Boating Tips

Yamaha Freshwater Flush Video Helps Boater’s Protect Outboards

Posted 6/26/2013

Freshwater flushing is one of the simplest and most important maintenance procedures a boater should perform to protect an outboard from corrosion. Earlier this spring, Yamaha published a detailed Boater’s Logcovering the three recommended methods for freshwater flushing. As a compliment to that article, Yamaha also recently released an instructional freshwater flush videoon YouTube® that visually walks viewers through each method.

Why Freshwater Flushing is Important 
During the course of normal use, an outboard’s water pump can ingest mud, sand, and silt, which then flows through the engine. Marine growth can also occur behind the inlet screens interrupting the flow of water to the engine. Over time, debris can accumulate in the outboard’s cooling passages. This build up can damage the water pump’s rubber impeller and plastic housing. The buildup can also restrict the amount of water available to the engine resulting in poor cooling, which will damage the engine. It may even promote corrosion in the exhaust system because increased engine temperatures—along with the effects of using ethanol-blended fuels—can cause increased exhaust temperatures. 

Freshwater Flushing Fast Facts 
An outboard should be flushed after every use in salt or dirty water. Freshwater flushing with clean water will dislodge most contaminants (sand, silt, mud, etc.) and force them out of the passages in the cooling system. Perhaps even more importantly, flushing removes salt buildup, which can lead to poor cooling as well as corrosion of the engine block and midsection. Generically speaking, there are three methods to flush an outboard: a flush bag, flush muffs or the freshwater flushing attachment built into the outboard.

For more information, click hereto watch the new Yamaha Freshwater Flush Video, or click hereto read the Yamaha Boater’s Log covering Freshwater Flushing