You can test the motor with a multimeter if you think it may have an electrical charge.
Note the wire locations so you can reconnect them later. You may want to take pictures to help with this.
You can purchase a gear puller at most hardware stores.
Put 1 mark on the end bell underneath the pulley, then put 2 marks on the opposite end bell. Your motor may also have long metal tubes called housings. These are located behind the end bells. Mark them the same way.
Depending on your motor, you may need a box wrench or a screwdriver instead.
Remember to get both bells, including the one on the side opposite of the pulley.
If your motor does not have a starter switch, it will have a brush housing, which is a horizontal tube. Look for the massive bundle of copper wires inside it. Note the position and number of any shims. The shims are flat metal pieces that look like 2-pronged forks.
You can purchase degreasers at many general stores or automotive stores.
Rubbing the wires or getting them wet can cause your motor to short-circuit. The tightly-coiled wires are challenging for most people to fix.
If you can’t reach some of the degreaser, blow on the area until it dries.
As long as the wires aren’t broken, the motor should run properly.
Remember to slide the opposite end bell onto the other end of the shaft. Make sure any shims you noticed earlier are positioned where they are meant to be around the end bells.
Check the punch marks to make sure the bells are on the proper end of the motor. Take the bells back off and reinstall them.
If you are unsure where to put the wires, look up a diagram online. Connect the wires according to their color.
