Patent ID: 6875069

Claim:
An air-intake system of a multi-cylinder engine of a small watercraft, comprising: a plurality of air-intake pipes respectively provided for cylinders, the air-intake pipes having first opening end portions respectively connected to a plurality of air-intake ports of a cylinder head; and an air-intake box to which second opening end portions of the air-intake pipes are connected, wherein the air-intake box is placed laterally of the engine and has a bottom portion located lower than a center axis of a crankshaft of the engine, and wherein the air-intake pipes extend from the air-intake ports to an inside of the air-intake box and the second opening end portions open inside the air-intake box at a position spaced apart a predetermined distance from an inner bottom face of the bottom portion of the air intake box, and the air-intake pipes are arranged such that a distance between respective central axes of the second opening end portions is smaller than a distance between respective central axes of the first opening end portions.