Tranny Maintenance

[PlanetDan]

The post below on tranny rebuilds got me to post my question.

My Yanmar 4jh2-TE engine has approx 2800 hours. There's a steady sound coming from the transmission (whine? hum? tone? -- something like that). I haven't had the boat too long, and I don't know if that's normal or not. I assumed the transmission would be virtually silent, but perhaps this is normal.

Is this normal? How can I determine if the transmission needs work? What sort of maintenance is required for the transmission?

Any help is appreciated.

[r.furborough]

drive trains are not necessarily quiet, you can get noise from the transmission, the cutless bearing, the propeller etc. It is a characteristic you get to know about a particular boat. Give it time and get to know your boat...