1. Attention: always disconnect the negative cable first.
2. Release the battery holders.
3. Lift up the battery.
4. With the battery removed, inspect its installation area (tray) for corrosion.
5. If corrosion has penetrated the tray brackets, unscrew the bracket fasteners, remove the bracket and clean it of rust.
6. When replacing the battery, make sure that the old and new batteries are identical (size, capacity and discharge current).
7. Install in the reverse order of removal.