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The Omega 8500 Movement Stop Lever (7228500A56070) is a genuine Swiss-made component for the Omega Caliber 8500 Co-Axial automatic movement. This stop lever (also referred to as “stop lever” or “stophebel”) is used within the keyless works to control the winding stem positions (positions I, II, and III), ensuring correct engagement between the crown and the winding/setting mechanisms during normal operation and time adjustment .
Genuine Omega part – authentic Swiss-made component for Caliber 8500A, 8500B, and 8500G versions
Keyless works component – controls the winding stem positions for winding, date-setting, and time-setting modes
Works with the combined setting lever jumper – ensures smooth and precise crown operation
Precision-engineered – manufactured to Omega’s factory specifications
Direct replacement – designed for professional servicing and restoration
Part Number: 7228500A56070
Compatible Movement: Omega Caliber 8500A, 8500B, 8500G
Movement Diameter: 29.00 mm (12¾”’)
Movement Height: 5.5 mm
Jewels: 39
Frequency: 25,200 vph (3.5 Hz)
Power Reserve: 60 hours (two series-coupled barrels)
Origin: Switzerland (Omega factory part)
Condition: Brand new
Service and overhaul of Omega Caliber 8500A/B/G movements
Keyless works repair – replacing worn or damaged stop levers
Restoration of De Ville Hour Vision, Seamaster Aqua Terra, and other 8500-powered models
Suitable for professional watchmakers and authorized service centers
1. Is this a genuine Omega part?
Yes, this is a genuine Omega factory part (reference 7228500A56070), manufactured in Switzerland. It is listed in the official Omega 8500 spare parts list under “Stop lever” and is not an aftermarket component .
2. Which movement versions is this stop lever compatible with?
This stop lever is listed for Omega Caliber 8500A, 8500B, and 8500G versions. Please verify your movement version before ordering .
3. What is the function of the stop lever?
The stop lever is part of the keyless works that controls the engagement of the winding stem in different positions. When the crown is pulled to different positions, the stop lever works with the setting lever jumper to enable smooth switching between winding (position I), date correction (position II), and time-setting (position III) modes .
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