Seiko JW-28BL-30 - User Manual

OPERATING INSTRUCTIONS
FOR
JW-8BL-20 JW-28BL-20
JW-8BL-30 JW-28BL-30
SEIKO SEWING MACHINE CO., LTD.
TOKYO JAPAN
From the library of: Superior Sewing Machine & Supply LLC

Summary

Setting Up the Machine

Caution Before Starting Operation

Oiling the Sewing Machine

Needle Installation and Type

Threading the Needle

Regulating Thread Tensions

Adjustment of the Stitch Length

Adjustment of the Pressure

Relative Position of Presser Bars, Needle, and Feeder

Adjustment of the Feed Dog Height

Hook and Needle Timing

Hook and Needle Timing Adjustment

Adjusting hook timing based on needle position and clearance.

Hook Saddle Clearance

Needle Bar Height

Adjustment of Bobbin Case Opener

Adjustment of the Height of the Presser Feet

Timing of Vibrating and Lifting Presser Feet

Adjustment of Clearance for Vibrating and Lifting Presser Feet

Re-engaging the Safety Clutch

Seiko JW-28BL-30 Specifications