Thermo quad bogging badly when stomped on

The pump shot is adjusted externally by moving the linkage rod located at the bottom of the throttle arm into the hole closer to the carb body up top on the arm that see saw’s back and forth located up top, drivers side, up front. Readjust the linkage arm (bend it) to get the same height on the other side of the fulcrum point for the plunger it is connected to.

Upper right side of the picture below.