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MerCruiser 350 MAG MPI User Manual

MerCruiser 350 MAG MPI
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Section 6 - Storage
Page 124 90-864195070 JUNE 2007
7. Verify that water is draining from each opening. If not, use the Three Point Manual
Drain System instructions.
a
6133
b
a - Port side drain location b - Starboard side drain location
8. Allow the system to drain for a minimum of five minutes. Pump air as necessary to keep
the green indicators extended.
9. Crank the engine over slightly with starter motor to purge any water trapped in the
seawater pump. Do not allow engine to start.
10. Remove the air pump from the air manifold and return it to the mounting bracket.
11. Mercury MerCruiser recommends leaving the drain system open while transporting the
boat or while performing other maintenance. This helps ensure that all water is drained.
12. Before launching the boat, pull up on the manual release valve. Verify that the green
indicators are no longer extended.
a
6135
a - Green indicators
Manual Single Point Drain System
BOAT IN THE WATER
1. Close the seacock (if equipped) or remove and plug the water inlet hose.
2. Rotate the blue handle counterclockwise until it stops (approximately two turns). The
red on the handle shaft indicates that the drain system is open. Do not force the handle
as this will create new threads.

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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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