7. Assemble the accelerating pump piston, the pump spring, washer, the pump rod, and pump rod spring. Install the pump in the main body being careful not to curl the piston on the edge of the pump chamber. Assemble the pump rod stud to the throttle lever with the pump link and retainer. (Re-install pump rod retainer ring if originally equipped). Install the pump link placing the short pin in the center hole for normal weather operation, and in the inner hole for very warm weather or in the outer hole for very cold weather.