Mercury 250 Specifications download pdf (Page 70)

MAINTENANCE

The gearcase has two corrosion control anodes, one on each side.

A third anode is installed on the bottom of the transom bracket

assembly.

27844

a - Anode (2) on each side

of gearcase

b - Anode on transom

bracket assembly

Battery Inspection

The battery should be inspected at periodic intervals to ensure

proper engine starting capability.

IMPORTANT: Read the safety and maintenance instructions

which accompany your battery.

1. Turn off the engine before servicing the battery.

2. Make sure the battery is secure against movement.

3. Battery cable terminals should be clean, tight, and correctly

installed. Positive to positive and negative to negative.

4. Make sure the battery is equipped with a nonconductive shield

to prevent accidental shorting of battery terminals.

Propeller Replacement

WARNING

Rotating propellers can cause serious injury or death. Never

operate the boat out of the water with a propeller installed. Before

installing or removing a propeller, place the drive unit in neutral

and engage the lanyard stop switch to prevent the engine from

starting. Place a block of wood between the propeller blade and

the anti‑ventilation plate.

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Mercury 250 Specifications Page 70