Singer 29K71 - Page 14

TO REGULATE THE TAKE-UP LEVER
WITH REGULATOR INDICATOR
The spring tension on take - up lever J, Fig. 29 is
adjusted by thumb nut K. The tension on this lever
should be about the same as that applied to the upper
thread by the tension discs.
When the stitch is set, at the top of the needle bar
stroke, lever J should be held down far enough by the
tension of the thread so that the take-up action will
keep the thread taut until the needle enters the work.
When sewing light weight materials with fine
thread, more take-up action may be secured by turn-
ing the thumb nut K so that it screws up to decrease
the take - up spring tension. This should be done instead
of tightening the thumb nut of the tension discs.
For
heavier materials and thread, the take - up ten-
sion must be about the same as that applied to the
upper thread by the tension discs.
The travel of take-up lever J is regulated by means
of knurled nut L. The indicator near nut L is marked
with the figures 0 to 4. This indicator provides a useful
guide to the operator in setting the take - up movement
most suitable for the material and thread being used.
For thin materials, such as kid or box calf, turn knurled
nut L until the zero mark is opposite the small plunger U.
Other adjustments can be made in steps by turning
the nut to suit any thickness of material and thread
within the capacity of the machine.
NOTE: All machines sent out from the factory are
so adjusted that they will give satisfactory results on
a general range of materials. Before any adjustment
is made to the travel of the take-up lever, the needle
bar should be raised to its highest point.
Fig. 29. Regulating Tensian and Travel of Take-up Lev er
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ADJUSTMENT OF THREAD TAKE-UP LEVER
REGULATOR INDICATOR
The range of adjustment given by the indicator,
when sent out from the factory, !thould suffice for all
general purposes, but, if desired, the range can be
raised or lowered by means of the adjusting screw
T, Fig. 29 at the extreme right.
To alter the range, loosen the lock nut S and, using
a screwdriver, turn the center screw T to the right to
reduce the travel of the take-up lever.
To increase the travel, turn the screw T to the left.
Wear at the tip of the center screw can also be taken
up in this manner. When the proper adjustment has
been obtained, tighten the lock nut S.
It is most important that the hexagon head nut R
be securely locked against the face of the piston.
TO CHANGE LENGTH OF STITCH
The length of stitch is regulated by the stitch regu-
lator which is held in position by thumb screw
M, Fig. 30 at back of the feeding foot bar. Loosen
thumb screw M and move the regulator up or down
until its top is in line with the mark indicating desired
number of stitches to the inch as shown by the arrow.
Then tighten the thumb screw.
Fig. 30. Changing Stitch Length
From the library of: Superior Sewing Machine & Supply LLC