Yanmar Gearbox Whine

[Dave47]

I've got this whine when motoring in forward gear which is not audible in reverse. Ive had the boat for 3 years and the whine has always been there although I think it is getting louder(maybe just imagination). The engine is a 2GM20 which runs fine. Servicing has been done each year. Anyone any ideas or similar simptoms?

 

[colvic987]

go and post in reader to reader or motor boat forum, dont think you are going to get a reply in this forum, which is for red diesel...