1. Park the truck on a level surface and turn off the engine.
2. Open the hood and locate the clutch linkage. It is a series of rods and levers that connect the clutch pedal to the transmission.
3. Inspect the clutch linkage for any signs of damage or wear. Look for bent or broken rods, loose or missing bolts, and any other signs of damage.
4. Check the clutch pedal for free play. There should be about 1 inch of free play before the pedal starts to engage the clutch.
5. If the clutch pedal does not have any free play, or if there is any signs of damage or wear to the clutch linkage, you will need to have it repaired or replaced.
Here are some additional tips for checking the clutch linkage in an 89 F-150:
* Make sure that the truck is in neutral when you are checking the clutch linkage.
* If the clutch pedal is hard to press, it may be due to a worn or damaged clutch cable.
* If the clutch pedal is spongy or does not return to the top after it is pressed, it may be due to a problem with the master or slave cylinder.
