It's hard to say. I have one for my dirtbike and it does have a few dimensions, but it's mostly blowups. I have used real engineering manuals for things like Coffin feed pumps, Terry turbines, GE generators, and GE turbines. Even those don't have dimensions on their drawings. In fact, the only manual I have read with dimensions for everything was a Babcock and Wilcox boiler manual that included the orignial build drawings.

See if you can track down a factory rep and ask him. They should have access to blueprints.