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FIG. 36
Attach gibs (A, Fig. 38) to the cylinder cover but do not tighten screws (B); leave them snug for further
adjustment. Fasten spring (C, Fig. 38 inset) to the bottom of slide block (D) and insert between gibs (A).
Attach lap former (E) to slide block (D) with screws (F) and position it in the center of the presser foot. Position
the slide block so it has a snug (but not tight) fit the entire length of the gibs. Tighten screws (B).
FIG. 37
TENSION RELEASE
The tension release should 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 necessary.
HUNG FOOT ADJUSTMENT
When sewing on extremely lightweight material and/or feed cutting
is a problem, the presser foot may be "hung" by raising stud (B) until
guide (A) rests on the shoulder of stud (B). This adjustment will raise
the presser foot slightly, so only the pressure of the presser foot shoes
contact the material. Turn handwheel in operating direction until the
feed dogs are below the throat plate surface. At this time there
should be a 1/32" (0.8mm) clearance between the bottom of presser
bar guide (A, Fig. 37) and presser bar guide stud (B). To hang the
presser foot loosen lock nut (C Fig. 37) and turn thumb screw (D Fig.
37) so that foot comes up slightly, tighten screw (C Fig. 37).
SETTING THE LAP FORMER
19
FIG. 38
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