On Sat, 20 Jun 2015 12:27:13 -0700 (PDT), wrote:

Does anyone know how to remove a motor on a boyar Schltz 618 grinder?

Pull the wheel, remove the motor bolts and wiring..and it should
simply pull off. IRRC..there is a rubber coupler between the arbor and
the motor that should be obvious once the motor is free.