How do you adjust fuel linkage on 300d?

To adjust the fuel linkage on a Mercedes 300D, first, ensure the engine is off and cool. Locate the throttle linkage, which connects the accelerator pedal to the injection pump. Adjust the linkage by loosening the lock nut and turning the adjustment screw until the desired tension is achieved, ensuring the throttle opens fully when the pedal is pressed. Finally, re-tighten the lock nut and double-check for smooth operation.