There may come a time when you have to take your motor to a rewind shop for a service. Noisy bearings, very dirty, shorting out or motor not starting properly. It makes the job of the rewind specialist easier if the motor is removed from the cradle and has the cone taken off. It can prove quite difficult to get the cone off, especially if the wheel is old. The cone is held on by a grub screw on the flat section of the cone. Use an appropriate size Allen key to take it out. Try pulling the cone off and if it moves all is fine, just keep pulling. When the cone is put on in the factory it has a small amount of grease on it. The cone is machined to a very fine tolerance so they get stuck over time. The trick for getting them off when stuck requires a heat gun. I have a plywood square with a slot on it to go over the motor shaft between the cone and motor to protect the motor from heat damage. Aluminum expands a lot faster than steel and the heat is transferred quickly through the cone. This heats up and melts any remaining old grease inside and after a few minutes of heating it should slide off easily. Wear a good leather glove as it will be hot. When you put it back on after the motor has been repaired pop a little bit of grease in it. That’s all there is to it.