Hey there Noble, very speedy sign up to the new forum. I think I just sent that email 60 seconds ago. In either case, yes, I do believe that Service Dept Vic might have manuals for your L1501.
The manuals for gray market Kubotas will come in two flavors, depending on availability:
1) the original JDM (Japanese Domestic Market) manuals - these are rare, typically wayyyyyy out of print and always have Japanese. That being said, sometimes these are all that are available.
2) a manual for the "North American" equivalent to your L1501 (which I do not remember off the top of my head - Vic will know). In other words, if you can get your hands on the manuals for the Kubota that is just like yours, but sold in North America, that's just as well.
I'll let Vic know to come have a look at this post and give his 2 cents. Thanks for joining up!