No, the Featherweight motor is smaller and has a different fitting. The 99 has the basic full size Singer motor, much the same as found on 15, 66 belt driven 201s,... You can use one of the new replacement motors for the Featherweight, they work well enough. Usually you can repair the old motor, and in the worst of case I know some have had the internal motor parts rewound with new copper wire.
There is a hand crank made for the Featherweight, but it will never be much more than turning the balance wheel by hand since there isn't the geared action you get on a real hand crank. Some like the hand crank handle for the Featherweight though, but as mentioned, you don't get the speed of a regular hand crank.
Last edited by Mickey2; 03-02-2019 at 10:34 AM.