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MerCruiser 350 MAG MPI User Manual

MerCruiser 350 MAG MPI
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Section 6 - Storage
90-864195070 JUNE 2007 Page 117
NOTICE
Water trapped in the seawater section of the cooling system can cause corrosion or
freeze damage. Drain the seawater section of the cooling system immediately after
operation or before any length of storage in cold weather. If the boat is in the water, keep
the seacock closed until restarting the engine to prevent water from flowing back into the
cooling system. If the boat is not fitted with a seacock, leave the water inlet hose
disconnected and plugged.
9. Ensure that the sterndrive vent holes and water drain holes and passages are
unobstructed and open (refer to Draining Instructions).
10. For additional assurance against freezing and rust, after draining, fill the cooling system
with propylene glycol mixed to the manufacturer's recommendation to protect engine
to the lowest temperature to which it will be exposed during freezing temperatures or
extended storage.
NOTICE
The universal joint bellows may develop a set when stored in a raised or up position,
causing the bellows to fail when returned to service and allowing water to enter the boat.
Store the sterndrive in the full down position.
11. Store boat with drive unit in full down/in position.
12. Store the battery according to the manufacturer's instructions.
ENGINE AND FUEL SYSTEM PREPARATION
!
WARNING
Fuel is flammable and explosive. Ensure the key switch is off and the lanyard is positioned
so that the engine cannot start. Do not smoke or allow sources of spark or open flame in
the area while servicing. Keep the work area well ventilated and avoid prolonged
exposure to vapors. Always check for leaks before attempting to start the engine and
wipe up any spilled fuel immediately.
!
WARNING
Fuel vapors trapped in the engine compartment may be an irritant, cause difficulty
breathing, or may ignite resulting in a fire or explosion. Always ventilate the engine
compartment before servicing the power package.
1. In a 23 L (6 U.S. gal.) remote fuel tank mix:
a. 19 L (5 U.S. gal) regular unleaded 87 octane (90 RON) gasoline
b. 1.89 L (2 U.S. qts.) Premium Plus 2‑Cycle TC‑W3 Outboard Oil
c. 150 mL (5 ounces) Fuel System Treatment and Stabilizer or 30 mL (1 ounce) Fuel
System Treatment and Stabilizer Concentrate
Tube Ref No. Description Where Used Part No.
115
Premium Plus 2-cycle TC-W3
Outboard Oil
Fuel system 92-802824A1
124
Fuel System Treatment &
Stabilizer
Fuel system 802875A1
2. Allow the engine to cool down.
IMPORTANT: Immediately wipe up any fuel spills or sprays.

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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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