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HOFFMANN HO-V352F/170FQ+10
FUEL SYSTEM
The fuel is supplied to the engine from two tanks, one located in each wing. From these tanks,
the fuel flows by gravity through the fuel shut off valve and from there through a fuel strainer
via an electric booster pump and a mechanical main pump to the carburetors
Fuel system venting is essential to system operation. Blockage of the venting system will
result in a decreasing fuel flow and eventual engine stoppage. Venting is accomplished by an
interconnecting line from the right fuel tank to the left tank. The left tank is vented overboard
through a vent line which is equipped with a check valve, and protrudes from the bottom
surface of the left wing near the wing strut attach point. The right fuel tank filler cap is also
vented.
Information about the fuel system can be found in Fig. 1 - 3. Fuel system maintenance
information is included in "Maintenance Instructions" in Section VI.
DRAIN VALVES IN WING TANK SUMPS
Every tanks is equipped with drain valve.to provide a means for the examination of fuel
in the system for contamination and grade. The valve protrudes on the underside of the wing
just outside the cabin door. When testing the fuel, a sampling cup stored in the aircraft is used.
taking a fuel sample, insert the probe of the cup into the center of the quick-release valve and
push it upwards. Fuel now flows from the tank sump into the cup as long as the pressure on
the valve is maintained.
LONG RANGE FUEL TANKS
For longer flight times and distances wings with long-distance tanks are available, where the
standard wings and fuel tanks can be exchanged
FUEL TANKS
Tanks
Two Standard
(each 13 US-Gal. = 49 ltr.)
Two Long range tanks
(each 19 US-Gal. = 72 ltr.)
Fig. 1 - 3
Manual Cessna F150L
NS402S with ROTAX 912 S3 and
Usable
All flight conditions
22,5 US-Gal.
= 85 ltr.
35 US-Gal.
= 132 ltr.
Airplane Flight
Not usable
3,5 US-Gal
= 13 ltr.
3,0 US-Gal.
= 12 ltr.
Nr. 160
1-8
Page:
Revision 1
Total
26 US-Gal.
= 98 ltr.
38 US-Gal.
= 144 ltr.
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