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Partial walk-around of the fuel additive blender unit (FABU). Picture 2 of 5. The FABU would ordinarily be clad in a red heater assembly. There appear to have been several FABU design iterations; one, like this particular FABU, had the full indicator on the raised center area, while others had the full indicator closer to the edge. Below the black label (as it is mounted on the FABU) is the bleeder plug. At left is the FABU's outlet port. | ||||
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