to be honest with you, I don't think I have every run across a comercial rated Yamaha. ALl the law enforcement around here run Salt Water Series. There may have been some non oil injected ones that were continuations of the Yamaha/Mariner engines, but I haven't seen one. People around here believe no fault in yamaha engines, if you ask most of them, they will tell they never break and you don't have to work on them. They get a bit nervious when I get the rosebud out to change a water pump. The japanese engines have better paint, but they corrode inside worse than the american motors.
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