My brother has an 04 Scrambler 500 4x4. The other day I was riding it and I notice when I had it in 2wd and would give it a lot of throttle, 4wd would engage. I know when the AWD button is on and the rear tires spin/ loose traction its supose to engage. The whole time we've owned it, once we put in AWD, it's all time 4wd, it wouldn't engage when the tires spin. I dont know if it's supose to be like this or what. Any ideas?
Thanks