Checking Battery Electrolyte Level

The following procedure can be used to check the electrolyte level in the battery.
1. Remove the battery caps.
2. Look through the battery cap holes to determine the level of the electrolyte in the battery. The electrolyte should be approximately 1 centimeter above the battery plates or until the hook inside the battery cap holes is covered.
3. Add only distilled water until the electrolyte level is approx. one centimeter above the plates.