CISON 20.5cc Miniature Inline Model Four-cylinder Gasoline Engine

Note that this is not a toy. Buyers do not need to have some engine knowledge. There is no manual to provide. This is a special product. Once sold, no refund or return will be accepted for any reason except quality issues. Please consider carefully before buying
Engine parameters
Displacement: 20.5CC micro gasoline engine
Cylinder diameter: 18.5 stroke 18 speed 1500-8000
Configuration 1: Finished engine + 4 spark plugs + radiator + oil tank + base + start switch + fan + radiator water tank
Configuration 2: Finished engine + 4 spark plugs + radiator + oil tank + aluminum alloy base + aluminum alloy bracket + start switch + fan + oil ring + radiator water tank