2-7
TROUBLESHOOTING
S-101
Revised 09/2004
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O) Clamp Foot 10.2050.0.750 (to 755) and
10.2046.0.750 (to 755) too far away from
outside needle stroke. Loosen Screws
01.2051 and adjust Clamp Blocks 10.2045
and 10.2049 inward to suit.
P) Too much play in Looper Carrier 10.4002
(all). Adjusting Collar 10.4023 too loose.
Adjust according to instructions on Sheet 14,
Fig. 1.
Q) Too much play in Looper Carrier 10.4002.
Check up on worn parts or Rolls and replace.
R) Clamp spread insufficient to take up slack in
cloth. Adjust according to instructions on
Sheet 9, Fig. 4.
S) Springs 01.5026 weak or broken. REPLACE.
T) Vibrator Block 10.1026.2 sticking due to
extreme pressure of Buttons 10.1025.1 on
Needle Bar flats. Locate the cause and remove
pressure. Buttons should bear very lightly
against the flats.
22. SKIPPING AT THE START
USUALLY CAUSED BY THE
FOLLOWING.
A) Fork in Left Spread not covering hole in
Looper.
B) Right Hand Looper too fast.
C) Looper-dip too slow or fast.
D) Loopers too far away from Needle.
E) clamp Feet too far away from Needle.
F) Thread not going over shoulder of the Left
Hand Looper. Treatment on any of the
previous troubles given under heading
“Skipping Stitches”.
23. SKIPPING AT THE JUNCTION
OF THE Y OF THE TAIL BAR:
A) Cord very hard and heavy, causing Needle
deflection. In this case it is well to speed up
slightly the time of the Right Hand Looper
across the Needle.
24. STITCHES RAVELING BACK AT
END OF BUTTONHOLE
A) Release on tension is too great. Bend back
end of Release Lever 10.1012.1 to just
release.
B) Right Hand Looper too slow across Needle.
Speed it up. See instructions on Sheet 12.
Fig. 5, for adjustment.
C) Right Hand Looper bent, worn or out of
shape. REPLACE.
D) Right Hand Spreader not opening enough.
Follow instructions on Sheet 13, Fig. 4, 5
for adjustment.
E) Right Hand Spreader too straight. Curve
more or replace.
F) Hole in Throat Plate too large. Replace
Throat Plate.
G) Skipping the last stitches. Clamps not
holding work securely. Follow instructions
in Trouble Digest under Heading 14, 15, 16.
H) Needle penetrating in center of Fly Bar.
Close up banks of stitches. See Sheet 19,
Fig. 2, for adjustment instructions.
25. BREAKING UPPER THREAD:
A) Needle bent or incorrectly set. REPLACE
or reset according to instructions on Sheet
6, Figure 1.
B) Machine not threaded properly. See Sheet 4
for threading instructions.
C) Follow all instructions for Looper and
Spreader adjustments on Sheet 12 and 13.
D) Tension on upper thread may be right.
Loosen for a minimum pull without affecting
stitch. See Sheet 10, Fig. 3, 4 for
adjustment.
E) Remove all sharp spots over which the
thread leads: The Take-up Lever, the
Needle Bar, the Throat Plate, Loopers and
Spreaders.
F) Needle striking edge of Throat Plate.
Straighten, clear away interference with
emery cloth or replace Throat Plate.