When existing fuel lines are disturbed, a residue in the fuel line breaks loose. If not replacing EVERYTHING upstream of where the line was disturbed, it is a good idea to flush the fuel lines. Also, a residue builds up on the fuel pump diaphragm. If there is no pressure on the downstream of the fuel pump, the diaphragm will flex a little further, allowing this residue to flake off.
Remove the fuel line from the carburetor, and attach a temporary rubber hose to the fuel line. Place the free end of the hose in a coffee can (or similar). Pull the ignition wire so there is no spark. Turn the engine over sufficiently that the fuel pump pumps maybe a pint of fuel into the can. Use this fuel to drown ticks you remove from your dog, or start a brush fire; don't use it in an engine.
It is a good idea to replace the fuel filter at the carburetor (add one if there is not currently one in place).
Since I manufacture carb kits, I probably should not have posted this
Then I could sell a second kit when the trash in the line stopped up the carburetor....again.
Jon
