My coach (2020 Accolade) has an Onan QD8000 generator. The fuel pump is access through an access panel on the bottom of the generator. The fuel has 2 hoses, one coming from the filter and one going to the generator's engine and it is mounted with 2 bolts.
The fuel pump on my generator is shown in the Installation manual as well as the Operator's manual. The Installation Manual even tells the installer that the generator must be installed in a location that permits access to the 2 fuel pump mounting screws.
US Army (Ret)
2020 Entegra Accolade 37TS
2019 Jeep Grand Cherokee Trailhawk (Toad)
FMCA - F432054