2 stroke 400. Pretty zippy little machine. 90s model I would guess. Not really sure.  Push button 4x4. I don't think it engages. Could be electrical connection. Again, im not sure. Have not really messed with it. Has high low and reverse. Electric start and pull start. Winch on the front. Decent machine. Starts easy and runs good. Last time im listing it then ill just keep it!