whining noise from lower end?

[bcurto]

sounds like i have a wining noise comming from the lower end on my 03 400ex..any ideas what this could be...seems to be loudes when first started...

[mudder67]

From what I've heard a lot of people has had this problem. Just a unique sound a 400ex makes.

[TheAwesomehonda]

I've got that to but mine is only when i first start it.. No idea what causes it.

[Zakradu398]

Mine does this too when idling only.

[ridein'red7]

My 02 did it, until I replaced the clutch basket