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(2) Put a container under the engine drains to
catch the fuel.
Refer to Chapter 71-70.
(3) Set the throttle to FULL POWER.
(4) Set the mixture control to FULL RICH.
(5) Set the GEN/BAT switch to ON.
(6) Set the fuel pump switch to ON.
(7) Loosen the fitting that attaches the fuel
pressure hose to the fuel pressure sender.
Refer to Fig 1.
Catch the fuel in a container or rag.
Bleed the system until there is a steady
flow of fuel for 15 seconds.
(8) Tighten the fitting that attaches the fuel
pressure hose to the fuel pressure sender.
Look for leaks.
(9) Set the fuel pump switch to OFF.
(10) Set the GEN/BAT switch to OFF. Wait for several minutes for the fuel to
drain from the cylinders.
The propeller can be pulled through 2 turns
to remove fuel from the cylinders.
CAUTION: DO NOT ATTEMPT TO START THE ENGINE UNTIL ALL FUEL HAS
DRAINED FROM THE ENGINE DRAINS. THIS PROCEDURE
FLOODS THE INTAKE SYSTEM. ATTEMPTING TO START THE
ENGINE CAN CAUSE A HYDROSTATIC LOCK AND SUBSEQUENT
ENGINE FAILURE.
(11) Remove the container for the engine drains.
(12) Do an engine run-up test:
− Set the engine to IDLE RPM.
− Make sure that the engine operates
correctly
For the engine run procedures refer to the
DA20-C1 Flight Manual.
Refer to the Teledyne Continental
Operators Manual for engine data.
(13) Stop the engine. Look for leaks.
(14) Install the engine cowling. Refer to Chapter 71-10.
DA20-C1 AMM
Ignition
Doc # DA 201-C1
Rev. 0 74-TITLE Page 1
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CHAPTER 74
IGNITION
Ignition
DA20-C1 AMM
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Ignition
Doc # DA 201-C1
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TABLE OF CONTENTS
CHAPTER 74-00 IGNITION......................................................................................................................1
1. General.......................................................................................................................1
2. Description And Operation .........................................................................................1
trouble-shooting ..........................................................................................................................101
3. General...................................................................................................................101
maintenance practices ................................................................................................................201
1. General...................................................................................................................201
2. Ignition Switch Test ................................................................................................201
3. Remove/Install The Ignition Switch ........................................................................202
4. Remove/Install The Ignition Switch Cables............................................................204
5. Remove/Install The Spark-Plug Leads...................................................................206
6. Starting Vibrator Battery Test .................................................................................208
7. Remove/Install The Starting Vibrator Battery.........................................................208
Ignition
DA20-C1 AMM
Page 2
19 Dec 1997 74- CONTENTS Doc # DA 201-C1
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DA20-C1 AMM
Ignition
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Rev. 9 74-00-00 Page 1
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CHAPTER 74-00
IGNITION
1. General
This Chapter tells you about the ignition system for the engine. And it tells you about the ignition
electrical power supply. It tells you how to remove/install the ignition switch and the ignition switch
cables. It also tells you how to test the ignition switch. And it gives you the trouble-shooting data
for the ignition switch and the ignition harness.
Refer to the TCM Maintenance Manual for data on the other ignition system components. And for
the trouble-shooting of these items.
The ignition system has these components:
− Ignition Switch.
− Ignition cables
− Two Magnetos
− Starting vibrator “Shower of Sparks” system.
− Ignition Harness (Spark-plug leads).
− Spark Plugs.
2. Description And Operation
The DA20-C1 has a dual ignition system. Two Slick magnetos supply the high voltage electrical
pulses to the spark plugs. An ignition switch in the cockpit controls the magnetos. Shielded leads
　
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