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MerCruiser 350 MAG MPI Horizon Owner's Manual

MerCruiser 350 MAG MPI Horizon
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Section 6 - Storage
90-864197070 JUNE 2007 Page 83
8. For additional assurance against freezing and rust, after draining, fill the seawater
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.
9. 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 liter (6 U.S.gal.) remote fuel tank mix:
a. 19 liter (5 U.S. gal) regular unleaded 87 octain (90 RON) gasoline
b. 1.89 liter (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.
3. Close the fuel shut off valve, if equipped. Disconnect and plug the fuel inlet fitting if not
equipped with a fuel shut off valve.
4. Connect the remote fuel tank (with the fogging mixture) to the fuel inlet fitting.
IMPORTANT: Supply cooling water to the engine.
5. Start and operate the engine at 1300 rpm for 5 minutes.
6. After specified operating time is complete, slowly return throttle to idle rpm and shut
engine off.
IMPORTANT: Ensure that some fogging mixture remains in the engine. Do not allow the
engines fuel system to become completely dry.
7. Replace the water separating fuel filter element. Refer to Section 5 for proper
procedure.

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MerCruiser 350 MAG MPI Horizon Specifications

General IconGeneral
BrandMerCruiser
Model350 MAG MPI Horizon
CategoryEngine
LanguageEnglish

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