I recently bought an 06 s40. Happy with it so far but at first it was backfiring and wouldn't stay running without choke half way out. I ordered a carb kit and changed out jets and cleaned it all up. Problem is the jets I got and took out were different. U did some look I g and matched them as closely as I could. Now it runs a little better but still backfires and stalls when I go full throttle. Seems to only do this a mile or two down the road. Runs great in garage.

The muffler has its baffles cut out so I can assume that has something to do with it. I should get my stock replacement muffler Thursday and I want to re jet to stick. Can anyone tell me exactly what jets I need? I have two sets right now. As far As I know the Caeb is stock. Bike has 1900 miles on it and I'd like it to run like it!

Ok I'll have to try that when I get it back together. Do you know anything about the jetting? I have 4 jets and every diagram I look at doesn't seem to match what I have. Unless I'm just not looking at it right

I got some muffler off eBay for 200. Probably paid too much but I wanna get it together. I just took the exhaust apart and it all seemed great. I'm just gonna put it all to stock so it runs good. I'm going to try the petcock trick and call the dealer tomorrow for jetting

Justin has a point. Think through this. You can get a Dyna muffler for less than 50 bucks (more around $20-$35.) The jets are a few dollars a piece+ shipping. If you can find the right place like I did, they're liable to give you some little #4 washers for the white spacer mod. Get 5 of them, though you'll usually use 2-3 of them. You can get a carb kit for around $16.

I recommend a 147.5 main jet and 4 #4 washers for purely stock setup with stock muffler. I personally haven't tested that setup, though. I am running even richer with a 150 main with 3 washers, and it runs great, and the noise level is reasonable, but gas mileage isn't what it used to be.   I plan on installing the Dyna muffler, though. The fewer washers, the richer, and 5 of them is close in thickness to the white spacer (possibly a little thicker ). It is known that the stock setup tends to be too lean, to the point of being a little dysfunctional for some. Don't be afraid to go 1 click richer. In fact, the Savages from the 80's ran with a 152.5 main jet, which is 3 sizes larger. That is with pretty much the same setup. The experts here are free to correct me if I'm a little off here.

Don't fool with dealerships. It is well known that the Savage is a very simple bike and is relatively easy for a newbie to work on (like me )The Savage carb isn't that hard to tune. I've had mine apart (at least partly, if not mostly) a time or two. You may not know what every little passage does, but it's not brain surgery. There is only one carb, and my bike has been very reliable and easy to start, even in the winter. These bikes are not tempermental in my opinion. Dealerships, known as "stealerships" by many here, will suck you dry. You can spend more money at a shop than the bike is worth. If you need a part now and can get it for a competitive price at a dealership, then fine, do it. Otherwise, you need to learn to fix your own bike. Of course, if you like spending money more than working hard to save it, then feel free to burn it.

If you want to know something complicated, try a Honda Shadow from the 80's. Twin carbs, electric fuel pump... And I have the duty of fixing my Dad's carbs. And that thing is tempermental! Run the battery dead just trying to crank it.

The Savage is my first bike too.

The important thing is that you have jets with the right size opening, regardless of the number printed on it.

Under the main jet is a brass washer. You want to make sure that that washer is still there. Don't want to lose it.

Furthermore, you might be able to replace the main while the carb is on the bike if you're careful and know what you're doing.

First, get a screwdriver (I think they are not technically phillips, but that other one like a Phillips. I use whatever I can get hold of. Reminds me of the name of that movie with Clint Eastwood and the orangutan Any Which Way You Can.   Anyway, get those screws out of the float bowl. The point is to be careful as you may have difficulty getting in there to get a grip on the screws. Don't strip 'em.

Don't tear the gasket, or you'll have to buy another one of those as well. Put a thin layer of petroleum jelly on the gasket so it will be easy to remove for servicing. Maneuver the bowl carefully away without damaging the float. It may take a little moving around to get it off and on again.

I don't think you'll have to remove the float for this. Take a good flathead screwdriver of an appropriate size and get it in there securely to remove the jet. It's brass, which is soft, so you don't want to risk stripping it. Again, make sure you get the brass washer and make sure you put it back on the new jet.

Here's the tricky part. I tried and failed at this frustratingly. It took awhile to figure out what happened. The first challenge you will have is threading up the new jet without dropping it into oblivion several times Not cool! Secondly, and perhaps most importantly, be very delicate when threading in the new jet, for the main jet actually threads directly into the needle jet ([b]not the carb itself) This needle jet is moveable and slotted. There is a little nub or pin over which it's slot aligns. If you are not very delicate here, you will push the needle jet past past where it can catch the threads of the main jet, and then you will inadvertently turn the needle jet past its proper alignment. [/b] This means you'll likely end up removing the carb to get everything back together.

If you don't know what's going on, you may end up trying painfully for hours to thread that thing up in there, but it'll never take.

Understand? Clear as mud?

K&L makes a good carb kit which is fairly well received. It is the one I have used. It is #18-5064, and it is readily available on EBay and Amazon for around 16 bucks or so. I have not needed to use all of it. I reused my old float valve; even though it is boogered up, it still works.  

You may not necessarily need a carb kit. You need what you need. Jets are not even included in this carb kit.

Go to the section in this forum labeled Marketplace.  In it you'll find Jet sets sold by Lancer who is a member here.  He puts together and sells the sets and other items as well.  Many of us have bought his jet sets including me.  He also provides tips on which jets to use.  My forum signature notes my current jetting but I do use a Harley Dyna muffler which is slightly more free flowing than the stock muffler.  It sounds as if you probably have an adequate collection of jets already, maybe it is just a matter of selecting the right sizes.

Also, go the tech section of the forum, there is an index of the contents.  You'll find a thread concerning the "white spacer mod" for the carb which is worth doing if you have it apart.  Good luck.