22
FIG. 34
FIG. 35
LOOPER THREAD ADJUSTMENT
Loosen screws (A, Fig. 34) and position looper thread cast-off (B)
flush with the right end of cast-off support plate (C). Tighten screws
(A). Loosen screws (D, Fig. 34 inset) and time take-up (E) so the
thread will cast-off when the needle bar has descended 7/64" (2.8mm)
from its highest position. When thread eyelets (F) are moved further
to the left the amount of thread pull-off will increase.
COVER THREAD ADJUSTMENT
Loosen screw (A, Fig. 35) and set the lower edge of cover thread
take-up eyelet (B) so its 3/32" (2.4mm) above the surface of cast-off
plate (C). Tighten screw (A). As the cover thread hook moves to the
left over the cover thread and the needle bar starts to rise, the cover
thread must "cast-off" from the high point of take-up (D). Loosen
screws (E) and adjust take-up (F) accordingly. make sure that take-
up (F) is centered in cast-off plate slot (C) and take-up eyelet (B) is
centered to take-up (F). Tighten screws (E).
TENSION RELEASE
The tension releaseshould start to function when the presser foot has
raised approximately 1/32" (0.8mm) above the surface of the throat
plate and be entirely released when the presser foot has reached its
highest position. Insert a large screwdriver into slot on the right end
of shaft (A, Fig. 36), loosen screw (B) in lifter lever (C) and turn the
screwdriver to raise or lower pins (D). Tighten screw (B).
NOTE: Make sure the 1/32" (0.8mm) clearance between the
presser bar lifter lever and presser bar guide has been
maintained. Refer to Fig. 22 if readjustment is neces-
sary.
FIG. 36
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