Getting Started; 20-Hour Break-In Period; Launching And Boat Operation; Operation Chart - Mercury MerCruiser Axius 350 MAG User Manual

With emissions control
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Section 3 - On The Water
Warmer weather and greater humidity cause a loss of RPM.
Operating in a higher elevation causes a loss of RPM.
Operating with a dirty boat bottom causes a loss of RPM.
Operating with increased load (additional passengers, pulling skiers) causes a loss of RPM.
For better acceleration, such as is needed for water skiing, use the next lower pitch propeller. When not pulling skiers, do not
operate at full throttle when using the lower pitch propeller.

Getting Started

20‑Hour Break‑In Period
IMPORTANT: The first 20 hours of operation is the engine break‑in period. Correct break‑in is essential to obtain minimum oil
consumption and maximum engine performance. During this break‑in period, the following rules must be observed:
Do not operate below 1500 RPM for extended periods of time for the first 10 hours. Shift into gear as soon as possible after
starting and advance the throttle above 1500 rpm if conditions permit safe operation.
Do not operate at one speed consistently for extended periods.
Do not exceed 3/4 throttle during the first 10 hours. During the next 10 hours, occasional operation at full throttle is permissible
(5 minutes at a time maximum).
Avoid full throttle acceleration from idle speed.
Do not operate at full throttle until the engine reaches normal operating temperature.
Frequently check engine oil level. Add oil as needed. It is normal for oil consumption to be high during the break‑in period.

Launching and Boat Operation

IMPORTANT: Install bilge drain plug prior to launching boat.

Operation Chart

BEFORE STARTING
Install bilge drain plug.
Open engine hatch.
Turn battery switch on.
Operate bilge blowers.
Open fuel shut off valve.
Open seacock, if equipped.
Close the drain system.
Place sterndrive unit in full down/in position.
Check the engine oil.
Perform all other checks specified by your
dealer and/or boat builder.
Listen for Audio Warning Alarm to sound
when the ignition switch is in the "ON"
position.

Starting and Stopping the Engine

NOTE: Perform only those functions applicable to your power package.

Starting the Engine

1.
Check all items listed in the Operation Chart.
Page 42

Operation Chart

AFTER STARTING
Observe all gauges to
check condition of engine.
If not normal, stop engine.
Check for fuel, oil, water,
fluid and exhaust leaks.
Check shift and throttle
control operation.
Check steering operation.
WHILE UNDERWAY
Observe all gauges to
check condition of
Turn ignition key to the
engine. If not normal,
"OFF" position.
stop engine.
Listen for the audio
Turn battery switch to the
alarm.
"OFF" position.
Close fuel shut off valve.
Close seacock, if equipped.
Flush cooling system if in
saltwater.
Drain bilge.
90-864197084 NOVEMBER 2008
AFTER STOPPING

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