FORD 1998 F-150 - Manual (Page 129)

either full left or full right to
provide maximum airflow to the
radiator.
If you are driving less than 24 km
(15 miles) at speeds up to 64 km/h
(40 mph) in cold weather, you will
not need to worry about blade
position to provide maximum
airflow.
Transmission operation while
plowing
• Shift transfer case to 4L (4WD
Low) when plowing in small
areas at speeds below 8 km/h
(5 mph).
• Shift transfer case to 4H (4WD
High) when plowing larger areas
or light snow at higher speeds.
Do not exceed 24 km/h
(15 mph).
• Do not shift the transmission
from a forward gear to R
(Reverse) until the engine is at
idle and the wheels are stopped.
• If the vehicle is stuck, shift the
transmission in a steady motion
between forward and reverse
gears. Do not rock the vehicle
for more than a few minutes.
The transmission and tires may
be damaged or the engine can
overheat.
Do not spin the wheels at
over 35 mph (55 km/h).
The tires may fail and injure a
passenger or bystander.
Driving
129