Like Problem? said, tell us your problem. I've worked on the Hitachi's a little bit, and for that one they are basically the same as a similar sized Deere, which I have also done a bit of work on. Right now I've got a manual for an EX100-1 on the truck, that belongs to a customer. Even though it's a different machine, often the basic operation and parameters are the same between models of similar sizes.
So, what's the problem? Hopefully me or somebody else on here might be able to help out even without a manual because they are all but impossible to find except through the dealership. I looked for nearly 6 months for one for my customers EX100, right after he got it, but I finally gave up after finding nothing and he got one from the Dealership. Believe it or not it wasn't that expensive, especially compared to the factory manuals for many of the other brands.