Dodge D250 1990 Service Manual page 438

Operate the hand lever until the fuel flowing from the fitting is
free of air. Tighten the bleed screw.
Torque Value to 8 N-m [6 ft-lbs].
Note: If the lever feels as though it is not pumping, rotate the
engine appoximately 90 degrees and proceed.
Caution; The hand priming lever must be returned to the
lock position after priming. The lever will be in the up
position when locked.