−6 −
(4) Positioning the cloth feed cam
The engraved point of the outer circumference of the cloth feed cam should be aligned with the pivot
fixed on the bed at the time of stop motion.
(5) The floating timing of the tension disc No. 2
The height of the ascending needle bar at the time of the floating timing of the tension disc No. 2 is as
shown in the table below.
Standard Adjustment
Lengthwise feed cam
Crosswise feed cam
Model
MB-373
MB-377
Thread
Cotton #50
Tetoron #20
Needle
TQ x 7
TQ x 7
TQ x 1
TQ x 7
Needle bar height
53 to 56 mm
54 to 57 mm
44 to 47 mm
54 to 57 mm
53 to 56 mm
Needle bar
Nut
Screw driver
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