Holcomb,,disregard the "clowns" that throw in stupid answers just to be "jokers". theres a spring that goes from the bell crank on the throttle linkage to a point on the block to put tension on your throttle linkage for the return.
i dont have a picture but if you look at where your gas peal rod goes to the pivot point,the spring goes there back to a stud on the block,,or down to the lil clip sticking up from the side of the oil pan.
hope this helps,Marty