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LEAN CUT-OFF and RICH.
− Make sure the lever moves freely with no
restriction.
(12) Do items 5 and 6 again as necessary to get
the correct values.
Torque to 12.4 Nm (110-120 in lbs).
(13) Do an inspection of the control connections
which you disconnected. If necessary for
your airworthiness authority, do a second
inspection of the controls.
DA20-C1 AMM
Engine Controls
Doc # DA201-C1
Rev. 10 76-00-00 Page 223
23 Jun 2004
Detail Steps/Work Items Key Items
(14) Do a check for loose items in the cockpit.
Especially in the area of the control
quadrant.
(15) Install the center console cover to the center
console:
− Install the six screws to the two sides of
the center console cover.
(16) Install the TRIM switch to the face plate. Push the Trim switch into position in the
face plate. Connect the connector below
the face plate.
(17) Install the 2 parts of the engine controls face
plate to the center console cover.
(18) Install the control lever knobs to these items:
− PARKING BRAKE.
− HEAT control ON OFF.
− HEAT distribution DEFROST FLOOR.
(19) Install the ignition leads to the spark plugs.
Tighten the “B” nuts.
Torque to 12.4 Nm (110-120 in lbs).
(20) Connect the airplane battery. Refer to Chapter 24-31.
(21) Install the engine cowlings. Refer to Chapter 71-10.
(22) Do an engine test. Refer to the DA20-C1 Flight Manual.
Engine Controls
DA20-C1 AMM
Page 224
23 Jun 2004 76-00-00 Doc # DA201-C1
Rev. 10
6. Alternate Air Control Range Of Movement Test
Detail Steps/Work Items Key Items
WARNING: DO NOT STAND WITHIN THE DANGER AREA OF THE
PROPELLER. IF THE ENGINE STARTS, THE PROPELLER CAN
CAUSE DEATH OR INJURY TO PERSONS.
WARNING: YOU MUST MAKE SURE THAT THE ENGINE IS SAFE BEFORE
YOU DO WORK ON THE ENGINE CONTROLS. DISCONNECT THE
SPARK PLUG LEADS. MAKE SURE THAT :
- THE IGNITION SWITCH IS IN THE “OFF” POSITION.
- THE “P” LEADS ARE GROUNDED.
- THE THROTTLE IS SET TO “IDLE”.
- THE MIXTURE CONTROL IS SET TO “LEAN CUT-OFF”.
(1) Remove the engine cowlings. Refer to Chapter 71-10.
(2) Disconnect the airplane battery. Refer to Chapter 24-31.
(3) Make the engine safe:
− Disconnect the spark plug leads.
− Make sure that the ignition switch is in
the “OFF” position.
− Make sure the “P” leads are grounded.
− Set the throttle to IDLE.
− Mixture control set to LEAN CUT-OFF.
(4) Move the alternate air control lever between
OFF and ON.
− Make sure the lever moves freely with no
restriction.
(5) Set the alternate air control lever to OFF and
hold it in position.
− Make sure the alternate air door closes
fully against the seal at the air intake. If
necessary, adjust the bowden cable
outer sheath at the support bracket.
With the alternate air control lever on the
OFF stop, there must be a minimum of
3mm (0.125 in) clearance (bounce)
between the face plate and the alternate
air control lever in the cockpit.
(6) Do a return spring test:
− Set the alternate air control lever to OFF
and hold in position.
− Carefully push the door open and
release. Make sure the return spring
closes the door fully against the seal.
DA20-C1 AMM
Engine Controls
Doc # DA201-C1
Rev. 10 76-00-00 Page 225
23 Jun 2004
Detail Steps/Work Items Key Items
Note: The alternate air control lever must hit the “ON” stop in the cockpit with no
bounce. There is no “ON” stop for the flap at the air box.
(7) Set the alternate air control lever to ON and
hold it in position.
− Make sure the alternate air door opens
fully at the air intake.
(8) Move the alternate air control lever between
OFF and ON.
− Make sure the lever moves freely with no
restriction.
(9) Do items 5 and 6 again as necessary to get
the correct values.
(10) Do an inspection of the control connections
which you disconnected. If necessary for
your airworthiness authority, do a second
inspection of the controls.
(11) Install the ignition leads to the spark plugs.
Tighten the “B” nuts.
Torque to 12.4 Nm (110-120 in lbs).
(12) Connect the airplane battery. Refer to Chapter 24-31.
(13) Install the engine cowlings. Refer to Chapter 71-10.
(14) Do an engine test. Refer to the DA20-C1 Flight Manual.
Engine Controls
DA20-C1 AMM
Page 226
　
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