Carburetor for STIHL petrol chainsaws of the MS640, MS650 and MS660 series--BIEMMEDUE

Is your large-displacement STIHL chainsaw hard to start, idling roughly, accelerating poorly, consuming unusually high fuel, or emitting black/white smoke? This is likely due to a blocked fuel line in the carburetor, a worn diaphragm, or incorrect adjustment. This high-quality carburetor is specifically designed for the STIHL MS640, MS650, MS660, and other large-displacement chainsaw models and will restore your machine's performance and stability. How the carburetor works: The carburetor is the central component of a two-stroke gasoline engine. It ensures a precise air-fuel mixture, adjusted to engine speed and load, and delivers it to the cylinder for combustion. Its proper function directly affects the engine's starting behavior, performance, fuel consumption, and emissions. Key features: Reliable fuel supply under all conditions: Thanks to its diaphragm and integrated fuel pump, it ensures a reliable fuel supply regardless of the chainsaw's position, even when tilted or overhead. This carburetor meets the demands of forestry professionals. Precision metering system: The high-precision jet diameters of key components, such as the internal main jet and the idle jet, ensure precise air-fuel mixture concentration and complete combustion across the entire RPM range. Corrosion-resistant aluminum body: The carburetor body is made of high-quality, corrosion-resistant die-cast aluminum alloy. It is resistant to fuel corrosion, provides excellent heat dissipation, and prevents deformation during extended use. Needle adjustment: Equipped with three adjustable needles for high RPM (H), low RPM (L), and idle (T/LA), this carburetor allows for precise tuning to account for seasonal variations, altitude, and fuel quality to optimize engine performance. Transparent filter (on some models): A transparent filter is integrated into the fuel intake for easy fuel purity checks and removal for cleaning. Specifications: Part name: Carburetor assembly / Compatible carburetor models: STIHL 064, STIHL 066, STIHL MS640, STIHL MS650, STIHL MS660, STIHL 084 (Partially compatible, please check interface), STIHL MS880 (Partially compatible, please check interface)