Singer 457 - Monthly Lubrication and Care

EVERY WEEKOR SO (Continued)
Positioning Stud
Removing and Replacing
Throat Plate
Turnhand
wheel toward you
until
the needle is at its highest
position .
Open slide plate .
Place thumb under right side of
throat plate and lift up until
throat plate
snaps free .
Replace throat plate under clamp-
ing pin, push gently to left, and
press down until it snaps into
place .
Removing and Replacing Bobbin Case
Open slide plate, raise needle, and
remove throat plate .
Lift and push holder to right, as
shown, and remove bobbin
case .
Remove all lint and fluff .
Replace bobbin
case . The groove
under tension spring fits on hook
raceway and fork of case strad-
dles positioning stud under feed
dog .
Push holder
to left until it snaps
into position .
Replace throat plate .