what generators came in these things

[Svend]

I have a 76"  21" dodge chassis with an Onan.  The data plate says it's a 5.2FK-18.  Could be a "Pk".  Have to read plate with a mirror.  Does anyone have one of these.  were they a standard unit at this time.  Been on several Onan sites that sell manuals but they don't list this as a model.  Mayber it's old and obselete.

[handyman]

Don't know what the fk  stands for it should read 5.2kva whitch is a good unit most are 4.0kva you should be able to get a manual from any rv shop or they can order one for you onan is one of the best units around