Just did that on my wife's CB360 actually. It wasn't bad, I took the whole motor apart since I knew it needed some other parts replaced and checked. Pull the oil and split the cases. A larger snapring infront of the recoil spring, the recoil spring is all you take off on the outside of the case. Inside there is one tiny snap ring on the tip of the shaft, a 90 degree snap ring pliers for that one will make your life a lot easier. Keep a finger on last piece on the shaft, there is spring pressure there and a very tiny washer. I'd recommend putting a piece of paper towel in the case below it in case it slips off on you after you take the snap ring off so you don't have to poke around in the remaining oil and sludge in the bottom of the case to find it. Mine needed a soft tap with small hammer to come out of the case. Installation is opposite.