Description
Overview:
This genuine vintage throttle adjusting screw spring (often referenced as 124/155) is made for the Amal 519 Type carburettor and commonly found on classic machines such as the Villiers F15 and selected BSA models. Manufactured from resilient spring steel, it applies consistent tension to the relevant adjusting screw so your setting stays where you put it. This helps keep throttle response predictable and air/fuel adjustment stable on period engines. Ideal for restorations and maintenance where original specification and feel matter, it replaces tired or missing springs that can cause settings to drift. Supplied as unused old stock, so light tarnish or storage marks may be present without affecting performance. A straightforward, period-correct replacement from the Amal/Villiers range to support reliable running on classic equipment.
Key Features:
- Genuine vintage part (unused old stock) for authenticity
- Correct fit for Amal 519 Type carburettor adjusting screws
- Maintains screw tension to prevent settings from drifting
- Supports stable running and predictable throttle control
- Durable spring steel construction resists fatigue and collapse
- Simple to fit and remove with basic hand tools
- Suitable for Villiers F15 and many BSA machines using Amal 519
- Period-correct appearance for restoration work
Typical Applications:
Used on vintage motorcycles, stationary engines, and small machinery fitted with Amal 519 Type carburettors. Common in restoration projects to return original function, and in routine servicing to replace weak or lost springs that affect idle quality, response, and air setting stability. Suitable for workshop repairs and home DIY maintenance on classic engines.
Also known as:
Slow-running screw spring, adjustment screw tension spring, throttle set-screw spring, carburettor screw spring, control screw spring.
Fits Models:
Amal 519 Type
Villiers F15
BSA
Product Specifications
| L&S Part No. | 124/155 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Amal |
| OEM No. | 124/155 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | Amal, Villiers |
| Key Features | - Genuine vintage part for Amal 519 Type carburettor - Correct fit for Villiers F15 and BSA models - Maintains screw tension to prevent settings drift - Durable spring steel construction resists fatigue - Suitable for vintage motorcycles and small machinery |
| Fits Models | F15 |
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