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Blades set LMS-903 Lewenstein 700 + Singer SH 14 78

Blades set LMS-903 Lewenstein 700 + Singer SH 14 78
Blades set LMS-903 Lewenstein 700 + Singer SH 14 78
Blades set LMS-903 Lewenstein 700 + Singer SH 14 78
Blades set LMS-903 Lewenstein 700 + Singer SH 14 78
Blades set LMS-903 Lewenstein 700 + Singer SH 14 78
  • Stock: In stock
  • Brand: Universal
  • Model: LMS-903_lew700
€ 29.50
Ex Tax: € 29.50

Top and bottom knife for Overlockers.

Make sure you always have an extra spare set of lock blades at home.

Fits on these Sergers:

  • Lewenstein 700 DE lockmachine
  • Singer S 14-78 lockmachine
  • Pfaff 1450 OL element

Here you can see a video how easy it is to replace the blades on yourself

Help my Lock machine doesn’t cut the fabric properly anymore:

If the fabric is not properly cut by the lock machine,
or the machine pulls the fabric into the machine,
then the knives are probably bone or damaged.
After using often the serger machine, the knives become blunt.
Especially when you use thick and special fabrics.
Often it happens when you accidentally sew on a pin,
even then the machine will no longer cut properly.

Each serger has an upper and lower knife.
Regularly check that the blades are sharp by passing your nail along the knife.
You will feel an unevenness immediately.
To have perfect sewing results, replace regularly new blades in your lock machine.
When changing the blades, make sure that the bottom knife stays just below the needle plate.
The upper blade should fall over the lower blade at the deepest point.

Can I change the knives by myself?

You can easily fix the new lock knives in your machine.
The video below shows you how this works.
Make sure that the lower blade is just slightly below the stitch plate,
and that the upper Blade, falls over the lower blade at the deepest position.

Here you can see a film how you can easily replace the locker blades yourself

Matri Sewing Machines

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Why choose Matri?

  • Reliable quality – Our sewing machines are thoroughly tested and selected for durability, ease of use, and precision.

  • Fast delivery from our own stock – Order today, and in many cases, have it at home tomorrow.

  • Personal advice – Not sure what to choose? Our customer service is happy to offer honest and expert advice, even after your purchase.

  • Fair pricing – No hidden surprises. Just clear prices and often great deals.

Experience since 1929

For over 90 years, Matri has been a trusted name for sewing machines, overlock machines, embroidery machines, and all related accessories. With nearly a century of craftsmanship and practical experience, we know exactly what matters to our customers: user-friendly machines, reliable quality, and excellent service. Whether you’re just starting to sew or looking for an advanced machine for professional use, Matri offers a carefully curated selection, backed by expert advice and fast delivery through our webshop.

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Whether you’re a beginner or have been creating for years, at Matri you’ll find exactly what you need. Order safely, quickly, and with the peace of mind that you’re choosing an online store that truly cares about its customers.

Matri.eu – quality and service for all your sewing, overlock, and embroidery machines, all online.

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Delivery Information

Delivery and ShippingDelivery and Shipping

Free shipping for all orders over € 50,-

Orders under € 50,- costs € 4.95 (Within the EU)

All new Machines and Dress-forms are sent FREE with track-trace code
We ship parts and accessories as standard shipping. This delivery takes longer, see the table below.
(Unless it is specifically stated with a product that it will be shipped later)

  • If your order has been shipped with Track Trace, please check the status of the shipment every day.
  • When ordering, make sure that you fill in everything correctly, address changes are no longer possible after completing the order.

Average delivery time after items leave our warehouse are as follows :

  With track trace code Standard Shipping
The Netherlands 1 to 2 working days 3 to 5 working days
Belgium 1 to 2 working days 3 to 6 working days
France 3 to 5 working days 6 to 12 working days
Germany 1 to 3 working days 3 to 6 working days
United Kingdom 3 to 5 working days 6 to 12 working days
Spain 3 to 5 working days 6 to 12 working days
Italie 3 to 5 working days 6 to 12 working days
Other EU 5 to 7 working days 6 to 15 working days
Outside Europe 15 to 17 working days 15 to 30 working days

Shipping costs outside the EU is € 15,- and outside Europe is € 30,-