Singer 211U157 - Page 12

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
ADJUSTMENTS
SETTING NEEDLE BAR
211U157
\\rien needie bar is at lowest position of its cycle, the
ccrrect gauge distance from throat plate seat to needle
s:op, in needle bar is .991 inch (25.16 mm)
Needle bar is correctly set when, at the lowest position
of its cycle, the upper timing mark is Just visible at lower
edge of needle bar frame as shown in Fig. 21.
If needle bar is not correctly set, loosen needle bar
cor,necting stud clan,p screw
shown in Fig 21 and correct
needle bar position. Re-tighten needle bar connecting stud
:::;an·c screw.
DISTANCE OF NEEDLE BAR FROM PRESSER
BAR
The distance between needle bar and presser bar (after
regulating stitch length so that there is no feed movement)
should be 17/32" (1349 mm) as shown in Fig 21
! f the distance between need le bar and presser bar is
':"Ore or less than 551 inch (14.0 mm), first turn machine
:::u!ley over
toward you until needle bar is at highest posi-
;ion. Remove cover plate from front of machine arm.
Loosen needle bar
frame clamp screw shown in Fig. 22
,'Jove needle bar frame forward or backward to correct its
position. Re-tighten clam:i screw.
ADJUSTING FEED REVERSING MECHANISM
AdJust stitch length to 6 stitches per inch on the
21 2U 141 machine. Loosen screw A and adjust crank shown
in Fig 23 so that the above stitch length can be obtained.
When you depress the reversing lever, the eccentric head
of the bearing pin B should rest against the bearing block.
Loosen set screws C and turn bearing pin B until the stitch
length is the same in reverse feed as in forward feed. Tight-
en a 11 screws.
- 11 -
\j
Fig. 21
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NEEDLE BAR FRAME
CLAMP SCREW
Fig. 22
C
Fig. 23
CLAMP
SCREW
UPPER TIMING
MARK