21-02-2024, 03:50 PM
Threads on your Zenith carb are metric. The screws holding the float chamber bowl to the carb body are m7 (course or fine?) I am not sure what the other threads are, fuel pipe union/nipple and jet threads plus emulsion block. Someone on here will be able to tell you. Also the Nippy/65 would have had a Zenith downdraught carb originally but again someone will be able to tell you the correct item.