National 155 User manual

9250 XYLON AVENUE • MINNEAPOLIS, MN 55445 • U.S.A.
800-245-0267 • 763-315-5300 • FAX [phone] • FAX [phone]
WEB SITE: www.nationalequipment.com • E-MAIL: [email protected]
National
Flooring Equipment, Inc.
#155 DOUBLE PULL
BINDING BRUTE
INSTRUCTION MANUAL
Read Manual Before Operating Machine

Page 2
TABLE OF CONTENTS
Table of Contents ........................................................................................................2
Rules for Safe Operation..........................................................................................3-6
A. Grounding ............................................................................................................5
B. Extension Cords ..................................................................................................6
Introduction ................................................................................................................7
Threading Instructions............................................................................................8-10
Thread Tension ....................................................................................................11-12
Stitching ....................................................................................................................13
Folders ................................................................................................................14-15
Maintenance ..............................................................................................................16
A. Lubrication..........................................................................................................16
B. Shuttle Area ......................................................................................................16
C. Entire Machine ..................................................................................................16
D. Operation Tips....................................................................................................16
Adjustments..........................................................................................................17-20
A. Check Needle Height ........................................................................................17
B. Adjust Needle ....................................................................................................18
C. Needle To Hook Clearance ................................................................................19
D. Race Cover Spring Clearance ..........................................................................20
Troubleshooting ........................................................................................................21
Binding Tips ..............................................................................................................22
Folder Adjustment ....................................................................................................23
Binding and Stitching Instructions ........................................................................24-28
Complete Parts List ..............................................................................................29-32
Part Numbers and Diagrams................................................................................33-41
Binding Accessories ............................................................................................42-43
Guarantee..................................................................................................................44
Return Sheet ............................................................................................................45

Page 3
RULES FOR SAFE OPERATION
READ AND SAVE ALL INSTRUCTIONS FOR FUTURE USE. Before use, be sure everyone operating
this equipment reads and understands this manual as well as any labels packaged with or attached to
the tool.
1. KNOW YOUR EQUIPMENT: Read this manual carefully to learn equipment applications and
limitations as well as potential hazards associated with this type of equipment.
2. GROUND YOUR TOOL: Unless your tool is double insulated, it should be grounded. See Grounding.
3. AVOID DANGEROUS ENVIRONMENTS: Do not use in rain, damp or wet locations, or in the
presence of explosive atmospheres (gaseous fumes, dust or flammable materials). Remove materials
or debris that may be ignited by sparks.
4. KEEP WORK AREA CLEAN AND WELL LIT: Cluttered, dark work areas invite accidents.
5. DRESS PROPERLY: Do not wear loose clothing. These may be caught in moving parts. When
working outdoors, wear rubber gloves and insulated non-skid footwear. Keep hands and gloves away
from moving parts.
6. USE SAFETY EQUIPMENT: Everyone in the work area should wear safety goggles or glasses
complying with current safety standards. Wear hearing protection during extended use and a dust
mask for dusty operations. Hard hats, face shields, safety shoes, etc. should be worn when specified
or necessary.
7. KEEP BYSTANDERS AWAY: Children and bystanders should be kept at a safe distance from the
work area to avoid distracting the operator and contacting the tool or extension cord. Operator should
be aware of who is around them and their proximity.
8. PROTECT OTHERS IN THE WORK AREA: Provide barriers or shields as needed to protect others
from debris.
9. USE PROPER ACCESSORIES: Using accessories that are not recommended may be hazardous.
Be sure accessories are properly installed and maintained. Do not delete a guard or other safety
device when installing an accessory or attachment.
10. CHECK FOR DAMAGED PARTS: Inspect guards and other parts before use. Check for
misalignment, binding of moving parts, improper mounting, broken parts and any other conditions that
may affect operation. If abnormal noise or vibration occurs, turn the tool off immediately and have the
problem corrected before further use. Do not use damaged equipment. Tag damaged tools “DO NOT
USE” until repaired. A guard or other damaged parts should be properly repaired or replaced. For all
repairs, insist on only identical National replacement parts.
11. REMOVE ALL AD USTING KEYS AND WRENCHES: Make a habit of checking that the adjusting
keys, wrenches, etc. are removed from the tool before turning it on.
12. GUARD AGAINST ELECTRIC SHOCK: Prevent body contact with grounded surfaces such as pipes,
radiators, ranges and refrigerators.
13. AVOID ACCIDENTAL STARTING: Be sure equipment is turned off before plugging it in. Do not use
a tool if the power switch does not turn the tool on and off.
14. DO NOT FORCE EQUIPMENT: Equipment will perform best at the rate for which it was designed.
Excessive force only causes operator fatigue, increased wear and reduced control.
15. KEEP HANDS AWAY FROM ALL MOVING PARTS.

Page 4
RULES FOR SAFE OPERATION
16. DO NOT ABUSE CORD: Never unplug by yanking the cord from the outlet. Pull plug rather than cord
to reduce the risk of damage. Keep the cord away from heat, oil, sharp objects, cutting edges and
moving parts.
17. STAY ALERT: Watch what you are doing, and use common sense. Do not use when you are tired,
distracted or under the influence of drugs, alcohol or any medication causing decreased control.
18. STARTING MACHINE: On/off switch must be in off position before connecting to power source.
19. UNPLUG EQUIPMENT: When it is not in use, unplug tool before changing accessories or performing
recommended maintenance.
20. STORE IDLE EQUIPMENT: When not in use, store in a dry, secured place. Keep away
from children.
21. MAINTAIN LABELS AND NAMEPLATES: These carry important information. If unreadable or
missing, contact National for a free replacement.
22. MACHINE IS HEAVY, DO NOT DROP.

Page 5
RULES FOR SAFE OPERATION
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 plug provided with the tool. Never remove the grounding prong from the plug. Do not
use the tool if the cord or plug is damaged. If the plug will not fit the outlet, have a proper outlet
installed by a qualified electrician.
GROUNDED TOOLS: TOOLS WITH THREE PRONG PLUGS
Tools marked “Grounding Required” have a three wire cord and three prong grounding plug. The plug
must be connected to a properly grounded outlet. See Figure A. If the tool should electrically malfunction
or break down, grounding provides a low resistance path to carry electricity away from the user, reducing
the risk of electric shock.
The grounding prong in the plug is connected through the green wire inside the cord to the grounding
system in the tool. The green wire in the cord must be the only wire connected to the tool's grounding
system and must never be attached to an electrically “live” terminal.
Your tool must be plugged into an appropriate outlet, properly installed and grounded in accordance with
all codes and ordinances. The plug and outlet should look like those in Figure A.
Figure B illustrates a temporary adapter available for connecting grounded plugs (Figure A) to two prong
outlets. The green rigid ear or lug extending from the adapter must be connected to a permanent ground
such as a properly grounded outlet box or receptacle. Simply remove the center screw from the outlet,
insert the adapter and reattach the screw through the green grounding ear to the outlet. If in doubt of
proper grounding, call a qualified electrician. A temporary adapter should only be used until a properly
grounded outlet can be installed by a qualified electrician. The Canadian Electrical Code prohibits the use
of temporary adapters.
Figure A
2
1
3
GROUNDING
1. Cover of grounded outlet box
2. Outlet ground
3. Grounding prong
4. Temporary adapter
5. Screw
6. Green grounding ear
Figure B
6
5
4
WARNING: Electrical cords can be hazardous. Misuse can result in fire or death by electrical
shock. Read carefully and follow all directions.

Page 6
RULES FOR SAFE OPERATION
EXTENSION CORDS
Grounded tools require a three wire extension cord. Double insulated tools can use either a two or three
wire extension cord. 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.
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. When using more than one extension cord to make
up the total length, be sure each cord contains at least the minimum wire size required. If you are using
one extension cord for more than one tool, add the nameplate amperes and use the sum to determine the
required minimum wire size.
GUIDELINES FOR USING EXTENSION CORDS
• If you are using an extension cord outdoors, make sure it is marked with the suffix “W-A” (“W” in
Canada) to indicate that it is acceptable for outdoor use.
• Be 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 person before using it.
• Protect your extension cords from sharp objects, excessive heat and damp or wet areas.
• Keep away from water. Do not use if wet.
• Inspect thoroughly before each use. DO NOT USE IF DAMAGED.
• Make sure equipment is OFF before connecting cord outlet.
• FULLY INSERT plug into outlet.
• Do not remove, bend or modify any metal prongs or pins of cord.
• Do not use excessive force to make connections.
• Do not connect a three prong plug to a two-hole cord.
• Avoid overheating. Uncoil cord and do not cover it with any material.
• Do not walk on cord.
• Do not drive, drag or place objects over cord.
READ AND SAVE ALL INSTRUCTIONS FOR FUTURE REFERENCE.
WARNING:Electrical cords can be hazardous. Misuse can result in fire or death by electrical
shock. Read carefully and follow all directions.

Page 7
As with our many other products offered to the carpeting industry we stand ready to warrant and assist
you in any way possible. Should it be necessary for you to require service or assistance, please contact
our sales or service representative at 800-245-0267.
With the maintenance portion of the Video tape and this manual, it is our objective to provide you with
both pictorial and written information necessary to assist you in proper servicing and maintenance of your
Binding Brute.
Each new Binder is furnished with the following items:
• Binding Tape Discs (2)
• Instruction DVD
• Instruction Manual
• Lubricant
• Binding Reel Centering Plug
• Accessory Kit containing:
•Prewound Bobbins (8) • 5/32 Allen Wrench
• Needles (1 -Ten Pack) • 3/32 Allen Wrench
• Tweezers • Binding Tape (1 Roll)
• 5/64 Allen Wrench • Serging Tape Sample
• Large Screwdriver (2) • Small Screwdriver (2)
• Thread Clippers
NOTE: It is highly recommended you retain the box and packing your Binder was supplied in for storage,
transporting or if necessary, to return the Binder for service. Replacement Shipping Cartons can
be purchased.
For equipment to be returned, please fill out and include the return sheet found at the back of this
instruction manual.
INTRODUCTION
CAUTION: For your safety, always disconnect the power source to the Binder before
attempting to service or adjust the machine.

1. Raise needle to highest point.
2. Raise the feed roller.
3. Thread by following the letters indicated in the illustration (See Figure 1).
A. Upper Thread Guide
B. Enter Tension Discs
C. Exit Tension Discs
D. Take up Spring
E. Take up Lever
F. Lower Thread Guides
G. Needle Block
H. Needle (See Figure 2).
NOTE: Assure thread is bottomed in the tension disc (B & C). This is extremely important.
Page 8
THREADING INSTRUCTIONS
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Figure 1 Figure 2

1. Removal of Bobbin Case
a. Raise feed roller.
b. Rotate handwheel toward you until needle reaches its highest point.
c. Tilt machine to rest on handwheel end. If you have binding wheels installed, use a small block
box to support machine on handwheel.
d. Remove lower feed roller plate.
e. Lift and grasp bobbin case latch (as illustrated).
f. Remove case by pulling towards you.
2. Threading of Bobbin Case
a. With bobbin and bobbin case being held as illustrated, and with approximately 5 to 6 inches of
thread for feeding, insert bobbin into case (See Figure 2).
b. Pull thread through slot in the bobbin case. (See Figure 3).
c. Continue by pulling thread under tension spring and up through slot in spring. (See Figure 4).
Refer to Step 7c to check for proper thread feed tension. (See Page 11, paragraph 3).
3. Installation of Bobbin Case
a. Lift and grasp bobbin case latch and with the case horn aligned with the notch in the shuttle race
cover, slide the bobbin case fully onto the center post (See Figure 1). During this operation, it is helpful
to also hold the thread with the bobbin case to prevent the bobbin from dropping out of the case.
b. Trim the bobbin thread to approximately 2 inches.
Page 9
THREADING INSTRUCTIONS
Figure 1
Figure 2
Figure 3 Figure 4
CAUTION:Assure the bobbin case latch is fully closed after installation.

4. Needle Replacement
a. To remove, rotate the handwheel towards you until it reaches its highest point. Using a 5/64 allen
wrench, (provided in the kit), loosen the set screw above the needle and remove needle.
b. To replace, grasp the needle with tweezers, and as viewed from the feed side of the machine,
position needle with the long groove facing left and the notch side facing right. Feed the point into
the lower guide, and then the other end up into the clamp. Assure needle is bottomed in clamp
before tightening set screw. DO NOT OVER TIGHTEN.
Page 10
THREADING INSTRUCTIONS
CAUTION: Replacement needles MUST be of the correct type and installed correctly for proper
machine operation.
Proper needle type for your machine will be indicated by packet of needles enclosed in kit.
The majority of binders are equipped with a “Schmetz No. 22” needle. As an option, the “Schmetz No.
23'' needle can be supplied or substituted. The principle difference is, the No. 23 is slightly larger in
diameter, therefore stiffer and tends to deflect less. Needle to hook spacing may change and the
adjustment should be checked per the adjustment instruction sheet. The diameter increase will result
in a larger penetration hole in the fabric.

1. Proper thread tensions are important to obtain the optimum stitch appearance, proper knot
location and tensions within the fabrics being sewn.
*Indications of proper and improper thread tensions.
When the upper and lower thread tensions are correct, the threads are knotted in the fabric center as
in this illustration.
With excessive tension on the upper thread, the result will be looping on the top of the fabric as in this
illustration.
With excessive tension of the lower thread, the result will be looping on the bottom of the fabric as in
this illustration.
2. Upper thread adjustments.
Rotation of the Tension control clockwise will INCREASE THREAD TENSION. Conversely,
COUNTER CLOCK WISE will decrease thread tension.
NOTE: Make small adjustments (single number movements) until desired results are achieved. It is also
appropriate at this point to note that whenever you re-thread the machine, to make sure the thread is
properly seated between the tension discs. Lack of upper tension can result in looping of upper thread on
bottom of carpet.
3. Lower thread adjustments.
Remove bobbin case. Check that the bobbin spool is properly threaded in the case. To test tension,
hold the thread end and allow the bobbin case to hang freely. Give the thread a slight tug upward. If
the tension is correct, the weight of the case will cause approximately 1" of thread to feed out.
To increase tension, turn the small slot screw on the case clockwise. Conversely, counter clock wise
will decrease.
NOTE: Rotate the adjusting screw no more than 1/8" to 1/4" turn at a single time, until desired result are
achieved. Recheck spool threading after each test and before reinstalling case in machine. Over time,
thread dust will accumulate between the spring and case and can cause erratic tensions. To correct,
remove screw and spring and clean.
Page 11
THREAD TENSION

1. Installation and Threading of Binding Tape:
Included with your machine are:
• Large Black Plastic Discs (2)
• Tape Reel Centering Plug
• Binding Tape (1 Roll)
Mount the tape reel:
• Place the inner disc on spindle with smooth side to face tape reel.
• Slide the plug onto spindle.
• Place tape reel on centering plug in a manner that tape will feed off reel in a CLOCKWISE direction.
• Slide remaining disc onto spindle. Allow space for free tape feed.
• Lightly tighten thumb screw.
REMEMBERTape reel MUST roll freely between discs.
Threading Tape:
• Trim tape end to provide a long sharp point.
• Start tape end into folder inlet (do not thread through tension spring at this time).
• Using a tweezer, point in the folder slot, push the tape until you can grasp tape end at
folder exit.
• Pull several inches of tape through folder and out under the needle, (as it would appear
while stitching).
• Tape as being fed from reel to folder, can now be through the tape guide closest to the folder
(one guide is recommended).
2. Preparation for Stitching:
• Set the Zig-zag-straight stitch selector to Zig-zag.
• Grasp the upper thread and tape end in your left hand, and with a slight pulling pressure away
from you, and in a straight line, run machine in short bursts until stitching occurs in binding tape.
3. Stitching:
• Raise feed roller.
• Rotate hand wheel towards you until needle is at highest point.
• Insert material edge into folder groove and up to needle foot.
• Drop feed roller.
• Begin sewing. (It may be necessary to push material slightly at this point to engage it under
feed roller.
Page 12
THREAD TENSION

While sewing, NEVER pull on carpet or machine. This can cause needle deflection which can result in
needle breakage and/or damage to the bobbin/shuttle mechanism.
TO CHANGE DIRECTION OF STITCHING:
• Stop sewing and if necessary, rotate hand wheel towards you until needle is in carpet.
• Raise feed roller.
• Alter direction of material (or machine).
• Lower feed roller and resume sewing.
TO REMOVE CARPET:
• Raise feed roller.
• Rotate hand wheel toward you until needle is at highest point.
• Pull carpet out to your left (or move machine to the right).
• Cut thread and binding.
REGULATION WIDTH OF ZIG-ZAG STITCH:
The width of zig-zag stitch is regulated by the stitch pattern control knob or lever. For instance, to “0” is
straight stitch, and to “5” is max zig-zag stitch.
Turn the hand wheel toward you slowly with your right hand until needle enters needle plate and returns
to highest point. Avoid making these changes with the needle below the needle plate or
in carpeting.
IMPORTANT:
Certain carpet types, weights and those with a heavy or rubberized backing, may prove difficult to bind in
the full zig-zag mode.
If this occurs, using a scrap piece, test in the full straight stitch mode. Then gradually select up to a zig-
zag pattern allowable. This is the recommended procedure for Berbers.
*It should be noted that carpet types such as Berber or those with a stiff or heavy backing may require a
sewing softener application prior to binding. Also, use of a #23 needle is recommended for Berbers.
Also, a good gauge for carpet height capability is one that will easily pass through the folder throat. Above
that, beveling is necessary. A rule of thumb is, weights above 40 oz. should be beveled for best results.
Use the #126T Lubricator when sewing Unitary/Unibond type carpet.
Page 13
STITCHING

The standard folder shipped with the machine is a 7/8" raw edge. This folder is designed to be used with
polyester binding.
For cotton binding, NATIONAL can supply a 3/4" folder model. It is recommended that you supply
NATIONAL with a sample roll of the cotton binding for testing, and to specify the carpet type you intend to
bind.
Other folder types available are as follows:
Page 14
FOLDERS
Approximately 1/8" from
edge of tape
Right stitch
off edge of tape
ZIG-ZAG STRAIGHT
3/4", 7/8", 1¼", 2", 2¼", 3", etc.
1-1/4" Clean Top
(Tucks top edge under)
1-1/4" Clean Top and Bottom
(Tucks top and bottom edges under)
The folder supplied with the machine has been tested at both stitch extremes.
(Full straight and Full zig-zag).
AS SEEN FROM THE BOTTOM OF THE CARPET CORRECT STITCHING SHOULD APPEAR LIKE
THIS 7/8" BINDING TAPE EXAMPLE:

As shipped, the folder is positioned to correctly bind in the full zig-zag mode. Straight stitching will require
moving the folder to the left. Adjustment instructions per Figure 2 follows.
1. The slot in the folder bracket allows it to be moved left or right when changing between zig zag and
straight on the stitch control.
2. Caution: Keep the presser foot needle block assembly from hitting the folder by allowing
approximately 1/8'' space between them.
3. When correctly adjusted the folder positions can be marked on a piece of masking tape applied at the
front edge of the folder.
4. Use of the guide bar is optional. If used it should be far enough to the right so it doesn’t block the
folder opening.
5. Threading the binding tape through only one of the tape guides (the one closest to the opening) is
recommended.
6. If stitch misses the tape on the bottom see page 23.
Page 15
FOLDERS
FO
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1
/8"
GUIDE BAR
AD
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TRAI
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Figure 2Figure 1

LUBRICATION
Thorough and regular lubrication of your machine is essential to proper operation and long service.
SHUTTLE AREA LUBRICATION
Inspect and, if necessary, clean each time you change bobbins or after a maximum of one hour of
continuous running. Lubricate after cleaning with the type of lubricant supplied with machine.
Remove lower feed roller plate, bobbin case, hook retainer and hook.
Thoroughly clean the race cover, hook and hook inner race (an old needle works well to remove grime
from inner race corners).
Apply a light film of lubricant on the hook, inside of race cover and inner race.
ENTIRE MACHINE LUBRICATION
Follow this procedure after approximately eight (8) hours running time.
Remove the top cover. Slowly rotate the handwheel towards you and observe where rotation occurs.
Apply the oil at these points, the oil port for the main shaft bearing, oil ports on the crank journals beneath
the stitch selector mechanism, and all the pivot and sliding areas associated with the stitch selector.
Repeat this procedure in the needle bar area (behind the front cover) and the lower area (after removing
the pan). NEVER lubricate the tension control. This is also a good time to check and re-tighten all screws.
OPERATION TIPS
• Always check the needle condition and the amount of bobbin remaining before starting a job.
• It is good practice to run a short strip of scrap whenever changing carpet types to check for stitch
placement and binding fold.
• Never pull on machine or carpet during operation. The feed roller and needle stroke is timed to prevent
carpet movement while needle is in carpet. When binding corners with feed roller up, use care in
feeding carpet.
• Always use a softener when binding Berbers. It is good practice to use no more than 1/2 of the
zig zag range and to install a #23 needle.
• Always use a lubricant when binding unibond/unitary backed carpet. The thread and needle will pick up
the plastic from the backing, transfer it to the shuttle parts, and cause thread tangling and breakage.
• If you hear the needle hitting, stop and inspect the shuttle area parts and needle the first opportunity
you have.
Page 16
MAINTENANCE

AD USTMENTS
Page 17
TO CHECK NEEDLE HEIGHT AD USTMENT
Note: All screw locations marked in red are permanent and should not be adjusted.
This adjustment should be checked if machine skips stitches, after machine jams,
or a needle has broken.
Install new needle incorrectly with the scarf to the outside (left) rather than inside
(right), (See Figure 1).
1. Remove shuttle access plate.
2. Remove bobbin case.
3. Remove race cover.
4. Leave hook in shuttle.
5. Reverse needle 180° so scarf faces out (See Figure 2). Tilt machine so that it is
at an angle so you can see the shuttle area. as you turn the handwheel
counterclockwise, the hook will travel clockwise; reverse rotation and travel
counterclockwise to a position where the point of the hook is approximately 1/8"
behind the needle and reverse the rotation again. When the point of the hook is
just in line with the back side of the needle, the point of the hook should be in the
center of the scarf (approximately 1/8" above the center of the eye of the needle).
NOTE: (For adjustments see page 23). Make sure hook is always in full contact with
the bottom most part of driver. When completed, install the needle properly with the
scarf to the right.
H
OOK
1
/8"
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Figure 3

Page 18
AD USTMENTS
TO AD UST NEEDLE
1. Loosen set screw located in needle bar drive collar
(part# 126-164, See Figure 1).
2. Slide needle bar (part #126-172) slightly up or down.
3. Tighten set screw in drive collar.
4. Recheck adjustment using procedure on Page 17.
Access Hole Interior ViewAccess Hole Exterior View
3/32 Allen Set Screw
Located in Drive
Collar Shaft
Figure 1
Figure 2 Figure 3

NOTE: Needle to hook clearance and race cover spring clearance
seldom change or need adjustment.
Needle bar height may change due to jamming the machine or
breaking a needle and should be checked if stitches are skipped or
thread breaks.
NEEDLE TO HOOK CLEARANCE
1. Remove: Lower feed roller plate (Model 126) or shuttle access
plate (Model 155), pan, bobbin, and race cover.
2. Clean the shuttle area, hook and race cover prior to adjusting.
TO CHECK:
Install new needle backwards with the scarf to the outside (left)
rather than inside (right) (See Figure 4).
Hold machine at an angle so that the hook stays in place and the
shuttle area is visible. Turn handwheel counter-clockwise until the
point of the hook passes behind the needle. Stop when the point is
approximately 1/8" past the needle (See Figure 1). The hook should
just touch, but not deflect the needle (See Figure 2). This setting
should be made in the zig zag position and the needle checked so it
does not deflect on either the inside or outside stitch.
If adjustment is necessary, loosen Screw ‘A,’ (part# 126-137) on
shuttle drive clamp (part#126-139) and move shuttle body left or right
as necessary (See Figure 3). Tighten screw ‘A’ slightly. Because
loosening Screw ‘A’ also allows the shuttle assembly to rotate, the
race cover spring clearance should also be checked. (Next step
page 20)
Page 19
AD USTMENTS
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Figure 2
Figure 1
Figure 4Figure 3

RACE COVER SPRING CLEARANCE AD USTMENT
Remove the hook and install the race cover part# 126-140B.
Handwheel the machine. The needle should be centered in the race cover ellipse (notch). Fig. 1. If not
centered, loosen Screw ‘A’ and rotate shuttle.
Proper adjustment will result in the needle passing through the race cover spring as shown in Fig. 2.
Tighten Screw ‘A,’ but do not over-tighten and cause the shaft to bind up. Install hook. Recheck needle to
hook clearance.
IMPORTANT: When adjustments are completed install the needle properly. Scarf (flat side) on right hand
side. Symptoms of a problem with this adjustment are dents on the race cover spring caused by the
needle hitting it.
Page 20
AD USTMENTS
R
O
TAT
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Figure 1 Figure 2
Needle
Race Cover Spring Clearance
BOBBIN CASE
This machine uses bobbin case with an eyelet: Part #126-112-1.
Thread must pass through eyelet in bobbin case for proper operation.
Tension on the bobbin thread should be light.
You have a #23 needle in machine, when ordering needle ask for size
#23, Part #126-B.