Most of the time, when you start to have problems with the actuator like that, the oil in the front diff is milked. There is a large plug like he said^^^, and a drain at the bottom. Drain it out and if it's milked, just fill it back up and ride it around a minute, and drain. Do this a few times to clean it out. You will need to drain it to pull the actuator. It doesn't use much though, and it's regular motor oil for the front. If you do pull it, be careful putting it back in. The puck on the end has to fit in the groove in the collar or the actuator housing will break when you tighten it.
2007 Camo Brute 750, Orange 7" HL Lift Kit and HL Lift Springs, 31" Laws with SS112's, 1" Spacers, Full Muzzy Exhaust, Maroon Primary/Yellow Secondary, Moose CDI, Warn 2.5 RT, HlRadiator Relocated with Engine Ice, Highlifter Diamond Plate Front, Ricochet Skids, UNI Air Filter, Center Snorkels, Dynojet Jet Kit, Ammo Box Storage, Split AudioTube, Otterbox with Ram Mount, Marine Ice Chest, HL Temp Gauge, Pen-Lock, Chrome shift knob, HID's, ODI Grips, and Speedlinez brake lines.