Ford 2006 F-250 Owner's Manual page 217

If the vehicle slips off the jack, you or someone else could be
seriously injured.
The following steps apply to F–250/F–350 Single Rear Wheel
(SRW) vehicles only (unless otherwise noted):
6. Insert the hooked end of the jack
handle into the jack and use the
handle to slide the jack under the
vehicle.
7. Position the jack according to the
following guides:
• Front (4x2)
• Front driver side (4x4)
Note: Make sure the jack fits onto
the flat area on the outboard side of
the differential.
2006 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus)
Roadside Emergencies
217