This a 6.5 NH Generator. According to the service manual the unit takes a Onan 149-1445 internal filter. My question is: The unit has a Facet 574A fuel pump, which looks identical to the one in the manual. Are the fuel filter the same? I called a couple of Onan Parts houses with no luck. Looks to me like Facet made the fuel pumps for Onan, but don't want to put out $10. plus S/H unless I know for sure. Earle