Ya that nut pulls on a shaft that holds the carb on. I know my 1/8 scale pulls two rounded pieces together and holds it. The only gasket is the exhaust gasket, you really should replace it after removing it but you can reuse it, or i went to checker and picked up some gasket material for like 5 bucks or something and i can make as many as i want. Takes longer than just tossing one in. But ill never run out. Click on the link and check out those videos on how to seal your motor, if its apart mine as well seal it up. Oh and sometimes when you loosen the nut the carb gets stuck, and doesnt wanna budge, just work it off trying not to break anything. And be careful cause one time i was trying to get it off, and couldnt for the life of me so i ended up just pulling it off, well it popped off and i hit my nail on the cooling fins, breaking part of my nail off, thankfully it just broke the tip off and i was fine. But it coulda been worse haha.

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