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I have attached an image of the factory fuel fitting that is from the engine and passes thru the firewall. My question is what type of fitting is this and how do I connect a fuel line too it. It kind of looks like a bell/flare fitting and also kind of looks like something you would just slip a hose and clamp on.
This link is the FWF Installation Manual for the Jabiru 3300/Zenith STOL CH750. Section 8 details attaching a firesleeved rubber fuel line and hose clamp to this fitting.
I did not use this fitting since I used a PTFE-lined stainless braided fuel line (Earl's) and used an AN bulkhead fitting to transition through the firewall.
I wouldn't want to shove a hose over a flared fitting. Seems to me that Swaging the tube end would be better.