Scania DI9, DC9 with DEC2. Industrial engine. Operator’s manual - part 1

 

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Scania DI9, DC9 with DEC2. Industrial engine. Operator’s manual - part 1

 

 

Operator's Manual

DI9, DC9 with DEC2

Industrial engine

opm96-9adec en

1 588 889

2003-10:1

Industrial & Marine Engines

IMPORTANT INFORMATION

When working on the engine, for example adjusting drive belts, changing the oil or adjusting the 

clutch, it is important not to start the engine. The engine may be damaged and there is

SERIOUS RISK OF INJURY.

For this reason, always secure the starting device or disconnect a battery cable before working on 

the engine. This is especially important if the engine has a remote starter or automatic starting.

This warning symbol and text is reproduced beside those maintenance points where it is

especially important to consider the risk of injury.

!

COMMISSIONING REPORT - WARRANTY

When the commissioning report has been filled in and sent to Scania, you have a 1-year warranty from the date 
of commissioning.
Also fill in the particulars below as this can make things easier if you need to contact for example a service 
workshop

.

Engine number

Commissioning date

User's name and address

Signature

Engine type

Variant

Engine type and variant are indicated on the engine type plate

2

2003-10:1

PREFACE

This Operator's Manual describes the handling and maintenance of Scania 

DC9 and DI9 Industrial Engines with DEC2.
The engines are of direct-injection, liquid-cooled, four-stroke, 6-cylinder in-

line diesel type. These engines have turbochargers and charge air coolers: see 

page 10.
Common applications are as power units in construction machines, generator 

sets, earth-moving, railway and forestry machines as well as in irrigation 

systems.
The engines can have different output and speed settings.
The normal output setting of the engine (performance code) is indicated on 

the type plate, see page  10.

Note:

Only standard components are described in the Operator's 

Manual. Regarding special equipment, refer to the instructions of 

the relevant manufacturer.

In order to obtain the best value and service life from your engine, there are 

several points you should bear in mind:

- Read the manual before starting to use the engine. Even though you may 

be experienced with Scania engines you may find new information in 

this Operator's Manual.

- Follow the maintenance instructions. Good working order and service 

life are ensured if maintenance is carried out according to the 

instructions.

- In particular, read the safety information starting on page  6.
- Get to know your engine so that you know what it can do and how it 

works.

- Whenever necessary, always contact an authorised Scania workshop. 

They have special tools, genuine Scania parts and staff with training and 

practical experience of Scania engines. 

Note:

Always use genuine Scania parts during service and repair so as 

to keep your engine in the best possible working order.

The information in this manual was correct at the time of going to press. 

However, we reserve the right to make alterations without prior notice. 

Scania CV AB
Industrial and Marine Engines

S-151 87 Södertälje, Sweden

During the warranty period, 

only genuine Scania parts may 

be used during service and 

repair otherwise the warranty 

will be invalidated. 

2003-10:1

CONTENTS

PREFACE  . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

ENVIRONMENTAL RESPONSIBILITY  . . . . . .4
CERTIFIED ENGINES   . . . . . . . . . . . . . . . . . . . .5
SAFETY INFORMATION . . . . . . . . . . . . . . . . . .6

Safety precautions for running the engine   . . . .7
Safety precautions for handling materials . . . . .8
Safety precautions for care and maintenance  . .8

TYPE DESIGNATIONS   . . . . . . . . . . . . . . . 10

DEC2 CONTROL SYSTEM  . . . . . . . . . . . . 12

STARTING AND RUNNING  . . . . . . . . . . . 19

AT FIRST START  . . . . . . . . . . . . . . . . . . . . . . .19
CHECKS BEFORE RUNNING  . . . . . . . . . . . . .21
STARTING THE ENGINE   . . . . . . . . . . . . . . . .21

At temperatures below 0°C:  . . . . . . . . . . . . . .22

DRIVING  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Rotation speed . . . . . . . . . . . . . . . . . . . . . . . . .23
Coolant temperature  . . . . . . . . . . . . . . . . . . . .23
Oil pressure  . . . . . . . . . . . . . . . . . . . . . . . . . . .24

STOPPING THE ENGINE  . . . . . . . . . . . . . . . . .24

Clutch  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

CHECKS AFTER RUNNING  . . . . . . . . . . . . . .25

MAINTENANCE  . . . . . . . . . . . . . . . . . . . . . 26

ENGINES WITH FEW OPERATING 

HOURS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
MAINTENANCE SCHEDULE  . . . . . . . . . . . . .27

LUBRICATING OIL SYSTEM   . . . . . . . . . 28

OIL GRADE  . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Oil analysis  . . . . . . . . . . . . . . . . . . . . . . . . . . .28

CHECKING OIL LEVEL . . . . . . . . . . . . . . . . . .29

Checking oil level during operation  . . . . . . . .29

OIL CHANGE   . . . . . . . . . . . . . . . . . . . . . . . . . .29

Maximum angles of inclination during 

operation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

CLEANING THE OIL CLEANER   . . . . . . . . . .30
CHANGING THE OIL FILTER   . . . . . . . . . . . .32

COOLING SYSTEM  . . . . . . . . . . . . . . . . . . 32

CHECKING COOLANT LEVEL   . . . . . . . . . . .32
CHECKING THE COOLANT  . . . . . . . . . . . . . .33

Checking protection against corrosion  . . . . . .35
Changing the coolant   . . . . . . . . . . . . . . . . . . .35

CLEANING THE COOLING SYSTEM  . . . . . .36

Internal cleaning  . . . . . . . . . . . . . . . . . . . . . . .37

AIR CLEANER . . . . . . . . . . . . . . . . . . . . . . . 38

READING THE VACUUM INDICATOR   . . . .38
CLEANING THE AIR CLEANER COARSE 

CLEANER   . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
CLEANING OR CHANGING THE FILTER 

ELEMENT   . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
CHANGING THE SAFETY CARTRIDGE . . . .39

FUEL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . 40

CHECKING THE FUEL LEVEL . . . . . . . . . . . .40
CHANGING THE FUEL FILTER  . . . . . . . . . . .40
CHECKING THE INJECTORS  . . . . . . . . . . . . .41

ELECTRICAL SYSTEM . . . . . . . . . . . . . . . 42

CHECKING THE ELECTROLYTE LEVEL 

IN BATTERIES  . . . . . . . . . . . . . . . . . . . . . . . . .42
CHECKING THE STATE OF CHARGE IN 

BATTERIES  . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
CLEANING BATTERIES  . . . . . . . . . . . . . . . . .42
CHECKING THE COOLANT MONITOR  . . . .43
CHECKING THE TEMPERATURE 

MONITOR   . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
CHECKING THE TEMPERATURE 

SENSOR  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
CHECKING THE OIL PRESSURE 

SENSOR/MONITOR  . . . . . . . . . . . . . . . . . . . . .45
CHECKING THE OIL PRESSURE MONITOR 

FOR DEC 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

MISCELLANEOUS  . . . . . . . . . . . . . . . . . . . 46

CHECKING THE DRIVE BELT  . . . . . . . . . . . .46
CHECKING FOR LEAKAGE,

NECESSARY ACTION  . . . . . . . . . . . . . . . . . . .47
CHECKING/ADJUSTING VALVE 

CLEARANCES   . . . . . . . . . . . . . . . . . . . . . . . . .48
CHANGING (

OR

 CLEANING) THE CLOSED 

CRANKCASE VENTILATION VALVE.  . . . . .50

LONG-TERM STORAGE  . . . . . . . . . . . . . . 51

Preservative fuel  . . . . . . . . . . . . . . . . . . . . . . .51
Preservative oil  . . . . . . . . . . . . . . . . . . . . . . . .52
Preparations for storage   . . . . . . . . . . . . . . . . .52
Batteries   . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Storage   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Taking out of storage   . . . . . . . . . . . . . . . . . . .53

TECHNICAL DATA   . . . . . . . . . . . . . . . . . . 54

ALPHABETICAL INDEX . . . . . . . . . . . . . . 58

4

2003-10:1

ENVIRONMENTAL RESPONSIBILITY

Scania has always been very much at the leading edge when it comes to 

developing and producing engines which are as environmentally friendly as 

possible. 
Major progress has been made on reducing harmful exhaust emissions as 

required to be able to meet the stringent environmental standards stipulated 

on almost all markets.
At the same time, we have been able to maintain high quality in terms of 

performance and operating economy for Scania Industrial and Marine 

Engines.
To preserve these qualities throughout the entire service life of the engine, it 

is important for the operator/owner to follow the instructions on running, 

maintenance and the choice of fuel and oil as outlined in the manual. 
Other efforts to preserve the environment we all share are possible by 

ensuring that the person carrying out servicing and maintenance always 

makes sure that environmentally hazardous waste after servicing and repairs 

(oil, fuel, coolant, filters, batteries, etc.) is dealt with and disposed of in 

accordance with applicable environmental standards.
On a number of pages, this Operator's Manual contains specially highlighted 

text with instructions to help protecting our environment during certain 

servicing and maintenance work.

See example

Use a container to avoid spillage 

when bleeding and changing 

components.

2003-10:1

CERTIFIED ENGINES

Emissions-certified engines have been approved in accordance with a special 

certification standard. The certified engines supplied by Scania meet the most 

stringent emissions standards which apply on European (EU) and non-

European (USA) markets.
Scania guarantees that all the engines it supplies of a certified type are 

equivalent to the engine approved for certification. 
The engine comes with a special certification plate which indicates the 

certification rules (standard) to which the engine has been approved. See 

page 10.
The following is required for the certified engine to meet emissions standards 

once it has been commissioned:

- Servicing and maintenance must be carried out in accordance with the 

instructions in this manual.

- Only genuine Scania parts are to be used.
- Injection equipment is to be serviced by an authorised Scania 

workshop.

- The engine must not be modified with equipment not approved by 

Scania.

- Seals may be broken and setting data edited only once approval has 

been granted by Scania in Södertälje. Changes may be made by 

authorised personnel only.

- Changes which affect the exhaust system and intake system must be 

approved by Scania.

Otherwise, the instructions in the manual in respect of running, care and 

maintenance of the engine shall apply. The safety precautions described over 

the next four pages must also be observed.

Important!

If servicing and maintenance are not carried out as specified 

above, Scania can no longer guarantee that the engine will 

comply with the certified design, nor can it take responsibility 

for any damage that occurs.

6

2003-10:1

SAFETY INFORMATION

General

This Operator's Manual contains safety information which is important so as 

to avoid both personal injury and damage to the product/other property. See 

also page 1.
The text highlighted in text boxes on the right of a number of pages is 

important for engine function and in order to avoid damage to the engine. If 

these instructions are not followed, your warranty may be invalidated.

See example 

Similar text may also appear in the text column, and in this instance it will be 

marked

Note:

 or 

Important

The warning text found in text boxes on the right of a number of pages which 

is marked with a warning triangle and starts with WARNING is extremely 

important and warns you of serious engine faults or incorrect handling which 

may lead to injury.

See example 

A list of the safety precautions to be followed when running and maintaining 

Scania engines can be found on the next three pages. Similar text can often be 

found at the relevant maintenance points, and here different levels of 

importance are attached to such text in accordance with the above 

description.
All points are marked 

!

so as to indicate how important it is to read through 

each point in this section.

For safety reasons, smoking is not allowed:

• In the vicinity of the engine and in the engine room

• When fuelling and close to the filling station

• When working on the fuel system

• In the vicinity of inflammable or explosive material (fuel, oils, 

batteries, chemicals, etc.)

Immobilise the starting device 

when working on the engine.

If the engine starts out of 

control, there is a

SERIOUS RISK OF

INJURY

Only use Scania genuine fuel 

filter.

2003-10:1

7

Safety precautions for running the engine

Daily inspection

Always carry out a visual check of the engine 
and engine room before starting the engine and 
once you have stopped the engine after 
running.
This will enable you to easily detect and fuel, oil 
or coolant leaks, or any other abnormalities 
which may require rectification.

Refuelling

There is a risk of fire and explosion when 
refuelling. The engine must be stopped and 
smoking is not allowed.
Do not overfill the tank due to a risk of 
expansion, and close the filler cap properly. 
Use only fuel recommended in the service 
literature. Fuel of the wrong quality can cause 
the engine to malfunction or stop by preventing 
the injection pump and injectors from operating 
as they should.
This can cause damage to the engine and, 
possibly, injury.

Hazardous gases

Start the engine only in a well ventilated area. 
The exhaust fumes contain carbon monoxide 
and nitric oxides, which are toxic.
When running the engine in a closed area, 
there must be an efficient device for dissipating 
exhaust fumes and crankcase gases.

Starter lock

If the control panel is not fitted with a key 
operated switch, there should be a lock on the 
engine room to prevent unauthorised starting of 
the engine.
Alternatively, a lockable on/off master switch or 
battery master switch can be used.

Starting spray

Never use starting spray or similar to help you 
start the engine. This can cause an explosion in 
the intake manifold and possible injury.

Running

The engine must not be run in environments 
where there is a risk for explosion as all of the 
electrical or mechanical components can 
generate sparks.
Approaching a running engine always poses a 
safety risk. Parts of the body, clothes or 
dropped tools can get caught in rotating parts 
such as the fan and cause injury.
Therefore, all rotating parts and hot surfaces 
must be shielded as much as possible to aid 
personal safety.

8

2003-10:1

Safety precautions for handling 

materials

Fuel and oil

All fuels and lubricants and many chemicals are 
inflammable. Always follow the instructions on 
the relevant packaging.
All work on the fuel system must be done with 
the engine cold. Fuel leaks and spillage on hot 
surfaces can cause fire.
Store soaked rags and other inflammable 
materials safely so as to avoid spontaneous 
combustion.

Batteries

The batteries contain and emit oxyhydrogen 
gas, particularly during charging, and this gas is 
inflammable and highly explosive. Therefore, 
there must be no smoking, naked flames or 
sparks near the batteries or the battery 
compartment.
Incorrect connection of a battery cable or jump 
lead can cause a spark, which in turn can 
cause the battery to explode.

Chemicals

Most chemicals such as glycol, corrosion 
inhibitor, inhibiting oils, degreasing agents, etc. 
are hazardous to health. Always follow the 
safety precautions on the relevant packaging.
Some chemicals, such as inhibiting oil, are also 
inflammable.
Store chemicals and other materials which are 
hazardous to health in approved containers, 
marking them clearly and storing them where 
they are inaccessible to unauthorised persons. 
Always hand in leftover or used chemicals to an 
authorised waste disposal contractor.

Safety precautions for care and 

maintenance

Stop the engine

Always stop the engine before maintenance 
and servicing unless stated otherwise.
Prevent unwanted starting by taking out the 
ignition key where applicable and 
disconnecting the power using the master 
switch or battery master switch and locking 
them. Also put up a warning sign somewhere 
appropriate, indicating that work is in progress 
on the engine.
Working with a running engine always poses a 
safety risk. Parts of the body, clothes or 
dropped tools can get caught in rotating parts 
and cause injury.

Hot surfaces and fluids

There is always a risk of sustaining burns when 
an engine is hot. Therefore, take care not to 
come into contact with manifolds, the turbo, the 
sump, hot coolant and oil in pipes and hoses.

Lifting the engine

The engine lifting eyes must be used when 
lifting the engine. Check first that your lifting 
devices are in good condition and of the correct 
size to lift the weight.
Extra equipment on the engine can alter the 
centre of gravity, which is why you may need 
additional lifting devices to balance the engine 
correctly and lift it safely.
Never work underneath a suspended 
engine!

2003-10:1

9

Batteries

The batteries contain a highly corrosive 
electrolyte (sulphuric acid). Take care to 
protect your eyes, skin and clothes when 
charging or handling batteries. Wear protective 
gloves and goggles.
If the acid splashes on your skin, wash it off 
with soap and copious amounts of water. If acid 
splashes in your eyes, flush them immediately 
with copious amounts of water and contact a 
doctor.
Dispose of used batteries through an 
authorised waste disposal contractor.

Electrical system

The engine must be stopped and the power 
disconnected using the master switch or 
battery master switch before working on the 
electrical system.
External power supplies to extra equipment on 
the engine must also be disconnected.

Electric welding

When carrying out welding work close to and 
on the engine, remove the battery leads and 
the leads to the alternator. Also remove the 
multi-pin connector to the control unit.
Connect the weld clamp to the component to be 
welded and close to the welding point, never to 
the engine or in such a manner that the current 
can pass over to a mounting.
When you have finished welding, connect the 
leads to the alternator and control unit before 
connecting the batteries.

Lubrication system

Hot oil can cause burns and skin irritation. 
Therefore, avoid skin contact with hot oil. 
Make sure that there is no pressure in the 
lubricating system before starting work on it. 
Never start or run the engine with the oil filler 
cap removed, as this may cause oil to be 
thrown out. 
Dispose of used oil through an authorised 
waste disposal contractor.

Cooling system

Never open the coolant filler cap if the engine is 
hot. Hot coolant or steam may spray out and 
cause burns.
If you have to open or remove a cooling system 
component when the engine is hot, open the 
cap very carefully and slowly to relieve the 
system pressure before removing the cap. 
Wear gloves as the coolant is still very hot.
Dispose of used coolant through an authorised 
waste disposal contractor.

Fuel system

Always wear gloves when looking for leaks or 
carrying out any other work on the fuel system. 
Also wear protective goggles when testing 
injectors.
Fuel escaping at high pressure can penetrate 
tissues and cause serious injury.
Never use non-genuine parts in the fuel and 
electrical systems as genuine parts are 
designed and manufacture to minimise the risk 
of fire and explosion.

Before starting

Fit all removed shields before starting the 
engine again. Check that you have not left any 
tools or other objects on the engine.
Never start the engine without the air filter 
fitted. There is a risk of objects being sucked 
into the impeller or of injury if you come into 
contact with it.

10

TYPE DESIGNATIONS

The engine type designation indicates, in the form of a code, the type of 

engine, its size and applications, etc.
The type designation and engine serial number are indicated on a type plate 

affixed to the right-hand side cover behind the oil cleaner. The engine number 

is also stamped in the top of the engine block in front of the first cylinder 

head. Refer to the illustration.
Engines which hold certification in respect of smoke and emissions are fitted 

with a plate which indicates the documents in accordance with which they are 

certified. This plate is located on rocker cover number two viewed from the 

front.

DI 9 56 A 06 E

Type

DC

Supercharged diesel engine with air-cooled charge air cooler.

DI

Supercharged diesel engine with liquid-cooled charge air cooler

Displacement in whole dm

3

Performance and certification code

Indicates, together with the application code, the normal gross engine 

output.

The actual output setting of the engine is indicated on the engine card.

Application

A

For general industrial use

Variant 01-99

Type of regulator

E

Electronically controlled governor (DEC2).

2003-10:1

The illustrations show a normal version of a DI9 56 engine.

Your engine may have different equipment from that illustrated.

1.

Turbocharger

2.

Engine number,
stamped into the engine 

block

3.

Thermostat housing with 

outlet 

4.

Type plate

5.

Automatic belt tensioner

6.

Coolant pump

7.

Oil cooler

8.

Draining, engine oil

9.

Oil filter

10.

Charge air cooler

11.

Fuel filter

12.

Draining, coolant

13.

Starter motor

14.

Oil cleaner

15.

Oil dipstick

16.

Extra coolant pump

17.

Alternator

18.

Injection pump with EDC

19.

Connector panel DEC2

4

18

6

3

8

9

10

13

7

17

11

2

1

16

12

14

15

5

19

12

DEC2 CONTROL SYSTEM

This engine has an injection pump with an electromagnetic actuator which 

adjusts the control rack to give the correct amount of fuel.
The system which controls the pump is called DEC2 (Digital Engine Control, 

generation 2).
The control unit (DEC2) continuously receives signals from sensors for 

engine speed, charge air temperature and pressure, coolant temperature, oil 

pressure, throttle pedal position and control rod travel in the injection pump. 

Using this input data and a control program, the correct amount of fuel for the 

current operating conditions can be calculated.
The system's sensors may be used only for DEC2, not for other instruments 

or other monitoring purposes.
The control unit contains monitoring functions to protect the engine in the 

event of a fault which would otherwise damage it. Faults and the more 

important monitoring functions are indicated on the control unit in the form 

of light emitting diodes. See illustration on page 15 for a description.
In the event of a fault Power - or Shutdown on the control unit comes on as 

well as the main indicator lamp on the main supply box and instrument panel.
If a fault has been indicated on the main indicator lamp, the operator can 

determine the cause of the fault with the help of the LEDs on the control unit 

and the troubleshooting schedule on page 18, and carry out the required 

investigation and remedy.
Depending on the nature of the fault, the control system can take various 

steps to protect the engine, reduce its power, allow it to run at a constant low 

speed or, if a functional fault is detected, the engine will be switched off 

automatically (Shutdown).
In order to read fault indications on the LEDs, there is a lamp test/fault code 

switch in the main supply box installed near the control unit.
A PC based program is also available to make it easier for service personnel 

to detect and rectify faults which may arise and to adjust certain parameters in 

the driving program.
Only authorised personnel are allowed to carry out diagnostic procedures 

and program changes.
The locations of the sensors and monitors which send signals to the control 

unit will be evident from the figures on pages 13 and 14.
There is a description of the functions of the LEDs during normal operation 

on page 15.
There are descriptions of LED indications when a fault has occurred and the 

action taken in the case of Power- and Shutdown on page 16.
Troubleshooting and fault code reading are described on pages 17 and 18. 

2003-10:1

Location of sensors for DEC2 on DI9

Location of sensors for DEC2 on DI9

1.

Connection of lead to charge air 

pressure sensor

2.

Charge air temperature sensor

3.

Oil pressure monitor

4.

Connector panel

5.

Coolant temperature sensor

6.

Rotation speed sensors

14

Location of sensors for DEC2 on DC9

1.

Connection of lead to charge air 

pressure sensor

2.

Charge air temperature sensor

3.

Oil pressure monitor

4.

Connector panel

5.

Coolant temperature sensor

6.

Rotation speed sensors

2003-10:1

LED functions during normal operation

Note:

The lamp test/fault code switch should not be 

depressed. All LEDs come on briefly when 

the control unit is powered up.

CONTROL STATUS

<

The LED flashes continuously when the control 

unit is supplied with current, regardless of 

whether the engine is running or not.

SHUTDOWN

P

The LED is out.

STARTING

<

The LED lights up as soon as the engine starts to 

rotate during an attempt to start it, follows the 

programmed starting sequence until it has been 

completed and then goes out.

RUNNING

<

The LED comes on when the engine has started 

and the "Starting"-LED goes out. It remains on 

until the engine is stopped.

TORQUE LIMIT

<

The LED comes on when the control unit senses 

that the engine has received the maximum 

permissible quantity of injected fuel according 

to its power curve. This means 100% power 

output at the current rpm. If the load increases, 

engine rpm will decrease.

BOOST LIMIT

<

The LED comes on when the control unit's 

smoke limiter limits the maximum fuel quantity. 

Operation of the smoke limiter is dependent on 

the charge air pressure. 

POWER

-

P

The LED remains out during normal operation 

as long as no fault is detected by the control 

unit. See next page for the procedure to be 

adopted in the event of a fault.

POWER

+

<

If the control unit is programmed so that the 

engine can be operated with more than one 

power/torque curve (map), the following 

applies.
The LED comes on when the engine is operated 

at more than 100% power output (MAP 2). It 

goes out when the engine returns to the 100% 

power output curve (MAP 1) or when the power 

requirement drops to below 100%.

16

Action when a fault arises

LED indications in the event of a fault

Note:

It is indicated on the main indicator lamp in 

the main supply box and on the instrument 

panel. The lamp test/fault code switch should 

not be depressed. 

CONTROL STATUS

<

The LED continues to flash even if a fault has 

occurred as long as the control unit is powered 

up. 

POWER

-

<

If the LED comes on, the control unit has 

detected a fault condition which could result in 

engine damage if allowed to continue.
The control unit automatically reduces the 

power to a special level if this function has 

been selected.
Action
If possible reduce engine speed to idle 

and conduct troubleshooting according to 

instructions on page 17 and the chart on 

page 18.

SHUTDOWN

<

The LED comes on and the engine is switched 

off automatically in the event of a fault so 

serious that the engine could be damaged if it is 

still in operation.
Action: Conduct troubleshooting according to 

instructions on page 17 and the chart on 

page 18.
If the engine has not stopped, reduce engine 

speed to idle and carry out troubleshooting.

 

 

 

 

 

 

 

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