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Deutz 912 and 913 series engine operation manual
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Operation Manual
912
913
26 472

● Please read and observe the information
given in this Operation Manual. This will
enable you to avoid accidents, preserve the
manufacturer’s warranty and maintain the
engine in peak operating condition.
● This engine has been built exclusively for
the application specified in the scope of
supply, as described by the equipment manu-
facturer and is to be used only for the
intended purpose. Any use exceeding that
scope is considered to be contrary to the
intended purpose. The manufacturer will
not assume responsibility for any damage
resulting therefrom. The risks involved are
to be borne solely by the user.
● Use in accordance with the intended pur-
pose also implies compliance with the con-
ditions laid down by the manufacturer for
operation, maintenance and servicing. The
engine should only be operated by person-
nel trained in its use and the hazards in-
volved.
● The relevant accident prevention guidelines
and other generally accepted safety and
industrial hygiene regulations must be ob-
served.
● When the engine is running, there is a risk of
injury through:
- turning/hot components
- engines with positive ignition
- ignition systems (high electrical voltage)
You must avoid contact at all times!
● Unauthorized engine modifications will in-
validate any liability claims against the manu-
facturer for resultant damage.
Manipulations of the injection and regulating
system may also influence the performance
of the engine, and its emissions. Adherence
to legislation on pollution cannot be guaran-
teed under such conditions.
● Do not change, convert or adjust the cooling
air intake area to the blower.
The manufacturer shall not be held respon-
sible for any damage which results from
such work.
● When carrying out maintenance/repair op-
erations on the engine, the use of DEUTZ
original parts is prescribed. These are spe-
cially designed for your engine and guaran-
tee perfect operation.
Non-compliance results in the expiry of the
warranty!
● Maintenance and cleaning of the engine
should only be carried out when the engine
is switched off and has cooled down.
You must ensure that the electrical systems
have been switched off and the ignition key
has been removed.
Accident prevention guidelines concerning
electrical systems (e.g. VDE-0100/-0101/-
0104/-0105 Electrical protective measures
against dangerous touch voltage) are to be
observed.
When cleaning with fluids, all electrical com-
ponents are to be covered impermeably.
Safety guidelines / Accident prevention

Please enter the engine serial number here. This
number should be quoted when inquiring about
Customer Service, Repairs or Spare Parts (see Section
2.1).
All rights reserved. Technical modifications required
to improve our engines are reserved with regard to
specification data and other technical information
contained in this Operation Manual. No parts of this
Manual may be reproduced in any form or by any
means without our written approval.
0297 9690 en
Engine
Serial Number
Operation Manual
912
913

1
Foreword
Dear Customer,
Air / liquid-cooled DEUTZ engines are designed for a
large number of applications. Consequently, a wide
range of variants are offered to meet the requirements
of specific cases.
Your engine is appropriately equipped for the
installation concerned, which means that not all of
the components described in this Operation Manual
are necessarily mounted to your engine.
We have endeavoured to highlight any differences so
that you will be able to locate the operating and
maintenance instructions relevant to your engine
quickly and easily.
Please read this Manual before starting your engine,
and always observe the operating and maintenance
instructions.
We are available to help with any additional inquiries
Sincerely,
DEUTZ AG

1 General
2 Engine Description
2.1 Model
2.1.1 Rating Plate
2.1.2 Rating Plate Location
2.1.3 Engine Serial Number
2.1.4 Cylinder Numbering
2.1.5 Direct Injection
2.1.6 Two-stage Combustion
2.2 Engine Illustrations
2.2.1 Service Side F4L 912
2.2.2 Exhaust Side F4L 912
2.2.3 Service Side BF4L 913
2.2.4 Exhaust Side BF4L 913
2.3 Lube Oil Circuit
2.3.1 Lube Oil Circuit FL 912/913
2.4 Fuel System Schematic
2.4.1 Fuel Circuit
2.5 Engine Cooling
2.5.1 Regulation of Coolant Flow using the
Exhaust Thermostat
2.5.2 Regulation of Coolant Flow using the
Exhaust Thermostat and Solenoid
3 Engine Operation
3.1 Commissioning
3.1.1 Adding Engine Oil
3.1.2 Filling Oil Bath Air Cleaner
3.1.3 Adding Fuel
3.1.4 Ventilation
3.1.5 Other Preparations
3.1.6 Additional Maintenance Work
3.1.7 Selector Switch for Oil Heater
3.2 Starting
3.2.1 Electric Starting
3.3 Monitoring Systems
3.3.1 Engine Oil Pressure
3.3.2 Engine Temperature
3.3.3 Cooling Fan Drive
Index
3.4 Stopping
3.4.1 Mechanical Shutdown
3.4.2 Electrical Shutdown
3.5 Operating Conditions
3.5.1 Winter Operation
3.5.2 High Ambient Temperatures, High Altitude
4 Operating Media
4.1 Lube Oil
4.1.1 Quality Grade
4.1.2 Viscosity
4.2 Fuel
4.2.1 Quality Grade
4.2.2 Winter-Grade Fuel
5 Routine Maintenance
5.1 Maintenance Schedule
5.2 Maintenance Chart
5.3 Maintenance Work Completed
6 Service and Maintenance
6.1 Lube Oil System
6.1.1 Oil Change Intervals
6.1.2 Checking Oil Level / Changing Oil Level
6.1.3 Changing Oil Filter
6.1.4 Changing the Partial-Flow Oil Filter Insert
6.2 Fuel System
6.2.1 Changing Fuel Filter
6.2.2 Fuel Precleaner Cleaning the Fuel Filter
6.3 Cooling System
6.3.1 Cleaning Intervals
6.4 Combustion Air Filter
6.4.1 Cleaning Intervals
6.4.2 Emptying Cyclone Type Precleaner
6.4.3 Cleaning Oil Bath Air Cleaner
6.4.4 Dry Type Air Cleaner
6.5 Belt Drives
6.5.1 Checking V-Belts
6.5.2 Changing the Fan V-Belt
6.5.3 Tensioning Alternator Belts
6.5.4 Changing Alternator Belts
6.5.5 Checking Warning System
6.5.6 Tensioning and Changing Air Compressor
V-Belts
6.5.7 Air Compressor Design with Double
V-Belt
6.6 Adjustments
6.6.1 Checking / Adjusting Valve Clearance
6.7 Accessories
6.7.1 Battery
6.7.2 Three-Phase Alternator
6.7.3 Lifting Tackle
6.8 Cleaning the Engine
6.8.1 Cleaning the Engine
6.9 Additional Maintenance
6.9.1 Checking the Mountings
6.9.2 Checking the Function of the
Heating Pipe
6.9.3 Checking the Function of the Flame
Glowing System
7 Faults, Causes and Remedies
7.1 Diagnosis Chart
8 Engine Preservation
8.1 Preservation
8.1.1 Preserving Engine
8.1.2 Removing Engine Preservatives
9 Technical Specifications
9.1 Engine Specifications and Settings
9.2 Torque Wrench Settings
9.3 Tools
10 Service

26 472

1
DEUTZ Diesel Engines
are the product of many years of research and
development. The resulting know-how, coupled
with stringent quality standards, guarantee their
long service life, high reliability and low fuel
consumption.
It goes without saying that DEUTZ Diesel Engines
meet the highest standards for environmental
protection.
Service
Please contact one of our authorized service
representatives in the event of breakdowns or for
spare parts inquiries. Our trained specialists will
carry out repairs quickly and professionally, using
only genuine spare parts.
Original parts from DEUTZ AG are always produced
in accordance with state-of-the-art technology.
Please turn to the end of this manual for further
service information.
General
!
Care and Maintenance
Sound care and maintenance practices will ensure
that the engine continues to meet the requirements
placed on it. Recommended service intervals must
be observed and service and maintenance work
carried out conscientiously.
Special care should be taken under abnormally
demanding operating conditions.
Asbestos
DEUTZ original parts are asbestos-
free.
Safety
This symbol is used for all safety
warnings. Please follow them
carefully. The attention of operating
personnel should be drawn to these
safety instructions. General safety
and accident prevention regulations laid down by
law must also be observed.
Beware of Running Engine
Shut the engine down before carrying out mainte-
nance or repair work. Ensure that the engine cannot
be accidentally started. Risk of accidents.
When the work is complete, be sure to refit any
panels and guards that may have been removed.
Never fill the fuel tank while the engine is running.
Observe industrial safety regulations when running
the engine in an enclosed space or underground.
California
Proposition 65 Warning
Diesel engine exhaust and some of its consti-
tuents are known to the State of California to
cause cancer, birth defects, and other repro-
ductive harm.

1

2
Engine Description
2.1 Model
2.2 Engine Illustration
2.3 Lube Oil Circuit
2.4 Fuel System Schematic
2.5 Engine Cooling

2
25 611 2
The engine serial number D is stamped on the
crankcase as well as the rating plate.
24 587 1 24 552 1
2.1.2 Rating Plate Location 2.1.3 Engine Serial Number
Engine Description 2.1 Model
2.1.1 Rating Plate
The model A, the engine serial number B and the
performance data are stamped on the rating plate.
The model and engine serial number must be given
when ordering parts.
The rating plate C is attached to the crankcase;
depending on the design, a second rating plate may
be attached to the air duct.
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$27.99
The Deutz 912 913 operation manual includes the following sections:
- Foreword
- Index
- General
- Engine description
- Engine operation
- Operating media
- Routine maintenance
- Service and maintenance
- Faults, causes and remedies
- Engine preservation
- Technical specifications
- Service
This manual covers the following engines: F3L912, F4L912, F5L912, F6L912, F3L913, F4L913, F6L913, BF4L913, BF6L913, and BF6L913C.