By entering your email address you conform to receive marketing and advertising messages from Yamaha Outboards. Chances are you'll unsubscribe Anytime. An optimally well balanced crankshaft and labyrinth exhaust supply clean electricity, although Microcomputer Ignition adjusts timing to maintain maximum motor effectiveness, financial system and electrical power below all conditions. https://onboardengine.shop/product-category/150-outboard-for-sale/