Description
Overview:
The Air Adjuster Screw Spring is a genuine OEM Zenith part designed for the 13TC carburettor used on classic JAP engines. Made from durable spring steel, it provides the correct tension on the air (mixture) adjuster screw to keep settings stable during operation. This helps achieve smooth running and reliable starting on vintage small engines, including JAP 2A variants commonly found on older machinery. The spring is engineered for a precise fit in the Zenith 13TC, supporting accurate airflow and fuel mixture adjustment. It is also suitable as a replacement in some Suffolk engine applications that use compatible Zenith carburettors. Built for long service life, it withstands engine vibration, heat, and regular adjustment without losing its resilience.
Key Features:
- Genuine OEM Zenith part for assured fit and function
- Spring steel construction maintains consistent tension and mix stability
- Direct-fit for Zenith 13TC carburettors used on JAP engines
- Supports accurate airflow/mixture adjustment for smooth running
- Robust against vibration, heat, and fuel vapour exposure
- Suitable for JAP 2A and 2S engines; also used on some Suffolk applications
- Simple to install with basic hand tools; no modifications required
- Helps prevent the adjuster screw from drifting out of tune
- Compact, lightweight component ideal for routine carburettor servicing
- May show light storage tarnish typical of vintage stock, without affecting performance
Typical Applications:
Used in servicing and restoring vintage engines fitted with Zenith 13TC carburettors, including JAP 2A and 2S units on mowers, compact plant, pumps, and generators. Ideal for workshop maintenance, tuning, and stabilising mixture settings on classic machinery where precise carburettor control is required.
Also known as:
Carburettor air screw spring, mixture screw spring, mixture adjusting spring, idle mixture spring, adjuster retaining spring, carb adjuster spring, needle spring for air/mixture screw.
Fits Models:
13TC, 2A, 2S, JAP 2, JAP2
Product Specifications
| L&S Part No. | 015458 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Zenith |
| OEM No. | 015458 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | JAP, Zenith |
| Key Features | - Genuine OEM Zenith part for 13TC carburettors - Durable spring steel ensures consistent tension - Direct-fit for JAP 2A and 2S engines - Withstands vibration, heat, and fuel vapour - Suitable for some Suffolk engine applications |
| Fits Models | JAP 2 |
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