FORD 2002 F-150 v.1 - Manual (Page 232)

On 4x2 vehicles, it is acceptable to tow the vehicle with the front wheels
on the ground (without dollies) and the rear wheels off the ground.
On 4x4 vehicles, it is recommended that your vehicle be towed with a
wheel lift and dollies or flatbed equipment with all the wheels off the
ground.
If you are towing a NASCAR Special Edition F-150 or a Harley-Davidson
F-150 using flatbed equipment, you must place two 4X4 boards at the
end of the ramp to allow for bumper clearance.
If the vehicle is towed by other means or incorrectly, vehicle
damage may occur.
Ford Motor Company provides a towing manual for all authorized tow
truck operators. Have your tow truck operator refer to this manual for
proper hook-up and towing procedures for your vehicle.
Roadside Emergencies
232