I am currently experiencing the frustrations of gleening advice about my SD10 problem from the supplier of my two Nanni 21hp Saildrives.
I built our schionning Wilderness 1100 over a ten year period from 2003, launching in October 2013. I bought the Nanni engines with SD 10 Saildrives in 2007 as I had to set up the engine beds before completing the top sides, interior
and the rest of the boat. All the information/colour glossy ''Manuel d'Instruction' specified ATF only as well as the plate on the Saildrive itself. The Saildrive that failed in both forward and reverse has 491.4 hours. Regretably I was never informed to change over to SAE 15W40 and so to this day was still running ATF.
As an aside, I was fortunate the the failure occurred at Mackay Marina when attempting to reverse into a pen. The boat just kept going straight ahead when I was attempting a reverse park. Good thing the Marina attendant Cameron was there as he was able to push me off from banging into nearest cat. I finally secured the boat and here it is,...still in the same spot waiting to get some info about repairs
. Originally I thought the prop had fallen off!
I have since changed the oil to SAE15W40 with no joy. Looked at the prop,...it is still there, checked linkages,...all OK a and ran engine to see of it was a prop failure (thanks to Forum Members).
I am now resigned to the fact that (99.99%) that I am going to have to look at the clutches and am waiting for the Nanni Rep to get back to me about effecting a repair.
In the meantime, does anyone have the repair procedure for replacing the clutches? Can the repair be undertaken in situ (seems so) and can you acquire a replacement clutch assembly or is it best to change the whole top end? Does anyone know what Nannis position is on this type of failure which was obviously aggravated by the constant use of ATF?
I see where Nanni came to the party during one thread.
Any comments or advice appreciated.