Mercury 1999 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.
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