Ok so what is missing in my original picture on the plastic rectangular plate that the vacuum line would attach to?The fuel pump normal location is on the blower housing next to the air filter cover on what would the left rear of the cover if you were sitting on the rider seat with a vacuum line connected to the dipstick tube for the pulse line. It is held on with two christmas tree fasteners on the newer models.
https://www.smallenginewarehouse.com/33S877-0019 Second image on this page shows the typical fuel pump location