Singer Centurion 121D200A - STITCH LENGTH ADJUSTMENT; PRESSER FOOT PRESSURE

STITCH LENGTH
The stitch length can be regulated while the machine \s^'m operation. To obtain the
desired stitch length In forward feed, turn regulating thumb screw on oil pan "In" (coun
terclockwise) for more stitches per Inch, and "out" (clockwise) for less (Fig. B).
To adjust the stitch length for reverse feed. It Is necessary that the reverse stopping
block be properly positioned. This Is done by loosening the lock screw In the stopping
block and sliding the slide block up or down to the desired stitch length. The locking
screw must then be retlghtened (Fig. A).
Forward
I
Reverse
-0
Locking Screw
FIG. A
PRESSER FOOT PRESSURE
The pressure on the material should be as light as
possible while still sufficient to ensure correct feed
ing. There are two regulating screws that control the
presser foot pressure. One atop the arm and one at
the rear of the machine. The one atop the arm Is the
major control, normally adjusted prior to long pro
duction runs or new applications. For day-by-day
casual adjustments, the regulating screw at the rear
Is used, screwing In for less pressure and unscrew
ing for more pressure. When this rear screw Is
unscrewed all the way out. It disengages; only then
can the top screw be applied, and It serves as the
sole control until the rear screw Is again turned In
ward (Fig. C).
Less
FIG. B
Regulating Screw B when
Screw A is Disengaged
Regulating
Screw A
From the library of: Superior Sewing Machine & Supply LLC