I have a 1993 300 SD that the Stop fuel shut-off lever sticks at the closed position and will not pop back up. Or will not shut off the engine unless the lever is mover 1/8 inch more by hand. There is good vacuum. The lever does move easily about 75 degrees when the key is turned off. When moving the lever by hand counter clockwise from the 12 o'clock (Run) to 10 o'clock (Stop) it is smooth. There is something binding from the 10 o'clock to the 9 o'clock. By moving the lever just so slightly down another 1/8 inch will stop the engine.

Thanks

Dean
Three six zero three zero one twenty fifty-five