It's been so long that I forgot. Maybe BC can recall how I changed the settings on the injector pump. I can't remember and the pump on my RTV1100 is completely different.
By the time I got rid of my RTV900 it would pretty easily run 30 mph and seemed to have twice the power it had when I bought it. I think about half of the difference was tinkering with the pump and the other half was breaking it in. I had one of the first production units that was
horrible about sticking in gear. It was standard operating procedure to have to shut it off to get it out of gear. Kubota was no help on my machine. On newer machines they made changes but never helped original owners like me. I still have a burr in my rear about Kubota for doing that.
After having to shut it off a dozen or two times in a day to get it out of gear I generally ran the dog piss out of it. I not only ran it like I stole it, I ran it like I was pissed at it! As far as I was concerned, there was no variable throttle; it was either on the floor or my foot was off of it.

Strangely enough, after a couple dozen hours of doing that, it became considerably more snappy. When I first got mine, if I were sitting still it wouldn't climb over a bump as big as my pecker!


Spinning the tires when climbing a hill was flat out of the question, especially when I added more aggressive tires. BTW, I still have those tires, Maxxis Bighorns, and I love those tires. I've noticed that a lot of machines come with them from the factory now.
Anyway, maybe BC will recall which direction I turned which screw on the pump. Otherwise, run the piss out of it every time you take off. No kidding. It made a huge difference in mine. Good luck!