Carburetor overflow is often caused by the float needle sticking and not closing. This is a common problem, which is why a float needle is included in every carburetor overhaul set or gasket set.
If this is the only problem, you do not need to purchase a complete gasket kit for this. If your carburetor matches the types mentioned, you can order this float needle.
If there are other problems, consider buying a complete gasket kit, they are mentioned under the alternatives tab.
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