1. This mechanical carburetor is specifically designed for certain vehicle models, such as C1Q - S174, STIHL FS87, FS90, FS100, FS110, HT100, and KM90, with good matching applicability. 2. In terms of design, it has been carefully considered and can be perfectly adapted to compatible vehicle models to ensure stable engine operation. Its structural design is unique, and for specific details, you can consult the shop owner. This unique design is undoubtedly to better meet the vehicle's usage requirements under different working conditions. 3. In terms of use, it plays an important role during vehicle operation. In the idle state, it can provide precise fuel supply for the engine to ensure stable idling; during the acceleration process, it can respond quickly and timely deliver an appropriate amount of fuel to the engine to ensure smooth vehicle acceleration. At the same time, it also has an important impact on fuel consumption per 100 kilometers. For specific fuel - consumption data, you can consult the shop owner. However, it is certain that the reasonable design helps optimize fuel - use efficiency and makes the vehicle more energy - efficient during operation. 4. Whether for daily driving or high - intensity vehicle operations, this mechanical carburetor can provide reliable fuel - supply support for the vehicle with its excellent design and performance. It is an ideal choice for vehicle repair and upgrade.