Carburionix Carburetor Kit for Stihl FS 94 / KM94 (Zama RC2 S243 new-style) — complete rebuild parts

The Carburionix HL94 / FS94 carburetor kit is a complete replacement set designed to restore fuel delivery and reliable starting for Stihl FS 94 and compatible KM94/HL94 brushcutters using the Zama RC2 S243 new-style carburetor.

This kit bundles all the small parts you need to replace a worn or damaged Zama RC2 S243 carburetor on specific Stihl models (new style only). It includes gaskets, diaphragms, needles, springs and other components shown in the product photos so you get proper fit and function without buying individual pieces. The kit is sold as shown in the first image; confirm your existing carburetor matches the new-style Zama RC2 S243 before ordering.

Which Stihl models and part numbers is this kit compatible with?

This Carburionix kit replaces Zama RC2 S243 carburetors used on a range of Stihl trimmers and brushcutters. It aligns to OEM replace part numbers 4149-120-0602, 4149 120 0602 and 41491200602 and is intended for the new-style carburetor only.

• Compatible models: FS 94 RC-E Z, FS 94 R-Z, FS 94-Z and KM 94 variants.
• Also fits HL and SP series listed: HL 91, HL 92, HL 94, SP 92 variants where RC2 S243 is used.
• Not intended for older or different carburetor styles—verify your carb body matches Zama RC2 S243 new style.

What parts are included and how comprehensive is the kit?

The kit provides a full set of wear parts to rebuild or refresh a Zama RC2 S243 carburetor so you avoid piecing together separate components. You receive the components pictured in the first product photo; visually compare them to your current carburetor to ensure compatibility.

• Gaskets and diaphragms to reseal the carburetor chambers and improve fuel metering.
• Needle valve, springs and small internal parts that control flow and choke function.
• Additional small hardware and seals to replace perished or brittle factory parts.

How will installing this kit affect engine performance and maintenance?

Replacing aged diaphragms, needles and gaskets restores proper fuel metering, which helps the engine start more reliably and run with steadier throttle response. While this kit does not guarantee performance beyond original factory tolerances, it addresses common carburetor-related problems caused by wear or ethanol fuel damage.

• Smoother idling and reduced stalling if fuel flow was restricted by damaged parts.
• Improved starting when the choke and needle function are restored.
• Prevents fuel leaks and perishing that lead to poor running and higher emissions.

How should I verify fit and install the kit safely?

Before purchasing, compare your carburetor to the Zama RC2 S243 new-style shown in the listing images and confirm your Stihl model is in the compatible list. Installation requires basic small-engine repair tools and careful reassembly to avoid vacuum leaks—replace parts in the same orientation, and use clean, fresh fuel when testing.

• Inspect your current carburetor style and part numbers against the listing photos.
• Follow a step-by-step rebuild guide or service manual for torque and adjustment specs.
• Test in a well-ventilated area and adjust idle and mixture per manufacturer recommendations.

Who is this for: This Carburionix carburetor kit is for owners, mechanics and small-engine technicians who own compatible Stihl FS, HL, KM or SP models with the Zama RC2 S243 new-style carburetor and need a complete set of replacement internals. It is ideal when diaphragms, needles or gaskets have degraded, when the engine stalls or runs poorly, or when you prefer a full rebuild kit rather than sourcing parts individually. If you're uncertain about fit, compare your carburetor to the photos or contact customer service for help before ordering.