Join Date: Feb 2007
Location: Pacific Northwest, USA
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my yamaha 8h has a fresh water flush attachment already built in that allows you to flush the system after using the engine while it is turned off. Your manually should clue you in on if you have one and how to use it.
You can view the manuals online at the yamaha website.
Last edited by tenuki; 08-17-2007 at 03:03 PM.