Description
Overview:
The Spring for Adjustment Needle is a genuine Zenith OEM component for the Zenith 13TC carburettor, commonly fitted to JAP engines. Made from durable metal, this precision coil spring provides the correct tension on the carburettor's adjustment (mixture) needle, helping to hold settings steady under vibration and heat. By maintaining consistent needle pressure, it supports reliable fueling, smooth idling and cleaner running across the rev range. Supplied as new old stock (NOS), part number 09846, it offers authentic fit and function for restoration or routine maintenance. It is suitable for vintage applications where a Zenith 13TC carburettor is used, including certain JAP 2 series engines. A straightforward like-for-like replacement, it helps extend carburettor service life and improve day-to-day usability.
Key Features:
- Genuine Zenith OEM spring (part no. 09846) for assured compatibility and quality
- Provides precise needle tension to keep mixture settings stable during operation
- Durable metal construction to withstand engine heat, fuel exposure and vibration
- Correct fit for Zenith 13TC carburettors used on many JAP engines
- Helps prevent mixture "drift", improving throttle response and idle stability
- Simple to install as a direct replacement for worn, weakened or missing springs
- Ideal for vintage engine restoration and ongoing maintenance tasks
- New old stock: may show light tarnishing that does not affect performance
- Supports long service life of the carburettor by maintaining proper adjustment
Typical Applications:
Used during carburettor servicing or rebuilds on JAP-powered machinery fitted with the Zenith 13TC carburettor, such as stationary engines, pumps, generators and horticultural equipment, including certain Suffolk lawn mowers. Replace when the mixture screw will not hold its setting, the spring is damaged or missing, or after a full carburettor clean and reassembly.
Also known as:
Carburettor needle spring, mixture screw spring, adjustment screw spring, jet needle spring, metering needle spring, mixture control spring, carb spring for Zenith 13TC.
Fits Models:
13TC, JAP 2, JAP 2A, JAP 2S, Suffolk
Product Specifications
| L&S Part No. | 09846 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Zenith |
| OEM No. | 09846 |
| Unit of Sale | 1 |
| Applications | 13TC, JAP 2, JAP 2A, JAP 2S, JAP2, JAP2A, JAP2S, Suffolk |
| Machine Type | Engines |
| Fits Brands | JAP, Zenith |
| Fits Models | JAP 2 |
