typical GC6760 SERIES - User Manual

SETUP, INSTRUCTION- & SERVICE MANUAL
GC6760SERIES
DOUBLE LOCKSTITCH HIGH-SPEED SEAMER
WITH DIRECT DRIVE
WITH BOTTOM AND NEEDLE FEED

typical GC6760 SERIES Specifications

General

Brand	typical
Model	GC6760 SERIES
Category	Sewing Machine
Language	English

Summary

SAFETY

1;1 General Safety Instructions

Essential safety guidelines for machine operation and user protection.

1;5 Machine Warning Signs

INSTALLATION

4;7 Machine Lubrication

Instructions for filling and maintaining the machine's lubrication system.

4;8 Test Run Procedure

SETTING UP

5;1 Inserting the Needle

Step-by-step guide for correctly inserting the sewing needle.

5;3 Bobbin Winding Process

Detailed process for winding thread onto the bobbin.

5;4 Inserting the Bobbin Case

Guide on how to properly insert the wound bobbin case into the hook.

5;5 Threading the Machine

Comprehensive instructions for threading the sewing machine's upper thread path.

5;6 Adjusting Stitch Length

SEWING

6;1 Starting Machine and Back Tacking

Procedures for starting the machine and performing back tacking operations.

THREAD TENSION

7;1 Setting Lower Thread Tension

Steps for adjusting the tension of the lower thread using the bobbin case.

7;2 Setting Upper Thread Tension

Instructions on how to regulate the tension of the upper thread.

7;3 Adjusting Presser Foot Pressure

How to adjust the pressure exerted by the presser foot.

7;4 Setting Thread End Length

CLEANING & MAINTENANCE

8;1 Daily Cleaning and Maintenance

Routine daily cleaning procedures for the sewing machine.

8;1;2 Checking Transmission Oil Level

How to check and maintain the oil level in the transmission.

8;1;3 Refilling Machine Oil

Steps for refilling the machine's oil reservoir.

8;1;4 Checking Oil Level

Procedures for monitoring the oil level using the sight window.

8;1;5 Checking Needle and Thread

8;2 Machine Lubrication

HOOK LUBRICATION SETTINGS

9;1 Checking and Adjusting Hook Lubrication

Procedure to check and adjust the oil spray amount for the hook.

ADJUSTMENTS

10;1 Adjusting the Safety Switch

10;2 Adjusting the Take Up Spring

How to adjust the position and strength of the take-up spring.

10;3 Adjusting the Thread Control

10;4 Adjusting Presser Foot Height

Setting the correct height for the presser foot.

10;5 Adjusting Feed Dog Height

Setting the height of the feed dogs relative to the needle plate.

10;6 Adjusting Feed Dog Angle

Adjusting the angle of the feed dogs for proper material feeding.

10;7 Pre-adjusting Needle Bar Height

Pre-adjusting the needle bar height for optimal timing.

10;8 Adjusting Lower Feeding Movement

10;9 Adjusting Hook Distance and Needle Height

Setting the correct distances for hook, needle bar rise, and needle height.

10;10;1 Pre-adjusting Roller Lever

10;10;2 Pre-adjusting Cam

10;10;3 Setting Movable Thread Catcher

10;10;4 Timing the Cam

10;10;5 Setting Tension Release

10;10;6 Setting Knife Pressure

10;11 Adjusting the Foot Pedal

Fine-tuning the foot pedal for speed and reverse control.

10;12 Sewing Stretch or High Pile Material

TROUBLESHOOTING & ERROR MESSAGES

11;1 Loose Upper Thread Tension

Troubleshooting guide for issues with loose upper thread tension.

11;2 Loose Lower Thread Tension

11;3 Loops Appear in Seam

11;4 Missing Stitches on Startup

11;5 Skipped Stitches During Sewing

11;6 Irregular Stitch Length

11;7 Puckered Seam Issues

11;8 Shifted Material Layers

11;9 Bobbin Knots or Spinning

11;10 Upper and Lower Thread Breakage

11;11 Faulty Thread Cutting

11;12 Needle Breakage Causes

11;13 Oil Level Not Visible

11;14 Machine Does Not Start

11;15 Machine Not Running at High Speed

11;16 Machine Stops During Sewing

11;17 No Readout on Control Panel