Pulled the Onan after it started doing the start but not run bit unless hold down the start button. Looks like the rotor plastic parts are coming apart with chunks at the bottom of the housing. Having a difficult time getting a price from Cummings/onan to repair. Not sure I want to fix this generator. Would love to put a Honda EU3000is in place of the Onan. Not sure it can be hooked to RV fuel supply or if the exhaust can be routed external. Any suggestions on an economical and reliable replacement would be appreciated. Onan is not what they used to be as far as I am concerned after experience with this unit at 645 hrs.