The pump should shoot gas just as soon as you crack the throttle. The harder you hit it, the more it should shoot. Give the throttle a couple really quick twists while watching down the carb ( ENGINE OFF ). Did it spray anything, some, or a lot?
Sometimes you can get them working this way, most times you need to go inside and check the check ball and pump itself.
You may need to tweak the linkage a little to get rid of any slop, the pump must move as soon as the throttle does, no lag or taking up wear.
Get back with us and let us know what you find.
