TdiriNar Bicycle Engine, 80CC 2-Stroke Gasoline Motorized Bicycle Engine Motor,Black Single Cylinder Petrol Bike Motor Engine with Air-Cooling,Pull Start Motorised Bicycle Cycle Tool (USA) - YYGOOD, zy000333

• This machine is a two-stroke gasoline engine with a clean crankcase. Lubrication of the cylinders and transmission parts in the crankcase depends on the fuel system. Therefore, the fuel used in this machine is a mixture of gasoline and lubricating oil. The gasoline engine adopts a one-piece balanced crank with a stroke of 38mm, which can work more efficiently and stably. The hardware used for mounting bolts on the bike engine is thicker, more powerful, more durable and has a longer service life. Fully assembled 80CC two-stroke engine with single cylinder air-cooled engine head tilt - more clearance and higher compression hardware, but limited to incomplete engine kits. New engines typically require a break-in period of 500 kilometers or more, and damaged cylinders and piston rings need to be renewed. During the break-in period, speeds should not exceed 20km/h and the engine should not be subjected to excessive loads.