Cessna 150 1968 Owner's Manual page 48

LANDING.
(1) Before landing, push "WING LVLR" c ontrol !mob full in to the off
position.
If
a malfunction should occur, the system is easily overpowered with
pressure on the control wheel. The s ystem should then be turned off.
the event of partial or c omplete vacuum failure, the stability augmenta­
tion system will automatically become inoperative.
(lJ The wing leveler system may be overpowered at any time without
damage or wear. ' However, for extended periods of maneuvering
be desirable to turn the system off.
(2) It is recommended that the system not be engaged during take -off
and landing. Although the system can be easily overpowered, servo forces
C;lUld significantly alter the manual "feel" of the aileron control, especially
should a malfu ri ction occur.
FUEL TANK QU ICK-DRAIN VALVE KIT
T w o fuel tank quick -drain valves and a fuel sampler cup are available
as a kit to facilitate daily draining and inspection of fuel in the main tanks
for the presence of water and sediment. The valves replace existing fuel
tank drain plugs located at the lower inboard area of the wing. The fuel
sampler cup, which may be stowed in the map compartment, is used t o
drain the valves. The sampler cup has a probe i n the center of the cup.
When the probe is inserted into the hole in the bottom of the dra in valve
and pushed upward, fuel flows into the cup t o facilitate visual inspection
of the fuel. As the cup is removed, the drain valve seats, stopping the
flow of fuel .
6- 4
EMERGENCY PROCEDURES
OPERATING NOTES
In
it
may