JUKI LU-2828-7 User Manual

40133310
No. E407-03
ENGINEER’S MANUAL
Unison-feed, Lockstitch Machine with Vertical-axis Large Hook
LU-2800 Series
LU-2810, 2810-7, 2860, 2860-7
LU-2810-6, 2860-6, 2828-6, 2828-7
LU-2818-7, 2868-7

JUKI LU-2828-7 Specifications

General

Type	Lockstitch
Lubrication	Automatic
Needle Bar Stroke	36 mm
Lift of the Presser Foot	6 mm
Weight	30 kg
Feed Mechanism	Walking foot
Hook	Rotary hook
Motor	AC Servo Motor
Max Sewing Speed	2, 800 rpm

Summary

Safety Precautions

General Safety Guidelines

Covers basic precautions, risk levels, warning labels, and general safety advice.

Operational Precautions

Safety measures during transportation, unpacking, installation, and operation.

Maintenance and Environment Safety

Safety considerations for lubrication, maintenance, and operating environment.

Specifications

Model Specifications

Standard Adjustment Procedures

Needle Entry Position

Adjusting needle entry for standard and European gauge types.

Feed Dog and Hook Height

Needle-to-Hook Timing

Aligning the needle and hook for optimal stitch formation and timing.

Presser Foot Lift Adjustment

Feed Adjustment

Adjusting horizontal and vertical feed cam timing for precise feeding.

Stitch Length Adjustment

Safety Clutch Adjustment

Lubrication Procedures

Thread Trimmer Device Adjustments

Adjusting counter knife, clamp spring, and moving knife positions.

2P Feed Adjustment

Procedures for zero-point alignment and stitch length adjustment of 2P feed.

Applying Grease

Grease Application Procedures

Troubles and Corrective Measures

Sewing Troubles and Solutions

Troubleshooting guide for common sewing issues.

Thread Trimming Troubles and Solutions

Troubleshooting guide for thread trimming failures.