Federalees
Freshman Member
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I am tuning the SU HS6 carbs on my TR4A. For the initial setting, the manual states "screw the jet adjusting nut until the jet is flush with the bridge of the carburetter or fully up if this position cannot be obtained". My situation is that the jet on the back carb is flush, but the jet on the front carb cannot reach the bridge to be flush. I lowered the back jet the the appropriate amount by turning the nut 12 flats. With that done, the front jet as far up as it will go, is the same depth as the back jet once the back jet was adjusted. Do I use this as my starting point for adjustments? Or, do I turn the nut on the front carb the 12 flats which will result in the jet being lower than the rear for the initial start?