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MerCruiser 350 MAG MPI Owner's Manual

MerCruiser 350 MAG MPI
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Section 3 - On The Water
90-864197070 JUNE 2007 Page 41
Operation Chart
BEFORE STARTING AFTER STARTING WHILE UNDERWAY AFTER STOPPING
Open engine hatch.
Check for fuel, oil, water,
fluid and exhaust leaks.
Listen for the audio alarm.
Turn battery switch to the
"OFF" position.
Turn battery switch on.
Check shift and throttle
control operation.
Close fuel shut off valve.
Operate bilge blowers. Check steering operation.
Close seacock, if
equipped.
Open fuel shut off valve.
Flush cooling system if in
saltwater.
Open seacock, if
equipped.
Drain bilge.
Close the drain system.
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.
2. Place the remote control handle in neutral.
NOTICE
Failure to provide sufficient cooling water will damage the water pump and cause the
engine to overheat. Provide a sufficient supply of water at the water inlets during
operation.
!
WARNING
Explosive fumes contained in the engine compartment can cause serious injury or death
from fire or explosion. Before starting the engine, operate the bilge blower or vent the
engine compartment for at least five minutes.
NOTE: MerCruiser DTS models are equipped with SmartStart. The SmartStart feature
incorporates push button starting. Rather than holding the start button or key switch to start
the engine and then releasing it when the engine starts, SmartStart completely controls
the starting process. When the start button is pushed, the DTS system signals the engine
PCM to start the engine. If the engine does not start, the starting process times out after a
few seconds or when the engine reaches 400 RPM. Attempting to start the engine with the
engine already running will turn the engine off.
3. Turn ignition key to "RUN" position.
4. Turn the ignition key switch to the "START" position then release, or depress the start/
stop button and release. If the engine is cold, allow the engine to operate at idle for
6‑10 minutes or until the engine temperature reaches 60 °C (140 °F).
5. If the engine does not start after three attempts:

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MerCruiser 350 MAG MPI Specifications

General IconGeneral
Engine TypeV8
Horsepower300 HP
Ignition SystemElectronic ignition
Alternator65 amp
Compression Ratio9.4:1
Displacement5.7L (350 cu in)
Fuel SystemMulti-Point Injection (MPI)
Bore x Stroke4.00" x 3.48" (101.6mm x 88.39mm)

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