Ford 2006 F-250 Owner's Manual page 179

To start the vehicle:
1. Make sure the parking brake is fully set.
2. Press the clutch pedal to the floor, then put the gearshift lever in the
neutral position.
3. Start the engine, then press the brake pedal and release the parking
brake.
4. Move the gearshift lever to 1 (First) gear, then slowly release the
clutch pedal while slowly pressing on the accelerator.
During each shift, the clutch pedal must be fully depressed to the floor.
Failure to fully depress the clutch pedal to the floor may cause increased
shift efforts, prematurely wear transmission components or damage the
transmission. Make sure the floor mat is properly positioned so it doesn't
interfere with the full extension of the clutch pedal.
Do not drive with your foot resting on the clutch pedal or use the clutch
pedal to hold your vehicle at a standstill while waiting on a hill. These
actions will reduce the life of the clutch.
Recommended shift speeds
Do not overspeed the engine when going downhill or steep grades. If
equipped, use the tachometer and do not allow engine speed to exceed
the redline area. Operating the engine beyond the recommended speeds
can cause severe engine damage.
Shift according to the following shift speed charts:
Upshifts when accelerating
(recommended for best fuel economy)
Shift from:
LO-1
1-2
2-3
3-4
4 - (Overdrive)
D
2006 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus)
6-speed transmission
Transfer case position
2H or 4H
5 mph (8 km/h)
15 mph (24 km/h)
22 mph (35 km/h)
30 mph (48 km/h)
40 mph (64 km/h)
Driving
1
(if equipped)
4L
2 mph (3 km/h)
6 mph (10 km/h)
9 mph (14 km/h)
12 mph (19 km/h)
15 mph (24 km/h)
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