Hi everyone, new to the site. Recently bought my first bike, a 2002 grizzly 660. Been fixing it up and learning a lot through this site, so recently decided to join. Any way, wondering if anyone can help me get to the bottom of this. My four wheel drive is not working, but I can hear the actuator when I click the button, so I assume it is trying to engage. I am new to these machines, but desperate to get this bike in top working order. Any advice on what the problem could be?