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7. Standard adjustment
(1) How to remove the gauge components and upper feed roller (differential feed
mechanism and 1 piece feed mechanism)
Disassembly procedure
1. Remove the gauge, its related parts (needle , presser yoke , throat plate , differential feed dog ,
and main feed dog ), the cover, its related parts (cover for needle bar and roller and looper cover ),
upper feed roller assembly , roller pressure regulating screw , and pressure regulating plate spring
assembly before adjustment.
(Caution) The directions of front, rear, right, and left during standard adjustment are based on the operator
working position. Therefore, the forward rotation of the pulley is counterclockwise.
Left side of the machine head
Right side of the machine head
Rear side of the machine head
Pressure regulating plate spring
and its related parts
Left side of the machine head
Gauge and its related parts
(Differential feed mechanism)
Gauge and its related parts
(1 piece feed mechanism)
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