches (50mm)
or more above the boat bottom.
Operate your boat at normal cruising speed, with the outboard set at the desired
transom angle adjustment. Turn your boat left and right and note the direction the
boat turns more easily
If adjustment is necessary, loosen trim tab bolt and make small adjustments at a
time. If the boat turns more easily to the left, move the trailing edge of trim tab to
the left. If the boat turns more easily to the right move the trailing edge of trim tab
to the right. Retighten bolt and retest.
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OPERATION

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PRE-STARTING CHECK LIST

j Operator knows safe navigation, boating, and operating procedures.
j An approved personal flotation device of suitable size for each person aboard
and readily accessible (it is the law).
j A ring type life buoy or buoyant cushion designed to be thrown to a person in
the water.
j Know your boats maximum load capacity. Look at the boat capacity plate.
j Fuel supply OK.
j Arrange passengers and load in the boat so the weight is distributed evenly and
everyone is seated in a proper seat.
j Tell someone where you are going and when you expect to return.
j It is illegal to operate a boat while under the influence of alcohol or drugs.
j Know the waters and area you will be boating; tides, currents, sand bars, rocks,
and other hazards.
j Make inspection checks listed in the Inspection and Maintenance Schedule.
Refer to Maintenance Section.
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OPERATING IN FREEZING TEMPERATURES

When using your outboard or having your outboard moored in freezing or near
freezing temperature, keep the outboard tilted down at all times so the gear case
is submerged. This prevents trapped water in gear case from freezing and causing
possible damage to the water pump and other components.
If there is a chance of ice forming on the water, the outboard should be removed
and drained completely of water. If ice should form at the water level inside the
outboard drive shaft housing, it will block water flow to the engine causing possible
damage.
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OPERATING IN SALT WATER OR POLLUTED WATER

We recommend that you flush the internal water passages of your outboard with
fresh water after each use in salt or polluted water. This will prevent a buildup of
deposits from clogging the water passages. Refer to "Flushing The Cooling
System" procedure in the Maintenance Section.
If you keep your boat moored in the water, always tilt the outboard so the gear case
is completely out of water (except in freezing temperature) when not in use.
Wash down the outboard exterior and flush out the exhaust outlet of the propeller
and gear case with fresh water after each use. Each month, spray Mercury
Precision or Quicksilver Corrosion Guard on external metal surfaces (do not spray
on corrosion control anodes as this will reduce the effectiveness of the anodes).
90-10225R30
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ENGINE BREAK-IN PROCEDURE

Severe damage to the engine can result by not complying with the follow-
ing Engine Break-in Procedure.
1. For the first hour of operation, run the engine at varied throttle settings not
exceeding 3500 RPM or at approximately half throttle.
2. For the second hour of operation, run the engine at varied throttle settings up
to 4500 RPM or at three-quarter throttle, and during this period of time run it
at full throttle for approximately one minute every ten minutes.
3. For the next eight hours of operation, avoid continuous operation at full throttle
for more than five minutes at a time.
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STARTING THE ENGINE – REMOTE CONTROL MODELS
Before starting, read the Pre-Starting Check List, Special Operating Instructions,
and Engine Break-in Procedure on the first three pages in the Operation Section.
Never start or run your outboard (even momentarily) without water circu-
lating through all the cooling water intake holes in the gear case to pre-
vent damage to the water pump (running dry) or overheating of the en-
gine.
1
Check the engine oil level.
2
Make sure the cooling water intake is submerged.
3
Open fuel tank vent screw (in filler cap) on manual venting type fuel tanks.
4
Squeeze the fuel line primer bulb several times until it feels firm.
5
Set the lanyard stop switch to RUN position. Read the Lanyard Stop Switch
safety explanation and Warning in the General Information Section.
6
Shift outboard to neutral (N) position.
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CAUTION
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N
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CAUTION
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