Lervia FREE-ARM KH 4001 User Manual

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KOMPERNASS GMBH · BURGSTRASSE 21 · D-44867 BOCHUM

www.kompernass.com

ID-Nr.: KH4001-04/08-V1

6

KH 4001

FREE-ARM SEWING MACHINE

FREE-ARM SEWING MACHINE

Operating instructions

CV_KH4001_E4521_LB6 05.05.2008 13:53 Uhr Seite 1

Table of Contents

Questions and Answers:

B
buchananmarieAug 14, 2025
Why is the upper thread breaking on my Lervia FREE-ARM KH 4001 Sewing Machine?
- N
  Nicholas WheelerAug 14, 2025
  The upper thread may be breaking due to several reasons: * The upper thread might be incorrectly inserted; make sure to thread it correctly. * The upper thread tension might be too tight; try loosening it a little. * The upper thread might be tangled; re-thread it. * The spool of thread might be incorrectly inserted; re-insert it correctly. * The needle might be bent or blunt; replace it. * The combination of needle size and thread strength might be inappropriate; check this combination.
B
Brandy PrattAug 18, 2025
What to do if the needle keeps breaking on my Lervia FREE-ARM KH 4001 Sewing Machine?
- M
  Mark RyanAug 18, 2025
  If the needle keeps breaking, it might be due to: * Incorrect needle insertion; ensure the needle is inserted correctly. * An inappropriate combination of needle size and thread strength; verify the combination. * Pulling the fabric; allow the feed dog to transport the material.

Lervia FREE-ARM KH 4001 Specifications

General

Type	Free-arm Sewing Machine
Model	KH 4001
Brand	Lervia
Buttonhole	Automatic
Power Source	Electric
Bobbin System	Front-loading

Summary

Safety Information

Correct Usage

Appliance Description

Setup

Sewing Machine Operation

Power Switch and Foot Pedal

Using the power switch and foot pedal to control machine functions and speed.

Needle and Foot Replacement

Procedures for changing sewing needles and sewing feet.

Operating Elements

Recommended Stitch Lengths

Setting the Stitch Length

Threading the Needle and Preparation

Engaging the Spool

Inserting the Spool

Threading the Upper Thread

Sewing with the Twin Needle

Tensioning the Thread

Thread Tension Adjustment

Upper Thread Tension Issues

Troubleshooting and adjusting upper thread tension when it is too low or too high.

Lower Thread Tension Adjustment

Procedure to adjust lower thread tension, including spool adjustments.

Correct Thread Tension Guide

Guidance on achieving correct thread tension based on fabric type and needle size.

Straight Stitch Operations

Straight Stitch Types and Seam Finishing

Using straight stitches for seams, including starting, direction changes, and finishing.

Zigzag and Satin Stitch Operations

Zigzag Stitch Settings

Satin Stitch Application

Creating satin stitches using zigzag stitch settings for decorative purposes.

Sewing Blind Hems

Sewing with Elastic Stitches

Finishing Edges

Sewing Buttonholes

Securing and Cutting Buttonholes

Steps for securing buttonhole edges and cutting the buttonhole open.

Fine Adjustment for Buttonholes

Sewing on Buttons

Sewing in Zippers

Monograms and Embroidery

Embroidery Techniques

Monogram and Motive Embroidery

Machine Care and Maintenance

Changing Lamp Bulb and Lubrication

Cleaning Procedures

Troubleshooting

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