Singer 620 - Page 10

WINDING MECHANISM
Bobbin Push-Button Assembly
Removal and Replacement
Open slide plate. Place push-button irr winding
position. Lay machine on back and remove bed cover
from machine. Remove locator nut from bobbin driver
by turning in a CLOCKWISE direction. Then remove
the two screws fastening the push-button assembly
to the underside of the bed. Slide assembly out as
a complete unit, being careful not to bend the push¬
button release lever.
To replace, follow the same directions as for
removal, except in reverse order.
Bobbin Driver
Removal and Replacement
Teen slide aiaTe. Remove ‘hroat plate, bobbin
cose, one ;ea cover. Per stitch enern seiecrcr ct p
•r.'cnes oer nen, one -pm non a -vneei jnri: eec
cog. is m its extreme 'ear oosinon. Remove iocaror
nut, pusn-button assembly, and locator. Then slide
bobbin driver up, rotate until apron is opposite feed
dog, and lift out of machine.
To replace, install bobbin driver in machine, ro¬
tating it until it seats firmly into place. Then replace
locator, push-button assembly, locator nut, throat
piate, and bobbin case.
Adjustment
To adjust the height of the bobbin driver, place
push-button in winding position and loosen adjustable
extension screw at end of lifting bracket. Press up¬
ward on bracket until bobbin rises slightly above top
of bobbin case. Then release upward pressure slight¬
ly, allowing bobbin to seat correctly into bobbin
case. Without disturbing this setting, tighten ex¬
tension screw securely
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