Engine And Fuel System Preparation; Draining The Seawater System - MerCruiser Sterndrive 4.3 MPI User Manual

ENGINE AND FUEL SYSTEM PREPARATION

Avoid serious injury or death from a gasoline fire or explosion; gasoline is extremely
flammable and highly explosive under certain conditions. When servicing the fuel system
components ensure that the engine is cool, the ignition switch is in the off position, and
that the lanyard stop switch, if equipped, is in the off position. Do not smoke or allow
spark or open flame in the area. Wipe up any spilled fuel immediately. Ensure that no
fuel leaks exist before closing the engine hatch.
Fuel vapors can be present in the engine compartment. Avoid injury or power package
damage caused by fuel vapors or explosion. Always ventilate the engine compartment
prior to servicing the power package.
1. In a 23 liter (6 U.S.gal.) remote fuel tank mix:
a.
b.
c.
Tube Ref No.
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.

Draining the Seawater System

Excess water in the bilge can damage the engine or cause the boat to sink. Ensure that
the boat is out of the water, the seacock is closed (if equipped) or the seawater inlet hose
is disconnected and plugged on both ends, and the bilge pump is operating before
beginning the draining procedure.
90-864195061 NOVEMBER 2006
19 liter (5 U.S. gal) regular unleaded 87 octain (90 RON) gasoline
1.89 liter (2 U.S. qts.) Premium Plus 2‑Cycle TC‑W3 Outboard Oil
150 ml (5 ounces) Fuel System Treatment and Stabilizer or 30 ml (1 ounce) Fuel
System Treatment and Stabilizer Concentrate
Description
Premium Plus 2-cycle TC-W3
115
Outboard Oil
Fuel System Treatment &
124
Stabilizer
WARNING
!
WARNING
!
Where Used
Fuel system
Fuel system
CAUTION
!
Section 6 - Storage
Part No.
92-802824A1
802875A1
Page 115