We get the K10 HDA Kits from an aftermarket supply and they fit all of the HDA Carburetors. Jacob makes a good point about the vent hole. You may want to get the K24HDA Kit. It is the exact replacement kit for the HDA 199
You can use the K10-HDA kit but make sure you make the hole in the metering diaphragm and gasket for the atmospheric vent.
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