B3-6A info?

I recently acquired a Yanmar B3-6A mini-excavator. It's a Japanese market machine, so there is almost no info on the web, and none at all in English. The dealer says is's "sort of" similar to the ViO30, but it has a sideways articulate arm (instead of pivot). I found one for sale in Japan that leads me to believe it's newer than 2008 based on serial numbers (62149 versus 2008 60000). It might have a 3TNV82A or 3TNC88A engine, or something else?

It's fully serviced right now, but I'll...

B3-6A info?

B3-6A info?