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- THE “P” LEADS ARE GROUNDED.
- THE THROTTLE IS SET TO “CLOSED”.
- THE MIXTURE CONTROL IS SET TO “LEAN CUT-OFF”.
(1) Remove the engine cowlings. Refer to Chapter 71-10.
(2) Make sure that the spark plug leads are
disconnected from the spark plugs. And the
battery is disconnected.
Refer to Chapter 24-31
(3) Do a test for the correct operation of the
ignition switch:
− Disconnect the ignition cables (P leads)
from the magnetos.
− Set the ignition switch to OFF.
− Set the ignition switch to R.
− Set the ignition switch to L.
− Set the ignition switch to BOTH
− Set the ignition switch to START.
− Set the ignition switch to OFF.
− Connect the ignition switch cables to the
magnetos.
Do a resistance test between each switch
cable and ground for each switch setting.
− Both cables zero ohms.
− Left zero ohms, right open circuit.
− Left open circuit, right zero ohms.
− Both cables open circuit.
− Left retard point cable open circuit,
right and left advance cable zero ohms.
Ignition
DA20-C1 AMM
Page 202
29 Apr 2004 74-00-00 Doc # DA 201-C1
Rev. 9
Detail Steps/Work Items Key Items
(4) Connect the battery. Refer to Chapter 24-31.
(5) Connect the spark-plug leads to the spark
plugs.
Torque to 12.4-13.5 Nm (110-120 in lbs).
(6) Install the engine cowlings. Refer to Chapter 71-10.
(7) Do an engine run up test. Refer to the DA20-C1 Flight Manual.
3. Remove/Install The Ignition Switch
A. Remove the Ignition Switch
WARNING: DISCONNECT THE BATTERY BEFORE YOU WORK ON THE
IGNITION SWITCH.
Detail Steps/Work Items Key Items
(1) Disconnect the airplane battery. Refer to Chapter 24-31
(2) Remove the engine cowlings. Refer to Chapter 71-10
(3) Disconnect the spark plug leads from the
spark plugs.
(4) Remove the instrument panel cover. Refer to Chapter 25-10
(5) Remove the knurled ring from the front of the
ignition switch.
− Move the ignition switch clear of the
instrument panel.
(6) Disconnect the electrical cables from the
ignition switch.
Record the cable connections.
(7) Remove the ignition switch from the
airplane.
DA20-C1 AMM
Ignition
Doc # DA 201-C1
Rev. 9 74-00-00 Page 203
29 Apr 2004
B. Install The Ignition Switch
Detail Steps/Work Items Key Items
(1) Make sure that the spark plug leads are
disconnected from the spark plugs. And
makes sure that the battery is disconnected.
Refer to Chapter 24-31
(2) Connect the electrical cables to the ignition
switch.
Refer to the Chapter 92
(3) Move the ignition switch into position in the
instrument panel.
(4) Install the indicator plate onto the front of the
ignition switch.
Make sure the indicator plate is installed
correctly.
(5) Install the knurled ring to hold the front of the
ignition switch.
(6) Do a test for the correct operation of the
ignition switch:
− Disconnect the ignition cables (P leads)
from the magnetos.
− Set the ignition switch to OFF.
− Set the ignition switch to R.
− Set the ignition switch to L.
− Set the ignition switch to BOTH
− Set the ignition switch to START.
− Set the ignition switch to OFF.
− Connect the ignition switch cables to the
magnetos.
Do a resistance test between each switch
cable and ground for each switch setting.
− Both cables zero ohms.
− Left zero ohms, right open circuit.
− Left open circuit, right zero ohms.
− Both cables open circuit.
− Left retard point cable open circuit,
right and left advance cable zero ohms.
(7) Install the instrument panel cover, Refer to Chapter 25-10.
(8) Connect the battery. Refer to Chapter 24-31.
(9) Connect the spark-plug leads to the spark
plugs.
Torque to 12.4-13.5 Nm (110-120 in lbs).
(10) Install the engine cowlings. Refer to Chapter 71-10.
(11) Do an engine run up test. Refer to the DA20-C1 Flight Manual.
Ignition
DA20-C1 AMM
Page 204
19 Dec 1997 74-00-00 Doc # DA 201-C1
Rev. 0
4. Remove/Install The Ignition Switch Cables
WARNING: YOU MUST MAKE SURE THAT THE ENGINE IS SAFE BEFORE YOU
DO WORK ON THE IGNITION SYSTEM. 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 “CLOSED”.
　
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