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JUKI LS-1342 User Manual

JUKI LS-1342
60 pages
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1. SPECIFICATIONS
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Item
Model
Model name
Application
Sewing speed
Needle
Thread possible to be
sewn
Thread possible to be
trimmed
Stitch length
Presser foot lift
Stitch length adjusting
mechanism
Reverse stitch adjusting
method
Thread take-up
Needle bar stroke
Alternate foot stroke
Hook
Feed mechanism
Top and bottom feed
actuation mechanism
Thread trimming
mechanism
Lubrication
Lubricating oil
Cylinder bed diameter
Free space for sewing
Size of handwheel
Motor
Specifications
LS-1341
LS-1342 LS-1342-7
Cylinder-Bed, 1-
Needle, Unison
Feed, Lockstitch
Machine with
Automatic
Thread Trimmer
(Large Hook)
Cylinder-Bed, 1-Needle, Unison
Feed, Lockstitch Machine
(Large Hook)
For heavy-weight materials
Max. 2,500 rpm
#50 to #8 #40 to #5 #30 to #5
#30 to #5
Max. 6 mm (normal/reverse feed)
Hand lifter : 9 mm Knee lifter : 16 mm
By dial
Lever type
Slide thread take-up
36 mm
Ellipse feed
Timing belt
Central oil wick lubrication by tank (partially by manual)
JUKI New Defrix Oil No. 2 (equivalent to ISO VG32)
72mm
255 x 100 mm
V belt effective diameter : ø93.3 mm Outer diameter : ø160 mm
4P, 400W SC-380
SCHMETZ 135 X 17 Nm 100 to 180 Standard : Nm 160
Air cylinder type
(with touch-back
switch)
2.5 mm to 6.5 mm Slot adjusting type
1 mm to 6.5 mm Alternate foot stroke
adjusted by dial
Full-rotary vertical-
axis standard hook
(Latch type)
Full-rotary vertical-
axis 1.6-fold hook
(Cap type)
Full-rotary vertical-axis 1.6-fold hook
(Latch type)
Cam-driven
scissors type
LS-1340
Cylinder-Bed, 1-
Needle, Unison
Feed, Lockstitch
Machine
(Standard Hook)
SCHMETZ 135
X 17 Nm 100 to
180 Standard :
Nm 140

Table of Contents

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JUKI LS-1342 Specifications

General IconGeneral
BrandJUKI
ModelLS-1342
CategorySewing Machine
LanguageEnglish

Summary

Specifications

Standard Adjustment

Needle Entry Position

Adjusts the vertical and lateral placement of the needle in the throat plate.

Longitudinal Position of the Feed Dog

Sets the forward and backward movement of the feed dog relative to the needle.

Lateral Position of the Feed Dog

Aligns the feed dog horizontally with the needle hole in the throat plate.

Height of the Feed Dog

Sets the vertical height of the feed dog relative to the throat plate.

Needle-to-Hook Timing

Ensures correct synchronization between the needle and hook for stitch formation.

Height of the Hook

Sets the vertical position of the hook relative to the needle.

Adjusting the Inner Hook Guide

Adjusts the clearance between the inner hook guide and the hook.

Lift of the Presser Foot

Adjusts the height the presser foot lifts using hand or knee control.

Feed Cam Timing

Synchronizes the horizontal and vertical feed cam movements for proper feeding.

Feed Motion

Controls the alternate vertical movement of the walking foot and presser foot.

Horizontal Feed Arm

Adjusts the horizontal feed arm for proper needle sway and connection.

Stitch Length of Normal/Reverse Feed

Sets the stitch length for both forward and reverse feeding.

Balancer (LS-1340 and LS-1341 only)

Balances the machine's operation, particularly for specific models.

Position of the Reverse Feed Control Lever

Adjusts the position of the lever that controls reverse feeding.

Safety Clutch

Explains the function and resetting procedure for the safety clutch.

Standard Adjustment of Thread Trimmer Components (LS-1342-7)

Thread Trimmer Device Adjustments

Adjusts the moving knife, fixed knife, solenoid, and cam for thread trimming.

Alternate Vertical Dial Settings

Configures the alternate vertical dial for speed control and movement detection.

SC-380 Parameter Adaptation

Adapts the SC-380 control unit parameters for specific machine models.

Installation of Optional Parts

Automatic Reverse Feed Device Installation

Procedures for installing the automatic reverse feed device and its components.

Automatic Presser Foot Lifter Installation

Installation of the automatic presser foot lifter and its components.

DL Device Installation (LS-1342)

Steps for installing the DL device and its related switch.

Knee Lifter Shaft (Pedal Type) Installation

Procedures for installing the knee lifter shaft for pedal operation.

Binder Kit Installation

Instructions for installing the binder kit accessory.

Portion to Which Locktite is Applied

Selective Parts and Consumable Parts

Handwheel Marker Dots

Lubrication Route Diagram

Troubles and Corrective Measures

Sewing Related Troubles

Identifies and provides solutions for common sewing problems like thread breakage.

Thread Trimming Related Troubles

Diagnoses and resolves issues related to thread trimming failures.

Drawing of the Table