Battery Storage; Power Package Recommissioning - MerCruiser Sterndrive 4.3 MPI User Manual

3. 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
IMPORTANT: Mercury MerCruiser requires that propylene glycol antifreeze, mixed to the
manufacturers instructions, be used in the seawater section of the cooling system for
freezing temperatures or extended storage. Make sure that the propylene glycol antifreeze
contains a rust inhibitor and is recommended for use in marine engines. Be certain to follow
the propylene glycol manufacturer's recommendations.

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.

Power Package Recommissioning

1. Ensure that all cooling system hoses are connected properly and hose clamps are tight.
Reversing the battery cables or connection order will damage the electrical system. When
installing the battery, be sure to connect the positive (+) battery cable to the positive (+)
battery terminal first, and the negative (–) battery cable to the negative (–) battery terminal
second.
2. Install a fully charged battery. Clean the battery cable clamps and terminals and
reconnect cables. Tighten each cable clamp securely when connecting.
3. Coat the terminal connections with a battery terminal anti‑corrosion agent.
4. Perform all the checks in the before starting column of the Operation Chart.
Overheating from insufficient cooling water will cause engine and drive system damage.
Ensure that there is sufficient water always available at water inlet holes during operation.
5. Start the engine and closely observe instrumentation to ensure that all systems are
functioning correctly.
6. Carefully inspect the engine for fuel, oil, fluid, water and exhaust leaks.
7. Inspect the steering system, shift and throttle control for proper operation.
90-864195061 NOVEMBER 2006
CAUTION
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CAUTION
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Section 6 - Storage
Page 129