Diamond DA 40 Flight Manual page 261

DA 40 AFM
A coarse filter (finger filter) is fitted before the outlet. To allow draining of the tank, there
is an outlet valve at its lowest point. A gascolator sits at the lowest point in the fuel system.
A drain valve is fitted to the gascolator, which can be used to remove water and sediment
which has collected in the fuel system. This valve is fitted centrally on the underside of
the fuselage, approximately 30 cm (1 ft) forward of the wing leading edge.
Fuel Quantity Indication
a) Standard Tank
A capacity probe ascertains fuel quantity in the tank. When the fuel quantity indicator reads
zero, only the unusable fuel remains in the tank. The total capacity of each tank is
20 US gal (approximately 76 liter). The maximum quantity that can be indicated is either
15 US gal (up to serial number 40.054) or 17 US gal (serial number 40.055 and
subsequent). The indication up to this quantity is correct. At an actual quantity above
15 US gal / 17 US gal the indication remains at 15 US gal / 17 US gal.
When the fuel quantity indicator reads 15 US gal / 17 US gal,
the correct fuel quantity must be determined with the fuel
quantity measuring device. If this measurement is not carried
out, the fuel quantity available for flight planning is 15 US gal /
17 US gal.
Doc. # 6.01.01-E
NOTE
Rev. 8 01-Dec-2010
Airplane
Description
Page 7 - 35