OPERATION MANUAL
Be sure to read this manuaI for safe and
proper operation.
Store this manual carefully after use.
Congratulations on your choice of
YANMAR product from YANMAR DIESEL ENGINE CO., LTD.
This manual describes operation, periodic inspection and
maintenance servicing for the ENGINE manufactured by
YANMAR DIESEL ENGINE CO., LTD.
Please read this manual carefully before use, and operate
your engine properly under the optimum conditions, should
you have any questions or concerns, please do not hesitate to
contact your nearest dealer or distributor.
California
Proposition 65 Warning
California
Proposition 65 Warning
Diesel engine exhaust and some of its
constitutions are known to the State of
California to cause cancer, birth defects,
and other reproductive harm.
Battery posts, terminals, and related
accessories contain lead and lead
compounds, chemicals known to the
State of California to cause cancer and
reproductive harm.
Wash hand after handling
YANMAR
MARINE DIESEL ENGINE
MODELS :
6LYA-STP, 6LY2A-STP
OPERATION MANUAL
Thank you for purchasing the YANMAR Marine Diesel Engine.
[INTRODUCTION ]
● This Operation Manual describes the operation, maintenance and inspection
of the 6LYA-STP, 6LY2A-STP Yanmar marine diesel engines.
● Read this Operation Manual carefully before operate the engine to ensure that
the engine is used correctly and that it stays in the best possible condition.
● Keep this Operation Manual in a convenient place for easy access.
● If this Operation Manual is lost or damaged, order a new one from your dealer
or distributor.
● Make sure this manual is transfered to subsequent owners. This manual
should be considered a permanent part of the engin and remain it.
● Constant efforts are made to improve the quality and performance of Yanmar
products, so some details included in this Operation Manual may differ slightly
from your engine. If you have any questions about such difference, please
contact your Yanmar Dealer or Distributor.
● For detailed information marine gears other than model KMH6A / KMH6A1,
refer to the Marine Gear Operation Manual.
Operation Manual
(Marine Engine)
Models
6LYA-STP, 6LY2A-STP
Code No.
49961-205581
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1
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INDEX
page No.
INTRODUCTION ……………………………………………………………………………………………………1
INDEX ……………………………………………………………………………………………………………………2
1. FOR SAFE OPERATION ………………………………………………………………………………3~6
1.1 Warning Symbols …………………………………………………………………………………………………3
1.2 Safety Precautions ……………………………………………………………………………………………4~5
1.3 Location of product safety Labels ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯6
2. EXPLANATION OF PRODUCT ……………………………………………………………………7~16
2.1 Use, Driving System etc. …………………………………………………………………………………………7
2.2 Engine Specificitions ……………………………………………………………………………………………8
2.3 Names of Parts ……………………………………………………………………………………………………9
2.4 Major Servicing Parts……………………………………………………………………………………………10
2.5 Control Equipment …………………………………………………………………………………………11~17
2.5.1 Control panel ……………………………………………………………………………………………11~15
2.5.2 Remote Control Handle ……………………………………………………………………………………16
3. OPERATION …………………………………………………………………………………………………17~32
3.1 Fuel oil, Lube oil & Cooling Water…………………………………………………………………………17~19
3.1.1 Fuel …………………………………………………………………………………………………………17
3.1.2 Lube oil ………………………………………………………………………………………………………18
3.1.3 Cooling Water …………………………………………………………………………………………18~19
3.2 Before lnitial Operation ……………………………………………………………………………………20~24
3.2.1 Supplying Fuel and Bleeding Air in the Fuel System …………………………………………………20
3.2.2 Supplying Engine Lube oil …………………………………………………………………………………21
3.2.3 Supplying lube oil to marine gear (for Yanmar model : KMH6A KMH6A1) …………………………22
3.2.4 Supplying Cooling Water ………………………………………………………………………………22~23
3.2.5 Starting after storage or new engine ……………………………………………………………………23
3.2.6 Checking and Resupplying Lube Oil and Cooling Water ………………………………………………24
3.3 How to Operate ……………………………………………………………………………………………25~30
3.3.1 Inspection before Starting ……………………………………………………………………………25~27
3.3.2 How to Start the Engine ………………………………………………………………………………27~28
3.3.3 Shifting ………………………………………………………………………………………………………29
3.3.4 Checking during Operation ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯29~30
3.3.5 Stopping the Engine ………………………………………………………………………………………30
3.4 Long Term Storage ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯31~32
4. MAINTENANCE & INSPECTION ………………………………………………………………33~45
4.1 General Inspection Rules ………………………………………………………………………………………33
4.2 Periodic Inspection …………………………………………………………………………………………34~35
4.3 Periodic Inspection Items …………………………………………………………………………………36~45
4.3.1 Inspection after Initial 50 Hrs. Operation ……………………………………………………………36~37
4.3.2 Inspection Every 50 Hours ……………………………………………………………………………37~38
4.3.3 Inspection after First 250 Hrs. ……………………………………………………………………………39
4.3.4 Inspection Every 250 Hrs. (or 1 yr.) …………………………………………………………………39~43
4.3.5 Inspection Every 500 Hrs. (or 2 yrs.) ……………………………………………………………………43
4.3.6 Inspection Every 1000 Hrs. (or 4 yrs.) ………………………………………………………………43~44
4.3.7 Inspection Every 2000 Hrs.……………………………………………………………………………44~45
5. TROUBLESHOOTING …………………………………………………………………………………46~47
6. SYSTEM DIAGRAMS …………………………………………………………………………………48~51
6.1 Piping diagram …………………………………………………………………………………………………48
6.2 Wiring diagram ………………………………………………………………………………………………49~51
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2
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1. FOR SAFE OPERATION
Following the precautions described in this manual will enable you to use this engine with complete
satisfaction. Failure to observe any of the rules and precautions, however, may result in injury,
burns, fires, and engine damage. Read this manual carefully and be sure you fully understand it
before beginning operation.
1.1 Warning Symbols
These are the warning signs which are used in this manual and on the products.
Pay special attention to them.
DANGER
DANGER- Indicates an imminently hazardous situation
which, if not avoided, WILL result in death or serious
injury.
WARNING
WARNING- Indicates a potentially hazardous situation which, if not avoided, COULD result in death or
serious injury.
CAUTION
CAUTION- Indicates a potentially hazardous situation
which, if not avoided, MAY result in minor or moderate
injury. It may also be used to alert against unsafe
practices.
● The descriptions captioned by [NOTICE] are for the particularly important cautions for
handling. If you ignore them, the performance of your machine may deteriorate leading to
trouble.
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3
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1.2 Safety Precautions
(Observe these instructions for your own safety.)
■ Precautions
DANGER
for Operation
Burns from Scalding
● Never remove the filler cap of the fresh water cooler while the engine is still hot.
Steam and hot water will spurt out and seriously burn you. Wait until the water
temperature has dropped, then wrap a cloth around the cap and loosen it slowly.
● After inspection, refasten the filler cap firmly. If the cap is not secure, steam or
scalding water may be emitted during operation causing burns.
DANGER
Proper Ventilation of the Battery Area
● Be sure the area around the battery is well-ventilated and there is nothing which
could start a fire. During operation and charging, hydrogen gas is emitted from
the battery and can be easily ignited.
DANGER
Fires from Oil Ignition
● Be sure to use the correct type of fuel when refueling.
Mistakenly filling with gasoline or the like will result in ignition.
● Be sure to stop the engine before refueling.
If you spill fuel, wipe such spillage carefully.
● Never place oils or other flammable material close to the engine as this could
result in ignition.
WARNING
Exhaust Gas Poisoning
● Be sure to establish good ventilation in the engine room with windows, vents, or
other ventilation equipment. Check again during operation to be sure that ventilation is good. Exhaust gas contains poisonous carbon monoxide and should
not be inhaled.
WARNING
Moving Parts
● Do not touch the moving parts of the engine (propeller shaft, V-belt, PTO-pulley,
etc.) during operation or let your clothing get caught in them as this can result in
injury.
● Never operate the engine without the covers on the moving parts.
● Check before starting the engine to see that any tools or cloths used in maintenance have been removed from the area.
CAUTION
Burns from Contact with Hot Engine Parts
● The whole engine is hot during operation and immediately after stopping.
The turbocharger, exhaust manifold, exhaust pipe, and engine are very hot. Never
touch these parts with your body or clothing.
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4
_
WARNING
Alcohol
● Never operate the engine while you are under the influence of alcohol or when
you are ill or feel unwell as this results in accidents.
■ Safety
DANGER
Precautions for Inspection
Battery Fluid
● Battery fluid is diluted sulfuric acid. It can blind you if it gets in your eyes, or burn
your skin. Keep the fluid away from your body. Wash it off immediately with a
large quantity of fresh water if you get any on you.
WARNING
Fire due to Electric Short-Circuits
● Always turn off the battery switch or detach the earth cable (--) before inspecting
the electrical system. Failure to do so could cause short-circuiting and fires.
WARNING
Precautions for Moving Parts
● Stop the engine before you service it. lf you must inspect while the engine is
operating, never touch moving parts. Keep your body and clothing well clear of
all moving parts as this could result in injury.
CAUTION
Precautions for Removing Hot Oil and Water to
Prevent Burns
● If extracting oil from the engine while it is still hot, do not let the oil splash on you.
● Wait until the temperature has dropped before removing cooling water from the
engine to avoid getting scalded.
[NOTICE]
Do not alter the diesel engine.
Rebuilding the engine or altering parts to increase the speed or the amount of fuel discharged,
etc. will make operation unsafe, and result in damage and shortening of engine life.
[NOTICE]
Disposal of waste materials
●Put oil or liquids to be disposed in a container. Never dispose of waste oil or other fluids
outside, in a sewer, river, or the sea.
●Treat waste materials safely observing all regulations and laws. Ask a waste recovery
company to collect and dispose of it.
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5
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1.3 Location of Product Safety Labels
To insure safe operation, warning device labels have
been attached.
Warning Device Labels, Parts Numbers
Their location is shown in the
No.
Part Code No.
diagram below. Keep the labels from becoming dirty
①
128296-07300
or torn and replace them if they are lost or damaged.
②
120324-07240
Also, replace labels when par ts are replaced,
③
128296-07260
ordering them in the same way as for the parts.
④
128296-07350
Name plate
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6
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2. Explanation of Product
2.1 Use, Driving System, etc.
In the case of engine with marine gear, connect the propeller shaft to the marine gear
output shaft.
In order to obtain full performance from your engine, it is imperative that you check the
size and structure of the hull and use a propeller of the appropriate size.
The engine must be installed correctly with safe cooling water and exhaust piping and
electrical wiring.
To handle the drive equipment, driven systems (including the propeller) and other
onboard equipment, be sure to observe the instructions and cautions given in the
operation manuals supplied by the shipyard and equipment manufacturers.
The laws of some countries may require hull and engine inspections, depending on the
use, size and cruising area of the boat.
The installation, fitting and surveying of this engine all require specialized knowledge and
engineering skills.
Consult Yanmar's local subsidiary in your region or your distributor or dealer.
WARNING
Never modify this product or release the limit devices (which limit engine speed, fuel
injection quantity, etc.). Modification will impair the safety and performance of the
product and functions and shorten the product life.
Please note that any troubles arising from modification of the product will not be
covered by our warranty.
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7
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2.2 Engine Specifications
6LY2A-STP
Engine model
6LYA-STP
Type
Vertical water cooled 4-cycle diesel engine
No. of clinders
6
Bore × Stroke
Displacement
mm
Fuel stop power at crankshaft
kw(hp)/rpm
Cont. power at crankshaft.
kw(hp)/rpm
High idling
rpm
Low idling
rpm
100×110
105.9×110
5.184
272
* (370) / 3300
**264 (359) / 3300
5.813
324
* (440) / 3300
**315 (427) / 3300
213 (290) / 3100
257 (350) / 3100
3720±25
3670±25
700±25
Combustion system
Direct injection
Starting system
Electric starting
Cooling system
Fresh water cooling
Forced lubrication system with gear pump
Lubrication system
Counter clockwise (viewed from flywheel side)
Direction of rotation (crankshaft)
Lube oil capacity
20
All
18(including oil filter capacity)(oil pan 16.4)
Oil pan
Cooling water capacity
Engine:20, Subtank :1.5
Model
Turbochager
RHC7W (IHI made)
Type
Water cooled turbine housing
Dry mass(gear less)
535
530
kg
Recommended battery capacity
12V×120Ah
Recommended type of remote control
handle
Single lever type
Engine installation style
On the flexible engine mount
(Note) 1. Rating condition : ISO 3046-1, 8665 2. 1hp = 0.7355 kW
3. Fuel condition : Density at 15˚C = 0.860, Fuel oil temperature *: 25˚C at the fuel injection pump inlet
**: ISO 8665 (Fuel oil temp. 40˚C at the fuel injection pump inlet)
●
Marine gear (Option)
●
For 6LYA-STP
Model
Type
Reduction ratio
Lube oil
capacity
●
1.58
KMH6A
HSW800A2
MG5050A
10°
Angle
8°
Angle
wet and multi-disc
10°
Angle
1.92
Full
4.0
Effective
0.3
1.2 1.4 1.6 2.0 2.5 1.12 1.5 1.8 2.04 2.5
2.26
Refer to the maker's manual
For 6LY2A-STP
Model
Type
Reduction ratio
Full
Lube oil
capacity
Effective
KMH6A1
MG5061A
10°Angle
7°Angle
wet and multi-disc
1.58
1.92
2.26 1.13 1.54 1.75 2.00 2.47
4.0
Refer to the maker's
manual
0.3
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8
_
(Note)
Reduction ratio :
Both ahead and astern
2.3 NAMES OF PARTS
Lube oil filter
Fresh water tank
Turbo charger
Fresh water filler cap
Inter cooler
Lube oil cooler
for marine gear
Fuel oil filter
Fuel oil injection
pump
Lube oil cooler
Marine gear
Engine oil filler cap
Lube oil filter
Fresh water filler cap
Fresh water tank
Turbo charger
Fuel oil filter
Dip stick
Marine gear
Fresh water cooler
Starter motor
Alternator
Sea water pump
V-belt
〈Note〉 This illustration shows Yanmar marine gear (Model : KMH6A) when it has been attached.
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9
_
2.4 Major Servicing Parts
Name of Part
Function
●Fuel filter
Removes dust and water from fuel. Drain the filter periodically, (there is a
drain plug at the bottom). The internal element (filter) should be changed
periodically.
●Fuel feed pump
Feeds fuel to the fuel injection pump.
Equipped with mechanical pump attached with the fuel injection pomp.
●Engine oil filler cap
Filler port for engine lube oil.
●Lube oil filters
(Full-flow & by-pass)
Filters fine metal fragments and carbon from the lube oil.
The oil through the full flow filter is sent to the engine's moving parts and
another ones through the by-pass filter returns to oil pan.
[Cooling Water
System]
●Fresh water cooler
○Filler cap
○Sub tank
○Rubber hose
This engine has two cooling water systems (for fresh water & for seawater).
Fresh water flows from the fresh water tank into the fresh water cooler, where
the fresh water is cooled by sea water.
The fresh water then flows into the cylinder block throgh the fresh water pump.
It further cools the turbocharger and goes back to the fresh water tank.
The fresh water cooler is a heat exchanger using sea water.
The filler cap mounted on the fresh water tank has a pressure regulating
valve.
When the cooling water temp. rises and then the pressure rises inside the
fresh water tank, the pressure regulating valve releases vapor and hot water
overflow to the sub tank.
The hose is connected betweev the filler cap and sub tank. Vapor and hot
water discharged to the sub tank.
When the engine stops and cooling water cools, the pressure in the cooling
water tank also drops to negative pressure. The filler cap valve then opens to
suck water back from the sub tank. This minimizes cooling water
consumption.
●Fresh water pump
The centrifugal water pump circulates fresh cooling water inside the engine.
The pump is driven by the V-belt.
●Seawater pump
The rubber impeller-type pump is driven by gears. Do not operate it without
seawater, due to damage the impeller.
●Oil cooler
This heat exchanger cools high temp. engine oil by seawater.
●Turbocharger
The pressurized intake air feeding device: the exhaust gas turbine is rotated
by the exhaust gas, and the power is used to rotate the blower. This
pressurizes the intake air for sending to the cylinder.
●Inter-cooler
This heat exchanger cools the pressurized intake air from the turbocharger
with seawater.
●Anticorrosive zinc
The metal area of the seawater cooling system is prone to electrical
corrosion. The anti-corrosive zinc is installed in the oil cooler, inter-cooler,
etc. to prevent this.
The anti-corrosive zinc is itself reduced over time by electrical corrosion, so it
must be replaced at fixed intervals before it is completely consumed in order
to ensure that the metal area of the seawater cooling system remains fully
protected.
●Name plate
Name plates are provided on the engine and have the model, serial number
and other data.
●Starter
Starter powered by the battery.
●Alternator
Rotates by belt drive, generates electricity and charges the battery.
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10
_
2.5 Control Equipment
The control equipment consists of the control panel and remote control handle, which are
connected by the wires and cables to the control levers for remote control operation.
2.5.1 Control Panel (Optional)
The control panel has the following gauges and alarm devices (optional accessories):
No. Model
New B-type
New C-type
New D-type
7
Key switch (Starter switch)
●
●
●
8
Engine stop switch
●
●
●
10 Switch unit
Alarm buzzer
●
●
●
9
Alarm buzzer stop switch
●
●
●
11
IIIumination switch for meters
●
●
●
Battery not charging
●
●
●
C.W. high temperature
●
●
●
L.O. low pressure (engine)
●
●
●
C.W level
●
●
●
Exhaust
●
●
●
Boost
─
●
●
Tachometer with hour meter
●
●
●
LO. pressure meter
─
─
─
●
●
●
●
─
●
●
(optional)
●
(optional)
●
6
1
Alarm lamp unit
Tachometer unit
4
3
Sub meter unit
C.W. temperature meter
5
Boost meter (Turbo)
12 Clock unit
Quartz clock
● Avalable,
●
− Not avalable
New B-type
6
BATTERY
CHARGE
C.WATER
TEMP
LUB.OIL
PRESS.
9
1
20
10
0
11
BUZZER
STOP
ILLUML
ON
SET
OFF
30
x100/min
0 0 0 0 1
40
h 50
8
STOP
ENGINE HOURS
DIESEL
PREHEAT
GLOW
OFF ON
START
EXHAUST
C.WATER
LEVEL
10
2
_
11
_
7
●
New C-type
H
L
20
H
C
11
9
1
3
4
BUZZER
STOP
ILLUML
ON
SET
OFF
30
x100/m i n
10
40
0
50
C.W. TEMP
L.OILPRESS.
00001
ENGINE HOURS
OFF
ON
START
GLOW
BATTERY
CHARGE
C.WATER
TEMP
CLUTCH
OIL.P.
DIESEL
PREHEAT
LUB.OIL
FILTER
LUB.OIL C.WATER
LEVEL
PRESS.
8
STOP
7
EXHAUST
BOOST
2
6
●
10
New D-type
5
0
4
1 2 3
3
L
4
B O O ST
H
L.OILPRESS.
BATTERY
CHARGE
C.WATER
TEMP
LUB.OIL
PRESS.
CLUTCH
OIL.P.
DIESEL
PREHEAT
BOOST
C.WATER
LEVEL
C
1
20
H
BUZZER
STOP
ILLUML
ON
SET
OFF
8
30
x100/min
10
40
0
50
00 0 01
ENGINE HOURS
C.W.TEMP
STOP
OFF ON
GLOW
START
LUB.OIL
FILTER
H
M
EXHAUST
12
6
2
10
7
Available switches (for alarm) and senders (for meter) (attached with engine)
Senders
Switches
●
11
9
6LYA-STP
6LY2A-STP
Battery not charge
○
○
C.W.high temperature
○
○
L.O low pressure
○
○
C.W.level
×
△
Exhaust (C.S.W flow)
×
△
Boost
×
△
Tachometer
○
○
C.W. temperature
△
△
L.O.pressure
△
△
Boost
△
△
△
△
△
△
C.W.temp.
L.O. press.
For two stations
○ : Standard △ : Optional × : Not available
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12
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(1) Gauges and Equipment
Gauges & Equipment
Starter switch
Before starting
during operation
GLOW
OFF
ON
Release your
hold when
engine
STSRT engine is
started
Functions
OFF: The switch key can be inserted or removed.
All power is turned off.
O N: For engine operation. Gauges and alarm devices are turned on.
START: For engine starting. When the key is released after starting, it
moves automatically to ON.
GLOW: For the air heater (optional)
(Note) ●The engine cannot be stopped by the starter switch.
Engine stop switch
Press the button to stop the engine by fuel cut.
And continue to push the stop button until the engine has come to a
complete stop.
Alarm buzzer
The buzzer sounds if an abnormality arises.
See explanation under (2).
Warning lamps
The lamps come on when an abnormality arises.
See explanation under (2).
Buzzer stop switch
The switch is used to stop the buzzer noise temporarily. Do not turn the
buzzer off except when inspecting for an abnormality.
Illumination switch
Switch for lighting control panel.
Hour meter
Total operation hours are shown in the window below the tachometer.
Refer to the figure as a standard for periodic inspections.
Lube.Oil. pressure
meter
The needle shows engine oil pressure.
Cooling water
temperature meter
The needle shows engine cooling fresh water temperature.
Boost meter
The needle shows intake air pressure (intake air boost pressure of
turbocharger.)
Heat up indicating
lamp for air heater
The lamp comes on when the air heater is heated up to start the engine
easily under low temperature condition. (Refer to 3.3.2(3))
(The lamp is located in warning lamp display column.)
DIESEL
PREHEAT
_
13
_
(2) Functions of Alarm Devices (Alarm Buzzer & Lamps)
1) The alarm buzzer sounds when any warning lamp (except the charge lamp) comes on.
2) Warning lamps come on when sensors (switchs) detect an abnormality during engine operation.
The warning lamps in the display column of the control panel are off during normal operation,
but come on as follows when an abnormality arises:
Charge Lamp
①
BATTERY
CHARGE
The lamp comes on when there is a charging failure. The alarm buzzer
does not sound. Check for breakage in the alternator V-belt
Cooling Water Temp. Warning Lamp
②
C.WATER
TEMP
The lamp comes on when the cooling water (LLC) gets too hot.
Check the water level in the sub-tank and cooling water tank, and the
discharge volume of the cooling seawater.
Lube Oil Pressure Warning Lamp
③
LUB.OIL
PRESS.
The lamp comes on when the engine lube oil pressure drops.
Check the engine oil level.
Cooling Water Level Warning Lamp.
④
C.WATER
LEVEL
The lamp comes on when the cooling water (LLC) in the cooling water tank
falls below the normal level.
Check the cooling water level in the cooling water tank.
Exhaust : Cooling seawater Discharg Warning Lamp.
⑤
EXHAUST
The lamp comes on when the cooling seawater flow becomes too small.
Check for clogging in the seawater cooling system.
Boost Pressure Warning Lamp
⑥
BOOST
The lamp comes on when the intake air boost pressure (intake air boost
pressure of turbocharger) rises abnormaly.
(3) Functions of Warning Devices
When the key switch is turned on, the alarm devices functions as follows
1) Turning the key to ON :
① Warning buzzer sounds
② The BATTERY CHARGE, LUB. OIL PRESS. and EXHAUST lamps come on.
(Note) When the warning buzzer and lamps function as above, everything is normal.
2) When the key switch is turned to START to start the engine and then returned to ON after
the engine starting up.
① The warning buzzer stops sounding.
② All warning lamps go off. After the engine starts up, make it the rule to check alarm
devices. If they do not work normally, contact your dealer.
_
14
_
Function of Alarm Devices
Before starting
OFF
→ON
After Starting
START
→ON
On
Off
Charge Lamp
On
Off
Cooling Water Temperature
Off
Off
Engine Oil Pressure
On
Off
Cooling Water Level
Off
Off
Exhaust
On
Off
Boost
Off
Off
Key Operation
Alarm Buzzer
Alarm Lamps
_
15
_
2.5.2 Remote Control Handle
Use the remote control handle in the steering room for ahead, astern and speed control.
● Operation
of Single Lever Remote Control Handle (Option)
① : The marine gear shift lever is in neutral.
② : The marine gear shift lever is in ahead
or astern
③ : Engine’
s max. speed position.
②∼③ : Acceleration position
Neutral
Ahead or Astern
Max Speed
E M
Through out knob
when free slottle
to marine gear shift lever.
Side mount type
Remote control handle
to engine governor lever.
Neutral
Ahead
Reverse
Through out knob
when free slottle
E M
to marine gear shift lever.
to engine governor lever.
Neutral
Ahead
Reverse
M
E
to marine gear shift lever.
to engine governor lever.
_
16
_
3. OPERATION
3.1 Fuel Oil, Lube Oil & Cooling Water
3.1.1 Fuel
[NOTICE]
Use of fuels not recommended in this Operation Manual may cause a decrease in
engine performance and cause components to fail.
(1) Selection of fuel
Use the following diesel fuels for best engine performance:
ISO8217 DMA, BS2869 A1 or A2
Fuels equivalent to Japanese Industrial Standard, JIS. No. K2204-2
Cetane fuel number should be 45 or greater
(2) Fuel Handling
1) Water and dust in the fuel oil can cause
operation failure.
Use containers which are clean inside to store
fuel oil. Store the containers away from rain
water and dust.
2) Before supplying fuel, let the fuel container
rest for several hours so that water and dust
in the fuel are deposited on the bottom. Pump
up only the clean fuel.
3) Use fuel with a Cetane number of over 45.
4) When supplying fuel to a new boat for the
first time, be sure to extract all fuel from the
F. O. tank and check for impurities in the fuel.
Pump up only fuel above the down half, leaving
dreg accumulated on the bottom.
(3) Fuel piping
Fuel oil strainer
_
17
To fuel oil injection pump
Install the piping between the fuel tank and the
engine's fuel injection pump, as illustrated on
the right.
Be sure to install a drain cock at the bottom of
the fuel tank to remove water and dust.
Install an oil/water separator and a fuel filter in
the middle of the fuel piping.
_
Fuel oil return pipe
Fuel oil primiing pump of fuel feed pump
Oil/water separator
Fuel oil tank
Less than 500mm
Approx. 50mm
Fuel oil cock
Drain cock
3.1.2 Lube oil
[NOTICE]
Use of Iube oils not specified in this operation manual may cause the seizure or
premature wear of internal parts and shorten the engine’
s life.
(1) Selection of Engine Lube Oil
AIR TEMPERATURB
(3) Handling the Lube Oil
F
50
122
40
104
30
86
20
68
10
50
0
5
10
15
20
25
30
35
40
55
32
23
14
5
4
13
22
31
40
67
Multi grade
SAE 10W20
Yanmar KMH6A, KMH6A1…SAE Viscosity 30
Follow the instructions for other types of Marine
Gear.
SAE10W
●
SAE 30
(2) Selection of Oil for marine gear.
C
SAE 20W40
SAE 15W40
SAE 15W30
SAE 40
Single grade
SAE SW20
Use the following lube oil:
● API CD SAE Viscosity ……… 30
● SAE Viscosity……………15W40
1) When handling and storing lube oil, be careful
not to allow dust and water to enter the Iube
oil. Clean around the filter port before refilling.
2) If lube oil of different brands are blended, the
quality of lube oil may deteriorate. To prevent
IF YOU OPERATE YOUR EOUIMENT AT TEMPERATURES BELOW
THE LIMITS SHOWN, CONSULT YOUR DEALER FOR SPECIAL
this, do not mix the lube oil.
LUBAICANTS AND STARTING AIDS.
3) Lube oil supplied to the engine will undergo
natural degeneration with time even when the
engine is not used.
Lube oil should be replaced at the specified intervals regardless of whether the engine is
being used or not.
3.1.3 Cooling Water
[NOTICE]
Be sure to add Long Life Coolant /Antifreeze (LLC) to cooling fresh water.
In cold seasons, the LLC is especially important.
Without LLC, cooling performance will decrease due to scale and rust in the
cooling water line. Without LLC, cooling water will freeze and expand, breaking
various parts.
_
18
_
(1) Handling of Cooling Water
1) Always use purified soft water or distilled water for the fresh water. Never use dirty water or
hard water.
Impurities in the fresh water cause scale and rust to build up on the cooling water passage,
reducing cooling efficiency and causing the engine to overheat.
2) Choose LLC which will not have any adverse effects on the materials (cast iron, aluminum,
copper, etc.) of the engine's fresh water cooling system.
Consult your Yanmar dealer or distributor on the use of coolant /antifreeze, and detergents.
The coolans /antifreezes, which are good performance for example, are shown below.
●
TEXACO LONG LIFE COOLANT ANTIFREEZE, both standard and pre-mixed.
Product codes 7997 and 7998.
●
HAVOLINE EXTENDED LIFE ANTIFREEZE/COOLANT.
Product code 7994.
3) Strictly use the proper mixing ratio of LLC to fresh water as instructed by the LLC maker. If
incorrect ratio of LLC to fresh water is used, the cooling performance of the cooling water
will drop and the engine may become overheated.
4) Do not mix different types (brand) of LLC, chemical reactions may make the LLC useless and
engine trouble could result.
5) Replace the cooling water periodically according to the maintenance schedule given in this
operation manual.
6) Remove the scale from the cooling water system periodically according to the instructions this
operation manual.
[NOTICE]
Excessive use of LLC also lowers the cooling efficiency of the engine.
Be sure to use the mixing ratios specified by the LLC maker for your temperature
range.
_
19
_
3.2 Before Initial Operation
Prepare for initial operation according to the following procedures :
3.2.1 Supplying Fuel and Bleeding Air in the Fuel System.
DANGER
●Gasoline will catch fire!
Check again before
supplying that you are using
the proper fuel.
●If any fuel is spilled, clean it
off completely.
(1) Supplying Fuel
1) Before supplying fuel, flush the fuel tank
and the fuel system par ts with clean
kerosene or diesel fuel.
Prining pump knob
2) Supply fuel with no dust and water to the
fuel tank
Prining pump
(2) Bleeding Air in the Fuel System
Bleed air in the fuel system according to the
following procedurs. When there is air in the
fuel system, the fuel injection pump will not
able to do the function.
1) Open the cock on the fuel oil inlet pipe line,
and loosen the air bleeding bolt on the top
of the water/fuel oil separator (optional) by
turning 2~3 times using spanner. When
fuel with no air bubbles come out, tighten
the air bleeding bolt.
Fuel oil high pressure pipe
Ball joint bolt
(The top of center)
Fuel oil filter
2) Loosen the priming pump knob turning
counter-clockwise and repeatedly push the
knob by hand to feed fuel oil to the fuel
filter.
3) Loosen the ball joint bolt on the top of
center of the fuel filter. And relese fuel
from there until fuel with no air bubbles
come out, then tighten the ball joint bolt.
Fuel injection pump
4) Push down the priming pump knob and
turn it clockwise to fasten.
_
20
_
3.2.2 Supplying Engine Lube Oil
1) Remove the filler cap and supply the engine
lube oil.
2) Supply lube oil up to the upper limit on the oil
dipstick. To check the oil level, insert the
dipstick in fully.
Engine Lube Oil Capacity:All 20.0
(oil pan full 16.4 )
3) Fasten the filler cap fully.
[NOTICE]
Never supply too much lube oil.
If overfilled, oil may come out from the
breather and cause engine trouble.
_
21
_
3.2.3 Supplying lube oil to marine gear
(for Yanmar model KMH6A, KMH6A1)
1) Remove the filler cap and supply the lube oil
to the marine gear.
2) Supply lube oil up to the upper limit on the oil
dipstick. To check the oil level, insert the
dipstick in fully.
Lube Oil Capacity : Full 4.0
3) Fasten the filter cap fully.
3.2.4 Supplying Cooling Water
Supply cooling water according to the following
procedures. Be sure to add LLC to the fresh water.
1) Close the water drain cocks (Close both the
fresh water line drain cocks and the sea
water line drain cocks.)
[Fig. 4]
Number of drain Cock
Fresh water line
2
Sea water line
4
(Note) The water drain cocks are opened
before shipping from the plant.
2) Remove the filler cap of the fresh water tank.
(Turn the filler cap by 1/3 turn
counterclockwise to remove.)
[Fig. 5]
3) Supply cooling water slowly to the fresh
water tank so that no air bubbles will develop.
Supply until the water overflows from the filler
port.
[Fig. 6]
[Fig. 7]
4) After supplying cooling water, fasten the
filler cap firmly. If loose, trouble will occur due
to water leakage.
To fasten, align the notch at the rear of the
cap with the slot of the filler port and turn the
cap by 1/3 turn.
(KMH6A
KMH6A1)
5) Remove the cap of the sub-tank, supply water
to the full limit and fasten the cap.
_
22
[Fig. 8]
_
[Fig. 9]
6) Check the rubber hose connecting the subtank with the fresh water tank. If the hose is
not water-tight, a lot of coolling water will be
consumed.
[Fig.10]
DANGER
If the filler cap is loose,
hot steam and water will
spout out and you may
be burned.
3.2.5 Starting after storage or new engine
If the engine has not been operated for a long time, the lube oil in the clearance between moving
parts will be lost. If operated in that condition, the engine could be damaged.
If starting the engine for the first time or after long storage, the engine should be turned over
without firing to distribute lube oil according to the following procedure.
1) Open the kingston cock (kingston cock: optional)
2) Open the fuel tank valve
3) Shift the marine gear remote control handle to neutral
4) Turn the battery switch on (battery switch: local supply)
5) Hold the stop button on;
Do not release the stop button while cranking. If released the engine will start.
6) Insert the key into the starter switch and turn the key to the ON position. The alarm buzzer
should sound and the alarm lamps come on . This is normal.
(See 2.5.1(3).)
(Note) The C.WATER TEMP, C.WATER LEVEL and BOOST lamps will not come on.
7) Turn the key to the start position and hold for 5 seconds. The engine will not start. (cranking)
This will distribute oil to the lubricated parts.
8) Release the stop button. Turn the key to start the engine. Release the key when the engine
has started. The alarm buzzer should stop and the alarm lamps go out. Raise the engine
speed gradually and check for abnormal sounds. Also check that sufficient cooling
seawater is being discharged from the exhaust and that the color of the exhaust is normal.
When you raise the engine speed, more cooling water should be discharged from the
exhaust outlet.
_
23
_
3.2.6 Checking and Resupplying Lube Oil and Cooling Water
When engine lube oil, marine gear lube oil or fresh water is supplied for the first time or they have
to be replaced, conduct trial operation of the engine for about 5 minutes and check the quantity of
lube oil and fresh water. The trial engine operation will send the Iube oil and cooling water to the
parts, so the lube oil and fresh water levels will fall. check and resupply lube oil and fresh water as
necessary.
1) Resupplying engine lube oil (See 3. 2. 2.)
2) Resupplying lube oil to marine gear (for Yanmar model : KMH6A, KMH6A1) (See 3. 2. 3.)
3) Resupplying fresh water (See 3. 2. 4.)
_
24
_
3.3 How to Operate
WARNING
●To prevent exhaust gas poisoning, ensure good ventilation during
operation. Install ventilation windows, ports or ventilators in the
engine room.
●Never touch or allow your clothes to touch the moving parts of the
engine during operation. If the front pulleys, V-belt, propeller shaft,
etc. catch your body or clothes, serious injury may result.
Check that no tools, cloth, etc. are left on or around the engine.
CAUTION
●The engine is very hot during operation and immediately after stopping, especially the turbocharger, fresh water tank, exhaust pipe
and high pressure fuel pipe. Avoid burns!
Never touch or allow your clothes to touch these parts.
3.3.1 Inspection before Starting
Before starting the engine, make it a daily check to conduct the following inspections:
(1) Visual Checks
Check for the following:
1) Lube Oil leakage from the engine
2) Fuel oil leakage from the fuel system
3) Water leakage from the cooling water system
4) Damage to parts
5) Loosening or loss of bolts
If any failure is found, never operate the engine before completing repairs.
(2) Checking and Resupplying Fuel
Check the fuel level inside the fuel tank and resupply with the recommended
fuel if necessary. (See 3. 2. 1)
(3) Checking and Resupplying Engine Lube Oil
1) Check the engine lube oil level with the oil dipstick.
2) If lube oil level is low, resupply with the recommended lube oil to the filler port on the bonnet.
Resuppiy lube oil up to the upper level mark on the lube oil dipstick.
(See 3. 2. 2)
(4) Checking and Resupplying marine gear Lube Oil (for Yanmar model : KMH6A, KMH6A1)
1) Check the marine gear oil level with the oil dipstick.
2) If the lube oil level is low, resupply with the recommended lube oil using the filler port.
Resupply up to the top mark on the oil dip stick.
(See 3. 2. 3)
Refer to the attached operation manual for the marine gears other than model KMH6A, KMH6A1.
_
25
_
(5) Checking and Resupplying Cooling Fresh Water
Check the fresh water level before operation
while the engine is cold.
Checking the water level while the engine is hot
is dangerous, and the cooling water reading will
be misleading due to thermal expansion.
Only check and resupply fresh water routinely at
the subtank. Do not remove the filler cap of the
fresh water tank during operation.
1) Check that cooling fresh water level is in
betweer Full and Low mark on the side of
the sub-tank.
2) If the water level is below to the Low level
mark, open the sub-tank cap and supply
fresh water.
3) When the water in the sub-tank runs out,
open the filler cap of the fresh water tank and
supply water until it overflows from the filler
port.
(See 3. 2. 4)
DANGER
Do not open the filler cap
during operation or immediately after stopping the
engine.
Hot steam and water will spout out. To
remove the cap, wait until the engine
has cooled down, wrap the cap with a
cloth and loosen the cap slowly. After
checking, fasten the filler cap firmly.
[NOTICE]
If the cooling fresh water runs out too often,
or only the cooling fresh water in the fresh
water tank falls without any change in the
water level of the sub-tank, there may be
some leakage of water or air.
In such cases, consult your Yanmar dealer
or distributor without delay.
Checking
cooling
fresh water
level
(Note) The water level rises in the sub-tank during engine operation. This is not an abnormality.
After stopping the engine, the cooling water cools down and the extra water in the sub-tank
returns to the fresh water tank.
(6) Checking the Remote Control Handle
Be sure to check that the remote control handle lever moves smoothly before use it. If it is
hard to operate, Iubricate the joints of the remote control cable and also the lever bearings.
(See 4. 3. 4 (3),(4).)
[NOTICE]
If the shift stroke of the remote control cable is inadequate at the marine gear end,
it may be impossible to shift into either ahead or astern or clutch (marine gear)
slippage may occur.
_
26
_
(7) Checking the Alarm Devices
When operating the starter switch, check that the alarm devices work normally.
(See 2. 5. 1 (3).)
(8) Preparing Fuel, Lube Oil and Cooling Fresh Water in Reserve
Prepare sufficient fuel for the day's operation. Always store lube oil and cooling fresh water in
reserve (for at least one refill) onboard, to be ready for emergencies.
3.3.2 How to Start the Engine
[Singlele lever remote contool handle]
(1) Start the engine according to the
following procedures:
1) Open the Kingston cock (optional).
2) Open the fuel tank cock (local supply).
3) Pull the→knob of remote control handle
and tilt the lever slightly to“Ahead”.
4) Turn the battery switch on.
5) Insert the key into the starter switch and
turn the key to ON: when the alarm buzzer
sounds and the alarm lamps come on the
alarm devices are normal.
(See 2. 5. 1 (3).)
6) Turn the key to START to start the engine.
Release the key when the engine has started.
The key returns automatically to ON. The
alarm buzzer should stop and the alarm
lamps go out.
Neutral "Half
speed"
Astern
Ahead
Remote control
head
GLOW
27
Before starting
during operation
Release your hold
OFF
when engine
ON
engine is started
STSRT
[NOTICE]
(2) Re-starting after Starting Failure
Before turning the starter switch key again, be
sure to confirm that the engine has stopped
completely. If the engine is re-started while the
engine still has not stopped, the pinion gear of
the starter motor will be damaged.
_
Remote control
hangle
Do not hold the starter switch on for
more than 15 seconds at a time. If the
engine does not start first time, wait for
about 15 seconds before trying again.
After the engine has started, do not
turn the key OFF position. (It should
return to ON.)
Alarm device will not work when the
key is OFF.
_
(3) Start up of the engine in cold weather
When starting the engine under low temperature conditions (approx.0℃ or lower), use the air
heater (optional) to enable easier starting.
●
●
Turn the starter key from the OFF position to
GLOW. Continue to hold the key in the GLOW
position to heat up the air heater for about 15
seconds.
Starter key switch
GLOW
OFF
ON
START
Then, return the starter key to START to start
the engine.
Note: When you choose the air heater (optional),
we recommend you to choose the control
panel (optional) having the air heater heated up indicating lamp. (New B, C, D panel).
When the air heater is heated up, the lamp
comes on to turn the key to START position.
[NOTICE]
Do not leave the air heater on for longer
than 20 seconds at a time. Leaving the
air heater on for longer perfods of time
will result in damage.
(4) After the Engine has Started
After the engine has started, check the following
items at a low engine speed:
1) Check that the gauges and alarm devices on
the control panel are normal.
2) Check that no water or oil leak from the engine.
[NOTICE]
The engine will be seized, if it is operated
when cooling seawater discharge is still
too small or load is applied without any
warming up operation.
3) Check that exhaust color, engine vibrations and
sound are normal.
4) When there are no problems, operate the engine at low speed with the boat still stopped
(warming up operation for about 5 minutes) to send lube oil to all parts of the engine.
5) Check that sufficient sea water is discharged from the seawater outlet pipe.
Operation with too little seawater discharge will damage the impeller of the seawater pump.
If seawater discharge is too small, stop the engine immediately, identify the cause and repair:
● ls the Kingston cock open ?
● ls the inlet of the Kingston cock on the hull bottom clogged ?
● ls the seawater suction hose broken, or does the hose suck in air due to a loose joint ?
_
28
_
3.3.3 Shifting
[NOTICE]
3.3.3.1 Single-lever type remote control
handle (optional)
Do not accelerate or decelerate sharply,
overload, etc. for the first 50 hours when
using a new engine.
Return the control lever to neutral before performing the following operation.
(1) Ahead (Forward)
Gradually tilt the control handle to "Ahead". Tilting the handle gradually to accelerating side,
the clutch is thrown in and the boat sails ahead.
(2) Astern (Reverse)
Gradually tilt the control handle to "Astern". Tilting the handle gradually to accelerating side,
the clutch is thrown in and the boat sails astern.
(3) Neutral
Be sure to set the clutch marine gear handle at "Neutral".
[NOTICE]
Engine trouble can arise, if the engine is operated for a long time under overloaded
conditions with the remote control handle in the full throttle position (max. engine
speed position), exceeding the maximum engine speed.
Use the engine speed of about 100rpm below than at the full throttle position.
3.3.4 Checking during Operation
Always be on the look out for problems during engine operation.
Pay particular attention to the following.
(1) Is sufficient seawater being discharged from the seawater outlet pipe ?
If the discharge is small, stop the engine immediately, identify the cause and repair.
(2) Is the exhaust color normal ?
The continuous black exhaust smoke shows engine overloading.
This shortens the engine's life, so should be avoided.
(3) Are there abnormal vibrations or noise ?
Do not operate at speeds which produce violent vibrations. Depending on the hull structure,
engine and hull resonance may suddenly become great at a certain engine speed range
causing heavy vibrations. Avoid operation in this speed range. If you hear any abnormal
sounds, stop the engine and inspect.
(4) Alarm buzzer sounds during operation.
If the alarm buzzer sounds during operation, Iower the engine speed immediately, check the
alarm lamps, and stop the engine for repairs.
(5) Is there water, oil, or gas leakage, or are there any loose bolts ?
Check the engine room periodically for any problems.
(6) Is there sufficient oil in the fuel tank ?
Replenish fuel oil in advance to avoid running out of fuel during operation.
(7) When operating the engine at low speed for long periods of time, race the engine once
every 2 hours.
_
29
_
How to Race the Engine
Repeat a cycle of high speed and low speed operation about 5 times at no load with
the clutch (marine gear) in Neutral position.
Engine racing removes carbon deposits from the cylinder and the tip of the fuel
injection valve.
If racing is neglected, the exhaust color may worsen and performance may drop.
3.3.5 Stopping the Engine
Stop the engine according to the following procedures:
1) Shift the remote control leve to low engine speed and handle to Neutral position to stop the
boat.
2) Be sure to race the engine before stopping.
(See 3.3.4-(7).)
3) Operate the engine at low speed (approx. 1000rpm) for about 5 minutes to decrease the
engine temperature.
[NOTICE]
If engine is stopped quickly during high speed operation, the engine temperature
will rise sharply, causing lube oil to degenerate and moving parts to stick.
4) Press the stop button until the engine stops completely.
engine may continue running.
5) Turn the starter switch to OFF. Pull out the key
and store it carefully
6) Turn the battery switch off.
7) Close the fuel tank cock.
8) Close the kingston cock.
[NOTICE]
Be sure to close the kingston
cock, or water may enter and
sink the boat.
_
30
_
If you release the button early, the
3.4 Long Term Storage
(1) In cold temperatures or before long term
(3 months or more) storage, be sure to drain
the water from the seawater cooling system.
[NOTICE]
If water is left inside, it may freeze and
damage parts of the cooling system
( fresh water cooler, lube oil cooler, seawater pump, etc.)
1) Loosen the 6 bolts fixing the side cover of the
seawater pump, remove the cover and drain
the water from inside.
2) After draining, put the pump's side cover
back on.
3) Open the seawater drain cocks (3 positions as
illustrated at right for engine side) and drain
the seawater.
[Fig.17]shows the position of the seawater
drain cock for Yanmar model KMH6A, KMH6A1.
For detailed information on models other than
Yanmar models, refer to the Marine Gear
Operation Manual.
4) Close the drain cocks after draining the seawater
Alternator
Fresh water tank
Fresh water
cooler
V-belt
Nuts(6pcs)
[Fig.13]
(2) Be sure to drain from the fresh water cooling system if LLC is not used.
1) Open the fresh water drain cocks (2 postions)
and drain the fresh water.
2) Close the drain cocks after draining the fresh
water.
Sea water pump
[NOTICE]
If the water is not drained, it may freeze
and damage parts of the cooling water
system (fresh water tank, fresh water
cooler, cylinder block, cylinder head, etc.)
[Fig.14]
[Fig.15]
[Fig.16]
[Fig.17]
(3) Carry out the next periodic inspection before
placing the engine in storage.
Remove dust and wipe off oily contamination
from the outside of the engine.
Clean the engine.
(4) To prevent condensation inside the fuel tank,
either extract all fuel or fill the tank.
_
31
_
(5) Oil and grease the exposed area and joints of the remote control cable and the bearings of
the remote control handle.
(6) Cover the turbocharger, exhaust pipe, etc. with vinyl sheets and seal them to prevent moisture
from entering.
(7) Drain bilge in the hull bottom completely.
(If water leakage is found in the hull and water can enter, the boat must be hauled for
repair.)
(8) Water-proof the engine room to prevent rain and seawater from entering.
(9) During long-term storage, charge the battery once a month to compensate for the battery's
self-discharge.
(10) When using the engine after long storage, follow the procedures for starting a new engine.
_
32
_
4. Maintenance & Inspection
4.1 General Inspection Rules
Conduct Periodic Inspection for Your Safety:
The functions of engine components will degenerate and engine performance will fall if
periodic inspections are not performed. If the countermeasures of the problems are not
taken, you may encounter unexpected troubles while cruising at sea. If the periodic
inspections are not performed, consumption of fuel or lube oil may become excessive and
exhaust gas and engine noise may increase.
These all shorten the life of the engine. Daily and periodic inspection and servicing increase
your safety operation.
Inspect before Starting:
Make it a daily rule to inspect before starting.
Periodic Inspections at Fixed Intervals:
Periodic inspections must be made after 50, 250 (or 1 yr.), 500 (or 2 yrs.), 1000 (or 4 yrs.) and
2000 hours of use. Monitor the hourmeter and conduct periodic inspections according to the
procedures described in this operation Manual.
Use Genuine Parts:
Be sure to use genuine parts for consumable and replacement parts.
Use of other parts will reduce engine performance and shorten the life of the engine.
Servicing Tools:
Prepare servicing tools onboard to be ready for inspecting and servicing the engine and other
equipment.
Tightening Torque of Nuts & Bolts:
Over-tightening of bolts and nuts causes them to come off or their threads to be damaged.
Insufficient tightening causes oil leakage from the installation face or troubles due to the
loosening of bolts. Nuts and Bolts must be tightened to the appropriate tightening torque.
Important parts must be tightened with a torque wrench to the correct tightening torque and in
the right order. Consult with your dealer or distributor if the servicing requires the removal of
such parts.
The tightening torque for standard nuts & bolts is listed below:
[NOTICE]
● Apply the following tightening torque to bolts having " 7 " on the head.
7
(JIS strength classification : 7T)
○ Tighten bolts with no " 7 " mark to 60% tightening torque.
○ If the parts to be tightened are made from aluminum alloy, tighten the bolts to 80%
tightening torque.
Bolt dia.×pitch
mm
N.m
Tightening torque (Kgf-m)
M6×1.0
M8×1.25
10.8±1.0
(1.1±0.1)
25.5±2.9
49.0±4.9
(2.6±0.3)
(5.0±0.5)
_
33
M10×1.5 M12×1.75 M14×1.5
_
M16×1.5
88.3±9.8
137±9.8
226±9.8
(9.0±1.0) (14.0±1.0) (23.0±1.0)
4.2 Periodic Inspection
Daily and periodic inspection are important to keep the engine in its best condition.
The following is a summary of inspection and servicing items by inspection interval.
Periodic inspection intervals should vary depending on the uses, loads, fuels and lube oils used
and handling conditions, and are hard to establish definitively. The following should be treated
only as a general standard.
[NOTICE]
Schedule your own periodic inspection plan according to the operational conditions of
your engine and inspect every item. Neglect of periodic inspection may lead to engine
troubles and shorten the life of the engine. Inspection and servicing at 2000 hours of
operation and thereafter require special knowledge and techniques.
Consult your dealer or distributor or the Yanmar subsidiary in your region.
●:Consult nearest dealer
○:Check
◎:Replace
Preiodical lnspection and Maintenance.
Schedule
Item Description
Daily
Fuel
Check of fuel level
Every 50
service
hrs.
Engine lube oil
Every 1000
service hrs.
(or 4 yrs.)
Every 2000
service
hrs.
Page
20
Draining of tank
○
37
Drain of filter and water
separator
○
37
39
Check oil level in oil pan,
add if necessary
◎
41
○
21
◎
Replacement of filter element
(1st time)
◎
36
●
Cleaning of lube oil cooler
Change of lube oil
◎
Engine side
Check of cooling water discharge
Cooling water
(seawater side)
Every 500
service hrs.
(or 2 yrs.)
○
Replacement of filter element
(1st time)
◎
44
36
○
29
Check and replacement of
impeller
○
●
43
Cleaning of seawater system
(including fresh water and lube oil cooler)
○
●
44
◎
Replacement of anti-corrosive zinc
Cooling water
(fresh water side)
Every 250
service hrs.
(or 1 yr.)
Check and supply of fresh water
level
42
○
26
◎
Replacement of fresh water
Cleaning of fresh water system
(including heat exchanger tank)
43
●
_
34
_
44
Schedule
Item Description
Every 2000
service
hrs.
Page
Adiustment of injection timing
●
45
Overhaul and check of fuel feed
pump
●
45
Fuel injection pump
Cylinder head and fuel injection
valve
Daily
Electrical parts
Turbo
charger
Marine gear(Yanmar marine gear)
Every 250
service hrs.
(or 1 yr.)
Every 500
service hrs.
(or 2 yrs.)
●
Adiustment of injection pressure
and atomizing condition
(1st time)
Adjustment of clearance intake
and exhaust valve
(1st time)
●
Every 1000
service hrs.
(or 4 yrs.)
●
44
●
44
●
Lapping the intake/exhaust valve
Check and adjustment of remote control cable
General
Every 50
service
hrs.
Check of alarm devices
○
39
40
○
○
14
○
Check of battery electolyte volume
38
Adjustment of alternator(generator)
drive belt tension
○
43
○
Cleaning of blower
40
Check and cleaning of lube oil
cooler
●
Check and cleaning of lube oil inlet
filter net
○
○
(1st time)
(2nd time)
○
Check of bearings, friction plate,
and seal
Check of lube oil level
○
Chack for leakage of C.W., L.O., F,O.
and exh. gas (inc lusing mixing
elbow)
44
37
●
Replacement of lube oil
45
44
27
◎
◎
(1st time)
(2nd time)
○
◎
27
28
_
35
_
4.3 Periodic Inspection Items
4.3.1
Inspection after Initial 50 Hrs. Operation
(1)Replacing the Engine Lube Oil and Lube Oil Filter (1st time)
During initial operation of the engine, the oil is
quickly contaminated due to the initial wear of
internal parts. The lube oil must therefore be
replaced early.
Replace the Iube oil filter, too, at this time.
Engine lube oil is convenient to drain before the
engine has cooled down.
①Remove the lube oil dipstick and connect
the hose of the drain oil pump (optional part)
to the guide of the oil dipstick.
②Prepare a container to receive drain oil and
pump out oil using the drain oil pump.
③Remove the lube oil filter with the filter
wrench.
(Turn counterclockwise. )
④Clean the filter installation face.
⑤Screw the lube oil filter fully into the installation face by hand and further fasten the filter
by about 3/4 turns with the filter wrench.
(Turn clockwise.)
⑥Supply new lube oil to the specified level.
(See 3. 2. 2.)
Test operation the engine for 5 minutes.
Check that no oil leaks out during operation.
⑦Wait about 10 minutes after stopping the
engine. Check the oil level with the oil
dipstick and refill to the specified level.
CAUTION
Beware of oil splashes if
extracting the lube oil
while it is hot.
Fresh water tank
Fresh water
cooler
Starter motor
Drain oil pump
Lube oil filter Yanmar P/N
Full flow
119593-35100
By-pass
119593-35400
[Fig.18]
Lube oil filter
(By-pass)
(Full flow)
Inter cooler
[Fig.19]
_
36
_
(2)Replacing Marine gear Lube Oil and
Cleaning the Filter (Ist time)
During initial operation of the engine, the lube oil
is contaminated quickly due to initial wear. The
lube oil must be replaced early. Clean the clutch
Iube oil filter, too, at this time.
①Remove the filler port cover, insert the drain
[Fig.20]
oil pump hose to the bottom of the marine
gear and pump out the lube oil from inside the
Lube oil cooler
marine gear.
②Remove the filter in the side cover, extract the
filter and clean the filter with kerosene.
③When installing the filter, attach the side cover
Lube oil filter (inside)
by pressing it by coil spring.
(KMH6A, KMH6A1)
gear (YAnmar
Do not forget to place the O-ring inside the
( Marine
)
model: KMH6A)
side cover.
Drain oil pump (Optional)
④Supply new lube oil to the specified level.
(See 3. 2. 3.)
⑤Trially operate the engine and check that no oil leaks.
4.3.2
Inspection Every 50 Hours
(1)Draining of the Fuel Tank (Hull) (local supply)
Open the drain cock of the fuel tank to extract drain (water, dust, etc.) from the tank’
s bottom.
Receive the drain in a container. Drain until fuel with no water and dust flows out. Then close
the drain cock.
(2)Draining of the Oil / Water Separator
(optional)
①Close the fuel cock.
②Remove the drain plug at the bottom of the
oil/water separator and drain water and dust
from inside.
③After draining of the oil / water separator, be
sure to vent air from the fuel system.
(See 3. 3. 2 (3))
_
37
Drain plug
_
(3) Inspection of Battery
WARNING
Fire due to Electric Short-Circuits
Always turn off the battery switch or detach the earth cable (--) before
inspecting the electrical system. Failure to do so could cause shortcircuiting and fires.
Proper Ventilation of the Battery Area
Be sure the area around the battery is well-ventilated and there is
nothing which could start a fire. During operation and charging,
hydrogen gas is emitted from the battery and can be easily ignited.
Battery Fluid
Battery fluid is diluted sulfuric acid. It can blind you if it gets in your
eyes, or burn your skin. Keep the fluid away from your body. Wash it off
immediately with a large quantity of fresh water if you get any on you.
● Check
the level of fluid in the battery.
When the amount of fluid nears the lower
limit, fill with battery fluid (available in the
market) to the upper limit. If operation
continues with insufficient battery fluid, the
battery life is shortened, and the battery
may overheat and explode.
● Batter y fluid tends to evaporate more
quickly in the summer, and the fluid level
should be checked earlier than the
specified times.
● If the engine turns over at a slower than
usual rate and refuses to start, recharge
the battery.
● If the engine still will not start after charg
ing,replace the battery.
Local supply
Follow the instructions and precautions in the
manual from the battery maker.
[NOTICE]
The capacity of the specified alternator and battery is sufficient for regular operation,
however, the capacity may be insufficient, if they are used for other purposes such
as lights inside the boat, etc. Consult your Yanmar dealer or distributor.
_
38
_
(4) Draining the fuel oil filter
Fuel oil filter
1) Remove the drain plug at the bottom of fuel
oil filter and discharge water and dust
collected in the fuel oil filter.
2) After draining bleed air from the fuel
system.
(For further details, see Sec. 3. 2. 1 (2))
Drain plug
Center bolt
4.3.3
Inspection after First 250 Hrs.
(1) Inspection and Adjustment of Intake/Exhaust Valve Head Clearance (1st Time)
Inspection and adjustment must be made to correct opening/closing timing lags of the intake/
exhaust valves which might arise due to initial parts wear. This inspection requires specialized
knowledge and techniques. Consult your Yanmar dear or distributor.
(2) Inspection and Adjustment of Fuel Injection Valve (1st Time)
lnspection and adjustment are necessary to obtain optimal fuel injection to ensure the good
engine performance. This inspection requires specialized knowledge and techniques. Consult
your Yanmar dealer, or distributor.
4.3.4 Inspection Every 250 Hrs.(or 1 yr.)
(1) Replacement of Marine gear Lube Oil and cleaning the Filter (2nd time)
Replace marine gear lube oil and clean filter for
the second time.
(2) Replacing the Engine Lube oil and Filter
Replace the engine lube oil every 250 hours.
Replace the lube oil filter, too. (See 4.3.1(1).)
(3) Adjusting the (Governor Lever) Engine
Speed Control Cable
Check the (governor lever) speed control lever
at the engine side makes uniform contact with
the high speed and low speed side stopper
when the remote control handle is in the high
speed (high idle) or low speed (idle) position.
If either the high speed or the low speed side
does not make contact with stopper.
adjust as follows (next page):
Setting bolt
High idle
Limit bolt
Low idle
limit bolt
Bracket
Governor lever
[Fig.22]
_
39
_
Fuel oil
injection
pump
①Remove the threaded area and the connecting pivot of the remote control cable from the
governor lever. Adjust the cable stroke by adjusting the fastening distance of the threaded
area.
②Loosen the setting bolt of the remote control cable clamp bracket and adjust the fixing position
of the remote control cable.
(However, the adjustment of the remote control cable stroke must be made as in ① above.)
(4) Adjusting the Marine Gear Remote Control Cable
①Check to see that the clutch lever on the
marine gear side is in the neutral position
when the remote control handle is in
NEUTRAL.
②If the position of the clutch lever is incorrect,
Ioosen the setting screw of the cable bracket
and adjust the position of the cable.
③Check the clutch lever in
▲FWD (Forward) (Ahead )
▼REV (Reverse) (Astern)
making sure it is correctly aligned.
④Make any necessary adjustments using
NEUTRAL as the central point.
⑤Make sure the control cable is securely fastened to the clutch lever.
For other models, refer to the marine gear
operation manual.
[Fig.23]
Setting screw
Cable bracket
Ahead
Clutch lever
NEutral
Astern
Adjusting the marine gear remote
control cable (KMH6A, KMH6A1)
(5) Cleaning the Turbocharger Blower
Contamination of the turbocharger blower causes blower speed to drop and engine output to
down.
①Prepare blower cleaning agent, fresh water
and a small pitcher.
②Remove the pre-cleaner (filter) of the turbocharger air inlet.
③Pour about 50cc of blower cleaning agent little
by little at about 10 second intervals through
the air inlet under no load operation (2500~3000 rpm)
④Wait about 3 minutes, and pour 50cc fresh
water into the air inlet in the same manner at
about 10 second intervals.
_
40
Fresh water tank
Turbo charger
Lube oil
filter
[Fig.24]
_
⑤Run the engine at load for about 10 minutes to dry the turbocharger and check that engine
output has recovered.
If the output has not recovered, repeat the above cleaning cycle 3 or 4 times.
If the output still has not recovered, consult your Yanmar dealer or distributor.
⑥Clean the pre-cleaner with detergent, dry it
and install it to the blower air inlet.
Replace the pre-cleaner(filter), if broken.
[NOTICE]
Do not pour a large quantity of
blower cleaning agent or fresh
water in at once. The blower may
be broken or water-hammer may
occur.
Blower wash agent (4 )
Yammar P/N
974500-00400
(6)Replacing the Fuel Filter Element
Fuel oil filter
Replace the fuel filter element periodically
before there is clogging and the fuel flow is
reduced.
①Close the fuel cock of the fuel tank.
②Remove the drain plug and discharge the
fuel oil in the fuel filter. (put a pan under the
drain to catch the fuel)
③Loosen center bolt of the filter, remove the
lower case, and replace the element.
④Bleed air the fuel system. (See 3.2.1(2))
Center bolt
Drain plug
Fuel filter element
Yammar P/N
Element
41650-550810
(7)Inspecting and Replacing
Anticorrosive Zinc
The timing for replacing anticorrosive zinc varies
depending on the characteristics of the seawater and operational conditions.
Inspect the zinc periodically and remove the
corroded area on the surface.
Replace the anticorrosive zinc when it has
decreased to less than 1/2 of the original
volume. If replacement of zinc is neglected and
operation is continued with a small volume of
anticorrosive zinc, corrosion of the seawater
cooling system will occur and water leakage or
parts breakage will result.
_
41
Rubber packing
Center bolt
Anticorrosive
zinc
Sticker
ZINC
Plug
The label shown in the figure is stuck on
the plugs which have the anticorrosive
zinc.
_
Be sure to close the kingston cock before
removing the plug to replace the anticorrosive
zinc.
< Note >
[Fig 29] shows the position of the Yanmar
marine gear (Model KMH6A).
For detailed information on marine gears other
than Yanmar ones, refer to the Marine Gear
Operation Manual.
Attached zinc
location
Yanmar P/N
Qnt'y
Inter-cooler
119574-18790
1
Marine gear
lube oil cooler
Engine
lube oil cooler
27210-200370
(KMH6A only)
1
119574-44150
2
119574-44150
2
Fresh water cooler
Lube oil filter
Anti
corrosive
zinc
Inter
cooler
[Fig.25]
Marine gear KMH6A : has no zinc.
Inter cooler
Lube oil cooler
Anticorrosive zinc
Dip stick
Dip stick
Lube oil cooler
(By-pass)
[Fig.26]
[Fig.27]
Lube oil cooler
for marine gear
Alternator
Anticorrosive zinc
Anticorrosive zinc
Fresh water tank
Fresh water
cooler
in
Anticorrosive zinc
Yanmar
Marine gear
(KMH6A)
[Fig.28]
Sea water pump
[Fig.29]
_
42
_
co
ter-
ole
r
(8) Replacing Cooling Fresh Water
Cooling performance drops when cooling water is contaminated with rust and scale. Even if LLC
is added, the cooling water must be periodically replaced because the properties of the agent
will degenerate.
To extract the cooling water, open the cooling water cocks (two positions) as shown in 3.4(2).
To resupply cooling water, refer to 3. 2. 4.
4.3.5 Inspection Every 500 Hrs.(or 2 yrs.)
(1)Inspection of AIternator V-Belt Tension
When the V-belt tension falls, the alternator will
fail to generate power due to V-belt slippage, the
cooling water pump will fail to supply cooling
water and overheating of the engine will
occur.
When the V-belt tension is too tight, the V-belt is
liable to earlier damage and the bearings of the
alternator and cooling water pump may be
damaged.
Adjusting
bolt
Alternator
Fuel oil
filter
① Check the tension of the V-belt by pressing
the middle of the belt with your finger. With
proper flexion, the V-belt should sink 8∼
10mm.
② Loosen the set bolt and move the alternator
to adjust V-belt tension.
③ Be careful not to deposit oil on the V-belt.
If stained with oil, it is liable to slip and to
stretch. If damaged replace a V-belt.
V-belt
[Fig.30]
Crank pully
V-belt
Yammar P/N
119593-42280
4.3.6 Inspection Every 1000 Hrs.(or 4 yrs.)
(1) Inspecting Inner Parts of the Seawater Pump
The discharge performance of the seawater
pump falls depending on the use.
The seawater pump must be inspected
periodically. If the discharge volume of cooling
seawater has decreased: (When disassembly
servicing of the seawater pump is necessary,
consult yanmar dealer or distributor.)
Lube oil cooler
①Loosen the side cover set bolts and remove
the side cover. (6 mounting bolts)
②IIuminate the inside of the the seawater
pump with a flashlight and inspect.
③When the following damage is found, disasassembly and maintenance are necessary:
Impelier
[Fig.31]
_
43
_
Ser water pump
1) Cracks and loss of impeller ; flaws or excessive wear of impeller tips and side faces.
(Note) The impeller must be replaced periodically (every 2000 hours).
2) Damage to wear plate
④If there is no problem with the inner parts, fit the O-ring to the groove of the joint face and
re-install the side cover.
If water leaks continuously from the water drain pipe beneath the seawater pump during
operation, disassembly and maintenance (replacement of the oil seal) is necessary.
[NOTICE]
The seawater pump revolves clockwise, but the impeller
blades must be reinstalled in the counterclockwise direction. During reassembly, be sure to install the impeller
blades correctly as shown in the illustration at right.
When turning the engine manually, never turn it in the
reverse direction.
The impeller will be twisted and damaged.
Direction of rotation
Impeller
(2) Inspection and Adjustment of Intake/Exhaust Valve Clearance
Inspection and adjustment must be made to correct the opening/closing timing lags of the
intake/exhaust valves. This inspection requires specialized knowledge and techniques. Consult
your Yanmar dealer or distributor
(3) Inspecting and Adjusting the Fuel Injection Valve
Adjustment is necessary to obtain the optimal fuel injection to ensure the good engine
performance. This inspection requires specialized knowledge and techniques.
Consult your Yanmar dealer or distributor.
(4) Replace the marine gesr oil and clean filter.
4.3.7 Inspection Every 2000 Hrs.
(1) Cleaning the Cooling Water System and Inspecting & Adjusting Parts
Rust and scale are deposited inside the seawater and fresh water cooling systems during long
use.
This lowers cooling performance, so it is necessary to clean and maintain the following parts in
addition to replacing the cooling water.
The internal contamination of the engine lube oil coolers reduces cooling efficiency and
accelerates lube oil coolers degeneration.
Servicing jobs above require specialized knowledge.
Consult your Yanmar dealer or distributor.
Relevant Cooling Water System Parts:
Seawater pump, engine lube oil cooler,
intercooler, fresh water pump, fresh water cooler, thermostat, etc.
_
44
_
(2) Lapping of Intake/Exhaust Valves
Adjustment necessary to maintain proper contact of valves and seats.
This maintenance requires specialized knowledge.
Consult your Yanmar dealer or distributor.
(3) Inspection and Adjustment of Fuel Injection Timing
Fuel injection timing must be adjusted to ensure optimal engine performance.
This maintenance requires specialized knowledge.
Consult your Yanmar dealer or distributor.
_
45
_
5. Troubleshooting
Trouble
●Alarm buzzer
sounds and alarm
lamps go on
during operation
Probable Cause
Measure
[NOTICE]
Shift to low speed operation immediately, check which lamp has
come on and stop the engine for inspection.
If no abnormality is identified and there is no problem with operation, return to port at your lowest speed and request repairs.
○Eng. L.O. Press.
Warning Lamp
goes on.
Engine L.O. insufficient;
L.O. filter clogged.
L.O. level check,
resupply, replace
Replace L.O. filter
Replace Eng. L.O.
○Marine gear lube oil
pressure warning light
goes on. (if having)
Insufficient marine gear
lube oil
Check the oil level
and supply.
○C.W. Temp.(Fresh
Water) Warning
Lamp goes on.
Fresh water cooler
water level low.
Cooling seawater
discharge insufficient
Contamination inside
the cooling system.
Check C.W. level
resupply
System clogged; air
has entered the system
Ask for repairs.
○Fuel Oil Warning
Lamp goes on. (if having)
F.O. tank fuel level low.
Refill.
●Warning Devices
are Faulty.
When Switch is
Turned ON:
○Alarm buzzer
does not sound
○Warning lamps
do not go on
-Eng. L.O. Press, Exhaut.
○Charge lamp does
not go on.
When the Key Returned
to ON from START after
Engine Starting:
○Buzzer keeps on
sounding
○One of the warning
lamps does not go out.
Reference
3.2.2
4.3.1(1)
4.3.1(1)
3.2.3
3.2.4(1)
3.2.1
[NOTICE]
Do not run the engine with alarm devices still unrepaired.
Trouble will progress and a serious problems may result.
2.5
Circuit broken or
buzzer defective.
Ask for repairs.
(Note) Other warning lamps do not go on when the switch is
turned on. They only go on when there is an abnormality.
Circuit broken or lamp
burnt out.
Ask for repairs.
Short-circuit (if lamp
goes out)
Sensor switches faulty
Ask for repairs.
_
46
_
Ask for repairs.
Trouble
○Charge lamp does
not go out
during operation
Probable Cause
Measure
V-belt broken or loose
Reference
Replace V-belt; adjust
tension
Check fluid level,
specific gravity;
replace.
Ask for repairs.
4.3.5(1)
No fuel
Improper fuel
Fuel injection faulty.
Compression leaks from
intake/exhaust valve.
Resupply fuel; bleed air.
Use recommended fuel.
Ask for repairs.
3.2.1(1)
3.1.1
Neutral safety switch engaged
Battery charging
insufficient.
Cable terminal contact
failure
Switch of safety
device faulty.
Starter switch faulty.
Battery power lacking due
to other use.
Shift clutch to Neutral.
Check fluid level;
re-charge; replace.
Remove rust from
terminal; retighten.
○Engine can't be turned
manually
Internal parts seized;
broken.
Ask for repairs.
●Poor Exhaust Color
○Black smoke
Load increased
Inspect propeller
system
Battery defective.
Alternator power
generation failure
●Starting Failures
○Starter works
but engine does not
start
○Starter does not
work or works
only slowly. (eng.can
be turned manually)
Turbocharger blower
contaminated.
Fuel improper.
Faulty spraying by
F.O. injection valve
Int./exh. valve head
clearance excessive
○White smoke
47
Ask for repairs.
3.3.2(1)
4.3.2(3)
Ask for repairs.
Ask for repairs.
Consult your dealer.
Clean blower.
Use recommended fuel
3.1.1
Ask for repairs.
Improper fuel
Faulty spraying by
F.O. injection valve
F.O. injection timing lags
Lube oil burns;
excessive consumption
_
4.3.2(3)
_
Use recommended fuel
Ask for repairs.
Ask for repairs.
Ask for repairs.
3.1.1
_
48
_
COOLING SEA WATER INLET
COOLING SEA WATER PUMP
WATER TEMP, SENDER
(OPTIONAL)
THERMOSTAT
HOT WATER HEATER RETURN
COOLING FRESH WATER PUMP
WATER TEMP, SWITCH
HOT WATER HEATER RETURM
SAFETY YALVE
FUEL OIL OVERFLOW
FUEL OIL FILTER
OIL PUMP
FUEL FEED PUMP
FUEL OIL INLET
P
P
P
MAIN BEARING
CAMSHAFT BEARING
P
From F.O. TANK
OIL INLET FILTER
COOLING NOZZLE OF PISTON
FRESH WATER
COOLER
FUEL INJECTION NOZZLE
ENG, LUBE OIL C O O LER
OIL ORESSURE REGUL ATER VALVE
FUEL INJECTION PUMP
EXHAUST MANIFOLD
ROCKER SHAFT
LUB. OIL FILTER (BY-PASS)
LUB. OIL FILTER (FULL)
COOLING SEA
WATER OUTLET
MIXING ELBOW (OPTIONAL)
MARINE GEAR LUBE
OIL COOLER
( KMH6A, KMH6A1 )
TO ROOM HEATER
BY HOT WATER
INTER COOLER
6. SYSTEM DIAGRAMS
6.1 Piping diagram
Charge
Eng. Oil P.
C.W. Temp.
Exhaust
C.W. Level
Diesel Preheat
GLOW
OFF
ON
START
RG
O
P
Tacho with
Hour meter
*Cotrol panel
LW
WR
WG
WL
YW
LB
Red
Black
White
Yellow
Blue
Green
Orange
Light green
Light blue
Brown
Pink
Gray
Purple
30 AC 17 G1 G2 P1 P2 AR
〇
〇
〇
〇
〇
〇
〇
〇 〇
〇 〇
〇
〇
〇
〇 〇
Starter Switch
Details of
coupler A-A
YB GB G GR
WB YR Y WR
YW WL WG B
RB LB O YG
3R 2W
3L
R
B
W
Y
L
G
O
Lg
Lb
Br
P
Gr
Pu
R
BZ
Buzzer
RG
GrB
GR
YR
WL
YW
WG
_
Buzzer
stop Illumi
Fuse
3A
17
RB
OG
RG
GrB
RG
49
R
_
RB
G2
WBr
G1
3W
3L
3R
Starter switch
P1 30
P2 AR
AC
W
Stop switch
LW
LY
L
*Wire Harness
A
A
WBr
Relay
RB
WG
WR
YR
B
WL
2W
Relay
*
3R
Starter
Relay
E
YB
Tacho Sensor
O
Alternator
R
L
8B
R
S or C
Starter
Note:
* Optional
available for New B-type
** Not
Local
*** (Batlerysupply
and Batlery switch)
** Boost
Sender
GB
RB
LB
8R
−
B
WB
Earth Bolt
Temp.
Pressure
** C.W.
** Eng.Oil
Sender
Sender
Eng. Oil Pressure
Switch
YW
2W
* C.W.Leved switch
WB
5L
*** Battery switch
Neutral switch
C.W.Temp.
switch
*Growplug
** Boost Switch
* S.W.Flow
switch
3L
Eng. stop solenoid
12V
Battery
+
1
2
Procured by customer
1 + 2 + 3 <2.5m → 20mm2
1 + 2 + 3 < 5m → 40mm2
(Cross sectional area)
3
Color coding
6.2 Wiring diagram
(1) New B-type Control panel
GR
YB
Charge
Eng. Oil P.
C.W. Temp.
Exhaust
C.W. Level
Boost
Diesel Preheater
Fuel emp.
YB
Eng. oil
p. meter
30 AC 17 G1 G2 P1 P2 AR
GLOW 〇
〇
〇
〇
OFF
〇
〇
〇
ON
〇 〇
〇 〇
START 〇
〇
〇
〇 〇
Starter Switch
Details of
coupler C-C
RB GW BW
GY BR B
Details of
coupler A-A
YB GB G GR
WB YR Y WR
YW WL WG B
RB LB O YG
3R U3W
3L
Eng. oil p
C.W. Temp.
Exhaust
C.W. Level
Boost
Diesel Preheater
Fuel emp.
U
RG
WB
P
O
RG
WB
LW
GY
YR
WR
WG
YW
WL
R
RG
GrB
BZ
Buzzer
Fuse
3A
17
RB
Buzzer
stop Illumi
*Control panel
O
C.W. Temp Tacho with
Hour meter
meter
LB
R
RG
GrB
Buzzer
stop Illumi
AR
G1
3L
3R
3W
P1 30
P2
G2
AC
WBr
Starter switch
W
Stop switch
L
LY
LW
Fuse
3A
17
RB
G2
WBr
G1
3W
3L
3R
Starter switch
P1 30
P2 AR
AC
W
Stop switch
L
LY
LW
panel (No2 station) Option
*Control
(In case of New C-type)
GY
YR
LW
WR
YG
YW
WL
LB
U
BZ
Buzzer
YR
C.W. Temp Tacho with
Hour meter
meter
R
Eng. oil
p. meter
OG
RG
GrB
RG
RB
RW
GR
Red
Black
White
Yellow
Blue
Green
Orange
Light green
Light blue
Brown
Pink
Gray
Purple
GR
GR
R
B
W
Y
L
G
O
Lg
Lb
Br
P
Gr
Pu
WR
WL
YW
YR
WL
YW
WG
_
OG
RG
GrB
RG
50
R
_
RB
C
C
harness
Wire
* forWire2 panel
*harness
Relay
WBr
A
A
Relay
Br
RB
WG
WR
YR
B
WL
2W
Relay
WB
3R
O
Alternator
R
L
Starter
YB
B
WB
Earth bolt
Temp
* C.W.sender
S or C
Tacho sensor
R
E
8B
RB
LB
8R
Battery
12V
pressure
* Eng.oilsender
Note:
* Optional
** Not available for New C-type
*** Local supply
(Batlery and Batlery switch)
** Boost
sender
GB
Starter
relay
Eng. oil pressure
switch
YW
2W
*** Battery switch
*5LNeutral switch
*C.W.Level switch
C.W.Temp
switch
*Growplug
* Boost switch
* S.W.Flow
switch
3L
Eng. stop solenoid
1
2
Procured by customer
1 + 2 + 3 <2.5m → 20mm2
1 + 2 + 3 < 5m → 40mm2
(Cross sectional area)
3
Color coding
(2) New C-type control panel
GLOW
OFF
ON
START
Charge
Eng. Oil P.
C.W. Temp.
Exhaust
C.W. Level
Boost
Diesel Preheater
Fuel emp.
+− U
+−U
YB
Eng. oil
p. meter
Boost
meter
30 AC 17 G1 G2 P1 P2 AR
〇
〇
〇
〇
〇
〇
〇
〇 〇
〇 〇
〇
〇
〇
〇 〇
Starter Switch
Details of
coupler C-C
RB GW BW
GY BR B
Details of
coupler A-A
YB GB G GR
WB YR Y WR
YW WL WG B
RB LB O YG
3R 3W
3L
Eng.oil p
C.W. Temp
Exhaust
C.W. Level
Diesel Preheater
LB
LB
RG
WB
GY
LW
YR
WG
WR
YW
WL
+− U
BZ
Buzze
stop Illumi
Fuse
3A
17
RB
O
R
RG
GrB
Buzzer
stop Illumi
*Control panel
+− P
BZ
Buzzer
Fuse
3A
17
RB
AR
G1
3R
3L
3W
P1 30
P2
L
LY
LW
WBr
AR
G1
P2
3R
3L
3W
P1 30
Starter switch
W
Stop switch
G2
AC
WBr
Starter switch
G2
AC
W
Stop switch
panel (No2 station) Option
*Control
(In case of New B-type)
C.W. Temp Tacho with
Hour meter
meter
WR
LW
WL
WG
YW
O
R
RG
GrB
GR
GR
RG
+− P
YR
Buzzer
RB
Tacho with
Hour meter
WL
YW
WG
YR
WR
WL
YW
Red
Black
White
Yellow
Blue
Green
Orange
Light green
Light blue
Brown
Pink
Gray
Purple
GR
GR
R
B
W
Y
L
G
O
Lg
Lb
Br
P
Gr
Pu
OG
RG
GrB
RG
R
OG
RG
_
GrB
RG
51
R
_
RB
C
C
harness
Wire
*Wire
for 2 panel
*harness
Relay
WBr
A
A
Relay
Br
RB
WG
*
3L
YR
B
*
Starter
relay
3R
* Boost
sender
GB
*C.W.Leved switch
WB
RB
LB
8R
Alternator
O
R
L
Starter
S or C
YB
Tacho sensor
R
E
8B
Battery
12V
B
WB
Earth bolt
Temp.
pressure
* C.W.sender
* Eng.oilsender
Eng. oil pressure
switch
YW
2W
Note:
Optional
Local supply
(Battery and Battery switch)
* **
WL
2W
5L
*** Battery switch
* Neutral switch
Relay
C.W.Temp.
switch
*Growplug
* Boost switch
S.W.Flow
switch
WR
Eng. stop solenoid
1
2
Procured by customer
1 + 2 + 3 <2.5m → 20mm2
1 + 2 + 3 < 5m → 40mm2
(Crocuredctional area)
3
Color coding
(3) New D-type control panel
WARRANTY SERVICE
Owner Satisfaction
Your satisfaction and good will are important to your dealer and to us.
Normally, any problems conceming the product will be handled by our dealer's service department. If you have a warranty problem that has not been handled to your satisfaction, we
suggest you take the following action:
● Discuss
your problem with a member of dealership management. Often complaints can be
quickly resolved at that level. If the problem has already been reviewed with the Service
Manager, contact the owner of the dealership or the General Manager.
● If
your problem still has not been resolved to your satisfaction, contact your Yanmar local
Subsidiary Company.
YANMAR DIESEL AMERICA CORP.
951 Corporate Grove Drive, Buffalo Grove, IL 60089-4508, U.S.A
TEL: (847) 541-1900
FAX: (847) 541-2161
YANMAR EUROPE B. V.
Bruegplein 11, 1332 BS Almere-De Vaart, P.O. Box 30112,
1303 AC Almere, The Netherlands
TEL:
36-5493200
FAX:
36-5493209
TELEX: 70732 YMR A NL
YANMAR ASIA (SINGAPORE) CORPORATION PTE LTD.
4 Tuas Lane, Singapore 2263
TEL:
861-3855
FAX:
862-5195
TELEX: RS 35854 YANMAR
We will need the following information in order to assist you:
Your name, address and telephone number
Product model and serial number (see the name plate affixed on the engine)
● Date of purchase
● Dealer name and address
● Nature of problem
●
●
After reviewing all the facts involved, you will be advised of what action can be taken. PIease
bear in mind that your problem will likely be resolved at the dealership, using the dealer's
facilities, equipment and personnel, so it is very important that your initial contact will be with
the dealer.
OVERSEAS OPERATIONS DIVISION
1-32, CHAYAMACHI, KITA-KU, OSAKA 530-8311, JAPAN
TEL : 81- 6-6376-6411
FAX : 81- 6-6377-1242
YANMAR DIESEL AMERICA CORP.
951 CORPORATE GROVE DRIVE, BUFFALO GROVE, IL 60089-4508, U.S.A.
TEL : 1-847-541-1900
FAX : 1-847-541-2161
YANMAR EUROPE B.V.
BRUGPLEIN 11, 1332 BS ALMERE-DE VAART, THE NETHERLANDS P. O. BOX 30112, 1303
TEL : 31-36-5493200
FAX : 31-36-5493209
YANMAR ASIA (SINGAPORE ) CORPORATION PTE LTD.
4 TUAS LANE. SINGAPORE 638613
TEL : 65-861-3855
FAX : 65-862-5195
User's record
Date of purchase
Place of purchase (Name of dealer)
49961-205581