That setup suggests less mass within the cylinder head and diminished body weight for the general outboard. Concurrently, 4 valves for every cylinder implies good motor combustion, which contributes to horsepower, torque and gasoline performance. Brief Acceleration A TCI microcomputer ignition adjusts timing to keep up ideal engine functionality, overall https://yamaha4strokeoutboardmoto20753.tinyblogging.com/yamaha-25hp-outboard-for-sale-things-to-know-before-you-buy-79245144