Hey, everyone. My savage is an 09 just over 9600 miles. I've started having a chirping or squeak when I'm decelerating but only if the clutch is engaged. Seems to be coming from the left hand side, I can first hear it around 20mph but it gets loud around 25mph. (I commute in Seattle so there is a lot of starting and stopping in that speed range.) Doesn't happen if I'm on the throttle or if I'm using the engine to brake. If I'm slowing down with the engine and pull the clutch it starts, release clutch it goes away.

First started noticing something about a week ago but couldn't put my finger on it. Went for ~70 mile ride Sunday and didn't hear it. Then today it's loud and pronounced. Seems to be coming from the left side.

Ideas? Hopefully something obvious and easy to fix!?  

Thanks for your wisdom, everyone!

Check your belt, make sure you can turn it 90 degrees with just your fingers. Make sure you do this in the midpoint between the front and rear pulley. If you can't turn it 90 degrees, it's too tight. If you can turn it more than 90 degrees, too loose.

Thanks, guys. I'll check it and report back.

I've seen this video before. I do have one question should it turn 90 degrees pretty easily (the video looks like minimal effort) or should there be a fair amount of resistance?

So it seems looser than it's ever been. I do check it periodically but not a lot looser. The effort to twist it has just gone down but seems similar to the videos. I'm tempted to tighten it.

09 just over 9600 miles

Mine was like a constant chorus of crickets. Of COURSE, when I asked the dealership to check it out, they couldn't get it to do it.

Coff, coff...

What Dave said, definitely.
And, the rubber segments are getting old. Rubber is rubber. They aren't in the sun, but hot and cold,I guess it's all gonna add up.
Once you really have a look at how it's put together and think about what kinda stresses that part of the bike deals with, that they hold up as well as they do is kinda amazing.
I know how it feels to nail that thing and feel it accelerate.
The belt is pulling on the top of that pulley, HARD, and it's trying real hard to twist the pulley on the axle. You're mashing the rubbers, and just giving everything that is trying to keep the pulley centered on the axle a real beating.
I think another possible cause of a chirp is the teeth on the belt take a set,, and are slightly tilted, and maybe under deceleration the lower front edge of the teeth are touching the back side of the top teeth of the front pulley.
You could drag a bar of Gulf canning waxfrom front to rear under the top side of the belt and rear to front on the bottom side and see what happens.
Or, a bar of Ivory soap that is new, not soft from water yet.
That stuff works a trick on sticking wooden drawers.

And if you don't want to bother making one, I think I have a couple of leftover shims lying around. $5 shipped, which covers the material, postage, packaging (and engineering ).

Just covering my expenses  

Ok, So I talked to a mechanic. I came away feeling like I know more about working on this bike than he did... which is a little worrying.

He didn't think it sounded bad but to me it's pretty loud and seemingly getting worse.

He did seem to think it was probably coming from the front pulley? Said greasing it might help. I'm reading through my clymers and it says to drop the oil and disconnect the battery, etc. in order to get at the front pulley. Can I just take the cover off? What sort of grease would you throw in there?

The only people who know less about these bikes than a Suzuki mechanic is someone who has never seen a motorcycle.
The bike is too cheap to be hauling in to the shop. They never see them. We have seen two motors ruined by professional mechanics who installed the oil filter Backwards..
You're ahead to be patient, ask here, work through it.