High-quality metal replacement carburetor kit (C1Q-S66) compatible with a wide range of STIHL equipment. Designed to restore reliable engine performance by delivering a precise fuel-air mix. Key benefits Reliable starting and smooth running: Precisely mixes fuel and air to help engines start quickly and run smoothly at idle and under load. Improved throttle response: Stable operation and faster acceleration for more consistent power when cutting or trimming. Durable construction: Made from high-quality metal for strength, hardness, and a long service life. Fuel and energy efficiency: Optimized mixing helps reduce wasted fuel and improves overall operating efficiency. Direct fit for listed models: Replaces the original carburetor on the specified STIHL models to simplify maintenance and reduce downtime. Features and important attributes Function: Carburetor kit that controls fuel-air ratio for combustion engines. Material: High-quality metal construction for durability and resistance to wear. Performance: Stable idle, quick throttle response, smooth engine operation, and reliable starting. Part number: C1Q-S66 carburetor kit — confirm this part number against your machine before ordering. Compatibility Designed for use with the following STIHL models: HS 72, HS 74, HS 76, HS 75, HS 80, HS 85 FS 72, FS 74, FS 76, FS 75, FS 80, FS 80R, FS 85 FC 75, FC 85 HL 75 HT 70, HT 75 KM 85 Suitable applications and use scenarios Hedge trimming: Replace a worn carburetor on an HS or HL hedge trimmer to restore smooth idle and consistent cutting power. Brushcutting and grass trimming: Fit the carburetor kit to FS or FC trimmers and brushcutters to regain quick acceleration and reliable performance when cutting dense vegetation. Multi-tool and maintenance equipment: Use as a direct replacement on KM and HT models or other small engines with matching part number to reduce fuel consumption and avoid surging or stalling. Notes for buyers Verify your tool model and the carburetor part number (C1Q-S66) before purchase to ensure compatibility. Professional installation is recommended if you are not experienced with small-engine carburetor replacement.