Mercury Outboard Boat

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Bob grubb's virtual Outboard Motor museum

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1920 Koban Model H

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3 hp @ 900 RPM  Ser.# 20831
 
This company was a pioneer in  2 cylinder opposed design outboards.  They made the ridiculous claim that this made them absolutely vibrationless.  This model is equipped with a flywheel magneto.  I acquired it from an old gent in my area in 1984.  He said he last ran it 45 years before.  It turned stiffly.  I found a piston and connecting rod installed wrong.  After doing other minor repairs as needed, I first ran it in 2005 and again in 2009.
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