FORD 2002 F-250 - Manual (Page 117)

Engage or disengage the 4WD system by:
• rotating the control for both front wheel hub locks from the FREE or
LOCK position, then
• manually engage or disengage the transfer case with the floor-mounted
shifter
For increased fuel economy in 2WD, rotate both hub locks to the FREE
position.
For proper operation, make sure that the arrow and the indicator
dot on the hub are aligned, and that both hub locks are set to the
same position (both set to LOCK or both set to FREE).
Using a manual 4WD system (if equipped)
2H (2WD High) – Power to the rear wheels only; used for street and
highway driving.
4H (4WD High) – Used for extra traction such as in snow or icy roads
or in off-road situations. Not intended for use on dry pavement.
N (Neutral) – No power to either front or rear wheels.
4L (4WD Low)– Uses extra gearing to provide maximum power to all
four wheels at reduced speeds. Intended only for off-road applications
such as deep sand, steep grades or pulling heavy objects. 4L (4WD Low)
will not engage while the vehicle is moving; this is normal and should be
no reason for concern. Refer to Shifting to/from 4L (4WD Low) for
proper operation.
Shifting between 2H (2WD high) and 4H (4WD high)
• Move the transfer case lever to 4H (4WD High) at a stop or any
forward speed up to 88 km/h (55 mph).
Note: Do not perform this operation at speeds above 72 km/h (45 mph)
if the outside temperature is below 0°C (32°F).
2H
4H
4L
N
Driving
117