onan rv qd 10000

I have the same gen - the fuel filter can NOT be pre-filled since it sits on its side.

the filter is held in by a bracket (2 bolts) that bolt to the side of the cabinet (accessible from the outside, just below & to the right of the access door)....it is NOT necessary to remove the two bracket bolts to remove the filter.

FIRST - use two wrenches to loosen each of the fuel lines on the filter FIRST.
NEXT - remove the single nut on the fuel filter/stud that holds the filter to the bracket

REMOVE / Replace filter - then replace the fuel lines (use the backing / 2nd wrench, as you did to remove the fuel lines)

once you have the filter replaced and the fuel lines back on the filter - PRIME the filter by holding the start/stop button in the STOP/Prime position until the pump/prime stops....prime the filter a couple of times & THEN start the generator & check for leaks.

oil and filter changes are called for every 250 hours
fuel & air filter change intervals are called for every 500 hours

the following document / link should be helpful (see page 3-6 / figure 3-4 for fuel filter location).

http://www.norwall.com/product_pdfs/1392_10_0hdkca_11506_om.pdf

At 300 hours I believe it is not yet due for anything but oil change.

Better to fill the filter with diesel before putting it on as it will save time restarting. I pull the return hose on mine and wait til fuel runs through it. It is then self priming.

awesome thank you for all the help

If it's like the 7500' then all the filter part numbers are identified on the panel next to the start switch on the generator

The Fuel filter is located in the base tray, just inside service door. Should be rectangular shape, metal silver color, and have two fuel lines attached to it. It is attached to base with bracket. Easiest way to change is to remove two screws holding bracket to base ( 10 mm wrench), pull filter with hoses and bracket still attached out of tray. Fuel lines may then be removed and filter replaced. Be careful to install lines so they dont get kinked and restrict fuel flow, and use good fitting wrenches on line fittings so corners dont get rounded off.
Onan p/n 149-2513, Fleetguard p/n FF-236. NAPA, Carquest, Wix can supply also. Push gen switch to "stop" to run fuel pump when done and check line connections for leaks, and to prime system

Here is what you are looking for.

https://www.rvchassisparts.com:8443/aparvchassis/runApp?id=5

For some reason, the link only takes you to the home page. Sorry. But if you go on the left to filters, then to generator filters, it will be the filter on the top of the page.

Safe travels.