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MerCruiser 350 MAG MPI User Manual

MerCruiser 350 MAG MPI
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Section 3 - On The Water
90-864195070 JUNE 2007 Page 45
Operation Chart
BEFORE STARTING AFTER STARTING WHILE UNDERWAY AFTER STOPPING
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.
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: Only perform 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.
3. Turn ignition key to "START". Release key when engine starts and allow switch to return
to "ON" position. Allow engine to warm up (6‑10 minutes on first start of the day).
4. If engine does not start after 3 attempts:
a. Push the throttle only button and position the remote control handle/throttle lever
to the 1/4 throttle position.
b. Turn ignition key to "START". Release key when engine starts and allow switch
to return to "ON" position.
5. If engine does not start after step 4:
a. Move the remote control handle/throttle lever to full throttle position, then return
to 1/4 throttle.
b. Turn ignition key to "START". Release key when engine starts and allow switch
to return to "ON" position.
6. Inspect the power package for fuel, oil, water and exhaust leaks.

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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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