# Textiles - Juki Walking Foot


Juki Walking Foot DNU 1541s

Clearance: Required

# Manual(s)

*Manuals and other reference materials from the manufacturer or other sources.*

- [Juki Walking Foot DNU 1541s Instruction Manual](https://drive.google.com/file/d/116O_0pvLrTCr9say9q8DxgVoa7hr-6hc "https://drive.google.com/file/d/116O_0pvLrTCr9say9q8DxgVoa7hr-6hc")

# Member Notes



# Resources

*Where to obtain materials, consumables, and tooling.*

### CONSUMABLES

Appropriate needles and bobbins are available in the consumables section of our store front. Both are sold individually for ease and convenience.

Members are responsible for bringing their own thread and fabric.

<div class="section_highlight_wrapper" id="bkmrk-bobbins%3A%C2%A0size-%E2%80%9Cm%E2%80%9D%2C-s"><div class="level3">- <div class="li">**Bobbins:** Size “M”, standardized metal bobbin  
    </div>

- <div class="li">**Thread**</div>
- <div class="li">Must be in a Cone or Vicone to accommodate high speed</div>
- <div class="li">Always use the same thread in the upper tension and in the bobbin</div>

- <div class="li">**Fabric:** light to heavy weight fabrics</div>

- <div class="li">**Needle** (see chart below):</div>
- <div class="li">Size Range for machine:[ 135 x 17, 135 x 16 (Nm160) Nm125～Nm180](https://www.thethreadexchange.com/miva/merchant.mvc?Screen%3DCTGY%26Category_Code%3DNDL-135x17&sa=D&source=editors&ust=1676742692798267&usg=AOvVaw2h9NabKWNK9g7TEJHMT8nL "https://www.thethreadexchange.com/miva/merchant.mvc?Screen%3DCTGY%26Category_Code%3DNDL-135x17&sa=D&source=editors&ust=1676742692798267&usg=AOvVaw2h9NabKWNK9g7TEJHMT8nL")</div>
- <div class="li">Point Type: [appropriate to fabric](https://sewtootpatterns.com/wp-content/uploads/2016/02/Needle_Types.jpg&sa=D&source=editors&ust=1676742692798833&usg=AOvVaw3uYTKRPSH2paSVMPig6odA "https://sewtootpatterns.com/wp-content/uploads/2016/02/Needle_Types.jpg&sa=D&source=editors&ust=1676742692798833&usg=AOvVaw3uYTKRPSH2paSVMPig6odA")</div>
- <div class="li">Weight: [appropriate to the thread and fabric](https://sewtootpatterns.com/wp-content/uploads/2016/02/Needle_Types.jpg&sa=D&source=editors&ust=1676742692799244&usg=AOvVaw1m31zIAXEdhw-FuzRt2NGo "https://sewtootpatterns.com/wp-content/uploads/2016/02/Needle_Types.jpg&sa=D&source=editors&ust=1676742692799244&usg=AOvVaw1m31zIAXEdhw-FuzRt2NGo")</div>
- <div class="li">Eye: must be 40% larger than the thickness of the thread</div>

<div class="table sectionedit11"><table class="inline"><thead><tr class="row0"><th class="col0">**Needle Type**  
(shape of the point)</th><th class="col1">**Needle Size**  
(Fine to heavy)</th><th class="col2">**Fabric Type**</th><th class="col3">**Thread Size**  
(Measured in Tex, Denier, mm and weight)</th></tr></thead><tbody><tr class="row1"><td class="col0 leftalign">Universal R or DP</td><td class="col1 leftalign">70 up to 230</td><td class="col2 leftalign">Light to heavy woven</td><td class="col3 leftalign">Light to medium</td></tr><tr class="row2"><td class="col0 leftalign">Ballpoint RG, FFG, G</td><td class="col1 leftalign">100 to 125</td><td class="col2">Light to medium knits, jerseys, stretch, bulky knit</td><td class="col3 leftalign">Light to medium</td></tr><tr class="row3"><td class="col0 leftalign">Jeans R</td><td class="col1 leftalign">100 - 110</td><td class="col2 leftalign">Medium to Heavy</td><td class="col3 leftalign">Medium to Heavy</td></tr><tr class="row4"><td class="col0 leftalign">Leather/Vinyl LR, LL, P, PCL, S, D, GH</td><td class="col1 leftalign">Range of sizes</td><td class="col2 leftalign">Heavy/Layers</td><td class="col3 leftalign">Heavy</td></tr></tbody></table>

</div></div></div>
### Vendors

- [Wawak](https://www.google.com/url?q=https://www.wawak.com/&sa=D&source=editors&ust=1676742692848846&usg=AOvVaw1LHOQ1_qvqOQWkxmEZ4Lmi "https://www.google.com/url?q=https://www.wawak.com/&sa=D&source=editors&ust=1676742692848846&usg=AOvVaw1LHOQ1_qvqOQWkxmEZ4Lmi") —Place to buy Needles and thread of every type, including heavy duty and embroidery
- [The Thread Exchange](https://www.google.com/url?q=https://www.thethreadexchange.com/miva/merchant.mvc?Screen%3DCTGY%26Category_Code%3DNDL-135x17&sa=D&source=editors&ust=1676742692849299&usg=AOvVaw318_uto__4KL8yrHzNGHJh "https://www.google.com/url?q=https://www.thethreadexchange.com/miva/merchant.mvc?Screen%3DCTGY%26Category_Code%3DNDL-135x17&sa=D&source=editors&ust=1676742692849299&usg=AOvVaw318_uto__4KL8yrHzNGHJh") - thread and needles 
    - [Needle buying Guide](https://www.google.com/url?q=https://www.thethreadexchange.com/miva/merchant.mvc?Store_Code%3DTTE%26Screen%3DCTGY%26Category_Code%3Dneedle-information&sa=D&source=editors&ust=1676742692849775&usg=AOvVaw301qf5RFQo8u_F4D4Qd0xu "https://www.google.com/url?q=https://www.thethreadexchange.com/miva/merchant.mvc?Store_Code%3DTTE%26Screen%3DCTGY%26Category_Code%3Dneedle-information&sa=D&source=editors&ust=1676742692849775&usg=AOvVaw301qf5RFQo8u_F4D4Qd0xu")
    - [Needle and thread Guide](https://www.google.com/url?q=https://www.servicethread.com/blog/industrial-sewing-thread-needle-sizes&sa=D&source=editors&ust=1676742692850221&usg=AOvVaw1ahsolS41MnVxymXKvd0yK "https://www.google.com/url?q=https://www.servicethread.com/blog/industrial-sewing-thread-needle-sizes&sa=D&source=editors&ust=1676742692850221&usg=AOvVaw1ahsolS41MnVxymXKvd0yK")
    - [Bobbin Guide](https://www.google.com/url?q=https://www.thethreadexchange.com/miva/merchant.mvc?Screen%3DCTGY%26Store_Code%3DTTE%26Category_Code%3Dprewound-bobbin-information&sa=D&source=editors&ust=1676742692850649&usg=AOvVaw1lx7CtWQEpxy1smnU_oPNj "https://www.google.com/url?q=https://www.thethreadexchange.com/miva/merchant.mvc?Screen%3DCTGY%26Store_Code%3DTTE%26Category_Code%3Dprewound-bobbin-information&sa=D&source=editors&ust=1676742692850649&usg=AOvVaw1lx7CtWQEpxy1smnU_oPNj")
- [Bobbins: pack of 20 for $12 on Amazon](https://www.google.com/url?q=https://www.amazon.com/Bobbins-Industrial-Sewing-Consew-Cutex/dp/B018MRGR7C&sa=D&source=editors&ust=1676742692851178&usg=AOvVaw3s8z73WbUVpL9X9fKiIm77 "https://www.google.com/url?q=https://www.amazon.com/Bobbins-Industrial-Sewing-Consew-Cutex/dp/B018MRGR7C&sa=D&source=editors&ust=1676742692851178&usg=AOvVaw3s8z73WbUVpL9X9fKiIm77")

# Tool Tutorial

Link to PDF Tool Tutorial: [letter size walking foot 2025.pdf](https://wiki.protohaven.org/attachments/254)

Link to PDF Tool Poster:

<span style="background-color: rgb(241, 196, 15);">TODO: factor out content shared with [Industrial Straight Stitch](https://wiki.protohaven.org/books/tool-guides/chapter/textiles-juki-straight-stitch "Industrial Straight Stitch")</span>

This machine is intended for use on heavy materials like vinyl, leather and heavy layers of upholstery. The stepping feeding motion promises the consistent feeding of multiple layers or heavy duty materials without stitch gathering or layer unevenness.

Maximum sewing speed is 3,000 stitches per minute!

# Warnings

🚫 Do not push or pull material while stitching.  
⚠️ Power off the machine before threading, inserting the bobbin, or handling the needle.  
⚠️ This machine retains some power in the motor after powering off. Drain it by pressing the foot pedal while keeping hands away from the machine.  
⚠️ Keep hair, loose clothing, and fingers away from all moving parts!

See the Common Hazards section for more information.

### MACHINE ANATOMY

<div class="section_highlight_wrapper" id="bkmrk-"><div class="level3"><div class="table sectionedit5"><table class="inline"><tbody><tr class="row0"><td class="col0">[![machine overview](https://protohaven.org/wiki/_media/tools/imported/wf_machine_overview.jpg?w=680&tok=144708 "machine overview")](https://protohaven.org/wiki/_detail/tools/imported/wf_machine_overview.jpg?id=tools%3Asewing_walking_foot%3Astart "tools:imported:wf_machine_overview.jpg")</td></tr></tbody></table>

</div></div></div>1\. **Bobbin Winding parts -** pre-tension bar, tension, and winder  
2\. **Hand Wheel -** Manually advances the machine (turns downwards only)  
3\. **Reverse Lever -** to allow back-stitching at the end of seams  
4\. **Stitch Length Selector -** Adjusts size of stitch  
5\. **Safety Clutch -** Release button for safety lock out mechanism  
6\. **Tensioner -** keeps stitches even  
7\. **Check Spring -** Keeps the thread taught as the take-up lever moves.(Do Not Adjust!)  
8\. **Walking Presser Foot -** Holds material down to the bed while sewing  
9\. **Feed Dog Mechanism -** Moves with presser foot to feed material  
10.**Bobbin Hatch Cover**  
11.**Needle**  
12.**Manual Presser Foot Lifter** (back of machine head)  
13.**Thread Take-up lever -** part of the thread feeding mechanism that pulls thread off the spool  
14.**Flat 4-hole Thread Guide and 2-hole Thread Guide**

## Tool Safety

### COMMON HAZARDS

The most common hazards are thread jams and broken needles. Watch for binds and jams —stop immediately if they occur.

<div class="section_highlight_wrapper" id="bkmrk-this-machine-has-a-s"><div class="level3">- <div class="li">This machine has a safety mechanism to avoid jamming. It must be reset after a jam before continuing. (See Safety Reset)</div>
- <div class="li">Ensure the needle and thread are removed before winding a bobbin</div>
- <div class="li">Avoid pulling/pushing fabric, which may misalign and break the needle</div>

</div></div>The most **significant hazard** is injury. Always power off and run the machine until the motor drains before handling, adjusting, or threading.

<div class="section_highlight_wrapper" id="bkmrk-keep-fingers-3%E2%80%9D-away"><div class="level3">- <div class="li">Keep fingers 3” away from the needle</div>
- <div class="li">Power off and drain the motor before:</div>
    - <div class="li">Threading</div>
    - <div class="li">Replacing needles</div>
    - <div class="li">Removing jams</div>

- <div class="li">Tie back hair and scarves</div>
- <div class="li">Tuck sleeves behind elbows</div>

</div></div>### PROHIBITED MATERIALS

Thread Jams and needle breakage are critical concerns. Material that is too thick or rigid will lead to needle breakage.

Industrial machines **will not “step over” pins** in the fabric. Hitting one will break the needle and send broken parts into the hook below.

For those reasons, it is important to avoid:

<div class="section_highlight_wrapper" id="bkmrk-pins-in-the-fabric-a"><div class="level3">- <div class="li">Pins in the fabric</div>
- <div class="li">Abrasives</div>
- <div class="li">Paper and cardboard products</div>
- <div class="li">Plastics</div>
- <div class="li">Rigid Material (non-fabric)</div>

</div></div>### Initial Setup

Wipe down the machine and bed to clean up any oil or dust. Power on the machine. Ensure safety is not engaged, if the machine seems to be jammed, see [Troubleshooting](https://protohaven.org/wiki/tools/sewing_walking_foot/start#troubleshooting "tools:sewing_walking_foot:start ↵"). Wind the bobbin. Power off the machine to insert the bobbin and thread the machine. Ensure the needle is usable and appropriate for the material and thread. Set the needle position. Begin operation.

<div class="section_highlight_wrapper" id="bkmrk--1"></div>### NEEDLE ANATOMY

[![industrial_walking_foot_image5.jpg](https://protohaven.org/wiki/_media/tools/industrial_walking_foot_image5.jpg?w=580&tok=2f106e "industrial_walking_foot_image5.jpg")](https://protohaven.org/wiki/_detail/tools/industrial_walking_foot_image5.jpg?id=tools%3Asewing_walking_foot%3Astart "tools:industrial_walking_foot_image5.jpg")

#### CHECKING NEEDLE SIZE

<div class="section_highlight_wrapper" id="bkmrk-grab-a-needle-and-ab"><div class="level4">1. <div class="li">Grab a needle and about 12 inches of the intended thread</div>
2. <div class="li">Thread the needle</div>
3. <div class="li">Hold both ends of the thread, creating a 60 degree slope with one end to see if the needle is able to slide along the slope</div>
4. <div class="li">Reverse the process to see if the needle slides back</div>

</div></div>If the needle does not freely slide down the thread, the size may be too small. As a general rule, you’ll want the smallest size needle that will slide freely down the thread.

### WIND THE BOBBIN (Size M available in the Protohaven store)

[![](https://protohaven.org/wiki/_media/tools/imported/bobbin_winding.jpg?w=600&tok=5d1b17)](https://protohaven.org/wiki/_detail/tools/imported/bobbin_winding.jpg?id=tools%3Asewing_walking_foot%3Astart "tools:imported:bobbin_winding.jpg")

**Caution :** Be sure all object are off the table! The needle does not dis-engage like a consumer machine. It is preferable to remove the needle to avoid injury.

<div class="section_highlight_wrapper" id="bkmrk-check-the-bobbin-hou"><div class="level3">1. <div class="li">Check the bobbin housing for lint, brush it out if necessary.</div>
2. <div class="li">Pass the thread in order of (1) through (4)</div>
3. <div class="li">Lift the manual presser foot lever to raise the presser foot.</div>
4. <div class="li">Gently push the foot pedal until the bobbin is full—it shuts off automatically.</div>

</div></div>Please Note: If the bobbin is lop-sided, it can be used with caution, although it can affect tension.

<div class="section_highlight_wrapper" id="bkmrk--4"></div>### WINDING THE BOBBIN WHILE SEWING

For large projects, a second bobbin can be wound while sewing.

<div class="section_highlight_wrapper" id="bkmrk-a-second-spool-of-th"><div class="level3">1. <div class="li">A second spool of thread is required.</div>
2. <div class="li">The needle and presser foot remain in place</div>
3. <div class="li">Follow all other instructions in “[Bobbin Winding](https://protohaven.org/wiki/tools/sewing_walking_foot/start#bobbin_winding "tools:sewing_walking_foot:start ↵")” above</div>

</div></div>### ATTACH BOBBIN CASE

<div class="section_highlight_wrapper" id="bkmrk-set-the-bobbin-into-"><div class="level3"><div class="table sectionedit16"><table class="inline"><tbody><tr class="row0"><td class="col0">[![](https://protohaven.org/wiki/_media/tools/industrial_walking_foot_image22.png?w=500&tok=f01f7d)](https://protohaven.org/wiki/_detail/tools/industrial_walking_foot_image22.png?id=tools%3Asewing_walking_foot%3Astart "tools:industrial_walking_foot_image22.png")</td><td class="col1">Set the bobbin into the bobbin case.  
  
  
Pass the thread around the thread slit (1), and pass it under the tension spring (2)  
  
Adjust so that the bobbin rotates in direction B when thread is pulled in direction A</td></tr></tbody></table>

</div></div><div class="level3"><div class="table sectionedit17"><table class="inline"><tbody><tr class="row0"><td class="col0 leftalign">[![industrial_walking_foot_image19.jpg](https://protohaven.org/wiki/_media/tools/industrial_walking_foot_image19.jpg?w=500&tok=c69371 "industrial_walking_foot_image19.jpg")](https://protohaven.org/wiki/_detail/tools/industrial_walking_foot_image19.jpg?id=tools%3Asewing_walking_foot%3Astart "tools:industrial_walking_foot_image19.jpg")</td><td class="col1">Orient the lower knob (1) of the bobbin case to the indented part (2) of the bobbin housing’s inner hook.  
  
  
Push the bobbin case until it clicks.</td></tr></tbody></table>

</div></div></div>### INSERT NEEDLE

<div class="section_highlight_wrapper" id="bkmrk-turn-the-handwheel-f"><div class="level3"><div class="table sectionedit19"><table class="inline"><tbody><tr class="row0"><td class="col0">[![](https://protohaven.org/wiki/_media/tools/industrial_walking_foot_image7.png)](https://protohaven.org/wiki/_detail/tools/industrial_walking_foot_image7.png?id=tools%3Asewing_walking_foot%3Astart "tools:industrial_walking_foot_image7.png")</td><td class="col1">Turn the handwheel forward until the needle bar is at the highest position  
  
- Loosen the needle clamp screw and hold the needle so that scarf is to the right and the long groove in the needle is exactly to the left.  
- Insert the needle (1) into the clamp hole until it will go no further.  
- Tighten the needle clamp screw firmly (monkey tight—not gorrilla!)</td></tr></tbody></table>

</div></div></div>### THREAD THE MACHINE

[![industrial_walking_foot_image21.jpg](https://protohaven.org/wiki/_media/tools/industrial_walking_foot_image21.jpg "industrial_walking_foot_image21.jpg")](https://protohaven.org/wiki/_detail/tools/industrial_walking_foot_image21.jpg?id=tools%3Asewing_walking_foot%3Astart "tools:industrial_walking_foot_image21.jpg")

  
Thread the machine following the order of (1) through (13) as shown above.

Move the handwheel towards you, never away to get the top thread to take up the bobbin thread.

### CRITICAL THREADING DETAILS


<div class="section_highlight_wrapper" id="bkmrk-ensure%C2%A0the-presser-f"><div class="level3"><div class="table sectionedit22"><table class="inline" style="width: 100.242%; height: 659.46px;"><tbody><tr class="row0" style="height: 444.898px;"><td class="col0 leftalign" style="width: 41.6134%; height: 444.898px;">[![tension and check spring.jpg](https://wiki.protohaven.org/uploads/images/gallery/2025-04/scaled-1680-/tension-and-check-spring.jpg)](https://wiki.protohaven.org/uploads/images/gallery/2025-04/tension-and-check-spring.jpg)</td><td class="col1 leftalign" style="width: 58.0252%; height: 444.898px;">[![industrial_walking_foot_image12.jpg](https://protohaven.org/wiki/_media/tools/industrial_walking_foot_image12.jpg?w=425&tok=86e3ca "industrial_walking_foot_image12.jpg")](https://protohaven.org/wiki/_detail/tools/industrial_walking_foot_image12.jpg?id=tools%3Asewing_walking_foot%3Astart "tools:industrial_walking_foot_image12.jpg")</td></tr><tr class="row1" style="height: 214.562px;"><td class="col0" style="width: 41.6134%; height: 214.562px;">Ensure the presser foot is UP.  
  
While holding the thread taught on either side, pass the thread between the tension discs, between the spring guide, and above the spring.

  
<span style="text-decoration: underline; background-color: rgb(45, 194, 107);"><span style="color: rgb(0, 0, 0); text-decoration: underline;">Insert "check spring click" photo here</span></span>

  
You will hear a light click as the thread crosses over a small hook on the inside of the disc. (just visible through the hole next to the spring)

</td><td class="col1 leftalign" style="width: 58.0252%; height: 214.562px;">Please Note: Do not adjust the check spring knob (#6)!   
  
Its function is to keep the thread taught while the take up arm moves to the highest position. Loosening the nut will disable the spring, causing the machine to come unthreaded or tangle while sewing.  
  
This spring should always have enough tension to pull the thread down.</td></tr></tbody></table>

</div></div></div>[![three last parts_f.jpg](https://wiki.protohaven.org/uploads/images/gallery/2025-04/scaled-1680-/three-last-parts-f.jpg)](https://wiki.protohaven.org/uploads/images/gallery/2025-04/three-last-parts-f.jpg)

 Down through and under the next two guides and the bottom slot, then through the hole above the needle.

Thread the needle left to right:

<div class="section_highlight_wrapper" id="bkmrk--7"></div>## Basic Operation

<div class="section_highlight_wrapper" id="bkmrk--8"></div>### CONTROL PANEL

<div class="section_highlight_wrapper" id="bkmrk-1.-on%2Foff-switch%3A-ma"><div class="level3"><div class="table sectionedit25"><table class="inline"><tbody><tr class="row0"><td class="col0">[![](https://protohaven.org/wiki/_media/tools/industrial_walking_foot_image16a.png?w=300&tok=6500e6)](https://protohaven.org/wiki/_detail/tools/industrial_walking_foot_image16a.png?id=tools%3Asewing_walking_foot%3Astart "tools:industrial_walking_foot_image16a.png")</td><td class="col1">1. On/Off Switch: Main power to the machine  
2. Increase Speed: Increase r.p.m.  
3. Decrease Speed: Decrease r.p.m.  
4. Needle Position Mode: Set the needle to up / down position  
5. Rotation: FOR AUTHORIZED MAINTENANCE ONLY</td></tr></tbody></table>

</div></div></div>### SETTING THE NEEDLE POSITION

Setting the needle position allows you to control whether the needle will finish a stitch engaged in your fabric or not. A light press and release of the foot pedal will move the needle exactly one stitch forward, ending the needle in the desired position setting.

<div class="section_highlight_wrapper" id="bkmrk--9"><div class="level3"><div class="table sectionedit27"><table class="inline"><tbody><tr class="row0"><td class="col0">[![?400](https://protohaven.org/wiki/_media/tools/imported/needle_up_down.jpg?w=800&tok=4dcad7 "?400")](https://protohaven.org/wiki/_detail/tools/imported/needle_up_down.jpg?id=tools%3Asewing_walking_foot%3Astart "tools:imported:needle_up_down.jpg")</td></tr></tbody></table>

</div></div><div class="level3">  
</div></div>### ADJUSTING THE TENSION

[![](https://protohaven.org/wiki/_media/tools/industrial_walking_foot_image6.png?w=600&tok=90747e)](https://protohaven.org/wiki/_detail/tools/industrial_walking_foot_image6.png?id=tools%3Asewing_walking_foot%3Astart "tools:industrial_walking_foot_image6.png")

To increase the tension, turn the tension nut (1) clockwise (A). To reduce the tension, turn the tension nut (1) to the counterclockwise (B).

<div class="section_highlight_wrapper" id="bkmrk-normal-tension-for-s"><div class="level3"><div class="table sectionedit29"><table class="inline"><tbody><tr class="row0"><td class="col0 leftalign">[![021Q5D0101(D)(EN.ES.FR).cdr](https://protohaven.org/wiki/_media/tools/industrial_walking_foot_image9.jpg?w=280&tok=46f7c8 "021Q5D0101(D)(EN.ES.FR).cdr")](https://protohaven.org/wiki/_detail/tools/industrial_walking_foot_image9.jpg?id=tools%3Asewing_walking_foot%3Astart "tools:industrial_walking_foot_image9.jpg")</td><td class="col1 leftalign">[![021Q5D0101(D)(EN.ES.FR).cdr](https://protohaven.org/wiki/_media/tools/industrial_walking_foot_image4.jpg?w=280&tok=f768ad "021Q5D0101(D)(EN.ES.FR).cdr")](https://protohaven.org/wiki/_detail/tools/industrial_walking_foot_image4.jpg?id=tools%3Asewing_walking_foot%3Astart "tools:industrial_walking_foot_image4.jpg")</td><td class="col2 leftalign">[![021Q5D0101(D)(EN.ES.FR).cdr](https://protohaven.org/wiki/_media/tools/industrial_walking_foot_image20.jpg?w=280&tok=74ed39 "021Q5D0101(D)(EN.ES.FR).cdr")](https://protohaven.org/wiki/_detail/tools/industrial_walking_foot_image20.jpg?id=tools%3Asewing_walking_foot%3Astart "tools:industrial_walking_foot_image20.jpg")</td></tr><tr class="row1"><td class="col0 leftalign">Normal tension for straight stitch sewing.</td><td class="col1 leftalign">Too loose for straight stitch sewing.</td><td class="col2 leftalign">Turn the dial clockwise to increase tension.</td></tr></tbody></table>

</div></div><div class="level3">  
</div></div>### BACK STITCH/REVERSE SEWING

<div class="section_highlight_wrapper" id="bkmrk-press-down-the-rever"><div class="level3"><div class="table sectionedit31"><table class="inline"><tbody><tr class="row0"><td class="col0 leftalign">[![industrial_walking_foot_image15.jpg](https://protohaven.org/wiki/_media/tools/industrial_walking_foot_image15.jpg?w=600&tok=5c1a32 "industrial_walking_foot_image15.jpg")](https://protohaven.org/wiki/_detail/tools/industrial_walking_foot_image15.jpg?id=tools%3Asewing_walking_foot%3Astart "tools:industrial_walking_foot_image15.jpg")</td><td class="col1">Press down the reverse feed control lever (1). Release the lever and the machine will run in the normal feed direction</td></tr></tbody></table>

</div></div><div class="level3">  
</div></div>### SAFETY RESET

This machine has a safety to protect the mechanism from damage during a jam. The handwheel will be frozen, and the hook will not rotate around the bobbin.

<div class="section_highlight_wrapper" id="bkmrk-1.-cut-away-the-knot"><div class="level3"><div class="table sectionedit33"><table class="inline"><tbody><tr class="row0"><td class="col0 rightalign">[![](https://protohaven.org/wiki/_media/tools/industrial_walking_foot_image18.png?w=450&tok=42d464)](https://protohaven.org/wiki/_detail/tools/industrial_walking_foot_image18.png?id=tools%3Asewing_walking_foot%3Astart "tools:industrial_walking_foot_image18.png")</td><td class="col1">1. Cut away the knot near the needle, remove the fabric.
2. Open the bobbin housing and remove any stray thread, be sure the bobbin is not stuck.
3. Press in the safety button (1) and turn the hand wheel away from you till it clicks, and the button pops up.
4. Turn the wheel towards you. You may hear another click. Continue turning till the take-up lever is at its highest position.
5. Re-thread and continue sewing.

</td></tr></tbody></table>

</div></div><div class="level3">  
</div></div>## Cleanup

<div class="section_highlight_wrapper" id="bkmrk-power-off%C2%A0and-drain-"><div class="level2">1. <div class="li">Power off and drain the machine</div>
2. <div class="li">Unthread machine head and spool</div>
3. <div class="li">Remove bobbin</div>
4. <div class="li">Wipe down, vacuum, and brush out lint and stray clippings</div>
5. <div class="li">Sweep up threads, lint, and debris and deposit in waste bins</div>
6. <div class="li">Return checkout kit</div>

</div></div>### Maintenance Requests

<div class="section_highlight_wrapper" id="bkmrk-notify-a-tech-and-re"><div class="level3">- Notify a tech and record issues at [http://protohaven.org/maintenance](http://protohaven.org/maintenance "http://protohaven.org/maintenance"). This informs our staff and volunteer maintenance crew of any issues.

</div></div>## Troubleshooting

<div class="section_highlight_wrapper" id="bkmrk-common-issues-possib"><div class="level2"><div class="table sectionedit37"><table class="inline"><tbody><tr class="row0"><td class="col0 leftalign">**Common Issues**</td><td class="col1 leftalign">**Possible Causes**</td><td class="col2 leftalign">**Resolutions**</td><td class="col3"> </td></tr><tr class="row1"><td class="col0 leftalign">Machine stops working after a jam—the hand wheel will not turn, or the hook does not rotate around the bobbin.</td><td class="col1 leftalign">The safety mechanism has locked the hook.</td><td class="col2">Power off and drain the machine. (see Safety Reset above)  
  
Remove the jam near the needle and below, inside the bobbin housing.  
  
[Reset the safety](https://www.google.com/url?q=https://www.youtube.com/watch?v%3DMKlGOzQdMXM&sa=D&source=editors&ust=1676742692834008&usg=AOvVaw2faDfrwedVI1Eup6lq0sKc "https://www.google.com/url?q=https://www.youtube.com/watch?v%3DMKlGOzQdMXM&sa=D&source=editors&ust=1676742692834008&usg=AOvVaw2faDfrwedVI1Eup6lq0sKc").</td><td class="col3"> </td></tr><tr class="row2"><td class="col0 leftalign">Thread comes out of the tensioners</td><td class="col1">The thread around the check spring disk isn’t pulled up until it clicks.</td><td class="col2 leftalign">Re-thread the machine with the presser foot raised to take tension off during threading. See [Critical Threading](https://protohaven.org/wiki/tools/sewing_walking_foot/start#criticalthreading "tools:sewing_walking_foot:start ↵")</td><td class="col3"> </td></tr><tr class="row3"><td class="col0 leftalign"> </td><td class="col1 leftalign">The check spring disk may be loose.</td><td class="col2 leftalign">Make a maintenance request at [http://protohaven.org/maintenance](http://protohaven.org/maintenance "http://protohaven.org/maintenance") and notify the tech on duty.</td><td class="col3"> </td></tr><tr class="row4"><td class="col0 leftalign">Missed stitches  
  
</td><td class="col1 leftalign">The needle is inserted improperly.</td><td class="col2 leftalign">Be sure that the scarf is to the right</td></tr><tr class="row5"><td class="col0 leftalign"> </td><td class="col1 leftalign">The needle is threaded right to left</td><td class="col2 leftalign">Re-thread left to right</td><td class="col3"> </td></tr><tr class="row6"><td class="col0 leftalign"> </td><td class="col1 leftalign">The needle is bent or broken</td><td class="col2 leftalign">Replace the needle</td><td class="col3"> </td></tr><tr class="row7"><td class="col0 leftalign">Loud noise while winding the bobbin</td><td class="col1 leftalign">The presser foot is down.</td><td class="col2 leftalign">Use the manual lever to pick it up. Unthread the needle, (preferable take it out) be sure nothing can roll towards the drive shaft.</td><td class="col3"> </td></tr><tr class="row8"><td class="col0">Thread seems stuck—can’t pull stitched fabric away from the presser foot after sewing the seam.  
  
</td><td class="col1 leftalign">The tensioners are not dis-engaged</td><td class="col2 leftalign">Push the knee pedal HARD to the right to dis-engage the tension.  
  
</td><td class="col3"> </td></tr></tbody></table>

</div></div></div>## Special Setups

<div class="section_highlight_wrapper" id="bkmrk--11"><div class="level2">  
</div></div>### CHECK SPRING

The Check Spring is used to alter the amount of thread being pulled away from the thread spool above, used for very small or very large stitches or very thick material..

To adjust the stroke of the check spring, please make a Special Setup Arrangement with a Protohaven Staff Member to gain clearance in advance of use.

## Additional Resources

<div class="section_highlight_wrapper" id="bkmrk--12"><div class="level2">  
</div></div>### HOW-TO GUIDES

[Machine Manual](https://www.google.com/url?q=https://drive.google.com/file/d/116O_0pvLrTCr9say9q8DxgVoa7hr-6hc/view?usp%3Dsharing&sa=D&source=editors&ust=1676742692844256&usg=AOvVaw2li3K5WSOg24DB2ejsDUwC "https://www.google.com/url?q=https://drive.google.com/file/d/116O_0pvLrTCr9say9q8DxgVoa7hr-6hc/view?usp%3Dsharing&sa=D&source=editors&ust=1676742692844256&usg=AOvVaw2li3K5WSOg24DB2ejsDUwC")

[Visual chart of needle types](https://www.google.com/url?q=https://sewtootpatterns.com/wp-content/uploads/2016/02/Needle_Types.jpg&sa=D&source=editors&ust=1676742692844734&usg=AOvVaw1vA5UnFt2Un_WhspnOVVrv "https://www.google.com/url?q=https://sewtootpatterns.com/wp-content/uploads/2016/02/Needle_Types.jpg&sa=D&source=editors&ust=1676742692844734&usg=AOvVaw1vA5UnFt2Un_WhspnOVVrv")

[Threading the machine](https://www.google.com/url?q=https://www.youtube.com/watch?v%3DnxqTk4umcNs&sa=D&source=editors&ust=1676742692845128&usg=AOvVaw2RJkgIjvBNSgnMub3py937 "https://www.google.com/url?q=https://www.youtube.com/watch?v%3DnxqTk4umcNs&sa=D&source=editors&ust=1676742692845128&usg=AOvVaw2RJkgIjvBNSgnMub3py937")

Juki Walking foot overview:

[www.youtube.com/watch?v=qfXDo4xr-FU](https://www.youtube.com/watch?v%3DqfXDo4xr-FU&sa=D&source=editors&ust=1676742692845621&usg=AOvVaw3Nl_mDfKBc0VXfGmtQrfJQ "https://www.youtube.com/watch?v%3DqfXDo4xr-FU&sa=D&source=editors&ust=1676742692845621&usg=AOvVaw3Nl_mDfKBc0VXfGmtQrfJQ")

[www.youtube.com/watch?v=cr2VmyJDZFk](https://www.youtube.com/watch?v%3Dcr2VmyJDZFk&sa=D&source=editors&ust=1676742692845930&usg=AOvVaw0juor-XkFSjLZViWonv1ZV "https://www.youtube.com/watch?v%3Dcr2VmyJDZFk&sa=D&source=editors&ust=1676742692845930&usg=AOvVaw0juor-XkFSjLZViWonv1ZV")

[Common errors](https://www.youtube.com/watch?v%3DBCSwO_OxZNg&sa=D&source=editors&ust=1676742692846317&usg=AOvVaw3Vyi-m9jqvJaJv6TPuTV09 "https://www.youtube.com/watch?v%3DBCSwO_OxZNg&sa=D&source=editors&ust=1676742692846317&usg=AOvVaw3Vyi-m9jqvJaJv6TPuTV09")

How to thread and oil the Juki walking foot:

[www.youtube.com/watch?v=aaNsmgHQzTo&amp;t=31s](https://www.youtube.com/watch?v%3DaaNsmgHQzTo%26t%3D31s&sa=D&source=editors&ust=1676742692846832&usg=AOvVaw1tu-hR2NShDLdDCUizJ__- "https://www.youtube.com/watch?v%3DaaNsmgHQzTo%26t%3D31s&sa=D&source=editors&ust=1676742692846832&usg=AOvVaw1tu-hR2NShDLdDCUizJ__-")

[www.youtube.com/watch?v=Y1ZYwIwYRC0&amp;t=2s](https://www.youtube.com/watch?v%3DY1ZYwIwYRC0%26t%3D2s&sa=D&source=editors&ust=1676742692847150&usg=AOvVaw3STcXlyYgNiNDom-iKxKne "https://www.youtube.com/watch?v%3DY1ZYwIwYRC0%26t%3D2s&sa=D&source=editors&ust=1676742692847150&usg=AOvVaw3STcXlyYgNiNDom-iKxKne")

[Sewing Gold Channel](https://www.youtube.com/channel/UC9DPdV59J32ftSwG2boGYlQ&sa=D&source=editors&ust=1676742692847907&usg=AOvVaw0MjZcF0o08Kjb36Fcrk8-u "https://www.youtube.com/channel/UC9DPdV59J32ftSwG2boGYlQ&sa=D&source=editors&ust=1676742692847907&usg=AOvVaw0MjZcF0o08Kjb36Fcrk8-u"): Operating videos on many machine models, and how-to’s on sewing a range of fabrics

[Ageberry - How to choose thread](https://www.ageberry.com/sewing-thread-sizes-how-to-choose/&sa=D&source=editors&ust=1676742692848333&usg=AOvVaw1DiBrfmCHcZdyVrAL5itVs "https://www.ageberry.com/sewing-thread-sizes-how-to-choose/&sa=D&source=editors&ust=1676742692848333&usg=AOvVaw1DiBrfmCHcZdyVrAL5itVs")

<div class="section_highlight_wrapper" id="bkmrk--13"></div><div class="section_highlight_wrapper" id="bkmrk--14"></div>## Regular Maintenance

<span style="background-color: rgb(241, 196, 15);">TODO: Sort into maintenance books</span>

#### Lubrication

<div class="section_highlight_wrapper" id="bkmrk-faceplate%2C%C2%A0manual-p."><div class="level4">- <div class="li">Faceplate, [manual p. 15](https://drive.google.com/file/d/116O_0pvLrTCr9say9q8DxgVoa7hr-6hc "https://drive.google.com/file/d/116O_0pvLrTCr9say9q8DxgVoa7hr-6hc")</div>
- <div class="li">Top plate, [manual p. 16](https://drive.google.com/file/d/116O_0pvLrTCr9say9q8DxgVoa7hr-6hc/view?usp%3Dsharing&sa=D&source=editors&ust=1676742692854982&usg=AOvVaw0UTRcXxb0FHpr7aED__a1T "https://drive.google.com/file/d/116O_0pvLrTCr9say9q8DxgVoa7hr-6hc/view?usp%3Dsharing&sa=D&source=editors&ust=1676742692854982&usg=AOvVaw0UTRcXxb0FHpr7aED__a1T")</div>
- <div class="li">Hook, [manual p. 17](https://drive.google.com/file/d/116O_0pvLrTCr9say9q8DxgVoa7hr-6hc/view?usp%3Dsharing&sa=D&source=editors&ust=1676742692855359&usg=AOvVaw0BJbpURjy009W9LqIZ--ip "https://drive.google.com/file/d/116O_0pvLrTCr9say9q8DxgVoa7hr-6hc/view?usp%3Dsharing&sa=D&source=editors&ust=1676742692855359&usg=AOvVaw0BJbpURjy009W9LqIZ--ip")</div>

- <div class="li">[Video Part 1](https://www.youtube.com/watch?v=cRUNec9Qrgs "https://www.youtube.com/watch?v=cRUNec9Qrgs")</div>
- <div class="li">[https://www.youtube.com/watch?v=onPC3g70KZM](https://www.youtube.com/watch?v=onPC3g70KZM "https://www.youtube.com/watch?v=onPC3g70KZM")  
    </div>

</div></div>[youtube.com/user/TRADERnel](https://www.youtube.com/user/TRADERnel&sa=D&source=editors&ust=1676742692856410&usg=AOvVaw2wRqLGUmRix5ikMvwUpJwK "https://www.youtube.com/user/TRADERnel&sa=D&source=editors&ust=1676742692856410&usg=AOvVaw2wRqLGUmRix5ikMvwUpJwK")

#### Safety Clutch Release

<div class="section_highlight_wrapper" id="bkmrk-resetting-the-safety"><div class="level4">- <div class="li">Resetting the Safety Clutch, [manual p. 43](https://drive.google.com/file/d/116O_0pvLrTCr9say9q8DxgVoa7hr-6hc/view?usp%3Dsharing&sa=D&source=editors&ust=1676742692857253&usg=AOvVaw0xBBt7ZvOQkCMrDLjj258k "https://drive.google.com/file/d/116O_0pvLrTCr9say9q8DxgVoa7hr-6hc/view?usp%3Dsharing&sa=D&source=editors&ust=1676742692857253&usg=AOvVaw0xBBt7ZvOQkCMrDLjj258k")</div>
- <div class="li">[Releasing the safety clutch video](https://www.youtube.com/watch?v%3DMKlGOzQdMXM&sa=D&source=editors&ust=1676742692857602&usg=AOvVaw0_N4o-8Ec7t4ESAAZFhbQ6 "https://www.youtube.com/watch?v%3DMKlGOzQdMXM&sa=D&source=editors&ust=1676742692857602&usg=AOvVaw0_N4o-8Ec7t4ESAAZFhbQ6")</div>
- <div class="li">[Hook disassembly for jams or broken needle video](https://www.youtube.com/watch?v%3D6PGPtkjsqus&sa=D&source=editors&ust=1676742692857932&usg=AOvVaw3qEtTTwFXVe6kL2UnBdcfg "https://www.youtube.com/watch?v%3D6PGPtkjsqus&sa=D&source=editors&ust=1676742692857932&usg=AOvVaw3qEtTTwFXVe6kL2UnBdcfg")</div>

</div></div>#### Adjusting the Check Spring

The check spring must always be taut so that it naturally bounces back. If the nut has been loosened, and the spring is not pulling back down, it must be reset.

<div class="section_highlight_wrapper" id="bkmrk-adjusting-the-thread"><div class="level4">- <div class="li">Adjusting the thread take-up spring, [manual p. 28](https://drive.google.com/file/d/116O_0pvLrTCr9say9q8DxgVoa7hr-6hc/view?usp%3Dsharing&sa=D&source=editors&ust=1676742692858723&usg=AOvVaw0XFNNRQUEMNPAg7ycZFSCz "https://drive.google.com/file/d/116O_0pvLrTCr9say9q8DxgVoa7hr-6hc/view?usp%3Dsharing&sa=D&source=editors&ust=1676742692858723&usg=AOvVaw0XFNNRQUEMNPAg7ycZFSCz")</div>

- <div class="li">[Check spring adjustments, video](https://www.youtube.com/watch?v%3DXicwSGPaYiA&sa=D&source=editors&ust=1676742692859060&usg=AOvVaw2Jzv4RzFRuD87r4KOdvtGl "https://www.youtube.com/watch?v%3DXicwSGPaYiA&sa=D&source=editors&ust=1676742692859060&usg=AOvVaw2Jzv4RzFRuD87r4KOdvtGl")</div>

</div></div>