On Apr 6, 9:17 am, "James" wrote:
I'm looking for a site that has information on these two engines. I'm
about to acquire one not sure if it's QM or GM. Is raw water cooled
would like to possibly convert it to fresh water cooling.

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Call the yanmar rep and get the mechanics man for the engine you
recive. and either buy the tool kit with the spcail tools or find a
local repaire place that will let you copy the tools they have. Yan
mars can be bloody touchy but the manual can let you rebuild almost
the entire engine.