This can be very tricky at times. Quite often a sharp blow from a hammer on the wrench will work. Sometimes an impact wrench will work too. If that fails, then remove the fan cover from and try holding the motor shaft with channel locks, or vice grips. If it has a fan, you might have to remove it.
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This can be very tricky at times. Quite often a sharp blow from a hammer on the wrench will work. Sometimes an impact wrench will work too. If that fails, then remove the fan cover from and try holding the motor shaft with channel locks, or vice grips. If it has a fan, you might have to remove it.