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3. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Trouble-Shooting
1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Maintenance Practices
1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
2. Remove/Install the Engine Driven Fuel Pump Drain . . . . . . . . . . . 201
3. Remove/Install the Fuel Flow Divider Drain . . . . . . . . . . . . . . . . . 202
4. Remove/Install the Induction Manifold Drain . . . . . . . . . . . . . . . . . 203
% Section 71-71
% Engine Drains - TAE 125 Diesel Engine
% 1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
% 2. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
AIRCRAFT
Power Plant DA 40 Series
AMM
Page 8
20 Sep 2007 71-CONTENTS Doc # 6.02.01
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Intentionally left blank
AIRCRAFT
DA 40 Series
AMM
Power Plant
Doc # 6.02.01
Rev. 5 71-00-00 Page 1
20 Sep 2007
CHAPTER 71
POWER PLANT
Section 71-00
Power Plant - Lycoming Engine
1. General
This Chapter tells you about the power plant installed in the DA 40. It tells you about the components
that make the power plant. It also tells you how to remove/install the power plant.
For data on the engine test after installation refer to the Lycoming Operator's Manual for the IO-360-
M1A engine. Refer to the DA 40 Airplane Flight Manual for engine start/stop procedures.
Refer to these Chapters for data about other engine systems:
) Chapter 72 Refer to the Lycoming Operator's Manual for data on the engine.
) Chapter 73 Engine fuel and control. Refer to the Lycoming Operator's Manual for data on
the fuel injection system.
) Chapter 74 Ignition system power supply and installation of high-tension cables. Refer to the
Slick Maintenance Manual for more data on the magnetos. Refer to the
Lycoming Operator's Manual for data on the spark plugs.
) Chapter 76 Engine controls.
) Chapter 77 Engine indicating.
) Chapter 78 Exhaust system.
) Chapter 79 Oil system components installed in the airframe. Refer to the Lycoming
Operator's Manual for data on the engine oil system.
) Chapter 80 Starter system control and installation. Refer to the Lycoming Operator's
Manual/Sky-Tec Manual for data on the lightweight geared starter.
Note: Equipment which is certified for installation in the DA 40 is listed in Section 6.5 of
the Airplane Flight Manual. Such equipment may be installed in accordance with
the Airplane Maintenance Manual.
Any equipment which is not listed in Section 6.5 of the Airplane Flight Manual is
called "Additional Equipment". The installation of Additional Equipment is a
modification which must be handled in accordance with national regulations or a
Service Bulletin.
AIRCRAFT
Power Plant DA 40 Series
AMM
Page 2
20 Sep 2007 71-00-00 Doc # 6.02.01
Rev. 5
Bottom Cowling
Top Cowling
Engine Air Intake
Engine Drains
Engine Mounting Frame
Electrical Harness
Oil Cooler Air Intake
Engine Cooling Air Intake
Figure 1: Power Plant
AIRCRAFT
DA 40 Series
AMM
Power Plant
Doc # 6.02.01
Rev. 5 71-00-00 Page 3
20 Sep 2007
2. Description and Operation
The DA 40 has a Lycoming 4-cylinder, horizontally opposed, direct drive engine. The engine type is IO-
360-M1A. The engine has a wet sump oil system. The IO-360-M1A is air cooled and has a fuel injector
system. It has an electric starter and Slick magnetos. It also has either a SlickSTART magneto booster
system or a Limited Authority Spark Advance ignition system (LASAR).
The IO-360-M1A engine has a hollow crankshaft which lets oil flow to the propeller from the propeller
governor. The propeller flange is type SAE 2 Mod. with 6 mounting bushings. The propeller turns in a
clockwise direction when viewed form the cockpit.
The power plant has these components installed:
) Cowling
The power plant has a top and bottom engine cowling. The two halves attach to each other and to
the airframe with camloc quick release fasteners. The top cowling has one small access panel for
the engine oil filler and dipstick. The bottom cowling has two large cooling air intakes and one air
intake for the engine air filter.
) Engine Mount
The engine mount attaches to the firewall at five locations. Tubular steel makes the mounting frame.
The engine attaches to the engine mount with shock-mounts. Rubber and metal bushings make the
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