Harbor Freight Tools 91500 Assembly And Operating Information

OVERLOCK SEWING MACHINE

TWO NEEDLE - FOUR THREAD

Model 91500

ASSEMBLY AND OPERATING INFORMATION

3491 Mission Oaks Blvd., Camarillo, CA 93011

Visit our Web site at http://www.harborfreight.com

TO PREVENT SERIOUS INJURY,

READ AND UNDERSTAND ALL WARNINGS

AND INSTRUCTIONS BEFORE USE.

Copyright© 2004 by Harbor Freight Tools®. All rights reserved. No portion of this

manual or any artwork contained herein may be reproduced in any shape or form

without the express written consent of Harbor Freight Tools.

For technical questions please call 1-800-444-3353.

PRODUCT SPECIFICATIONS

Item Description

Electrical Requirements 120 V / 60 Hz.

Power Switch Type: Rocker.
Power Cord Length: 6 Feet.

Power Plug Type: 2-Prong Double Insulated.
Sewing Speed 1300 SPM Maximum.
Machine Features Free Arm Style / Foot Control / Foot Pressure Adjusting Knob

Twin Needle Sewing / 3 or 4 Threads (Over Locking).

Auto Cutting Knives / Hand Wheel / Stitch Length Knob.

Left & Right Looper Thread Tension Dials / Thread Guide.

Right Thread Tension Dial / Hand Wheel / Carrying Handle.

Built-In Light.
Accessories 2mm Hex Key / 1.5mm Hex Driver / Small Screwdriver.

Flat Tweezers / Thumb Screwdriver / 10-Sewing Needles.
Overall Dimensions 11” W x 13” L x 11” H.
Weight 15.7 Pounds.

SAVE THIS MANUAL

You will need this manual for the saf ety warnings and precautions, assembly ,
operating, inspection, maintenance and cleaning procedures, parts lists, and
assembly diagrams . K eep your in voice with this manual. Write the in voice number
on the inside of the front cover. Keep this manual and invoice in a safe and dry
place for future reference.

UNPACKING

When unpacking, check to make sure all parts shown on the Parts Lists on pages 21
through 38 are included. If any parts are missing or broken, please call Harbor Freight

Tools at the number shown on the cover of this manual as soon as possible.

GENERAL SAFETY RULES

WARNING!

READ AND UNDERSTAND ALL INSTRUCTIONS

Failure to follow all instructions listed below may result in

electric shock, fire, and/or serious injury.

SA VE THESE INSTRUCTIONS

WORK AREA

1. Keep your work area clean and well lit. Cluttered and dark work areas invite
accidents.

SKU 91500 PAGE 2

2. Do not operate electric appliances in explosive atmospheres, such as in the
presence of flammable liquids, gases, or dust. Electric appliances create sparks
which may ignite the dust or fumes.

3. Keep bystanders, children, and visitors away while operating electric

appliances. Distractions can cause you to lose control.

ELECTRICAL SAFETY

4. Grounded appliances must be plugged into an outlet properly installed and
grounded in accordance with all codes and ordinances. Never remove the
grounding prong or modify the plug in any way. Do not use any adapter
plugs. Check with a qualified electrician if you are in doubt as to whether the
outlet is properly grounded. If the appliance should electrically malfunction or

break down, grounding provides a low resistance path to carry electricity away
from the user.

5. Double insulated appliances are equipped with a polarized plug (one blade is

wider than the other). This plug will fit in a polarized outlet only one way. If
the plug does not fit fully in the outlet, reverse the plug. If it still does not fit,
contact a qualified electrician to install a polarized outlet. Do not change the
plug in any way. Double insulation eliminates the need for the three wire

grounded power cord and grounded power supply system.

6. Av oid body contact with grounded surfaces suc h as pipes, radiator s, ranges,
and refrigerators. There is an increased risk of electric shock if your body is
grounded.

7. Do not expose electric appliances to rain or wet conditions. Water

entering an electric appliance will increase the risk of electric shock.

8. Do not abuse the Power Cord. Never use the Power Cord to carry the appliance

or pull the Plug from an outlet. Keep the Power Cord away from heat, oil,
sharp edges, or moving parts. Replace damaged Power Cords immediately.

Damaged Power Cords increase the risk of electric shock.

9. This appliance is intended for indoor use only.

PERSONAL SAFETY

10. Stay alert. W atch what y ou are doing, and use common sense when operating
an electric appliance. Do not use an electric appliance while tired or under
the influence of drugs, alcohol, or medication. A moment of inattention while

operating an electric appliance may result in serious personal injury.

SKU 91500 PAGE 3

11. Dress properly. Do not wear loose clothing or jewelry. Contain long hair.
Keep your hair, clothing, and gloves away from moving parts. Loose clothes,
jewelry, or long hair can be caught in moving parts.

12. Av oid accidental starting. Be sure the Po wer Switch is off before plugging in.
Carrying electric appliances with your finger on the Power Switch, or plugging in
electric appliances with the Power Switch on, invites accidents. Make sure you are
prepared to begin work before turning the Power Switch “ON”.

13. Remove adjusting keys or wrenches before turning the electric appliance on.
A wrench or a key that is left attached to a rotating part of the electric appliance
may result in personal injury.

14. Do not overreach. Keep proper footing and balance at all times. Proper footing
and balance enables better control of an electric appliance in unexpected situations.

15. Always wear eye protection. Wear ANSI approved safety impact eye

glasses. ANSI approved saf ety impact ey e glasses are available from Harbor
Freight Tools.

TOOL USE AND CARE

17. Do not force the electric appliance. Use the correct appliance for your
application. The correct appliance will do the job better and safer at the rate for

which it is designed. There are certain applications for which this Sewing Machine
was designed. Do not use this Sewing Machine to do the work of a larger Sewing
Machine. Do not use this product for a purpose for which it was not intended.

18. Do not use the Sewing Machine if the Power Switch does not turn it on or off.
Any electric appliance that cannot be controlled with the Power Switch is dangerous
and must be replaced.

19. Disconnect the Power Cord Plug from the power source before making

any adjustments, changing accessories, or storing the Sewing Machine.

Such preventive safety measures reduce the risk of starting the appliance
accidentally.

20. Store idle electric appliances out of reach of children and other untrained
persons. Electric appliances are dangerous in the hands of untrained users.

21. Maintain tools with care. Keep cutting tools sharp and clean. Properly
maintained tools with a sharp cutting edge are less likely to bind and are easier to
control. Do not use a damaged tool. Tag damaged tools “Do not use” until repaired.

22. Check for misalignment or binding of moving parts, breakage of parts, and

any other condition that may affect the operation of the appliance. If damaged,
have the appliance serviced before using. Many accidents are caused by poorly

maintained appliances.

SKU 91500 PAGE 4

23. Use only accessories that are recommended by the manufacturer for your
model. Accessories that ma y be suitable for one appliance ma y become hazardous
when used on another appliance.

SERVICE

24. Appliance service must be performed only by qualified repair personnel.
Service or maintenance performed by unqualified personnel could result in a risk of
injury.

25. When servicing an appliance, use only identical replacement parts. Follow

instructions in the
manual. Use of unauthorized parts or failure to follow maintenance instructions

may create a risk of electric shock or injury.

“Inspection, Maintenance, And Cleaning”

section of this

GROUNDING

WARNING!

Improperly connecting the grounding wire can result in the risk of electric

shock. Check with a qualified electrician if you are in doubt as to whether the

outlet is properly grounded. Do not modify the power cord plug provided with

the appliance. Never remove the grounding prong from the plug. Do not use

the appliance if the power cord or plug is damaged. If damaged, have it
repaired by a service facility before use. If the plug will not fit the outlet,

have a proper outlet installed by a qualified electrician.

DOUBLE INSULATED APPLIANCES: APPLIANCES WITH TWO PRONG PLUGS

1. Appliances marked “Double Insulated” do not require grounding. They have a
special double insulation system which satisfies OSHA requirements and com­plies with the applicable standards of Underwriters Laboratories, Inc., the Cana­dian Standard Association, and the National Electrical Code. (See Figure A.)

2. Double insulated tools may be used in either of the 120 volt outlets shown in the
following illustration. (See Figure A.)

FIGURE A

SKU 91500 PAGE 5

EXTENSION CORDS

*

(

)

1.

Grounded

tools require a three wire extension cord.

Double Insulated

tools

can use either a two or three wire extension cord.

2. As the distance from the supply outlet increases, you must use a heavier gauge
extension cord. Using extension cords with inadequately sized wire causes a
serious drop in voltage, resulting in loss of power and possible tool damage.

(See Figure B.)

3. The smaller the gauge number of the wire, the greater the capacity of the cord.
For example, a 14 gauge cord can carry a higher current than a 16 gauge cord.

(See Figure B.)

4. If using more than one extension cord to make up the total length, make sure
each cord contains at least the minimum wire size required.

5. If you are using one extension cord for more than one appliance, add the name­plate amperes and use the sum to determine the required minimum cord size.

(See Figure B.)

6. If you are using an extension cord outdoors, make sure it is marked with the
suffix “W-A” (“W” in Canada) to indicate it is acceptable for outdoor use.

7. Make sure your extension cord is properly wired and in good electrical condition.
Always replace a damaged extension cord or have it repaired by a qualified
electrician before using it.

8. Protect your extension cords from sharp objects, excessive heat, and damp or
wet areas.

RECOMMENDED MINIMUM WIRE GAUGE FOR EXTENSION CORDS

(120 VOLT)

NAMEPLATE

AMPERES

At Full Load

25

Feet

0 – 2.0 18 18 18 18 16

2.1 – 3.4 18 18 18 16 14

3.5 – 5.0 18 18 16 14 12

5.1 – 7.0 18 16 14 12 12

7.1 – 12.0 18 14 12 10 -

12.1 – 16.0 14 12 10 - -

16.1 – 20.0 12 10 - - -

FIGURE B

* Based on limiting the line voltage drop

to five volts at 150% of the rated amperes.

EXTENSION CORD LENGTH

50

Feet

75

Feet

100

Feet

150

Feet

SKU 91500 PAGE 6

SYMBOLOGY

Double Insulated

Canadian Standards
Association

Underwriters
Laboratories, Inc.

Volts Alternating Current

Amperes
No Load Revolutions

per Minute (RPM)

FIGURE C

V ~

A

no

xxxx/min.

SPECIFIC SAFETY RULES

1. Maintain labels and nameplates on the Sewing Machine. These carry important
information. If unreadable or missing, contact Harbor Freight T ools f or a replacement.

2. Check for damaged parts. Before using this product, carefully check that it will
operate properly and perform its intended function. Check for damaged parts and
any other conditions that may aff ect the operation of this product. Replace or repair
damaged or worn parts immediately.

3. Keep fingers and hands away from the Needle when you turn the Power Switch

on, or while the Sewing Machine is operating.

4. Always disconnect the Sewing Machine from its electrical outlet before
performing any services, maintenance, or cleaning such as leaving the work

area, moving the machine from one location to another , changing Needles/Thread,
cleaning debris from the unit, etcetera. Never attempt to remove material stuck in
the moving parts of the Sewing Machine while it is plugged in. Never perform
layout, assembly, or setup work on the Table of the Sewing Machine when the
machine is plugged in.

5. Before use, the Sewing Machine should be placed on a flat, stable table surface,

capable of supporting the weight of the machine, workpiece, and any additional
pressure caused by working on it.

6. During operation, never place your head, hair, or hands in the proximity of
the Hand Wheel, Bobbin Winder, or motor.

7. Do not operate the Sewing Machine with any safety guards removed.

8. Use caution when threading the machine. Certain parts such as the Loopers,
Needles, and Knives are very sharp.

SKU 91500 PAGE 7

9. Never use bent or dull needles. Shut off and unplug the Sewing Machine and
promptly replace a bent or dull needle with one that is in proper working condi­tion.

10. Push or pull the fabric slowly when sewing. Pushing or pulling the fabric too
quickly may break the needle.

11. Always keep the Foot Controller free of dust, yarn, fabric, and other debris.

12. Never pour any liquids or insert any objects into the openings of the Sew-

ing Machine.

13. WARNING! People with pacemakers should consult their physician(s) before
using this product. Electromagnetic fields in close proximity to a heart pace­maker could cause interference to or failure of the pacemaker.

14. WARNING! The w arnings, precautions, and instructions discussed in this instruction
manual cannot cover all possible conditions and situations that may occur. It must
be understood by the operator that common sense and caution are factors which
cannot be built into this product, but must be supplied by the operator.

PRODUCT FEATURES

(55A)

(14B)

(55A)

(55A)

(32F)

(30A)

(13A)

(24A)

FIGURE D

(55A)

(38A)

(18F)

(9A)

9A. THREAD BRACKET ASS’Y.
55A. THREAD TENSION REGULA TING WHEEL.
14B. ADJUSTING SCREW.
30A. NEEDLE APPROACHER.
13A. MOVEABLE SEWING TABLE.
38A. UPPER THREAD GUIDE.
24A. LOOPER COVER.
9F . HAND WHEEL.
21E. FEED ADJUSTING KNOB.
1A. THREAD RACK BRACKET.
18F. POWER SWITCH.
32F. LAMP.

(1A)

(21E)

(9F)

LEFT LOOPER

(Machine With Cover Open)

PRESSER

FOOT

SPANNER

LOWER KNIFE

UPPER

KNIFE

RIGHT

LOOPER

ADJUSTING

FEED

KNOB

SKU 91500 PAGE 8

PREPARING THE SEWING MACHINE FOR USE

NOTE: For additional references to the parts listed in the following pages, refer to the
Assembly Diagrams on pages 23 through 38 of this manual.

To Thread The Sewing Machine:

1. CAUTION! Prior to performing this procedure, make sure the Power Switch
(18F) of the Sewing Machine is in its “OFF” position and the Power Wire
(29F) is unplugged from its electrical receptacle.

(See Figure D, page 8, and Figure I, page 12.)

2. Remove the Moveable Se wing Table (13A) from the Needle Approacher (30A) by
pulling the Table to the left. Then lift the Table upward and off the Sewing
Machine. (See Figure E.)

MOVEABLE SEWING TABLE (13A)

FIGURE E

NEEDLE APPROACHER

(30A)

3. Turn the Hand Wheel (9F) toward you until the Needle Holder (21B) is at its high­est position. Loosen the two Setting Screws (23B) with the Hex Driver (7G).
Insert two new Needles (26B) into the Needle Holder as far as they will go
with their

flat

surfaces to the BACK. Then, re-tighten the two Setting Screws to

secure the Needles in place. (See Figures D and F.)

NEEDLE HOLDER

(21B)

NEEDLE

(26B)

SETTING SCREW

(23B)

FIGURE F

SKU 91500 PAGE 9 REV 12/04

4. Set up the Thread Bracket Assembly (9A), and insert a spool of thread (not
included) onto each of the

four

Cones located on the Spool Stand (1A).

(See Figure G.)

5. Loop the four strands of thread through the Wire Hooks on the Thread Bracket
Assembly (9A) and on the Upper Thread Guide (38A). (See Figure G.)

6. Insert the four strands of thread into the slots on the left side of each Tension Dial
(55A). NOTE: Make sure to allow approximately 18” length of excess thread
hanging from each Tension Dial. (See Figure G.)

THREAD BRACKET ASSY.

UPPER THREAD GUIDE

(38A)

FRONT COVER

PLATE

(67A)

(9A)

WIRE HOOK

THREAD SPOOL

(NOT INCLUDED)

THREAD RACK

BRACKET

(1A)

TENSION DIAL

(55A)

FIGURE G

7. Open the Looper Cover (24A) by pushing it as far to the right as it will go. Then,
pull it downward. (See Figure D.)

8. When the Looper Cover (24A) is opened the interior mechanisms of the Sewing
Machine are exposed. As an aid in threading the four strands of thread through
the various mechanisms

each mechanism is color coded

to correspond with each

individual spool of thread. In example:
RED = SPOOL #1

YELLOW = SPOOL #2
GREEN = SPOOL #3
TURQUOISE = SPOOL #4

(See Figure H, next page.)

SKU 91500 PAGE 10

FRONT VIEW

(WITH LOOPER COVER (24A) OPEN)

SPOOL #4

(TURQUOISE)

4

SPOOL #3

(GREEN)

SPOOL #1

(RED)

SPOOL #2
(YELLOW)

2

2

NEEDLE

(26B)

3

4

1

RIGHT

LOOPER

(30C)

NEEDLE

(26B)

1

3

2

1

2

1

1

2

LEFT

LOOPER

(17C)

2

1

FIGURE H

SKU 91500 PAGE 11

9. Thread each of the four strands of thread along its respective color-coded ma­chine mechanism as shown in the previous illustration. (See Figure H.)

10. When finished threading the Sewing Machine, replace the Moveable Sewing
Table (13A). Then, close the Looper Cover (24A). (See Figure D.)

To Attach The Pedal Switch Assembly:

1. CAUTION! Before use, the Sewing Machine should be placed on a flat, stable
table surface, capable of supporting the weight of the machine, fabric, and any
additional pressure caused by working on it.

2. Insert the Pedal Switch Plug into the machine socket. Then set the Pedal Switch
Assembly (33F) on the floor under the table. (See Figure I.)

3. Plug the Power Wire (29F) into the nearest 120 volt, grounded, electrical
receptacle. (See Figure I.)

4.

NOTE: Press on the Pedal Switch Assembly (33F) strongly, and the sewing
speed increases. Press on the Pedal Switch Assembly lightly, and the sewing
speed decreases. (See Figure I.)

5. CAUTION! Always make sure no fabrics or other objects are left laying on top of
the Pedal Switch Assembly (33F). (See Figure I.)

(Right Side View)

POWER WIRE

(29F)

MACHINE

SOCKET

FOOT SWITCH

PLUG

FIGURE I

SKU 91500 PAGE 12

PEDAL SWITCH ASSY.

(33F)

OPERATING THE SEWING MACHINE

To Adjust The Thread Tension:

1. Adjust thread tension to suit the type of material and size of the thread used. The
Tension Dials (55A) on the Sewing Machine are a one-turn system. By turning
the Tension Dials up toward the + mark the thread tension becomes tighter. By
turning the Tension Dials down toward the - mark the thread tension becomes
looser. Thread tension can be adjusted independent of each other. For example,
the Left Looper thread can be adjusted to be tighter or looser than the Right
Looper thread. (See Figure G.)

To Change Threads:

1. To change threads, first cut each thread near the Thread Spool (not included).
Remove the old spool and replace with a new one. Tie the end of the new thread
to the end of the old one, using a small knot that will pass easily through the
machine. Raise the Presser Foot Spanner (9B). Turn the Tension Dials (55A)
down toward the - mark until the Dial stops and pull the thread out so that the tie
knot of the thread extends from the Presser Foot Assembly (1B). When inserting
the thread through the Needle (26B) eye, stop the tie knot before the Needle eye.
Then, cut the thread and pass it through the Needle eye. (See Figure G and

Figure J.)

PRESSER FOOT

SPANNER

(9B)

FIGURE J

SKU 91500 PAGE 13

PRESSER FOOT

ASSY.

(1B)

To Adjust The Stitch Length:

1. The stitch length is adjustable within the range from 1 to 5. For normal over
locking stitches set the Feed Adjusting Knob (21E) at 2 or 3. (See Figure K.)

FEED ADJUSTING KNOB

(21E)

FIGURE K

To Adjust The Feeding For Gathering Or Stretching:

1. To adjust feeding for gathering or stretching turn the Differential Feed Adjusting
Stud (93E) upward or downward. (See Figure L.)

(Sewing Machine With Cover Open)

DIFFERENTIAL FEED

ADJUSTING STUD

(93E)

FIGURE L

To Replace / Adjust The Upper Knif e:

1. CAUTION! Make sure the Power Switch (18F) is in its “OFF” position and the
Power Wire (29F) is unplugged from its electrical outlet before performing this
procedure. Use caution when handling or working around knives, loopers, or
other sharp parts. (See Figure D and Figure I.)

SKU 91500 PAGE 14

2. Turn the Hand Wheel (9F) until the Upper Knife (2D) is fully raised. Loosen the
Screw (1D) slightly. (See Figure D and Figure M.)

3. Open the Looper Cover. (See Figure D.)

4. To Remove The Upper Knife (2D):
a. Press the Upper Knife Bracket Rotating Shaft (5D) toward the right until it will

go no further. (See Figure M.)

b. Turn the Setting Ring (14D) in the direction of the arrow slightly. Stop press-

ing the Shaft and continue turning the Ring until the slot in the edge is ex­posed. (See Figure M.) Insert the wide end of the Key (3g) into the slot.

c. Remove the Screw (1D) and old Upper Knife (2D). Install the new or resharp-

ened Knife with the Screw (1D) near the middle of the slot in the Knife.
Tighten the Screw enough to hold the Knife while allowing it to slide.

(See Figure M.)

d. Turn the Setting Ring (14D) in the direction opposite the one shown in Figure

M. When the blade is lined up properly it should snap back to the left with

gentle pressure.

5. If the Knife is adjusted properly, when the Upper Knife is completely lowered the
edge of the Upper Knife (2D) should just barely overlap the entire edge of the
Lower Knife (28D). If necessary, carefully slide the Upper Knife until it is in the
correct position.

6. Retighten the Screw (1D) to fix the Upper Knife in place. (See Figure M.)

UPPER

KNIFE

BRACKET

(3D)

UPPER KNIFE BRACKET

ROTATING SHAFT

(5D)

SETTING RING

(14D)

UPPER KNIFE

FIGURE M

UPPER KNIFE BRACKET

(3D)

(2D)

SLOT

SCREW

(1D)

To Replace The Lower Knife:

1. CAUTION! Make sure the Power Switch (18F) is in its “OFF” position and the
Power Wire (29F) is unplugged from its electrical outlet before performing
this procedure. (See Figure D and Figure I.)

SKU 91500 PAGE 15

2. Set the Upper Knife (2D) in its non-operating position as described in steps 4-a
and 4-b under

To Replace / Adjust the Upper Knife

on page 15.

(See Figure M.)

3. Loosen the Screw (30D), and remove the Lower Knife Pressure Plate (29D) and
the old Lower Knife (28D).

4. Place a new Lower Knife (28D) in the groove of the Lower Knife Bracket (27D),
and align the cutting edge slightly below the top of the Needle Plate (1E). Re­place the Lower Knif e Pressure Plate (29D) and tighten the Screw (30D). Then,
return the Upper Knife (2D) to its original position. (See Figure D and Figure M.)

To Adjust The Pressure On The Pedal Switch Assembly:

1. The pressure setting on the Pedal Switch Assembly (33F) has been factory set
and should only be adjusted when sewing a special material. (See Figure I.)

2. Turn the Adjusting Screw (14B) clockwise to increase pressure for heavy-weight
materials such as denim, tweed, or hard linen. (See Figure D.)

3. Turn the Adjusting Screw (14B) counterclockwise to decrease pressure for light­weight materials such as georgette, lawn, or tricot.

(See Figure D.)

3 Thread And 4 Thread Overlock:

1. This is a two Needle/4 thread overlock Sewing Machine. One Needle/three
thread overlock can be done by means of using only the left or right Needle and
three threads. When using only one Needle, make sure to remove the other
Needle. (See Figure N and Figure O.)

RIGHT LOOPER THREAD (TOPSIDE)

LEFT NEEDLE THREAD

LEFT LOOPER THREAD

RIGHT NEEDLE THREAD

(UNDERSIDE)

FIGURE N

SKU 91500 PAGE 16 REV 12/04

FIGURE O

NO. OF THREAD

OVERLOCK WIDTH

NEEDLE USED

STITCH TYPE

3 THREAD

1/4” (5MM)

LEFT NEEDLE

3 THREAD

1/8” (3.5MM)

RIGHT NEEDLE

4 THREAD

1/4” (5.7MM)

LEFT & RIGHT NEEDLE

To Perform Roll Hemming:

1. This Sewing Machine can do right looper thread/wrapped rolled hem stitching
with a seam width of approximately 1/16”. When doing so, always remove the
left Needle.

2. Rolled hemming is done by rolling the fabric and overedging, and is not suited for
heavy or stiff fabrics.

3. CAUTION! Make sure the Power Switch (18F) is in its “OFF” position and the
Power Wire (29F) is unplugged from its electrical outlet before performing
this procedure. (See Figure D and Figure I.)

4. To perform roll hemming, set the Feed Adjusting Knob (21E) to “2” or “F”.

(See Figure D.)

5. Turn the Hand Wheel (9F) toward you until the Needle (26B) is at its highest
point. (See Figure D and Figure F.)

6. Lift the Presser Foot Assembly (1B). (See Figure J.)

7. Remove the Moveable Sewing Table (13A). (See Figure D.)

8. Unscrew the

two

Needle Plate Screws (5E, 6E) and remove the Needle Plate

(1E). (See Figure D and Figure P.)

SKU 91500 PAGE 17

9. Install a Hem Needle Plate Assembly (2E - not included), and replace the two
Needle Plate Screws (5E, 6E). (See Figure D and Figure P.)

10. Replace the Moveable Sewing Table (13A). (See Figure D.)

11. For rolled hemming, adjust the seam width to the position of “M” on the Hem
Needle Plate (3E). Then align the left edge of the Lower Knife Bracket (27D)
with the “M” mark on the Hem Needle Plate. (See Figure M.)

12. NOTE: Mak e sure the Lower Knife (28D) is not in contact with the edge of the
Hem Needle Plate (3E). When performing rolled-hem stitching, make sure to
adjust the thread tension correctly. At the start of sewing, slightly pull the end of
the chain off so it will not be entangled in the stitch.

(See Figure M and Figure P.)

NEEDLE PLATE

SCREW

(5E)

HEM NEEDLE PLATE

(3E)

NEEDLE PLATE

SCREW

(6E)

FIGURE P

To Perform Free Arm Sewing (Tubular Work):

1. This Sewing Machine can achieve tubular work by removing the Moveable Sew
ing Table (13A). This is especially convenient for finishing hard-to-reach areas
such as arm holes, overcasting trouser cuffs, etc. (See Figure D.)

To Perform Gathering:

1. A single layer of light weight fabric can be gathered to achieve sleeve heads,
lower edges, yokes, leca edging, or frills. To do so, set the Feed Adjusting Knob
(21E) at its maximum “5”. Set the Differential Feed Adjusting Stud (93E) from
“1.5” to “2”. (See Figure D.)

SKU 91500 PAGE 18

Thread And Needle Suggestions For Certain Cloth Types:

Cloth

Muslin,

Denim

Knit
Wool (w oven, knit)

Thread

Needle

Troubleshooting Guide:

Condition Reason Method of Adjustment

Fabric is not feeding. Insufficient Foot

Controller pressure.

Needle breaks. Needle not inserted properly.

Fabric being pulled too fast.
Loose Needle Set Screw.

Thread breaks. Incorrect threading.

Bent or damaged Needle.
Thread tension too tight.
Thread tangle d.
Needle inserted incorrectly.

Stitches skip. Bent Needle or Needle

point damage.
Needle set loosely.
Incorrect threading.
Wrong Needle used.
Insufficient Foot

Controller pressure.
Stitches are ir r egular. Thread tension not balanced. Adjust tensio n.
Fabric puckers. Thread tension too tight.

Threading incorrect or tangled.

Differential Feed Dial at

wrong ratio.
Machine does not ope rate. Power Cord Plug not connected. Connect Power Cord Plug to a

Increase pressure on
Foot Controller.
Insert Needle correctly or
replace with correct Needle.
Do not pull fabric by hand.
Use hand only to guide fabric.
Tighten Set Screw firmly.
Thread machine correctly.
Replace Needle.
Adjust tension.
Thread correctly.
Insert Needle correctly.
Replace Needle.

Set Needle firmly in position.
Thread machine correctly.
Use correct Needle.
Increase pressure on
Foot Controller.

Adjust tension.
Rethread machine.
Set value of Different ial Feed
Dial at 0.7-N.

120 volt, grounded, electrical
receptacle.

SKU 91500 PAGE 19

INSPECTION, MAINTENANCE, AND CLEANING

1. WARNING! Al ways disconnect the Sewing Machine from its electri-

cal power supply source before performing any inspection, mainte­nance, or c leaning pr ocedure.

2. Before each use, inspect the general condition of the Se wing Machine. Inspect the
Power Switch, Power Plug and Cord assembly, and extension cord (if used) for
damage. Check for loose screws, misalignment, binding of moving parts, broken,
cracked, or improper mounting of the Needles, broken parts and any other condi­tion that may aff ect its safe operation. If abnormal noise or vibration occurs, turn off
the Sewing Machine immediately and have the problem corrected before further
use. Do not use damaged equipment.

3. Always remove cut-off pieces and scraps of fabr ic from the Sewing Machine and
Foot Controller before starting the machine.

4. With a brush, soft cloth, or vacuum, remove all debris from the Sewing Machine.
Do not use solvents to wipe off the Sewing Machine, as damage may result. If
necessary, wipe with a damp cloth. You may use a mild detergent. Warning! Do

not introduce any liquids into the openings of the Sewing Machine.

5. Once clean, lubricate all moving parts with a light Sewing Machine oil (not included).

6. When storing, keep the Sewing Machine cov ered with a cloth co ver (not included).

7. To change the 120 volt Lamp (32F) in the Sewing Machine, pull out and remo v e the
left side section of the Lamp Cover (62A) to expose the Lamp.

CAUTION! Make sure the Lamp is completely cool before touching. Unscre w and
remove the old Lamp from its soc ket, and replace with a ne w 120 volt Lamp . Then,
replace the Lamp Cover. (See Figure D.)

8. Repairs should only be performed by a qualified sewing machine technician.

PLEASE READ THE FOLLOWING CAREFULLY

THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS

DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE
MANUFACTURER NOR DISTRIBUTOR MAKES ANY REPRESENTATION OR
W ARRANTY OF ANY KIND TO THE BUYER THA T HE OR SHE IS QU ALIFIED T O MAKE
ANY REPAIRS TO THE PR ODUCT OR THAT HE OR SHE IS QUALIFIED TO REPLACE
ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER AND/OR
DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS
REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED
TECHNICIANS AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK AND
LIABILITY ARISING OUT OF HIS OR HER REP AIRS T O THE ORIGINAL PR ODUCT OR
REPLACEMENT PARTS THERETO , OR ARISING OUT OF HIS OR HER INSTALLATION
OF REPLACEMENT PARTS THERETO.

SKU 91500 PAGE 20

PARTS LIST A

Some parts are listed and shown for illustration purposes only, and are not av ailab le individually

FRONT COVER / TENSION DIAL / BULB COVER

NOTE:

as replacement parts.

NOTE: When ordering parts from Parts List A and Assembly Diagram A

include the suffix “A” behind the part number (example: 1A - Thread Rack Bracket).

SKU 91500 PAGE 21

PARTS LIST A - CONT.

Some parts are listed and shown for illustration purposes only, and are not available individually

NOTE:

as replacement parts.

NOTE: When ordering parts from Parts List A and Assembly Diagram A

include the suffix “A” behind the part number (example: 1A - Thread Rack Bracket).

SKU 91500 PAGE 22

ASSEMBLY DIAGRAM A

Some parts are listed and shown for illustration purposes only, and are not available individually

NOTE:

as replacement parts.

SKU 91500 PAGE 23

TE: When ordering parts from Parts List A and Assembly Diagram A
NO

include the suffix “A” behind the part number (example: 1A - Thread Rack Bracket).

ASSEMBLY DIAGRAM A - CONT.

Some parts are listed and shown for illustration purposes only, and are not available individually

NOTE:

as replacement parts.

SKU 91500 PAGE 24

NOTE: When ordering parts from Parts List A and Assembly Diagram A

include the suffix “A” behind the part number (example: 1A - Thread Rack Bracket).

PARTS LIST B

Some parts are listed and shown for illustration purposes only, and are not available individually

SEWING TABLE / LOOPER COVER

NOTE:

as replacement parts.

NOTE: When order ing parts from Parts List B and Assembly Diagram B

include the suffix “B” behind the part number (example: 1B - Presser Foot Assembly).

SKU 91500 PAGE 25

ASSEMBLY DIAGRAM B

NOTE:

Some parts are listed and shown for illustration purposes only, and are not available individually

as replacement parts.

SKU 91500 PAGE 26

NOTE: When order ing parts from Parts List B and Assembly Diagram B

include the suffix “B” behind the part number (example: 1B - Presser Foot Assembly).

PARTS LIST C

NOTE: Some parts are listed and shown for illustration purposes onl y, and are not available individually as replacement parts.

SIDE COVER / BASE PLATE / ACCESSORY BOX

EXTENSION TABLE / MOTOR COVER / THREAD GUIDE BAR / SPOOL STAND

NOTE: When order ing parts from Parts List C and Assembly Diagram C

include the suffix “C” behind the part number (example: 1C - Left Looper Crank).

SKU 91500 PAGE 27

ASSEMBLY DIAGRAM C

Some parts are listed and shown for illustration purposes only, and are not av ailab le individually

NOTE:

as replacement parts.

SKU 91500 PAGE 28

NOTE: When ordering parts from Parts List C and Assembly Diagram C

include the suffix “C” behind the part number (example: 1C - Left Looper Crank).

PARTS LIST D

Some parts are listed and shown for illustration purposes only, and are not available individually

NOTE:

as replacement parts.

MACHINE FRAME / LOWER KNIFE / STITCH PLATE

NOTE: When ordering parts from Parts List D and Assembly Diagram D

include the suffix “D” behind the part number (example: 1D - Screw).

SKU 91500 PAGE 29

ASSEMBLY DIAGRAM D

Some parts are listed and shown for illustration purposes only, and are not availab le individuall y

NOTE:

as replacement parts.

SKU 91500 PAGE 30

include the suffix “D” behind the part number (example: 1D - Screw).

NOTE: When ordering parts from Parts List D and Assembly Diagram D

PARTS LIST E

Some parts are listed and shown for illustration purposes only, and are not av ailab le individually

MAIN SHAFT / UPPER KNIFE

NOTE:

as replacement parts.

SKU 91500 PAGE 31

(example: 1E - Needle Plate).

include the suffix “E” behind the part number

NOTE: When ordering parts from Parts List E and Assembly Diagram E

PARTS LIST E - CONT.

Some parts are listed and shown for illustration purposes only, and are not av ailab le individually

NOTE:

as replacement parts.

NOTE: When ordering parts from Parts List E and Assembly Diagram E

include the suffix “E” behind the part number

(example: 1E - Needle Plate).

SKU 91500 PAGE 32

ASSEMBLY DIAGRAM E

Some parts are listed and shown for illustration purposes only, and are not av ailab le individually

NOTE:

as replacement parts.

SKU 91500 PAGE 33

(example: 1E - Needle Plate).

include the suffix “E” behind the part number

NOTE: When ordering parts from Parts List E and Assembly Diagram E

ASSEMBLY DIAGRAM E - CONT.

Some parts are listed and shown for illustration purposes only, and are not av ailab le individually

NOTE:

as replacement parts.

SKU 91500 PAGE 34

(example: 1E - Needle Plate).

include the suffix “E” behind the part number

NOTE: When ordering parts from Parts List E and Assembly Diagram E

ASSEMBLY DIAGRAM E - CONT.

Some parts are listed and shown for illustration purposes only, and are not availab le individually

NOTE:

as replacement parts.

SKU 91500 PAGE 35

(example: 1E - Needle Plate).

include the suffix “E” behind the part number

NOTE: When ordering parts from Parts List E and Assembly Diagram E

PARTS LIST F

Some parts are listed and shown for illustration purposes only, and are not av ailab le individually

NOTE:

as replacement parts.

HAND WHEEL / STITCH LENGTH DIAL

NOTE: When ordering parts from Parts List F and Assembly Diagram F

include the suffix “F” behind the part number

(example: 1F - Main Shaft Left Bushing).

SKU 91500 PAGE 36

ASSEMBLY DIAGRAM F

Some parts are listed and shown for illustration purposes only , and are not available individually

NOTE:

as replacement parts.

SKU 91500 PAGE 37

NOTE: When ordering parts from Parts List F and Assembly Diagram F

(example: 1F - Main Shaft Left Bushing).

include the suffix “F” behind the part number

PARTS LIST / ASSEMBLY DIAGRAM G

Some parts are listed and shown for illustration purposes only , and are not available individually

NOTE:

as replacement parts.

NEEDLE BAR / PRESSER BAR / PRESSER FOOT

SKU 91500 PAGE 38

NOTE: When ordering parts from Parts List G and Assembly Diagram G

include the suffix “G” behind the part number (example: 1G - Bending Tweezers).