Kent, thanks for your response, yes, it is a
Yanmar 110 4JH4HTE, I know it may be a little too much but we were offered this by Yanmar in Venezuela, they only had two engines and it was an exceptionally good price.By the way, no one in Yanmar we contacted could answser our questions either on isolation issues nor freewheeling of the transmission. The US people would not talk to us because the boat was not in the USA.
In any case, obviously, our installation in not isolated and would not know what to do from this point. It seems pretty complicated, especially because of the lack of information on the subject and lack of parts and lack of cooperation from the manufacturer. So on our boat, now ground is also negative. Unfortunately until we solve this issue.
Alex
