1999 Mercury Villager Owner's Manual - Page 205

Maintenance and care CHANGING THE AIR FILTER ELEMENT 1. Release the four clamps that secure the air filter housing cover. 2. Carefully separate the two halves of the air filter housing. 3. Remove the air filter element from the air filter housing. 4. Install a new air filter element. Be careful not to crimp the filter element edges between the air filter housing and cover. This could cause filter damage and allow unmetered air to enter the engine if not properly seated. 5. Replace the air filter housing cover and secure the four clamps. BATTERY Your vehicle is equipped with a Motorcraft maintenance-free battery which normally does not require additional water during its life of service. However, for severe usage or in high temperature climates, check the battery electrolyte level. Refer to the Scheduled Maintenance Guide for the service interval schedules. Keep the electrolyte level in each cell up to the "level indicator". Do not overfill the battery cells. 205