When you use a gasoline engine, you maybe encounter the following problems, failed to start, insufficient power, unstable working and engine sudden stall when working. Generally, you can check three parts: 1.ignition system magneto coil, CDI, and spark plug. 2.fuel supply systemgas tank switch, gas line, carburetor, and fuel filter. 3.the engine blockthe wear of cylinder, crankcase, piston, piston ring, bearing, oil seal, crankshaft, etc. Or the wear and destroy of clutch parts.When a gasoline engine breaks down, you should carefully analyze and find out the causes, and timely eliminate it. If you are not sure for the cause, you can check the engine system one by one. 

1.Why us and the advantage of us?Since 1991 we start to design and produce small gasoline engine for bicycle, our factory have more than 20 years experience, and is the pioneer in this field.We abide by strict quality control assurance measures and use the highest quality material so that we can make certain that each of our customers get only the best!2.How long is the delivery time?7-30 working days according to the order and production schedule.3.What packing of bicycle engine kit?A: All complete kit in one cartonB: one box for engine only, one box for gas tank only, one box for other accessories, then three boxes packed in one carton.4.What type engine we have for bicycle installing.-2 stroke 48cc(50cc) and 70cc(66cc/80cc) engine kit for V Frame installing.-Super 2 stroke 70cc(66cc/80cc) engine with internal CDI for V Frame installing.-4 stroke 49cc engine kit for V Frame installing.-4 stroke 33cc engine kit for V frame installing and behind installing. We are now design new transmission case and install tool for this engine.

2013We get patent for our saw blade branch cutting machine. Patent No. ZL2013202770030.We design and develop this machine with Silkworm Breeding and Mulberry Growing Technical Institute.2015We improved our cylinder to be high performance, bigger cooling fin, heavy materials. The performance of engine increased 10%.2017We improved our engine to be M8 bolt for both mount , it will be more strong and stable on your bike. 2018We get patent for a kind of motorized TV lifter. Patent No. ZL2017210576882.