Pfaff hobbylock 4752 User Manual

5
Seam width, setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Securing the seam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27, 28
Sewing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Sewing light cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Sewing problems and their solutions. . . . . . . . . . . . . . . . . . . . 42, 43
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Stitch formation correction measures . . . . . . . . . . . . . . . . . . . 32 - 36
Stitch length setting knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Stitch length, setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Stitch width latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Swivel plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Telescoping thread guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Thread chain cutter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Thread net . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Thread tensions, setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Thread unreeling disc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Threading aid for looper thread . . . . . . . . . . . . . . . . . . . . . . . . 13, 15
Threading aid for needle thread . . . . . . . . . . . . . . . . . . . . . . . . 16, 18
Threading paths/overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
Threading the lower overedge looper (yellow) . . . . . . . . . . . . 14, 15
Threading the machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Threading the needle(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16, 17, 18
Threading the upper overedge looper (red). . . . . . . . . . . . . . . 12, 13
Threading, important note. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Threads and needles chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Upper blade, changing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Upper blade, disengaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Waste container . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Pfaff hobbylock 4752 Specifications

General

Differential Feed	Yes
Speed	1300 stitches per minute
Adjustable Stitch Length	Yes
Adjustable Stitch Width	Yes
Stitch Length	1.0 - 4.0 mm
Type	Overlock
Number of Threads	4
Stitch Types	Overlock, Rolled Hem
Stitch Width	3.0 - 7.0 mm
Needles	2

Summary

Parts of the Hobbylock 4752

IMPORTANT SAFETY INSTRUCTIONS

DANGER - Electric Shock Risks

Critical warnings about electrical shock hazards and prevention.

WARNING - Personal Injury Risks

Warnings regarding burns, fire, injury from misuse, or moving parts.

Accessories

Waste Container and Accessory Box

Guide to properly attach the waste container and store the accessory box.

Connecting to Power Supply

Machine Operation Basics

Sewing Speed Control

Adjust sewing speed using the foot control pedal.

Handwheel and Cover Operations

Instructions for handwheel rotation, swivel plate, and looper cover use.

Thread Guide and Accessory Setup

Telescoping Thread Guide Adjustment

Raising and locking the telescoping thread guide for proper threading.

Thread Unreeling Discs and Nets

Attaching discs and nets for smooth thread feeding from spools.

Threading the Machine

Threading the Upper Looper (Red)

Step-by-step guide for threading the upper looper.

Threading the Lower Looper (Yellow)

Step-by-step guide for threading the lower looper.

Threading the Left Needle (Blue)

Step-by-step guide for threading the left needle.

Threading the Right Needle (Green)

Step-by-step guide for threading the right needle.

Seam Width Adjustment

Setting Standard and Rolled Hem Seam Width

Adjusting seam width for standard and rolled hem programs.

Stitch and Feed Adjustments

Setting the Stitch Length

Adjusting the desired stitch length using the setting knob.

Setting the Differential Feed Ratio

Adjusting the ratio of the two feed dogs.

Presser Foot Maintenance

Presser Foot Pressure and Handling

Adjusting pressure and steps for removing/attaching the presser foot.

Needle Configuration and Changes

Inserting Needles

Proper insertion of right and left needles according to flat side.

Needle Usage Modes

Using right/left needle only, or for three-thread sewing.

Upper Blade Adjustment

Disengaging and Engaging the Upper Blade

Steps to disengage and re-engage the upper blade.

Setting the Stitch Width Latch

Sewing Process Guide

Starting, Finishing, and Using Seam Guidelines

Guide for starting, finishing seams, and using positioning guidelines.

Seam End Securing and Starting

Securing Seam Ends

Methods to prevent seams from coming undone.

Stitching the Beginning of the Seam

Initial steps for starting a seam.

Stitching the End of the Seam

Thread and Needle Selection

Threads and Needles Chart

Guide for selecting appropriate threads and needles by fabric type.

Setting Thread Tension

How to adjust thread tension for optimal stitching.

Program Overview

Program-Specific Thread Tension Values

Stitch Formation Correction Measures

4-Thread Overedge Seam Corrections

Adjusting tensions for correct 4-thread overedge seams.

3-Thread Overedge Seam Corrections

3-Thread Flatlock Seam Corrections

Rolled Hem Seam Corrections

Folded Rolled Hem Seam Corrections

Optional Accessories

Machine Maintenance and Cleaning

General Machine Cleaning

Steps for cleaning the machine and removing waste thread.

Cleaning the Feed Dog

Detailed steps for cleaning the feed dog.

Lubricating the Machine

Changing the Upper Blade

Light Bulb Replacement and Machine Transport

Changing the Light Bulb

Steps to remove and replace the sewing machine light bulb.

Transporting the Machine

How to safely grip and transport the sewing machine.

Troubleshooting Sewing Problems

Needle and Thread Issues

Solutions for needle breakage, thread breaks, and skipped stitches.

Stitch Formation and Fabric Feed

Correcting stitch formation faults and fabric feed issues.

Machine Operation and Fabric Feed Issues

Fabric Trimming and Feed Problems

Solutions for untrimmed fabric and uneven feeding.

Machine Not Operating

Troubleshooting steps when the machine fails to operate.

Machine Specifications and Contents

Technical Specifications

Details on sewing speed, stitch length, dimensions, and weight.

Packing Contents

List of items included with the sewing machine.

Intellectual Property