1. Record the installed orientation of the battery (positions of the positive (+) and negative (–) terminals).
2. First, loosen the nut on the vehicle’s negative (–) cable terminal (there may be two terminals), and remove the cable terminal from the battery’s negative terminal (see illustration on the right).
3. Next, remove the terminal cover from the vehicle’s positive (+) cable terminal, loosen the nut, and remove the cable terminal from the battery’s positive terminal.
4. If the vehicle is equipped with a fluid-level sensor, record its mounting position (where it was installed on the battery), and remove it from the battery. Electrolyte may adhere to the removed fluid-level sensor, so cover it with a cloth to prevent contact with the vehicle.
5. Loosen the battery mounting bracket and remove the battery while keeping it level (see illustration on the right).
   • For batteries from which the fluid-level sensor has been removed, handle them carefully to avoid spilling electrolyte.
   • The battery is heavy—be careful to prevent dropping or injuring yourself when moving it.
   • Used batteries are recycled as raw materials. Do not discard them as-is; consult the retailer where you purchased the new battery.
   • If the cable terminals are corroded, clean them using a wire brush or fine-grit sandpaper.

1. Confirm that there are no foreign objects on the battery tray. Place the new battery on the tray so that the positive (+) and negative (–) terminals match the orientation of the removed battery. Secure the battery firmly with the mounting bracket so that it does not move (see illustration on the right).
   For B-size and D-size batteries equipped with a carrying handle:
   Set the battery in its designated position, and remove the handle before securing with the mounting bracket.
   For B-size batteries, slide the handle downward along the short side of the battery.
   For D-size batteries, twist the handle attachment to remove it.
2. If the old battery had a fluid-level sensor, install it in the same position on the new battery.
3. Attach the vehicle’s positive (+) cable terminal to the battery’s positive terminal, and tighten the nut securely (see illustration on the right).
4. Reinstall the terminal cover onto the vehicle’s cable terminal.
5. Next, attach the vehicle’s negative (–) cable terminal to the battery’s negative terminal and tighten the nut securely.
6. To prevent rust on the metal parts of the cable terminals, apply a thin layer of grease—it is effective in preventing corrosion.
   For vehicles equipped with an electronic lock, the lock may automatically engage once the replacement battery is installed after removal of old battery.
   Be sure to remove the key and keep the windows open while working.

1. If a vent tube from the vehicle is connected, remove the vent tube from the battery’s vent hole. (Figure 1)
2. Record the installed orientation of the battery (positions of the positive (+) and negative (–) terminals).
3. First, loosen the nut on the vehicle-side negative (–) cable terminal (including cases where two terminals are installed), and remove the cable terminal from the battery’s negative terminal. (Figure 2)
4. Next, remove the terminal cover from the vehicle-side positive (+) cable terminal, loosen the nut, and remove the cable terminal from the battery’s positive terminal.
5. If the vehicle is equipped with a fluid-level sensor, record its mounting position (where it was installed on the battery) and remove it.
   Since electrolyte may adhere to the removed fluid-level sensor, cover it with a cloth to prevent contact with the vehicle.
6. Loosen the battery mounting bracket and remove the battery while keeping it level. (Figure 2)
   • For batteries from which the fluid-level sensor has been removed, take care to prevent electrolyte spillage.
   • Batteries are heavy; use caution to prevent dropping or injury when moving them.
   • Used batteries are recycled as raw materials. Do not dispose of them as-is; consult the retailer where you purchased the new battery.
   • If the cable terminals are corroded, clean them using a wire brush or fine-grit sandpaper.

If a vent tube from the vehicle is connected, remove the gas vent tube from the vent hole of the old battery when replacing the battery, and install it into the vent hole of the new battery.
Be sure to install the gas vent tube so that hydrogen gas is discharged to the outside of the vehicle. (Figure 3)
Seal the gas vent hole on the opposite side that is not used for gas venting with the included vent port cap. (Figure 3)

1. If a vent tube from the vehicle is connected, remove the vent tube from the battery’s vent hole. (Figure 1)
2. Record the installed orientation of the battery (positions of the positive (+) and negative (–) terminals).
3. First, loosen the nut on the vehicle-side negative (–) cable terminal (including cases where two terminals are installed), and remove the cable terminal from the battery’s negative terminal. (Figure 2)
4. Next, remove the terminal cover from the vehicle-side positive (+) cable terminal, loosen the nut, and remove the cable terminal from the battery’s positive terminal.
5. If the vehicle is equipped with a fluid-level sensor, record its mounting position (where it was installed on the battery) and remove it. Since electrolyte may adhere to the removed fluid-level sensor, cover it with a cloth to prevent contact with the vehicle.
6. Loosen the battery mounting bracket and remove the battery while keeping it level. (Figure 2)
   • For batteries from which the fluid-level sensor has been removed, take care to prevent electrolyte spillage.
   • Batteries are heavy, so when moving them, take care to prevent dropping or other accidents.
   • Used batteries are recycled as raw materials. Do not dispose of them as waste; consult the retailer where you purchased the new battery.
   • If the cable terminals are corroded, clean them using a wire brush or fine-grit sandpaper.

1. Confirm that there are no foreign objects on the battery tray. Place the new battery on the tray so that the positive (+) and negative (–) terminals are in the same positions as those of the removed battery, and secure it firmly with the mounting bracket so that it does not move. (Figure 2)
2. If the old battery was equipped with a fluid-level sensor, reinstall it in the original position.
3. Attach the vehicle-side positive (+) cable terminal to the battery’s positive terminal and tighten the nut securely. (Figure 2)
4. Next, attach the vehicle-side negative (–) cable terminal to the battery’s negative terminal and tighten the nut securely.
5. Applying a thin layer of grease to the metal parts of the cable terminals is effective for preventing corrosion.
6. Reinstall the terminal cover onto the vehicle-side positive (+) cable terminal. Vehicles equipped with an electronic locking system may automatically lock the doors once the replacement battery is installed after removal of old battery.
   When performing this work, always remove the key and keep the windows open.

If a vent tube from the vehicle is connected, remove the gas vent tube from the vent hole of the old battery when replacing the battery, and install it into the vent hole of the new battery.
Be sure to install the gas vent tube so that hydrogen gas is discharged to the outside of the vehicle. (Figure 3)
If the vehicle’s vent tube does not reach the battery’s gas vent hole, use the vent extension tube to connect it to the vent hole.