Diamond DA 40 Flight Manual page 249

DA 40 AFM
In cruise, the mixture should be made leaner in order to reach the appropriate fuel-air
mixture. The leaning procedure is given in Chapter 4.
To shut off the engine the mixture control lever is pulled to the rear stop. Air without fuel
is thus drawn into the cylinders and the engine dies. When the engine is stationary there
is thus no fuel in the cylinders.
Alternate Air
In the event of the loss of manifold pressure because of icing or blocking of the air filter,
there is the possibility of drawing air from the engine compartment. The operating lever
for alternate air is located under the instrument panel to the left of the center console.
To open alternate air the lever is pulled to the rear. Normally, alternate air is closed, with
the lever in the forward position.
Placard on the lever, forward position:
Placard on the lever, visible when lever is in the rearward position:
Doc. # 6.01.01-E
ALTERNATE AIR
ALTERNATE AIR
ON
Rev. 8 01-Dec-2010
Airplane
Description
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