AUTOKAY FS55/FS55R/FS45 Carburetor for STIHL Trimmers – Fits FS38, FS46, FS55, FS45, More

Enhance STIHL trimmer reliability with the AUTOKAY carburetor kit

When your STIHL trimmer needs a refresh, the AUTOKAY FS55, FS55R, and FS45 carburetor kit offers a practical, ready-to-install solution. This kit is designed to replace worn components and restore smoother idle and responsive throttle behavior. The build emphasizes consistent fuel delivery, clean air flow, and durable construction, helping your tool start more easily and run more steadily through demanding tasks.

What this kit includes and why it matters

The package contains a complete set of parts to support a full carburetor rebuild, so you can perform a thorough refresh without sourcing individual components. The included pieces mirror the essentials STIHL operators expect for reliable performance in the field.

• 1 x Carburetor
• 1 x Fuel Filter
• 1 x Fuel Line
• 2 x Primer Bulbs
• 1 x Air Filter
• 1 x Spark Plug
• 2 x Gasket
• 1 x Pre Filter
• 1 x Air Filter Cover

Compatibility and fit

The AUTOKAY kit is designed to replace STIHL components such as C1Q-S97 and C1Q-S186, among others, and it targets multiple popular models including FS38, FS45, FS46, FS55, and related variants. If you’re maintaining a compatible trimmer or brush cutter, this kit can streamline the rebuild process by providing commonly used parts in one package.

• Replaces key carb numbers and fits a broad range of STIHL trims
• Designed to support consistent fuel flow and air handling
• Includes essential seals and filters for a thorough rebuild

Real-world use cases

Use this kit when you notice hard starts, erratic idle, or fluctuating RPMs on STIHL trimmers. It’s well suited for seasonal maintenance, field repairs, or shop refurbishments, offering a practical way to refresh critical components and extend tool life.

With the included air filter, spark plug, and gasket set, you can refresh the engine’s intake and sealing surfaces, contributing to a cleaner combustion process and steadier operation. While not a guarantee of performance, a complete rebuild often contributes to smoother operation during typical trimming tasks.

Installation tips

For best results, follow your trimmer’s service guidance and ensure the model matches the kit’s compatibility. Lay out all parts before beginning, verify correct gasket orientation, and replace fuel lines and primer bulbs as a single maintenance step to minimize air leaks.