1. Park your F-250 on a level surface and engage the parking brake.
2. Open the hood of your F-250.
3. Locate the transmission shifter cable, which is typically attached to the side of the transmission.
4. Identify the adjustment mechanism on the shifter cable. This may be a turnbuckle, a threaded stud, or a series of nuts and bolts.
5. NOTE: Some models may have a self-adjusting shifter, in which case no adjustments are required.
6. If you have a turnbuckle, use a wrench to turn the barrel of the turnbuckle until the shifter cable is taut.
7. If you have a threaded stud, use a wrench to turn the stud until the shifter cable is taut.
8. If you have a series of nuts and bolts, use a wrench to tighten the nuts until the shifter cable is taut.
9. Test the shifter cable by shifting through all of the gears. The shifter should move smoothly and engage each gear without any grinding or binding.
10. If necessary, make additional adjustments to the shifter cable until it is properly adjusted.
Once the shifter cable is properly adjusted, close the hood of your F-250 and take it for a test drive to ensure that it is shifting properly.
NOTE: If you are unsure about how to adjust the shifter cable on your F-250, consult with a qualified mechanic.