Ok, so while trying to diagnose my whine/whistle noise I decided to take off the muffler to see if the noise remained if I took off the muffler from the head pipe. While doing that I figured why not just drain the oil and check the cam chain tensioner. It was at 13.85 from the markings on the picture (hopefully that works).
now the bike as less the 4k miles on it. (im starting to think maybe thats shenanigans). and I might as well replace this piece since I got this thing open.
I've read that 20mm is where you want to really draw the line on these things, but should I ride out some more or just replace now. Getting to it wasnt as difficult as I thought it was going to be, so redoing it isnt going to just kill me.
Also does anyone have any tips for getting the muffler off the head pipe? I removed the clamp bolt (wow was that rusted), but boy is that muffler stuck on there.
https://ibb.co/xJ07jwm