SINGER 401A - Manual (Page 111)

93
SINGER* LIGHT
The light is turned ''on” or "off^ by the
switch F.
To Remove Bulb. Remove two screws D and
lamp cover E. Do not attempt to unscrew bulb.
Press it into socket and at same time turn bulb
over in direction shown to unlock bulb pin
G,
then withdraw bulb.
To Replace Bulb. Press new bulb into socket
with bulb pin G entering slot of socket and turn
it over in direction shown to lock bulb pin G in
position. Replace lamp cover E and securely fasten
it in position with two screws D.
LOCKS