60 Hp Bigfoot 4 Stroke Squeak

[mr_gecko]

I have a 2004 60 hp Mercury Bigfoot 4 stroke that seem to have developed a squeaking sound right around 1800 to 2700 RPMs. Its not real loud but noticeable. Don't hear it at idle or in the higher rpm range. It seems to run fine with no misses or surging. The noise sounds like the belt, but it seems to be ok. Any suggestions on what may be causing it?

Thx

[boats.net]

Might need to remove lower unit and grease upper portion of drive shaft(splines and about an inch below splines) and grease drive shaft where it goes through bushing in mid housing.