Description
Overview:
This is a genuine Villiers choke return spring for the B1016 carburettor, OEM No. 29777. It is designed to return the choke flap positively after starting, helping the engine settle to a clean idle and preventing over‐rich running. Made from durable, hardened spring steel, it is built to withstand repeated cycling and the demands of industrial use. The spring fits Villiers 125cc and 150cc vertical‐shaft four‐stroke engines, including Type 512V and 515V units commonly found on compact industrial and garden machinery. A direct, like‐for‐like replacement for the original B1016 component, it restores correct choke action with reliable tension and feel. This is unused old stock and may show light tarnishing or storage marks, but function and fit are as intended. Genuine Part.
Key Features:
- Genuine Villiers OEM replacement (29777) for the B1016 carburettor
- Restores correct choke return for easier cold starts and smoother running
- Spring steel construction resists fatigue and deformation over time
- Accurate fitment for 125cc and 150cc Villiers vertical‐shaft engines (Types 512V/515V)
- Direct swap for the original part; no modifications typically required
- Consistent, repeatable return force for dependable operation
- Helps prevent rich running, plug fouling, and unnecessary fuel use
- Compact, precisely wound coil for stable performance in service
- Supplied as unused old stock; cosmetic ageing does not affect function
Typical Applications:
Used on Villiers 125cc and 150cc industrial engines fitted with the B1016 carburettor in small plant and garden equipment. Suitable for engines powering light machinery where reliable cold starting and steady warm running are required, such as stationary or portable equipment in workshops, site use, estates, and grounds maintenance.
Also known as:
B1016 return spring, carb return coil, 29777 spring, air shutter return spring, starting flap spring, B1016 coil spring, enrichment flap return coil, Villiers 29777 return coil.
Fits Models:
125/150CC, B1016
Product Specifications
| L&S Part No. | 29777 |
|---|---|
| Part Type | Genuine Part |
| Unit of Sale | 1 |
| Applications | 125/150CC, B1016 |
| Machine Type | Engines |
| Fits Brands | Villiers |
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