SunStar KM-380B - User Manual

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1. For proper use of the machine, thoroughly
read this manual before use.
2. Keep this manual in a safe place for future
reference in case the machine breaks down.
User’s
Manual
KM-380
KM-380B
High-Speed, 1-Needle Lock-
Stitch Sewing Machine With
Compound Food & Walking
Foot Mechanism
MMMMEE--005500550099

SunStar KM-380B Specifications

General

Needle	HAx1
Buttonhole	4-Step
Stitch Length	0-4mm
Stitch Width	5mm
Needle Threader	No

Summary

Specification

Precautions During Operation

Method of Use

Installation

Set up the machine on an even surface and fix components securely.

Speed

Information on machine operating speed and pulley adjustments.

Lubrication

Daily lubrication procedures and periodic cleaning of parts.

Attaching the needle

Procedures for correctly attaching the needle to the machine.

Inserting the bobbin case

Steps for removing and inserting the bobbin case into the hook.

Winding the bobbin

Process for winding thread onto a bobbin using the winder.

Threading the Machine

Step-by-step guide for threading the sewing machine.

Setting the stitch length

How to adjust the stitch length using the dial.

Thread tension

Adjusting needle and bobbin thread tension for optimal sewing.

Thread take-up spring

Adjusting the stroke and pressure of the thread take-up spring.

Presser foot pressure

Adjusting the pressing force of the presser foot.

Handling the hook

Procedures for disassembling and assembling the machine's hook.

Setting the Machine

Needle-to-hook relationship

Adjusting the distance and alignment between needle and hook.

Height of the feed dog

Adjusting the height of the feed dog relative to the throat plate.

Positioning the feed cam

Aligning the feed cam for proper needle and feed lever movement.

Adjusting the main and auxiliary presser foot

Adjusting the working height and stroke of presser feet.

Adjusting the needle bar

Setting the needle bar position relative to the feed dog crank.