Flush the cooling system: Regularly flush your outboard motor’s cooling system, particularly if you often use it in saltwater, which might cause corrosion while in the cooling procedure.
From seasonal outboard motor https://rafaelhzyz973600.daneblogger.com/29210980/how-much-you-need-to-expect-you-ll-pay-for-a-good-yamaha-outboard-motor-for-sale