That setup indicates a lot less mass during the cylinder head and decreased bodyweight for the overall outboard. Simultaneously, 4 valves for every cylinder usually means great engine combustion, which contributes to horsepower, torque and fuel performance. Brief Acceleration That’s lots of electrical electrical power for battery charging and equipment, https://yamaha4strokeoutboardmoto20753.tinyblogging.com/yamaha-25hp-outboard-for-sale-things-to-know-before-you-buy-79245144