SunStar KM-506 Series - User Manual

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USER’S
MANUAL
KM-250/KM-350 Series
High-Speed, 1-Needle, Drop-Feed
Automatic Thread Trimmer
High-Speed, 1-Needle, Drop-Feed,
Needle-Feed Automatic Thread
Trimmer
KM-506/KM-530 Series
High-Speed 1-Needle, Drop-Feed
Knife-Attached Automatic Thread
Trimmer
High-Speed, 1-Needle, Drop-Feed,
Needle-Feed Knife-Attached
Automatic Thread Trimmer
1) For use with maximum ease,
please be sure to read this manual
thoroughly before use.
2) Keep this manual for reference in
case of machine malfunction or
breakdown.
MMMMEE--007700442266
Keystone Sewing Machine Company, Inc.
833 N 2nd Street, Philadelphia, PA 19123 USA
215/922.6900
info@keysew.com
www.keysew.com

SunStar KM-506 Series Specifications

General

Brand	SunStar
Model	KM-506 Series
Category	Sewing Machine
Language	English

Summary

Safety Rules for Machines

Understanding Safety Marks

Explains "Danger", "Warning", and "Caution" symbols used in the manual.

Machine Handling Safety

Covers safe practices for moving, installing, and troubleshooting the sewing machine.

Operational Safety Guidelines

Details safety instructions for operating the machine and its components.

Caution Mark Placement and Content

Identifies caution mark locations and explains their meanings for user awareness.

Specifications

Automatic Trimmer Series Specifications

Lists specifications for KM-250, KM-350, KM-506, and KM-530 series models.

Motor and Automation Device Specifications

Details specifications for servo motors, 470 motors, controllers, and optional devices.

Installation

Machine Head and Chip Plate Installation

Instructions for installing the machine head and chip discharge plate.

Solenoid, Lubrication, and Belt Tension

Steps for installing resistance box, lubrication, and adjusting belt tension.

Program Unit and Belt Cover Installation

Procedures for installing the program unit and belt covers.

Location Detector Assembly and Adjustment

Assembling location detectors and adjusting their positions for stop control.

Stop Position Check and Back Tack Button

Verifying machine stop positions and explaining the back tack button's functions.

Control and Adjustment of the Sewing Machine

Needle and Bar Adjustments

Steps for inserting the needle and adjusting the needle bar.

Timing, Lubrication, and Threading Procedures

Adjusting needle/hook timing, thread take-up lever lubrication, and routing upper thread.

Hook Lubrication and Oil Supply Adjustment

Checking and adjusting the oil supply level for the hook.

Lower Thread Insertion and Upper Thread Routing

Procedures for inserting lower thread, tension, and routing upper thread.

Upper Thread Tension and Release Control

Adjusting main thread, take-up lever spring, auxiliary thread, and thread release.

Presser Foot and Knee Lifter Adjustments

Adjusting height and tension of presser foot and automatic knee-lifter.

Stitch Length and Feed Dog Adjustments

Adjusting stitch length, feed dog height, inclination, and feed cam timing.

Needle Movement and Feed Cam Adjustment

Adjusting needle movement and feed cam timing for optimal operation.

Trimmer Timing Adjustment

Detailed steps for adjusting the timing of the thread trimmer.

Blade Tension, Knife Replacement, and Bobbin Catcher

Adjusting fixed blade tension, replacing knives, and adjusting the bobbin catcher.

Wiper Adjustment

Procedures for adjusting the wiper for different machine series.

Knife Adjustment Details

Adjusting the height, front-back, and left-right position of the knife.

Chip Discharge Guide and Cutting Width

Using chip discharge guides and changing cutting width components.

Cause of Troubles and Troubleshooting

Sewing Machine Troubleshooting Guide

A guide listing common symptoms, root causes, and corrective actions for machine issues.