Juki Upper Knife Blade A4142335000 — Genuine Replacement for MO-600 Series Overlockers
Restore clean, precise fabric cutting with this Juki Upper Knife Blade (Part No. A4142335000), the correct OEM-specification replacement blade for the Juki MO-600 series overlock/serger machines. When your overlocker starts producing frayed edges, uneven fabric feeding, or skipped cuts, a worn upper knife is typically the culprit — this blade returns your machine to factory-fresh cutting performance.
Suitable for home sewers, dressmakers, and garment production facilities relying on Juki MO-600 series machines for everyday overlocking and serging work.
Key Features
- ✅ Part Number: A4142335000
- ✅ Upper knife blade for clean, precise fabric trimming
- ✅ OEM-specification — exact fit, no modification required
- ✅ Restores even fabric feeding and clean cut edges
- ✅ Compatible with multiple Juki MO-600 series models
- ✅ Easy DIY replacement — no specialist tools needed
Compatible Models
- Juki MO-623
- Juki MO-644D
- Juki MO-654DE
- Juki MO-655D
When to Replace Your Upper Knife
- Fabric edges are frayed or not cleanly cut
- Uneven or dragging fabric feeding
- Visible nicks, chips, or dullness on the blade edge
- Looper thread breaking frequently during overlocking
Package Includes
- 1 × Juki Upper Knife Blade (A4142335000)
Frequently Asked Questions
Does this fit all MO-600 series models?
This blade is confirmed to fit the MO-623, MO-644D, MO-654DE, and MO-655D. Please verify your model number before ordering.
Do I need to replace both upper and lower knife together?
For best cutting results, it is recommended to replace both the upper and lower knife blades at the same time. We stock the lower knife blade separately.
