FORD 1999 F-550 v.1 - Manual (Page 127)

Removing key from ignition
• Turn the ignition key until it
stops.
• Push the release lever forward
and rotate the key towards you
and remove.
POWER TAKE OFF (PTO) CAPABILITY (IF EQUIPPED)
Some vehicles with 6.8L and 7.3L engines are equipped with Power Take
Off (PTO) capability. These vehicles have a special transmission case,
internal components and calibration for PTO usage. If your vehicle is
equipped with a 7.3L Diesel engine, refer to the 7.3L Diesel Supplement
for information on the auxiliary powertrain control module (APCM) and
its operation.
The PTO can be used during mobile and stationary
continuous/intermittent applications.
PTO operation is disabled while the vehicle is in Overdrive (the TCIL will
not be illuminated), in N (Neutral), during engine cranking. Transmission
upshift and downshift schedules will be reduced by about 15% and will
have a firmer shift feel during PTO mobile applications.
The PTO cannot be disabled while the transmission is in Manual 3
(Overdrive position with Overdrive canceled), Manual 2, Manual 1.
Refer to the “Body Builder’s Layout Book” for recommended electrical
installation.
Driving
127