How do I do that to see? Lol I know it's probably a stupid questionDoes the motor turn over manually? Besides the starter, that's also what would happen if the motor was seized up after sitting for 3 years. Or the reason it was sitting still in the first place.
its a side by side not a bikeThere are no stupid questions, just the occasional stupid answer, and I'm not excluded from that. Since you're asking about manual rotation of the engine I'll assume it has no kickstarter. Not familiar with any 650 that's a 4x4, but my last bike was a 650 single banger that was so dangerous to your fragile shinbones that Suzuki refused to build a kickstarter on them. No starter, no starting.
What kind of clutch does it have? If it's some form of centrifugal clutch there's no pushstarting it. If it's a straight up manual clutch like my bike you can get it rolling good in neutral, pull the clutch, kick it in gear while standing up, and pop the clutch at the same time as you plop your rear end down hard on it.
My buddy recently acquired this Kawasaki Brute Force that was left out under the tree for about 2 years. The previous owner said it got a new battery prior to hitting a fence and sat it. We'll take a closer look at the wirings first after we finished installing the suspension and fuel wheels on the truck and clear the garage. Hope the battery would still pass the load test.Check all cables and grounds for corrosion. Make sure the battery has been load tested at Autozone or Advance or someplace and it passes. Then I would consider replacing the starter after all that.