J.P. Instruments EDM 760 Pilots Guide - Manual (Page 50)

T I T
FUEL FLOW
IN GAL
GAL KGS LTR L
  
BS
Selects the units in all measurements
where fuel quantity or fuel rate is
displayed
MAIN=I00
TNK Main tank capacity, in units selected.
Can also be set by HOLDING in the
STEP Button on start up will go
directly to TANK SIZE.
AUX? N AUX? Y 
TNK
TNK
Y—Yes—aircraft has auxiliary tanks
AUX=0
TNK Auxiliary tank capacity
Page 46 Engine Data Management