As much as I'd like ninjette.org to become a trusted source of tech info on the 1st-gen ninjette, the folks at ninja250.net have been working on that same idea for well over a decade at this point, and have put together quite a collection.
Here's a link to their main FAQ page for the 1st gen Ninjette.
Here's a link to the new wiki section on our site here for the pre-gen bikes.