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

Section 3 - On The Water

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

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.
Page 44
BEFORE STARTING

Operation Chart

AFTER STARTING
UNDERWAY
Observe all gauges to Observe all gauges
check condition of to check condition of
engine. If not normal, engine. If not
stop engine. normal, stop engine.
Check for fuel, oil,
Listen for the audio
water, fluid and
alarm.
exhaust leaks.
Check shift and
throttle control
operation.
Check steering
operation.
WHILE
AFTER STOPPING
Turn ignition key to the
"OFF" position.
Turn battery switch to the
"OFF" position.
Close fuel shut off valve.
Close seacock, if
equipped.
Flush cooling system if in
saltwater.
Drain bilge.
90-899883234 JANUARY 2008