This engine has been assembled and can be started by adding methanol to the package upon receipt About this itemALUMINIUM ALLOY: This engine is made with premium materials, including aluminum CNC alloy steel crankshaft, high accurate piston rings, accurate ground cylinder, alloy valves, and high strength timing belt pulley, making it strong, durable, and long lasting.POWERFUL MINIATURE ENGINE: The FS S100AT is a miniature 4 stroke single cylinder engine model that offers powerful and dynamic performance. Its powerful internal mechanism is designed to deliver maximum power with minimal effort.ADJUSTABLE COMPONENTS: This engine features an adjustable carburetor system, adjustable ignition angle flywheel, efficient cooling fan, and a center mounted camshaft design, providing a high performance engine mechanism that is both highly efficient and powerful. What's New About FS-L400BGC? Build an Inline-4 Engine Kits That Works Delight in the art of assembly with precision-manufactured components and step-by-step instructions. Witness the inner workings of an inline four engine and gain a profound understanding of mechanical principles. Realism Beyond Compare Admire the engine's sports-inspired gold design, created to mirror the aesthetics of a real engine. And yes, it runs on real gasoline, bringing authenticity to your experience. How Does 4-Stroke Engine Works? The TOYAN FS-L400BGC engine operates by igniting gasoline, which powers pistons to turn a crankshaft. This rotational motion is harnessed for various applications, such as driving vehicles or generating power. Stability and Speed: Engineered for high-speed operations, our dual oil-seal crankshaft prevents oil leakage while a support bracket enhances performance, achieving a maximum speed of 13500rpm. Performance Upgrade: The valve/camshaft upgrade extends lifespan by 3.5 times, while the high-angle camshaft heightens throttle response for a thrilling ride. Reliability at its Core: Dual synchronous pulleys ensure timing precision even at high speeds, while the redesigned carburetor and intake manifold make engine startup a breeze. Ready for More: An enlarged oil sump allows for future independent lubrication upgrades, so you can take your engine to new heights. Distributor This engine is ignited using a distributor, a distributor ignition system that is relatively simple and reliable. A distributor ignition system is a traditional ignition system used to ignite a gasoline engine and usually includes a distributor, ignition coil, glow plug, and ignition timing mechanism. ONE-KEY-START Use a new starting motor. easy to start.