Check out the instructor's comments at the end of this video for more info. I cannot believe that we have Virgin carburetor here. Zoom in. Alright, it's been a while since I've seen one of these sky right here is called a Welch plug. We're going to walk through the process to be able to get this plug out. Because underneath here you're going to see that there's actually an adjustable screw which adjusts the fuel mixture right in front of the butterfly. You're going to be able to see this hole there. If you follow that pathway up, you'll see that channel goes with the casting here for this fuel mixture screw. We're going to remove this Welch plug now because we don't want to take the carb and open it up and then have to put metal filings down inside it. So I got a couple little cheat sheet tips here, what not. First off, let's take a look at what a typical Welch plug a drilled out one looks like. I want to make a recommendation here that you guys, if you ever get to do this, keep an old one. Most all Welch plugs are about the same thickness as far as how much we have to drill through. The problem with drilling the Welch plug is there's a couple things. Number one is that it's right underneath here is that screw. When you take a pointed bit and you drill that into the head of a flat blade screw, there's a chance we're going to take so much of a flat away that then we can't get the screw out. That's problem number one is we have to understand the rest that we're going to punch through this and we don't, and right directly below this is going to be that screw. Very, very short distance. What I do to combat that is I take a drill bit and I put some tape on it just barely pass the thickness of the Welch plug. Does that make sense? The other thing you might want to do or take note of right now is that this perfect drill size happens to be 5-30 seconds. What I've got is I just keep a little bag and a little carburetor drawer that I have some wood bit screws which you'll see in a second how I'm going to use them and the drill bit and this is what I use for my Welch plug removal. I said there was a couple problems. You ready for problem number two? Would you agree with me that that plug is pretty flush to the base right here? What am I going to apply to try and get that hole drill pressure? When I'm drilling that hole I'm going to apply pressure on that. What's that want to do to that plug? Push it down further. Push it down further even closer to the screw. So once again this is risky. They are supposed to be a press fit so that they don't fall out. These should be driven in but you know older carburetors there's always that risk. If this starts moving on me, if it starts spinning on me I've got to stop and think and possibly readjust. Are you clear on that? This is normal things. You guys when we train with mechanics we always talk about training with intention. So listen to that intention that I'm talking about right here. We don't want to put too much pressure. Now anytime you go to drill a hole, would you say it's common that you use a center punch to figure out where you're going to grab the center of that? Yeah. Yeah. This is an automatic center punch. I'm going to go ahead to the edge of the work bench here. Get this out of the way here. I don't want to do it in the middle because I don't want to actually put little divots but I'll show you how this will work here. You can see it's flush. There's nothing there. This is a weak center punch and listen. Can you see the dividend left? Okay. Now they make stuff like this. Back up a second. Let me show the difference in sizes here. When we say, a lot of times we talk about specific tools. Like hey, use this size drive, use this size torque wrench, use this size strap or tie down. There's so many uses we try to say we're specific. You mechanics out there have got to understand that what? When you're dealing with small engines and power sports, you can't always just say a center punch is a center punch or a wrench is a wrench. I'm going to go ahead and do this one and I will try and put that right here. See if you can zoom in there. Wouldn't you say that made a heck of a bigger dent? Yeah. So guys it's not what I want. I want to just basically tap it. Pretty centered? Yeah. Not too bad, right? Okay. I'm going to switch to my drill bit. Glover no loop. Glover no loop, you probably shouldn't have a worry about it. And I need to see. Okay, so I'm going to do no loop. I'm going to just stop and just see. Boy, it's looking pretty good in the center, isn't it? Yeah. Okay, so now that I'm happy with that, I'm going to go a little more. Yeah, what I'm doing is hoping I got a sharp drill but I'm not pushing very hard. I can see crackings. It was starting to crack here. There's no cream. Give me one. Okay, thank you for that. For that one. You can see it cracking the air. Is it scattering a crack? Yeah. Okay, you see it? Okay, I quit. Okay, we're gonna find out whether I dinged it. You guys saw and felt it pop. Okay, it doesn't look like I dinged it, did it? I almost, almost everybody always does though, including me. And maybe it's from, you know, we're being so careful right now. Usually that drill bill going to put just a tiny little dimple on there. Okay, so now we're to the next problem. Good, it's gonna be the little bit harder way to do this. When you get a jet kit, they give you a wood screw, something like this. Alright, so here's the thing. In the jet kit, the ice tape, put this screw in. You're gonna go ahead and what we're trying to do is we're trying to actually bite into that. And if the screw does not go, a lot of times I'll do is I'll back off and I'll show you what I've done, is I've taken another screw that's one step bigger. And do you see how I've ground the sharp point off? What's happening is that sharp point is hitting the screw underneath. So this is just a little trick that I can go in here and try and break that seal, especially if it, if it doesn't seem to want to bite. Okay, there's your wealth flow. Hey, look at that. Didn't even touch the, didn't even touch the screw there. So, hey guys, that is how you get that out. Actually I got one. I'll pray I get a blow gun there. Okay, alright, back the camera up here. This table, this work bench now is full of what? Full of shavings, okay, do not take your carburetor apart right now. This is something where we need to reset. We gotta have that moment. We talk about that a lot with every mechanic should know is that I got to reset this, get this cleaned off. If I get any of this stuff in the carburetor, what am I going to have happen? I'm going to have problems, right? So,