Patent ID: 7398747

Claim:
An engine-driven work machine connected to and driven by an engine, comprising: a duct member disposed around outer peripheries of the engine and the work machine to define a continuous cooling-air passage between the duct member and the outer peripheries; a cooling fan disposed in the cooling-air passage and which generates a flow of cool air from one end of the cooling-air passage to the other end during operation of the engine, an exhaust muffler of the engine disposed in the vicinity of the other end of the cooling-air passage, wherein the exhaust muffler is cooled by the cooling air flowing out of the cooling-air passage; and an air guide plate connected to the duct member is suspended from an upper portion of the duct member and covers an upper portion of one side face of the exhaust muffler which is opposite the cooling-air passage, wherein the air guide plate guides the cooling air flowing out of the cooling-air passage downward along the one side face of the exhaust muffler.