there is a electrical clip on the right side of the engine on top of the oil resevior. Take that off and unscrew the dipstick. Do not screw the dipstick in to check the oil level. There is a panel on the bottom of the sled. Unscrew the 5 screws with a allen bit. drain the oil from the plug that is there. You also have to take the right panel off the front of the sled and drain the oil out of the oil resevior. To change the oil filter, you have to remove the airbox, then the battery, then the battery frame. The oil filter is under all that. Hope this helps.