ZOJE ZJ781-BD - User Manual

Service Manual
Buttonhole machine
ZOJE
ZJ781-BD

Summary

Needle Bar Height Adjustment

Needle and Hook Cooperation

Baseline Adjustment Handle

Needle Bar Cooperation

Needle Drop Adjustment

Needle Bar Swing Fork Height

Under Feeding Crank Position

Presser Foot Front and Rear Position

Cutter Falling Time

Cutter Fall Position

Knife of Action Hook Position

Stop Device Adjustment

Security Hook Start Position

Upper Knife Back and Forth Movement

Upper Knife Left and Right Position

Upper Scissors Height

Upper Thread Roll Position at Start

Scissors Opening Time

Limit Plate Adjustment

Safety Crank Adjustment

Upper Scissors Spring Pressure

Fixed Knife Position

Presser Plate Height

Low Speed Bump Position

Starting Lever and Ram Position

Belt Adjustment

Other Parts Adjustment

Left and Right Stitch Position Adjustment

Adjusts stitch position based on hole width using needle swing and baseline settings.

Tension Opening Time Adjustment

Adjusts the timing for the first and second tensioner opening.

Wiper Adjustment

Adjusts the threaded wipe to loosen upper thread and prevent off-line issues.

Thread Adjustment Hook Adjustment

Adjusts thread supply based on product thickness for better stitches.

Lower Thread Lever Adjustment

Adjusts the length of the lower thread for starting seams by changing lever angle.

Lower Thread Tension Spring

Adjusts installation position of lower thread lever and clamp spring to gently press lower thread.

Bobbin Pressure Bar Device Adjustment

Synchronizes bobbin presser with thread trimmer to prevent idling and jumping.

ZOJE ZJ781-BD Specifications

General

Max Stitch Length	5 mm
Stitch Type	Lockstitch
Motor Power	550W
Max Sewing Speed	5000 stitches per minute
Needle	DBx1
Hook	Rotating Hook
Lubrication	Automatic Lubrication
Power Supply	220V