four position fuel selector valve is located beneath the noorboard just aft
and slightly to the left of the pedestal structure. A shaft links the valve to a handle moufited
on the pedestal structure, The positions of the handle are labelled "OFF. LEFT, BOTH ON
and RIGHI"’. Beginning with 17215035 and F17202133, a drain valve assembly is located in
the bottom of die selector valve body for sampling and dmining of fuel. Valve repair is
limited to replacement of component parts o~Jt´•