Attached is one of the two manuals I have. The second one is to large to upload here 3.7 mb. If you would like it, send me a PM (private message) with your email address. I also have an engine manual but it is for their older engine used in the NP generators. It has some very good troubleshooting and testing that applies to their newer engine. I can send it also if you want it, it's 12.5 mb.
Chuck & Teri, 1999 35 ft. Dolphin 5350, F53 Chassis with tag axle, Chassis build date 1/99 in Mexico, Banks System, Trans Command, Air Lift Air Bags on rear, Koni Shocks, Blue OX TruCenter, TigerTrak track bars front and rear, Roadmaster 1-3/4" rear auxiliary sway bar, 2013 VW Passat TDI SEL Premium, 1994 36 ft. Avion 5th Wheel. FMCA #F430129