cam chain adjuster plug

[jamak]

I know I saw a post about this on here, but I couldn't find it. Pardon the repetition.
What is the deal with this plug? What is it made out of? What I have appears to be metal, with some sort of hole in the middle. I can't make out an allen or torx head on it, and there is always a drop of oil hanging in the AM when I go to start it. It's hard to tell if it leaks all the time because of all the gunk on the motor, but you have to guess that it is.
I can't see this as being the source of my oil mystery, but it's making a mess of my pipes.
I tried to goop it with Permatex after I cleaned it off, but no go on that.
What's my best bet? Thanks.

[bikerphil]

The P/N for the correct plug is 90338-14004-00. Yamaha dealer carries them for a couple of bucks. Don't forget that the o-ring and base gasket can leak also. Try the plug first.

[bikerphil]

Ok, here's the front view of the cam chain tensioner, with the plug removed sitting off to the side.



Here's where the o ring is, under the lock nut on the side.



If you just clean out the front part of the tensioner, you can either get the correct cap for it, or put a glob of RTV over it to keep it from dripping.