Walbro tap size is 5/16 x 24 UNF

[coinman66]

For future reference for those who might want to know. Main nozzle tap size is 5/16 x 24 UNF. The brass emulsion tube fit great after running tap thru hole. Threads just needed touched up.
Thanks !

 

[reynoldston]

Just a standard size tap you should be able to buy in any hardware store. For just home use you can pick up a complete set from HF.