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this particular motor has a primer pump

I think this Murray is a "Kilowatt". Found some stuff on it at another forum and it says that Murray didn't use Comet parts on the TC but rather a company called Max-Torque made it. There is a quote from the Max-Torque rep that says "Murray was pig headed in the way they put that kart together...

Fellas My boy and his buddy both have Manco Karts. One has a Honda clone motor and the other has a Robin/Subaru. Both are pretty easy to work on, espec. with the help I have received here. 'nother kid in the 'hood is looking at a Murray full suspension kart with a 6hp Tecumseh. Kart looks...

a pic isn't going to show you quack unless it is a video the Driven works properly when throttling withOUT any load. It opens under acceleration and closes when you back off the throttle. When it is loaded, when someone is in the Kart and the wheels are on the ground, the driven jumps back...

So, here is an update. The correct belt arrived and I put it on. The problem remains much the same. BUT, I did a little test. I put the kart on blocks and throttled the motor. The pulley worked perfectly, as intended. I switched back to the wrong belt. Same. So, it is only happening when...

there is enough wrong with the belt to cause me to wonder so I'll know more in a couple of days. Ordered and OEM replacement and we'll see. Thanks to everyone who chimed in.

The belt that is currently on there is an Infinity 669-18-10 The kart is a Manco 485 and the parts schematic shows part number 5959 for the belt. I don't know if they are the same belts or not EDIT: The Manco 5959 is an asymmetric belt and is replaceable with Comet 30 Series, 203589A, with a...

I think it is open at throttle and it closes at idle. This makes sense and toystory says that is the way his works. As to the belt, the kart ran fine with the belt that was on it...at least for a while. It was during that time that the kid noticed a problem and ultimately that belt shredded...

The belt is new because the last one got shredded due to this problem

the belt is getting stuck down in the pulley. It is getting pulled tight into the narrowest point on the pulley where is literally gets jammed. If the pulley opened up then the problem would not happen. But I am not sure whether the pulley is supposed to open at throttle or idle. It appears...

The driver seems to be operating normally. As the motor accelerates the pulley closes and pulls the belt I am not exactly sure how the driven is supposed to work, in other words whether it is open at throttle and closed at idle or what. Mike pointed out the mistake with Briggs....the weights...

This driven was a mess and I rebuilt it. Before I rebuilt it the spring was warped and the retaining ring was missing. Even then, it was shredding the belt because the pulley was not opening. So, I rebuilt it (and the carb). Now it is properly assembled but it still isn't opening correctly...

Perfect. Exactly what I needed.

I want to rebuild the carb on a Honda 6.5 hp but I have not done it before. I could use a video how-to. Anyone gotz?

I don't see three springs. I have one. I took the outer cam off, replaced the spring, twisted the outer cam back on and put on one clip (even though I got 2 in the kit...I have no idea why).

The retaining ring is missing. That is part of the reason I took the entire jackshaft and driven off. I didn't know what else was wrong and I didn't want to have to do it twice so I just ordered new spring, spacers, keys, retaining rings etc... But even thought he retaining ring is missing...

I will post a pic later but I was concerned about the alignment. I am not sure whether there is a full 3/8 extra threads on the Driven side so that I could just do away with them.

The bearings on the jackshaft might have gone bad (frozen) and cut into the jackshaft, narrowing and weaking it so that it is bent. It will eventually snap if that is what is happening. This happened on ours and I had to replace the jackshaft and bearings. It is not a difficult...

Whichever dingleberry worked on this kart before me, they did a real job on the whole jackshaft/driven assembly. Not only is there no retaining ring but now that I have the whole thing off I see that the first 3/8" of the threads on the jackshaft have been ground off. I have no idea why. As...

What keeps the outer cam and the pulley together? I have the whole jackshaft out and apart. The driven came off as a piece, outer cam and all.