Tohatsu 90 (2-str) whine
Got a new (had been lying in stock since end of 06) Tohatsu 90 2-st at the start of the year. I noticied after a few hours that there was a distinct "whine" to it, especially around the 4000 rpm mark. Sounds like the whine you get off a turbo. I reported this to Tohatsu who took it back and effectively re-built the engine but the whine is still there... Tohatsu have put it down to noise from air intake ports but I'm not convinced!
So any of you Tohatsu 90 owners out there got this problem? It seems to vanish above about 4300 but is really quite bad in the 3800 to 4100 rpm range. There is one speed where it's actually uncomfortable to listen to!
I can't run it with the cover off as every time I come off the plane (no matter how slowly I do it), there is a chunk of water gets thrown onto the back of the case (turning at the right moment doesn't help either)!