Jack C4 Training Courseware

Maintenance instructions
12. Adjustment of upper and lower cutter:
The upper and lower cutter and the needle plate plane are
preferably parallel, the left and right location are subject to
the upper cutter, the upper cutter is subject to the width of
and the range of bite is 0.5-1mm.
0.5-1mm
lower
cutter
Upper
cutter
Needle plate plane

Jack C4 Specifications

General

Product Introducti	ion-technical specifications
Type/Name	C4 The Fastest Automatic Overlock Machine
Highest Speed	7000rpm/min
Differential	0.7-2.0
Thread Wideth（mm）	1.5-8.0
Presser Foot Height（mm）	5.0-7.0
Needle Type	DCX27
Needle Bar Height	（general）10.4mm/12mm（heavy）
Needle Bar Stroke	（general）24.5mm/26mm（heavy）

Weight and Dimensions

Max Length(mm)	0.8-4.8