Draining Water From The Gen Iii Cool Fuel Module; Battery Storage; Recommissioning The Power Package - Mercury 4.3 MPI SeaCore Operation & Maintenance Manual

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Section 5 - Storage
1.
Place the boat on a level surface to ensure complete draining of the system.
2.
Remove three blue drain plugs: one from the distribution housing (lower front, port side) and two from the seawater pickup
pump (front, starboard side).
a -
Blue drain plug
3.
Verify that water is draining from each opening.
4.
Allow the system to drain for a minimum of five minutes. We recommend leaving the drain system open while transporting
the boat or performing other maintenance to ensure that all water is drained.
5.
Crank the engine over slightly with the starter motor to purge any water trapped in the seawater pickup pump. Do not allow
the engine to start.
6.
Before launching the boat or starting the engine, close the drain system by installing the three blue drain plugs.

Draining Water from the Gen III Cool Fuel Module

Mercury MerCruiser recommends draining the Gen III Cool Fuel Module if it is equipped with a drain plug.
1.
Remove the drain plug from the Gen III Cool Fuel Module and allow the water to completely drain from the module.
2.
Inspect the drain plug and the O‑ring for damage. Replace if needed.
3.
Place the O‑ring on the drain plug and install the drain plug in the module drain hole. Tighten the drain plug to finger‑tight.

Battery Storage

Whenever the battery will be stored for an extended period of time, be sure the cells are full of water and the battery is fully
charged and in good operating condition. It should be clean and free of leaks. Follow the battery manufacturer's instructions for
storage.

Recommissioning the Power Package

1.
Ensure that all cooling system hoses are connected properly and hose clamps are tight.
Disconnecting or connecting the battery cables in the incorrect order can cause injury from electrical shock or can damage
the electrical system. Always disconnect the negative (‑) battery cable first and connect it last.
2.
Install a fully charged battery. Clean the battery cable clamps and terminals and reconnect the cables. Tighten each cable
clamp securely when connecting.
Page 102
a
a
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c
c
d
CAUTION
!
a
6142
a -
Gen III Cool Fuel Module
b -
Fuel in‑line fitting
c -
Drain plug
d -
O‑ring
43648
90-8M0113859
DECEMBER 2015
eng

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