Join Date: Jun 2011
Location: Southern Chesapeake Bay
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Yanmar SD20 Fails To Shift Into Reverse
Well, sometimes it does, sometimes it doesn't. Which makes docking interesting. I've experienced no reverse, and then trying moments later, reverse would engage
I wondered if this might happen more when the engine (transmission, really) is hot, so on our last return to the dock (and I have a particularly difficult-to-access berth) I made sure to not run this port engine (on a cat) until I arrived. Shifted fine, but who knows next time.
I had checked to make sure that the shift linkage was working properly externally, and everything looked fine, while I was watching anyway. So it seems the problem is inside the transmission. SD20 has dog clutches rather than the cone clutches of other models, which I understand have more problems.
Has anyone else had a problem of this nature? If so, what was the solution?