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Pfaff 1245 Industrial Sewing Machine: Maintenance Guide
Quick answer: Regular maintenance for your Pfaff 1245 involves daily cleaning and oiling, weekly checks of key components like the rotary hook and needle plate, and periodic replacement of wear parts such as the rotary hook, needle plate, feed dog, and presser feet to ensure optimal stitch quality and machine longevity.
Maintaining your Pfaff 1245 industrial sewing machine is key to its longevity, consistent performance, and high-quality stitching. As a robust walking foot machine, the 1245 is built for heavy-duty work, but regular care prevents costly breakdowns and ensures smooth operation. This guide outlines essential maintenance tasks, identifies common wear parts, and provides a schedule to keep your machine in top condition.
Two-minute checks before you open anything
- Check needle for bends or dullness.
- Ensure thread is correctly routed through all guides and tension discs.
- Verify bobbin is wound evenly and inserted correctly.
- Inspect the needle plate for burrs around the needle hole.
- Listen for any unusual noises during operation.
- Check oil levels and ensure proper lubrication.
1. Rotary Hook Assembly high likelihood
How to tell
Skipped stitches, poor stitch formation, thread breakage, excessive noise from the hook area, or visible burrs and nicks on the hook point or bobbin case race. The hook point may become dull or damaged, and the bobbin case race can wear, causing friction.
Fix
- Turn off and unplug the machine.
- Remove the needle plate and bobbin case.
- Carefully inspect the hook point for any nicks, burrs, or dullness. Check the bobbin case race for grooves or rough spots.
- If damage is minor, gently polish with very fine emery cloth, being careful not to change the hook timing or shape.
- If damage is significant, the rotary hook assembly needs replacement. Consult your machine manual for specific removal and installation instructions, paying close attention to hook timing.
- After replacement, re-thread the machine and test stitch on scrap material.
We stock various compatible rotary hooks such as HPF-1242(A) Rotary Hook + Cap ASM for PFAFF 1241, 1242, 1243, 1244, Replaces 91-140539-91, Koban KRT1242-S HPF-1242 91-140539-91 Rotary Hook for Pfaff 1241-1246, and KOBAN 91-140538-91 KRT1242-S Rotary Hook for PFAFF 1241-1246.
Parts involved: Rotary hooks & bobbin cases →
2. Needle Plate & Feed Dog Set high likelihood
How to tell
Fabric not feeding smoothly, uneven stitch length, damage to fabric, needle deflection, or excessive needle breakage. Inspect the needle hole for widening or burrs, and the feed dog teeth for wear, dullness, or damage.
Fix
- Turn off and unplug the machine.
- Remove the presser foot.
- Unscrew and remove the needle plate. Inspect the needle hole for any nicks, burrs, or enlargement. A damaged needle hole can cause needle deflection and thread breakage.
- Inspect the feed dog teeth for wear, flatness, or missing sections. Worn feed dogs will not grip fabric effectively.
- If either component shows significant wear or damage, replace the PFAFF 91-026746-04C Needle Plate & 91-026745-04C Feed Dog Set together for best performance.
- Install the new feed dog and needle plate, ensuring they are seated correctly and screws are tightened securely.
- Test stitch on scrap material to confirm proper fabric feeding and stitch quality.
We offer the PFAFF 91-026746-04C Needle Plate & 91-026745-04C Feed Dog Set for 145, 1245, MA1245, TW1-1245, CSU-1245 Industrial Sewing Machines.
Parts involved: Presser feet & sewing parts →
Parts you may need for Pfaff
In stock, tested before dispatch, Buyer Protection on every order. Part types for this problem: Rotary hooks & bobbin cases, Needles & needle bars, Thread path & tension, Presser feet & sewing parts.
Flying Tiger HAX1 15x1 Sewing Machine Needles 100-Pack for Brother ...$ 13.99View part →
PFAFF 335H, 335, 335G Needle Plate, Feed Dog, Needle, Presser Foot,...$ 27.09View part →
Groz-Beckert B27 DCX27 81X1 FFG/SES Industrial Sewing Needles Nm 75...$ 37.49View part →
Groz-Beckert 134 DPX5 135X5 Industrial Sewing Needles 100-Pack for ...$ 39.29View part →
KRT470-R Rotary Hook for PFAFF 471-493, GOLDEN WHEEL 9910, 9920, 88...$ 33.99View part →
PFAFF 91-026746-04C Needle Plate & 91-026745-04C Feed Dog Set for 1...$ 36.09View part →All Pfaff parts → Rotary Hooks & Bobbin Cases → Needles & Needle Bars → Thread Path & Tension →
3. Presser Feet medium likelihood
How to tell
Uneven fabric feeding, marking or damaging the fabric, poor stitch formation, or difficulty sewing certain materials. Inspect the bottom surface of the presser foot for wear, grooves, or sharp edges, and check the toe for bending or damage.
Fix
- Turn off and unplug the machine.
- Remove the current presser foot.
- Visually inspect the bottom surface and edges of the presser foot for any signs of wear, such as grooves, rough spots, or deformation.
- If the foot is worn or damaged, replace it with a new one appropriate for your sewing task.
- Attach the new presser foot securely.
- Test stitch on scrap material, observing fabric movement and stitch quality.
We carry various presser feet, including Left & Right Toe Zipper Binding Feet Set for Pfaff 335, 145, 245, 545, 1245 Industrial Sewing Machines.
Parts involved: Presser feet & sewing parts →
4. Bobbin Case Opener medium likelihood
How to tell
Inconsistent thread tension from the bobbin, thread shredding around the bobbin case, or the bobbin case not seating correctly in the hook. The opener can become bent, worn, or misaligned, affecting thread release.
Fix
- Turn off and unplug the machine.
- Remove the needle plate and bobbin case.
- Carefully inspect the bobbin case opener (the small finger that helps control the bobbin thread) for any bends, nicks, or excessive wear.
- If it appears damaged or bent, it may need to be replaced or carefully adjusted. Replacement is often the best option for consistent performance.
- Install the new Pfaff 91-140253-05 Bobbin Case Opener, ensuring it is correctly positioned according to your machine's manual.
- Reassemble the machine and test stitch.
We stock the Pfaff 91-140253-05 Bobbin Case Opener for 1243, 1244, 1245, 1246 Industrial Sewing Machines.
Parts involved: Rotary hooks & bobbin cases →
5. Binder Bracket Plate Mounting Screw low likelihood
How to tell
Binder attachment is loose, wobbly, or misaligned, leading to inconsistent binding application or difficulty in feeding material through the binder. The screw may be loose or stripped.
Fix
- Turn off and unplug the machine.
- Locate the binder bracket plate mounting screw.
- Attempt to tighten the screw. If it tightens securely and the binder is stable, no further action is needed.
- If the screw spins freely without tightening, or if the head is stripped, it needs replacement.
- Remove the old screw and replace it with a new Pfaff 91-000824-25 Binder Bracket Plate Mounting Screw.
- Ensure the binder is securely mounted and aligned before resuming operation.
We provide the Pfaff 91-000824-25 Binder Bracket Plate Mounting Screw for Pfaff 1245 Industrial Sewing Machine.
Parts involved: Screws, springs & small parts →
Maintenance schedule
| When | What to do | Why |
|---|---|---|
| Daily (or every 8 hours of operation) | Clean and oil the machine | Removes lint and debris from the bobbin area, feed dogs, and tension discs, preventing buildup that can cause skipped stitches, thread breakage, and poor stitch quality. Oiling reduces friction and wear on moving parts. |
| Weekly (or every 40 hours of operation) | Inspect rotary hook, needle plate, and feed dogs | Checks for wear, nicks, or burrs on critical stitch-forming components. Early detection of damage prevents further machine issues and maintains stitch quality. |
| Monthly (or every 160 hours of operation) | Clean under the machine head and inspect belts | Removes accumulated dust and lint from internal mechanisms. Checks for wear or tension issues in drive belts, ensuring smooth power transmission. |
| Every 3-6 Months (or every 500-1000 hours of operation) | Replace rotary hook, needle plate, and feed dog set (as needed) | These are high-wear items. Proactive replacement prevents significant stitch quality issues, thread breakage, and potential damage to other components due to worn parts. |
| Annually (or every 2000 hours of operation) | Professional service and internal inspection | A technician can perform deeper cleaning, check for wear in less accessible parts, adjust timing, and lubricate internal components that are not part of daily maintenance, ensuring long-term machine health. |
Stop and call a technician if
- If you encounter persistent issues after performing basic maintenance and part replacements.
- If the machine exhibits unusual noises, vibrations, or smells that you cannot identify or resolve.
- For complex internal adjustments, such as hook timing or feed dog height, if you are not experienced with these procedures.
- If the machine's motor or electrical components show signs of malfunction.
- For any problem that requires specialized tools or diagnostic equipment you do not possess.
Prevent it coming back
- Always use high-quality needles appropriate for your fabric and thread to prevent damage to the needle plate and hook.
- Use only high-quality industrial sewing machine oil and lubricate according to the manufacturer's recommendations.
- Keep your machine clean, especially the bobbin area, feed dogs, and tension discs, to prevent lint buildup and ensure smooth operation.
- Avoid forcing thick materials through the machine; ensure proper needle and thread size are selected.
- Regularly check and tighten any accessible screws to prevent parts from loosening due to vibration.
- Replace worn parts proactively rather than waiting for them to fail completely, which can cause secondary damage.
Frequently asked questions
How often should I oil my Pfaff 1245?
For industrial machines like the Pfaff 1245, daily oiling is crucial, especially if used for extended periods. Refer to your machine's manual for specific oiling points and recommended oil types. Always use high-quality sewing machine oil.
What causes skipped stitches on my Pfaff 1245?
Skipped stitches can be caused by several factors, including a dull or bent needle, incorrect needle size or type, improper threading, incorrect tension, or most commonly, a worn or damaged rotary hook. Inspect your needle and the hook point first.
Why is my fabric not feeding smoothly on the Pfaff 1245?
Poor fabric feeding can be due to worn or damaged feed dogs, a worn needle plate (especially if the needle hole is enlarged), incorrect presser foot pressure, or a damaged presser foot. Ensure the feed dogs are clean and sharp, and the presser foot is appropriate for your material.
Can I replace the rotary hook myself on a Pfaff 1245?
Replacing the rotary hook involves precise timing adjustments. While it is possible for an experienced operator or technician, if you are unsure, it's best to consult your machine's service manual or have a qualified technician perform the replacement to ensure correct hook timing and avoid further damage.
What type of needles should I use for my Pfaff 1245?
The Pfaff 1245 typically uses industrial sewing machine needles. Always refer to your machine's manual for the exact needle system (e.g., 134, DPx5) and choose the appropriate needle size and point type for your specific fabric and thread combination.
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