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Figure 7.4. Canopy

7.9. POWERPLANT
7.9.1. Engine
DA20-C1 aircraft are equipped with the Continental IO-240-B engine.  The IO-240-B is a fuel injected, 4 cylinder, 4 stroke engine with horizontally opposed, air cooled cylinders and heads. The propeller drive is direct from the crankshaft.
Displacement:    239.8 cu.in. (3.9 liters)
Max. Continuous Power: 125 HP / 93.25 kW at 2800 RPM 
Additional information can be found in the Engine Operating Manual.
The powerplant instruments are located on the instrument panel on the co-pilot's side.  The ignition switch is a key switch located on the instrument panel in front of the pilot.  The ignition is turned on by turning the key to position BOTH.  The starter is operated by turning the switch against the spring loaded start position.  The engine is shut off by moving the mixture control to the idle cutoff position then turning the ignition switch to the off position.
The DA20-C1 may be equipped with an optional altitude compensating fuel pump.  A placard on the instrument panel indicates if this system is installed.  With this system it is not necessary to manually lean the mixture with altitude.
7.9.2. Engine Controls
The Mixture, Throttle, and Alternate Air Control levers are grouped together in the center console. The tension/friction for the controls can be adjusted using the friction knob located on the right side of the center console.
Mixture Lever: right lever with red cylindrical handle and integral lock out lever
lever full forward = Full Rich
    lever full aft = Idle Cutoff The mixture control lever features a safety lock which prevents inadvertent leaning of the mixture. To release, squeeze the safety lock lever and the control knob together. Throttle: center lever with "T" handle
lever full forward = FULL throttle
    lever full aft = IDLE Alternate Air: left lever with square handle
lever full forward = Primary air intake
lever full aft = Alternate air intake The alternate air control selects a second induction air intake in case of restriction of the primary air intake (filter).

7.9.3. Mixture Control
A. Cruise
The mixture control allows leaning of the fuel mixture to maximize fuel economy during cruise conditions.  Teledyne Continental Motors specifies that above 75% of maximum rated power, the mixture must be set at FULL RICH.  It should be noted that even with the throttle set at the full power position, actual power may be less than 75% of maximum rated power and then leaning is required (reference Section 5.3.2, Cruise Performance).
B. Reduced Throttle Settings
When operating at reduced throttle settings, other than steady state cruise, the mixture should always be set to FULL RICH.  This applies to maneuvers (e.g.: stalls, spins, slow flight), descents, landing approaches, after landing and while taxiing.
　
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