Question about Yamaha Boating
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The ecm monitors the combustion quality and adjusts the timing following the results.
It works with "ionic combustion sensors" - adapted for the first time on an outboard. They monitor combustion conditions by detecting the production of ions in the flame. The ECM adjusts the ignition timing based on the ion density to improve combustion.
Posted on Nov 15, 2017
manuals are freely available on the yamaha website
Posted on May 28, 2015
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