Cooling-fan for an air-cooled engine

摘要

A cooling fan 2 made of synthetic resin for an air-cooled engine which is fixedly secured to a side of the body 1 of a flywheel includes a plurality of cooling fins 2b formed along a circumferencial direction thereof, and a circular reinforcement rib 2a projecting axially from the periphery of a backboard 2f, thereby reducing deformation of the fan during running of the engine and preventing deformation of the fan during transportation, without significantly increasing the weight of the fan.