Onan 7 5 KW Diesel Generator Foretravel Motor Home RV Stand by Gen Set | eBay (http://www.ebay.com/itm/Onan-7-5-KW-Diesel-Generator-Foretravel-Motor-Home-RV-Stand-By-Gen-Set-/351179648827?pt=BI_Generators&hash=item51c3f02f3b)
IF it is in good condition with the 7,200 hrs. showing, and with proper feeding & care, you should get at least 15,000 hrs. out if it
1st thing, put a new Gates fan belt on it, the belt has always been the wear issue on these from our experience. Had one on a bookmobile, ran more hours than you would believe.
The other weak link has been the fuel solenoid, would keep a spare.
New they sold for about $6,500 as I recall from the early 90's.