ENGLISH
MB-1373,1377
INSTRUCTION MANUAL
CONTENTS
1. SPECIFICATIONS …………………………………………………………………………………………….. 1
2. PREPARATION OF THE SEWING MACHINE
2-1. Installation …………………………………………………………………………………………………………………………1
2-2. Lubrication …………………………………………………………………………………………………………………………2
2-3. Attaching the needle …………………………………………………………………………………………………………..2
2-4. Attaching the needle bar cover …………………………………………………………………………………………… 3
2-5. Attaching the button tray assembly …………………………………………………………………………………….3
2-6. Threading the machine ………………………………………………………………………………………………………. 3
………………………………………………………. 1
3. ADJUSTMENT OF THE SAWING MACHINE ……………………………………………………….. 4
3-1.
Thread tension adjustment………………………………………………………………………………………………………… 4
3-2.
Adjustment of the thread pull-off lever ………………………………………………………………………………………. 4
3-3. Adjusting the tension lever …………………………………………………………………………………………………4
3-4. Adjusting the nipper …………………………………………………………………………………………………………..5
3-5. Adjusting the thread tension guide on the face plate …………………………………………………………… 5
3-6.
Needle-to-looper relation …………………………………………………………………………………………………………………… 5
3-7. Position of the needle guide ……………………………………………………………………………………………….6
3-8. Height of the button clamp ………………………………………………………………………………………………….6
3-9. Work pressing force …………………………………………………………………………………………………………..6
3-10.
Adjustment of the button clamp stop lever ………………………………………………………………………….6
3-11. Timing of thread tension release ………………………………………………………………………………………. 7
3-12. Setting for 2- or 4-hole buttons ………………………………………………………………………………………….7
3-13. Setting a number of stitches …………………………………………………………………………………………….. 8
3-14. Adjusting the position of the stop-motion …………………………………………………………………………. 8
3-15. Adjusting the position of the moving knife ………………………………………………………………………..9
3-16. Clearance between the button clamp lifting lever and the adjusting screw …………………………9
3-17. How to set the L-shaped lifting rod …………………………………………………………………………………… 9
3-18. Knot-tying mechanisms ………………………………………………………………………………………………….10
(1) Adjusting the knot-tying connecting plate
(2) Adjusting the knot-tying arm stopper ………………………………………………………………………………..10
(3) Adjusting the knot-tying notch …………………………………………………………………………………………10
(4) Changeover of with/without knot-tying …………………………………………………………………………….. 11
3-19. Adjusting the thread tension controller No. 3
(1) Assembly procedure
(2) Adjustment …………………………………………………………………………………………………………………..12
……………………………………………………………………………………………………..12
………………………………………………………………………….10
………………………………………………………………….. 12
4. MAINTENANCE, SUBCLASS MODELS AND ATTACHMENTS ……………………………. 13
4-1. How to connect the metal ttings of the belt ……………………………………………………………………..13
4-2. Subclass models …………………………………………………………………………………………………………….. 13
4-3. Attachments ……………………………………………………………………………………………………………………..14
(1) Attachments for shank buttons (Pearl buttons) (Z033)
(2) Attachment for the rst process of wrapped-around buttons (Z041) ……………………………………..15
(3) Attachment for the second process of wrapped-around buttons (Z035) ………………………………..16
(4) Attachment for snaps (Z037) …………………………………………………………………………………………..16
(5) Attachment for metal buttons (Z038) ………………………………………………………………………………..17
4-4. Motor pulley and belt
……………………………………………………………………………………………………….. 17
……………………………………………………….15
5. TROUBLES AND CORRECTIVE MEASURES ……………………………………………………. 18
1. SPECIFICATIONS
MB-1373 MB-1377
Sewing speed
Number of stitches 8, 16 and 32 stitches
Feed amount Lateral feed 2.5 to 6.5mm
Longitudinal feed 0, 2.5 to 6.5mm
Button size
Needle used
Lubricating oil
Noise
— Equivalent continuous emission sound pressure level (LpA) at the workstation :
A-weighted value of 84 dB; (Includes KpA = 2.5 dB); according to ISO 10821-
C.6.3 -ISO 11204 GR2 at 1,300 sti/min.
Normal 1,300 sti/min (Max. 1,500 sti/min)
Longitudinal feed 0, 2.5 to 4.5mm
10 to 28 mm
TQx1 #16 (#14 to #20) TQx7 #16 (#14 to #20)
JUKI New Defrix Oil No. 1
2. PREPARATION OF THE SEWING MACHINE
2-1. Installation
Put rubber cushion 1 on the table,
2
5
6
7
place the machine head on the rubber
cushion and x it to the table using
screws 2, plain washers 3 and nuts
4
7
Lateral feed 2.5 to 6.5mm
. Attach “S” chain hook 6 and chain
to stop motion trip lever 5.
3
4
1
– 1 –
2-2. Lubrication
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
1
2
!3
4
3
!2
6
!4
5
7
!5
8
!0
9
!6
!1
1) Open the side cover, and apply JUKI New Defrix Oil No. 1 to the
portions shown by the red marks 1 to !3 (8 : MB-1377 only).
(Apply approximately 1 cc of oil to the respective lubricating
places one to two times a week.)
2) Loosen connecting screw !4, tilt the machine head backward
and apply grease (JUKI designated grease) to crossed helical
gear !6 and worm gear !7.
3) Check, approximately once a week, that oil amount is sufcient
to reach the top of the oil felt placed inside the bed mounting
base. If the amount of oil is insufcient, add an adequate amount
of oil. At this time, also apply oil to crank rod !5.
2
[Caution at the time of lubricating]
Take care not to allow speed slowing friction
1.
wheel 1 and friction plate 2 to be clogged with
1
oil to prevent them from the deterioration of
retardation performance. In addition, when the
components are clogged with oil, wipe the oil
from them.
2.
Take care not to allow the machine belt to
be clogged with oil to prevent it from the
deterioration.
!7
2-3. Attaching the needle
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
2
1
Use a standard needle of TQx1 #16.
★
Loosen setscrew 1 and hold needle 2 with the long
groove facing toward you. Then fully insert it into the
hole in the needle bar, and tighten setscrew 1.
– 2 –
2-4. Attaching the needle bar cover
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
4
3
2
1
2-5. Attaching the button tray assembly
1
1) Loosen screw 2 and remove thread guide 3.
Place needle bar guard 1 under thread guide
2)
and attach thread guide 3 so that lever 4
3
comes to the center of it at the start of the ma-
chine.
3) Fix the cover with screw 2.
Insert the posts of button tray 1 in hole on the right
of the machine sub-base and tighten each setscrew
. If it is difcult for the operator to pick up the but—
2
tons on the right side, change it to hole 3 on the left
side.
3
2
2-6. Threading the machine
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
!4
A
!6
!7
!8
@0
@1
!5
!9
!3
!1
!2
!0
9
8
7
5
4 3
6
2
1
Thread the machine head in the order of 1 to @1 as shown in the illustration given above. Then, pass the
thread through the needle eye from the front for approximately 60 to 70 mm as you depress nipper releasing
knurled thumb nut A.
* Standard needle is TQ X 1 #16.
– 3 –
3. ADJUSTMENT OF THE SAWING MACHINE
3-1.
Thread tension adjustment
2
3-2.
Adjustment of the thread pull-off lever
1
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
1
3
2
Tension post No. 1 1 is used to adjust the thread
tension to sew on the button and a relatively low
tension will be enough. Tension post No. 2 2 is
used to adjust the thread tension applied to the root
of the button sewing stitches. This tension must be
determined according to the type of thread, fabric
and thickness of the button and must be higher than
that of tension post No. 1 1. Turn the tension nuts
clockwise to increase or counterclockwise to reduce
the thread tension.
A
At the time of X
stitching
B
To adjust the thread pull-off lever 1, insert a screwdriver through an opening in the machine arm side cover
(left), loosen screw 2 and adjust the position of nipper bar block (rear) 3 to the left or the right. If the end of
thread is drawn from arrow hole A in the button after sewing, change the position of nipper bar block (rear) 3
to the left. Move the lever to the right when the thread end comes out from arrow hole B.
3-3. Adjusting the tension lever
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
1) When the machine is in the stop-motion state,
loosen screw 1.
2) Tighten setscrew 1 so that there is a clearance
of 8 to 10 mm as a standard between the end of
thread tension guide 3 and end of lever 4.
After the adjustment, make sure that the
thread path is within the slot as illustrated in
Fig. A when the machine starts.
If the thread paths do not coincide with each
other, loosen screw 2 in the tension thread
guide and adjust it properly.
2
8 to 10 mm
A
3
1
4
– 4 –
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JUKI MB-1373 Sewing Machine PDF User Guides and Manuals for Free Download: Found (3) Manuals for JUKI MB-1373 Device Model (Engineer’s Manual, Instruction Manual)
The JUKI MB-1373 is a semi-industrial sewing machine that has gained considerable attention in the crafting and garment-making communities. Known for its durability and exceptional performance, the MB-1373 has become a go-to choice for both hobbyists and professionals alike. With its comprehensive features and ease of use, it stands out among competitors, making it an appealing investment for those looking to step up their sewing game.
One of the hallmark features of the JUKI MB-1373 is its powerful motor, which allows for consistent sewing even through thicker fabrics. This capability ensures that users can easily transition from lightweight materials to heavier fabrics such as denim or canvas without sacrificing stitch quality. The machine offers a high-speed sewing option, reaching speeds of up to 1,500 stitches per minute. This makes the MB-1373 an efficient choice for those who need to complete projects quickly without compromising on precision.
The user-friendly design of the JUKI MB-1373 is another significant advantage. It comes equipped with a simple threading system and an automatic needle threader, allowing users to set up the machine easily and get started with their projects in no time. The LCD screen displays various settings, ensuring that users can adjust the stitch type and length with ease. For beginners, the machine also features a built-in tutorial that guides users through different functions naturally.
In terms of versatility, the JUKI MB-1373 does not disappoint. It includes a variety of stitch options, with over 100 built-in stitches, including utility stitches, decorative stitches, and quilting stitches. This extensive selection allows users to explore various sewing techniques and creativity in their projects. Additionally, the machine offers adjustable stitch widths and lengths, providing further customization for diverse sewing needs.
One of the standout characteristics of the MB-1373 is its sturdy construction. Made from high-quality materials, the machine remains stable during operation, which is especially valuable for larger projects. Its weight and design make it capable of handling consistent use over an extended period, which is essential for those who use the machine extensively on a daily basis.
Maintenance is another crucial aspect, and the JUKI MB-1373 features an easy-access bobbin and a removable plate that simplifies cleaning routines significantly. Regular maintenance ensures the longevity of the machine and enhances performance, which is a major consideration for serious sewing enthusiasts.
Overall, the JUKI MB-1373 is an excellent choice for anyone looking to invest in a reliable and high-performance sewing machine. It combines advanced features with user-friendly operation, making it suitable for all skill levels. Whether you are a beginner exploring your passions or an experienced sewer tackling complex projects, the MB-1373 provides the tools and efficiency needed to succeed.
In conclusion, the JUKI MB-1373 is a robust, versatile, and user-friendly sewing machine that has proven to be an asset in any sewing room. Its high-speed capabilities, range of stitch options, and sturdy build quality make it a worthy contender in the world of sewing machines. If you are in the market for a machine that can grow with your skills and meet your various sewing needs, the JUKI MB-1373 is an investment worth considering.
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Comments, Questions and Opinions:
FAQ: Types of Manuals and Their Contents
JUKI MB-1373 Manuals come in various types, each serving a specific purpose to help users effectively operate and maintain their devices. Here are the common types of JUKI MB-1373 User Guides and the information they typically include:
- User Manuals: Provide comprehensive instructions on how to use the device, including setup, features, and operation. They often include troubleshooting tips, safety information, and maintenance guidelines.
- Service Instructions: Designed for technicians and repair professionals, these manuals offer detailed information on diagnosing and repairing issues with the device. They include schematics, parts lists, and step-by-step repair procedures.
- Installation Guides: Focus on the installation process of the device, providing detailed instructions and diagrams for proper setup. They are essential for ensuring the device is installed correctly and safely.
- Maintenance Manuals: Provide guidance on routine maintenance tasks to keep the device in optimal condition. They cover cleaning procedures, part replacements, and regular servicing tips.
- Quick Start Guides: Offer a concise overview of the essential steps needed to get the device up and running quickly. They are ideal for users who need immediate assistance with basic setup and operation.
Each type of JUKI MB-1373 instruction is designed to address specific needs, ensuring users have the necessary information to use, maintain, and repair their devices effectively.
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