Posted by Steve@Advance on October 16, 2019 at 07:18:55 from (24.182.105.128):
In Reply to: JD Crab overhaul posted by 330 Standard on October 16, 2019 at 05:53:49:
Those carbs are really simple to work on.
Are you sure it is flooding? True flooding will drip gas sitting with the fuel valve open. It is normal for a few drops of gas to drip following a failed choke assist start.
If after going through the carb, setting the float height, checking or replacing the float, replacing the needle/seat, and it still floods, typically it is caused from trash getting in the needle valve. Are all the screens in place? Is the tank and line clean? Take a sample in a clean glass, see what you catch. If anything is coming down from the tank, it will get in the needle valve and hold it open. Rust chunks can damage the rubber tip of the needle.
A good test of the sealing ability of the needle valve, with the top off the carb, everything assembled and adjusted, turn the top upside down, suck on the fuel inlet fitting and put your tongue over the hole. If it won't hold vacuum, something is wrong, it will flood.
With a clean tank, all factory screens in place, line blown out, I like to fully open the fuel valve before connecting the line to the carb. That will flush anything that might come down the line. Then leave the valve open as you make the final connection. That will keep anything from getting in the line and in the carb.
Paying $300 for a carb repair is insane!!! Rebuilt carbs are available, but only needed if the original is broken or missing major parts. The new aluminum carbs are generic fit-all's, not near the quality of the original.
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