What is this?

[Tex]

Hi All,

    What is this hex nut? The engine is always a little wet here.  She does not leak any large amounts but she always has oil there. Easy fix I hope.

[racerrad8]

Oil filter galley plug.

It could be as easy as an o-ring replacement or the plug could be cracked, which still isn't hard.

Here is the oil galley o-ring

If you find the plug is cracked, let me know.

Randy - RPM

[Tex]

Randy do you have diameters on that. I would like to get it done this weekend. I would just order it from you but it takes 4-5 days to get to me. I may have one at my shop. When I pull this out will oil leak out?  Thanks

Scott

[racerrad8]

I don't, I just order them from Yamaha as they are metric and the fractional o-rings are either too small or too thick resulting in them getting cut and either way they leak.

Shipping is three days across the US, so Texas should be two.

Randy - RPM

[FJ_Hooligan]

I had that same leak and was able to match the o-ring up with one from the local hardware store. 

Worth a try.