Which manuals are of the most use to you?
I have a 1992 Ward on an international chassis. I wanted to find out what I need to do to service my bus. Where would I find that info? I'm thinking of something like I have for the car that tells me at this many miles you do this. Do busses have something like that? When you change the oil it needs XX quarts of oil, use oil filter xyz.
Is there a service manual for Ward? For International? Is a parts manual helpful?