If you look to the left side of the carburetor and notice a small black hose that at first sight appears to be a simple vent hose, it is not. This hose needs to be connected to the small nipple next to the clear hose that enters the fuel tank.
If you have very small fingers it is possible to put the hose back into position. I elected to remove the two screws from the carburetor for easier access. If you remove the carburetor there is a small paper gasket. Make sure the gasket is aligned when re-assembling.
There is a small spring in the hose to keep it from kinking, so take a small toothpick and push the spring back before placing the hose into position.
