I have a 93 burb 2500 with 7.4. There is some fuel line couplers just forward of the back wheel. Could anyone tell me what the thread sizes are on those fittings. The center part of the fitting takes a 3\4 wrench and the tube side takes a 16 mm wrench. I am guessing it is metric at 16x1.5mm O ring.
thanks

 

Those are probably a flare.

 

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