---
description: ETA 7750-440 Yoke Spring — Genuine ETA, fits 7750 chronograph. Original factory crown mechanism spring. Made in Switzerland. Brand new.
title: ETA 7750-440 Yoke Spring - Sofly
image: https://www.soflypart.com/wp-content/uploads/2020/07/DSC05709.jpg
---
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- **ETA 7750-440 Yoke Spring**
[](https://www.soflypart.com/wp-content/uploads/2020/07/DSC05709.jpg)
[](https://www.soflypart.com/wp-content/uploads/2020/07/DSC05710.jpg)
# ETA 7750-440 Yoke Spring
$4.00
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| Brand | Choose an option ETA- 
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| --- | --- |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $4.00 |
| 3 - 4 | 5% | $3.80 |
| 5 - 9 | 7% | $3.72 |
| 10 - 14 | 10% | $3.60 |
| 15+ | 15% | $3.40 |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $4.00 |
| 3 - 4 | 5% | $3.80 |
| 5 - 9 | 7% | $3.72 |
| 10 - 14 | 10% | $3.60 |
| 15+ | 15% | $3.40 |
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## Product Description
**Genuine ETA 7750-440 Yoke Spring**, Made in Switzerland, brand new — the **original factory spring component** for the **ETA/Valjoux 7750 chronograph movement’s crown mechanism**. Precisely engineered to **apply constant spring tension to the setting lever yoke**, the yoke spring **keeps the yoke positively engaged with the castle wheel** and **enables smooth crown position selection** between winding and time-setting modes. An **essential replacement part** for restoring faulty or fatigued yoke spring during movement service. **Original ETA part** — the professional’s choice for genuine crown mechanism restoration.
## Features & Function
- **Genuine ETA 7750-440** — original Swiss-made factory part, brand new, authentic, part number 7750-440
- **Yoke spring** — applies spring tension to keep the setting lever yoke positively engaged with the castle wheel
- **Smooth crown position selection** — ensures the crown transitions smoothly between winding and time-setting positions without slipping
- **Reliable crown locking** — maintains consistent spring pressure for positive crown engagement in all positions
- **Original factory quality** — exact spring tension and dimensional specifications for perfect fit in the ETA/Valjoux 7750 movement
## Specifications
| Parameter | Value |
| --- | --- |
| **Brand** | ETA (Swatch Group) |
| **Part Number** | 7750-440 |
| **Component** | Yoke Spring |
| **Compatibility** | ETA/Valjoux 7750 Chronograph Movement |
| **Origin** | Made in Switzerland |
| **Type** | Original Factory Part (Genuine ETA) |
| **Function** | Applies spring tension to the setting lever yoke for crown position selection and castle wheel engagement |
| **Packing** | Original Packing |
| **Condition** | Brand New / Genuine ETA |
## Applications
- Replacement of worn, fatigued, or broken yoke spring in the ETA/Valjoux 7750 movement
- Repair of crown mechanism failures: crown slipping out of position, failure to engage winding or setting mode
- Repair of spring-related issues: inconsistent crown tension, crown not returning to winding position
- Professional movement service, overhaul, and chronograph restoration
- Certified watchmaker and service center parts supply
## FAQ
**Q1: Is this a genuine ETA part?**
A: Yes — this is a **genuine ETA 7750-440 Yoke Spring**, **Made in Switzerland**, brand new. It is an **original factory part** from ETA (Swatch Group), the world’s leading movement manufacturer. Not a generic or replica part.
**Q2: How do I confirm this part fits my movement?**
A: Confirm your movement is an **ETA/Valjoux 7750 chronograph**. The **part number 7750-440** is the specific **yoke spring** for this movement. Common brand applications include: **IWC Portugieser Chronograph, Omega Speedmaster (older 7750 variant), Tag Heuer Monaco, Breitling Navitimer**, and many other chronographs using the Valjoux/ETA 7750 platform.
**Q3: What does the yoke spring do?**
A: The **yoke spring** is a **tiny precision spring** that provides **spring tension to the setting lever yoke**. Its job is to: (1) **Keep the yoke pressed against the castle wheel** — ensuring the crown can always engage the winding mechanism when pushed in. (2) **Provide positive spring pressure** for the crown’s position selection — when the crown is pulled out, the yoke moves into setting position with spring assistance. A worn or broken yoke spring causes: the crown **slipping out of winding position**, **inconsistent engagement**, or **failure to return** to the neutral winding position when released.
## Why Choose SOFLY Watch Parts?
- Fast worldwide shipping within 3 business days.
- Competitive pricing on Seiko/Hattori calibers.
- 3,000+ watch movements and parts in stock.
- Trusted by watchmakers worldwide.
- Personalized sourcing support via **info@soflypart.com** or WhatsApp **+86 18620212114**.
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Precisely engineered to\u00a0apply constant spring tension to the setting lever yoke, the yoke spring\u00a0keeps the yoke positively engaged with the castle wheel\u00a0and\u00a0enables smooth crown position selection\u00a0between winding and time-setting modes. An\u00a0essential replacement part\u00a0for restoring faulty or fatigued yoke spring during movement service.\u00a0Original ETA part\u00a0\u2014 the professional\u2019s choice for genuine crown mechanism restoration. Features & Function Genuine ETA 7750-440\u00a0\u2014 original Swiss-made factory part, brand new, authentic, part number 7750-440 Yoke spring\u00a0\u2014 applies spring tension to keep the setting lever yoke positively engaged with the castle wheel Smooth crown position selection\u00a0\u2014 ensures the crown transitions smoothly between winding and time-setting positions without slipping Reliable crown locking\u00a0\u2014 maintains consistent spring pressure for positive crown engagement in all positions Original factory quality\u00a0\u2014 exact spring tension and dimensional specifications for perfect fit in the ETA/Valjoux 7750 movement Specifications Parameter Value Brand ETA (Swatch Group) Part Number 7750-440 Component Yoke Spring Compatibility ETA/Valjoux 7750 Chronograph Movement Origin Made in Switzerland Type Original Factory Part (Genuine ETA) Function Applies spring tension to the setting lever yoke for crown position selection and castle wheel engagement Packing Original Packing Condition Brand New / Genuine ETA Applications Replacement of worn, fatigued, or broken yoke spring in the ETA/Valjoux 7750 movement Repair of crown mechanism failures: crown slipping out of position, failure to engage winding or setting mode Repair of spring-related issues: inconsistent crown tension, crown not returning to winding position Professional movement service, overhaul, and chronograph restoration Certified watchmaker and service center parts supply FAQ Q1: Is this a genuine ETA part? A: Yes \u2014 this is a\u00a0genuine ETA 7750-440 Yoke Spring,\u00a0Made in Switzerland, brand new. It is an\u00a0original factory part\u00a0from ETA (Swatch Group), the world\u2019s leading movement manufacturer. Not a generic or replica part. Q2: How do I confirm this part fits my movement? A: Confirm your movement is an\u00a0ETA/Valjoux 7750 chronograph. The\u00a0part number 7750-440\u00a0is the specific\u00a0yoke spring\u00a0for this movement. Common brand applications include:\u00a0IWC Portugieser Chronograph, Omega Speedmaster (older 7750 variant), Tag Heuer Monaco, Breitling Navitimer, and many other chronographs using the Valjoux/ETA 7750 platform. Q3: What does the yoke spring do? A: The\u00a0yoke spring\u00a0is a\u00a0tiny precision spring\u00a0that provides\u00a0spring tension to the setting lever yoke. Its job is to: (1)\u00a0Keep the yoke pressed against the castle wheel\u00a0\u2014 ensuring the crown can always engage the winding mechanism when pushed in. (2)\u00a0Provide positive spring pressure\u00a0for the crown\u2019s position selection \u2014 when the crown is pulled out, the yoke moves into setting position with spring assistance. A worn or broken yoke spring causes: the crown\u00a0slipping out of winding position,\u00a0inconsistent engagement, or\u00a0failure to return\u00a0to the neutral winding position when released. Why Choose SOFLY Watch Parts? Fast worldwide shipping within 3 business days. Competitive pricing on Seiko/Hattori calibers. 3,000+ watch movements and parts in stock. Trusted by watchmakers worldwide. Personalized sourcing support via\u00a0info@soflypart.com\u00a0or WhatsApp\u00a0+86 18620212114.","image":"https://www.soflypart.com/wp-content/uploads/2020/07/DSC05709-150x150.jpg","offers":{"@type":"Offer","description":"Product Description Genuine ETA 7750-440 Yoke Spring, Made in Switzerland, brand new \u2014 the\u00a0original factory spring component\u00a0for the\u00a0ETA/Valjoux 7750 chronograph movement\u2019s crown mechanism. Precisely engineered to\u00a0apply constant spring tension to the setting lever yoke, the yoke spring\u00a0keeps the yoke positively engaged with the castle wheel\u00a0and\u00a0enables smooth crown position selection\u00a0between winding and time-setting modes. An\u00a0essential replacement part\u00a0for restoring faulty or fatigued yoke spring during movement service.\u00a0Original ETA part\u00a0\u2014 the professional\u2019s choice for genuine crown mechanism restoration. Features & Function Genuine ETA 7750-440\u00a0\u2014 original Swiss-made factory part, brand new, authentic, part number 7750-440 Yoke spring\u00a0\u2014 applies spring tension to keep the setting lever yoke positively engaged with the castle wheel Smooth crown position selection\u00a0\u2014 ensures the crown transitions smoothly between winding and time-setting positions without slipping Reliable crown locking\u00a0\u2014 maintains consistent spring pressure for positive crown engagement in all positions Original factory quality\u00a0\u2014 exact spring tension and dimensional specifications for perfect fit in the ETA/Valjoux 7750 movement Specifications Parameter Value Brand ETA (Swatch Group) Part Number 7750-440 Component Yoke Spring Compatibility ETA/Valjoux 7750 Chronograph Movement Origin Made in Switzerland Type Original Factory Part (Genuine ETA) Function Applies spring tension to the setting lever yoke for crown position selection and castle wheel engagement Packing Original Packing Condition Brand New / Genuine ETA Applications Replacement of worn, fatigued, or broken yoke spring in the ETA/Valjoux 7750 movement Repair of crown mechanism failures: crown slipping out of position, failure to engage winding or setting mode Repair of spring-related issues: inconsistent crown tension, crown not returning to winding position Professional movement service, overhaul, and chronograph restoration Certified watchmaker and service center parts supply FAQ Q1: Is this a genuine ETA part? A: Yes \u2014 this is a\u00a0genuine ETA 7750-440 Yoke Spring,\u00a0Made in Switzerland, brand new. It is an\u00a0original factory part\u00a0from ETA (Swatch Group), the world\u2019s leading movement manufacturer. Not a generic or replica part. Q2: How do I confirm this part fits my movement? A: Confirm your movement is an\u00a0ETA/Valjoux 7750 chronograph. The\u00a0part number 7750-440\u00a0is the specific\u00a0yoke spring\u00a0for this movement. Common brand applications include:\u00a0IWC Portugieser Chronograph, Omega Speedmaster (older 7750 variant), Tag Heuer Monaco, Breitling Navitimer, and many other chronographs using the Valjoux/ETA 7750 platform. Q3: What does the yoke spring do? A: The\u00a0yoke spring\u00a0is a\u00a0tiny precision spring\u00a0that provides\u00a0spring tension to the setting lever yoke. Its job is to: (1)\u00a0Keep the yoke pressed against the castle wheel\u00a0\u2014 ensuring the crown can always engage the winding mechanism when pushed in. (2)\u00a0Provide positive spring pressure\u00a0for the crown\u2019s position selection \u2014 when the crown is pulled out, the yoke moves into setting position with spring assistance. A worn or broken yoke spring causes: the crown\u00a0slipping out of winding position,\u00a0inconsistent engagement, or\u00a0failure to return\u00a0to the neutral winding position when released. Why Choose SOFLY Watch Parts? Fast worldwide shipping within 3 business days. Competitive pricing on Seiko/Hattori calibers. 3,000+ watch movements and parts in stock. Trusted by watchmakers worldwide. Personalized sourcing support via\u00a0info@soflypart.com\u00a0or WhatsApp\u00a0+86 18620212114.","price":"4","priceCurrency":"USD","availability":"http://schema.org/InStock","itemCondition":"NewCondition","priceValidUntil":"2027-12-31","url":"https://www.soflypart.com/product/eta-7750-440-yoke-spring/?attribute_pa_brand=eta"}}],"@id":"https://www.soflypart.com/product/eta-7750-440-yoke-spring/#richSnippet"}]}
```