Replacement carburetor for Stihl MS170C / MS180C chainsaws (fits models 017, 018; part numbers 1130 120 0603 and 1130 124 0800) Key benefits Optimizes the fuel–air mixture so the engine burns fuel more efficiently — can improve fuel economy and reduce exhaust emissions. Makes starting easier and stabilizes idle speed for reliable operation after installation. Improves throttle response and acceleration, giving noticeably better engine performance under load. Helps prevent fuel starvation and fuel/oil leakage that can reduce power or cause engine problems. Shock- and vibration-resistant design for dependable performance in demanding outdoor use; compact and portable for easy handling. What this part does Precise metering of fuel and air to restore proper combustion characteristics. Stabilizes engine RPM during idle and load changes for smoother operation. Reduces the chance of uneven running, stalling, and loss of power due to an aging or damaged carburetor. Compatibility and fit Designed to fit Stihl chainsaw models: MS170C, MS180C, and models 017 and 018. Matches part numbers: 1130 120 0603 and 1130 124 0800. Intended as a direct replacement for the listed models; verify model and part number before ordering. Performance and durability Engineered for consistent fuel delivery and reliable performance during repeated starts and varied loads. Built to resist shock and vibration typical of chainsaw operation, helping maintain long-term reliability and portability. Typical use scenarios Replace a worn or damaged carburetor on a Stihl MS180 that is hard to start, idles poorly, or hesitates under throttle. Keep as a spare part for field service or seasonal maintenance to minimize downtime during cutting or trimming jobs. Use during restoration or repair of MS170C/MS180C chainsaws to restore factory-like running behavior and reduce fuel-related issues. Installation and check list Confirm your chainsaw model and part number (017, 018, MS170C, MS180C; 1130 120 0603 or 1130 124 0800) before purchase. Recommend basic carburetor adjustment and a brief operational test after installation to set idle and mixture for optimal performance. Order this replacement carburetor if you need a reliable, vibration-resistant part that restores starting, idle stability, and throttle response on compatible Stihl chainsaws.