Yanmar 3YM30E Specifications

Add to my manuals
56 Pages

advertisement

Yanmar 3YM30E Specifications | Manualzz
3YM20/3YM30
MARINE DIESEL ENGINE
MODEL:2YM15/3YM20/3YM30
OPERATION MANUAL
The 2YM15/3YM20/3YM30 is an EPA Certified Engine.
It meets the low emission standards set by the EPA.
California Proposition 65 Warning
California Proposition 65 Warning
Diesel engine exhaust and some of its
constituents 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 your hands
after handling.
Yanmar
Copyright © 2004 Yanmar CO., LTD
All rights reserved. This manual may not be reproduced or copied, in whole or in part, without the written permission of YANMAR CO., LTD.
EN
INTRODUCTION ........................................... 3
1. FOR YOUR SAFETY ............................... 4
1.1 Warning Symbols .............................. 4
1.2 Safety Precautions ............................ 5
1.3 Warning Labels ................................. 8
EN
2. PRODUCT EXPLANATION ..................... 9
2.1 Use, Propulsion System, Etc. ............ 9
2.2 Engine Specifications ...................... 11
2.3 Names of Parts ............................... 14
2.4 Major Service of Parts ..................... 17
2.5 Control Equipment .......................... 18
2.5.1 Instrument Panel ................... 18
2.5.2 Controls and equipment ........ 18
2.5.3 Meters ................................... 19
2.5.4 Alarm equipment (lamps and
buzzer) 19
2.5.5 Normal action of alarm devices .
19
2.5.6 Single Lever Remote Control
Handle 20
2.5.7 Shut-down Equipment ........... 20
3. OPERATION .......................................... 21
3.1 Fuel Oil, Lubricating Oil, and Cooling
Water 21
3.1.1 Fuel Oil .................................. 21
3.1.2 Lubricating Oil ....................... 22
3.1.3 Cooling fresh water ............... 24
3.1.4 Handling of Coolant ............... 24
3.2 Before Initial Operation ................... 25
3.2.1 Supply Fuel Oil ...................... 25
3.2.2 Supply Engine Lubricating Oil 25
3.2.3 Supply Marine Gear Lubricating
Oil 25
3.2.4 Supply Cooling Water ............ 26
3.2.5 Cranking ................................ 27
3.2.6 Check and Re-supply Lubricating
Oil and Cooling Water 28
3.3 Operating your engine .................... 28
3.3.1 Daily Start Up Inspection ....... 28
3.3.2 How to Start the Engine ........ 30
3.3.3 Operation ............................... 32
3.3.4 Cautions During Operation .... 32
3.3.5 Engine shut-down .................. 33
3.4 Long Term Storage ......................... 34
4. MAINTENANCE AND INSPECTION ......36
4.1 General Inspection Rules ................36
4.2 List of Periodic Inspection Items ......37
4.3 Periodic Inspection Items ................39
4.3.1 Inspection on Initial 50 Hrs. of
Operation (or after 1 Month) 39
4.3.2 Inspection Every 50 Hrs. (or
Monthly) 41
4.3.3 Inspection Every 100 Hrs (or six
months). 43
4.3.4 Inspection Every 150 Hrs (or one
year). 43
4.3.5 Inspection Every 250 Hrs (or one
year). 43
4.3.6 Inspection Every 1000 Hrs (or 4
years). 45
4.3.7 Annually .................................46
4.4 EPA Requirements ..........................47
4.4.1 EPA Certification Plate ...........47
4.4.2 Conditions to Insure Compliance
with Emission Standards 47
4.4.3 Inspection and Maintenance ..48
5. TROUBLE AND TROUBLESHOOTING .49
6. PIPING DIAGRAMS ...............................52
7. WIRING DIAGRAMS ..............................53
INTRODUCTION
Thank you for purchasing a YANMAR Marine Diesel Engine.
This Operation Manual describes the operation, maintenance and inspection of the
2YM15/3YM20/3YM30Yanmar Marine Diesel Engines.
Read this Operation Manual carefully before operating the engine to ensure that it 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 transferred to subsequent owners. It should be considered as a
permanent part of the engine and remain so.
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 this, please contact your Yanmar dealer or distributor.
EN
Operation Manual
(Marine Engine)
Model
2YM15/3YM20/3YM30
Code. No.
49961-206364
The essentials of the sail drive are described in this manual. For further details on its use,
refer to the sail drive manual.
3
1. FOR YOUR SAFETY
1. FOR YOUR SAFETY
1.1 Warning Symbols
Most operation, maintenance and inspection problems arise due to users' failure to
comply with the rules and precautions for
safe operation described in this operation
manual. Often, users do not understand or
recognize the signs of approaching problems. Improper handling can cause burns
and other injuries and can result in death.
EN
Be sure to read this operation manual
carefully before operating the engine and
observe all of the instructions and precautions described in this manual. Follow the
warning signs below in this manual. Pay
special attention to parts containing these
words and signs.
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. This sign
is also used to alert against unsafe practices.
NOTICE
The descriptions captioned by
are particularly important cautions for
handling. If you ignore them, the performance of your machine may deteriorate leading to
problems.
4
1. FOR YOUR SAFETY
1.2 Safety Precautions
(Observe these instructions for your own safety!)
Precautions for Operation
DANGER
Filler Cap of Coolant Tank
Never open the cap of the coolant tank while the engine is still hot.
Steam and hot water may spurt out and burn you seriously. Wait until
the temperature of the coolant tank has dropped, wrap a cloth around
the filler cap, loosen the cap very carefully and slowly to remove the
system pressure before removing the cap. After inspection, refasten the
cap firmly.
DANGER
Battery
Never smoke or permit sparks near the battery, because it may emit explosive hydrogen gas. Place the battery in a well-ventilated place.
DANGER
Fuel
Use only diesel fuel. Never use other fuels, including gasoline, kerosene, etc., because they could cause a fire. The wrong fuel could also
cause the fuel injection pump and injector to fail due to lack of proper
lubrication. Be sure to check that you have selected the correct diesel
fuel before filling the fuel tank.
Do not use starting fluids or sprays. Their use may cause explosion, serious injury and engine damage.
WARNING
Fire Prevention
Be sure to stop the engine and confirm that there are no open flames in
the vicinity before fueling. If you do spill fuel, wipe such spillage carefully and dispose of the wiping materials properly. Wash your hands thoroughly with soap and water.
Never place oil or other flammable material in the engine room.
Install a fire extinguisher near the engine room, and familiarize yourself
with its use.
WARNING
Exhaust Gas
Exhaust gas contains poisonous carbon monoxide and should not be
inhaled.
Be sure to install ventilation ports or ventilators in the engine room and
ensure good ventilation during engine operation.
5
EN
1. FOR YOUR SAFETY
WARNING
Moving Parts
Do not touch or let your clothing get caught in the moving parts of the
engine, such as the front drive shaft, V-belt or propeller shaft, during engine operation. You will be injured.
Never operate the engine without covers on the moving parts.
CAUTION
Burns
The whole engine is hot during operation and immediately after
shut-down. The exhaust manifold, exhaust pipe and high pressure fuel
lines are very hot. Never touch these parts with your body or clothing.
WARNING
Alcohol
Never operate the engine while you are under the influence of alcohol.
Never operate the engine when you are ill or not feeling well.
DANGER
Battery Fluid
Battery fluid is dilute sulphuric acid. It can blind you if it gets in your
eyes, or burn your skin. Keep the fluid away from your body.
If you touch it, wash it off immediately with a large quantity of fresh water and call your doctor for treatment.
WARNING
Fire by Electric Short-Circuits
Always turn off the battery switch before inspecting the electrical system.
Failure to do so could cause short-circuiting and fires.
WARNING
Stop the engine before you service it.
Turn the battery switch off. If you must inspect while the engine is in operation, never touch moving parts. Keep your body and clothing well
clear of all moving parts.
EN
6
1. FOR YOUR SAFETY
CAUTION
Scalds
When extracting oil from the engine while it is still hot, don't let the oil
splash on you.
Wait until the temperature has dropped before extracting cooling water
from the engine. Don't let it splash on you.
DANGER
Forbidden Modifications.
Never release the limiting devices such as the engine speed limit, fuel
injection limit, etc.
Modification will impair the safety and performance of the product and
shorten product life.
Also note that any troubles arising from modification are not covered by
our warranty.
DANGER
Precautions for Treating Waste.
Never dispose of waste oil or other fluid in a field, sewer, river, or the
sea.
Treat waste matters safely observing regulations or laws.
Ask a waste recovery company to collect it.
EN
7
1. FOR YOUR SAFETY
1.3 Warning Labels
B
A
DANGER
WARNING
Safety Precautions for Inspection
To insure safe operation, warning device
labels have been attached. Their location
is shown below and they should always be
visible. Please replace if damaged or lost.
Product Safety Labels
No.
Part Code No.
A
128377-07260
B
128377-07350
C
196630-12980
C
196630-12980
EN
8
2. PRODUCT EXPLANATION
2. PRODUCT EXPLANATION
2.1 Use, Propulsion System, Etc.
The engine is equipped with a marine gear
or a sail drive unit. The marine gear output
shaft connects with the propeller shaft.
In order to obtain full performance from
your engine, it is imperative that you check
the displacement and structure of the hull
and use a propeller of the appropriate size.
As new boats are used, owners add additional equipment and completely fill the
fuel and water tanks adding to the overall
displacement (weight) of the vessel. Extra
canvas enclosures, bottom paint, and bottom fouling can add additional hull resistance. It is recommended that new vessels
be propped so the engines can operate at
100-200 rpm above rated rpm to allow for
some added weight and hull resistance.
Failure to do so can lead to reduced vessel
performance, lead to increased smoke levels and cause permanent damage to your
engines.
The engine must be installed correctly with
safe cooling water and exhaust piping and
electrical wiring. Any auxiliary equipment
attached to the engine should be easy to
use and accessible for service.
To handle the drive equipment, propulsion
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.
NOTICE
This engine is designed for pleasure
boat applications.
The engine is designed to be operated
at:
Maximum throttle (3600-3800 rpm) for
less than 5% of total engine time. (30
minutes out of every 10 hours)
EN
Cruising Speed (3400 rpm or lower) for
less than 90% of total engine time (9
hours out of every 10 hours)
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.
9
2. PRODUCT EXPLANATION
DETAIL OF NAMEPLATE
The nameplate shown below is attached to the
engine. Check the engine's model, output, rpm and
serial number on the nameplate.
Model
Gear Model
rpm
Continuous power
rpm
Speed of prop. shaft
rpm
Fuel stop power kW
YANMAR DIESEL ENGINE
YANMAR CO., LTD.
MADE IN JAPAN
10
MODEL
GEAR RATIO
OIL
OIL QTY.
NO.
KM
SAE 20 / 30 HD
LTR.
KANZAKI
OSAKA
ENG.No.
EN
The nameplate shown below is attached to the
marine gear. Check the marine gear's model, gear
ratio, oil used, oil quantity and serial number.
JAPAN
2. PRODUCT EXPLANATION
2.2 Engine Specifications
Engine Model
unit
2YM15
Marine gear model
-
KM2P-1
SD-20
Use
-
Pleasure use
Type
-
Vertical water-cooled 4-cycle diesel engine
Combustion system
-
Swirl pre-combustion chamber
Number of cylinders
-
2
Bore x stroke
mm(inch)
70x74(2.76x2.91)
Displacement
L
0.570
9.4(12.8)/3489(at Fuel temp. 25°C)[2]
Continuous
power
Output at crankshaft/
Engine speed
kW(hp)/
Fuel stop
power
Output at crankshaft/
Engine speed
kW(hp)/
10.3(14.0)/3600(at Fuel temp. 25°C) [2]
min-1[1]
/10.0(13.6)/3600(at Fuel temp. 40°C) [2]
Output at propeller/
Engine speed
kW(hp)/
10.0(13.6)/3600(at Fuel temp. 25°C) [2]
min-1[1]
/9.7(13.2)/3600(at Fuel temp. 40°C) [2]
Installation
-
Fuel injection opening pressure
Direction of
rotation
12.3+0.98-0
-
Counter-clockwise viewed from stern
Propeller shaft
(Ahead)
-
Cooling water capacity (fresh)
Clockwise viewed from stern
EN
-
Fresh water-cooling with heat exchanger
-
Complete enclosed forced lubrication
L(quart)
Engine 3.0 (3.2), Coolant recovery tank: 0.8(0.8)
Rake angle
°(deg)
at rake angle 8°
at rake angle 0°
[3]
L(quart)
2.0(2.1)
1.8(1.9)
0.95(1.0)
0.9(1.0)
Total
Effective[4]
Starting sys- Type
tem
Starting motor
-
Electric
V-kW
DC 12V - 1.4 kW
AC generator
V-A
12V - 60A (12V - 80A optional)
Overall length
mm(inch)
613(24.1)
Overall width
463(18.2)
Overall height
528(20.8)
Engine dry mass (include marine
gear)
[1]
[2]
[3]
[4]
Flexible mounting
Crankshaft
Lubrication system
Engine
dimension
-
MPa
Cooling system
Lubricating
oil capacity
(engine)
min-1[1]
kg
113
-
134(with SD20)
hp = 0.7355 kW
Fuel temperature at the inlet of the fuel injection pump.
The "Total" oil quantity includes oil in oil pan, channels, coolers and filter.
The effective amount of oil shows the difference in maximum scale of the dipstick and minimum
scale.
Note: Fuel condition: Density at 15 ºC = 0.842
Rating condition ISO 3046-1, at fuel temp. 25°C ; ISO 3046-1, at fuel temp. 40°C inlet; ISO 8665. At FO
pump inlet.
11
2. PRODUCT EXPLANATION
Engine Model
unit
3YM30
-
Use
-
Pleasure use
Pleasure use
Type
-
Vertical water-cooled 4-cycle diesel
engine
Vertical water-cooled 4-cycle diesel
engine
Combustion system
-
Swirl pre-combustion chamber
Swirl pre-combustion chamber
Number of cylinders
-
3
3
mm(inch)
70x74(2.76x2.91)
76x82(2.99x3.23)
Bore x stroke
Displacement
KM2P-1
SD-20
KM2P-1
SD-20
L
1.115
1.115
Continuous
power
Output at
crankshaft/
Engine speed
kW(hp)/
min-1[1]
14.7(20.0)/3489(at Fuel temp. 25°C)[2]
20.1(27.3)/3489(at Fuel temp. 25°C) [2]
Fuel stop
power
Output at
crankshaft/
Engine speed
kW(hp)/
min-1[1]
16.2(22.0)/3600(at Fuel temp. 25°C) [2] 22.1(30.0)/3600(at Fuel temp. 25°C) [2]
/15.3(20.8)/3600(at Fuel temp. 40°C) [2] /21.3(29.0)/3600(at Fuel temp. 40°C) [2]
Output at propeller/Engine
speed
kW(hp)/
min-1[1]
15.7(21.3)/3600(at
Fuel temp. 25°C) [2]
/14.9(20.2)/3600(at
Fuel temp. 40°C) [2]
Installation
EN
3YM20
Marine gear model
-
21.4(29.1)/3600(at
Fuel temp. 25°C) [2]
/20.7(28.1)/3600(at
Fuel temp. 40°C) [2]
-
-
Flexible mounting
Flexible mounting
Fuel injection opening pressure
MPa
12.3+0.98-0
12.3+0.98-0
Direction Crankshaft
of rotation
Propeller shaft
(Ahead)
-
Counter-clockwise viewed from stern
Counter-clockwise viewed from stern
-
Clockwise viewed
from stern
Clockwise viewed
from stern
Cooling system
-
Lubrication system
Cooling water capacity
(fresh)
Lubricating oil
capacity
(engine)
Starting
system
Engine
dimension
Rake angle
Total[3]
Effective
Fresh water-cooling with heat
exchanger
Fresh water-cooling with heat
exchanger
-
Complete enclosed forced lubrication
Complete enclosed forced lubrication
Engine 4.5 (4.8), Coolant recovery tank:
0.8(0.8)
Engine 4.9(5.2), Coolant recovery tank:
0.8(0.8)
°(deg)
at rake angle 8°
at rake angle 0°
at rake angle 8°
at rake angle 0°
L(quart)
2.7(2.85)
2.4(2.5)
2.8(3.0)
2.5(2.6)
1.4(1.5)
1.5(1.6)
1.4(1.5)
1.5(1.6)
-
Electric
Electric
V-kW
DC 12V - 1.4 kW
DC 12V - 1.4 kW
AC generator
V-A
12V - 60A (12V - 80A optional)
Overall length
mm(inch)
Starting motor
693(27.3)
Overall width
-
12V - 60A (12V - 80A optional)
715(28.1)
463(18.2)
Overall height
Engine dry mass (include
marine gear)
[1]
[2]
[3]
[4]
-
L(quart)
[4]
Type
-
528(20.8)
kg
130
151(with SD20)
463(18.2)
545(21.5)
133
154(with SD20)
hp = 0.7355 kW
Fuel temperature at the inlet of the fuel injection pump.
The "Total" oil quantity includes oil in oil pan, channels, coolers and filter.
The effective amount of oil shows the difference in maximum scale of the dipstick and minimum
scale.
Note: Fuel condition: Density at 15 ºC = 0.842
Rating condition ISO 3046-1, at fuel temp. 25°C ; ISO 3046-1, at fuel temp. 40°C inlet; ISO 8665. At FO
pump inlet.
12
2. PRODUCT EXPLANATION
Marine gear
or Sail Drive
Model
Unit
KM2P-1(S) KM2P-1(G) KM2P-1(GG)
SD20 (coupled
at boat builder)
Mechanical cone clutch
Dog clutch
Type
-
Reduction ratio (Forward/Reverse)
-
2.21/3.06
2.62/3.06
3.22/3.06
2.64/2.64
Propeller speed (For-
min-1
1580/1140
1332/1140
1083/1140
1322
ward/Reverse)
[1]
Lubrication system
-
Lubricating oil capacity L (quart)
Mass
kg
Splash
Oil bath
0.3 (0.32)
2.2 (2.3)
9.8
30
[1] At continuous power engine speed 3489 min-1
EN
13
2. PRODUCT EXPLANATION
2.3 Names of Parts
2YM15
Operation Side
A
B
C
D
E
F
G
EN
H
I
A
B
C
D
E
Intake silencer
Intake manifold
Fuel filter
Fuel injection pump
Dipstick
F
G
H
I
Oil filler cap
Fuel feed pump
Lubricating oil filter
Marine gear
Non Operation Side
D
C
E
F
H
A
A
C
D
E
14
I
G
Seawater pump
F
Filler cap
G
Engine name plate (on the rocker arm cover)H
Coolant tank / Heat exchanger
I
Exhaust manifold
Starter motor
Shift lever
Alternator
2. PRODUCT EXPLANATION
3YM20
Operation Side
B
A
C
D E
F
G
H
I
A
B
C
D
E
Intake silencer
Intake manifold
Fuel filter
Fuel injection pump
Dipstick
F
G
H
I
Oil filler cap
Fuel feed pump
Lubricating oil filter
Marine gear
EN
Non Operation Side
C
D
E
F
G
I
H
A
A
C
D
E
Seawater pump
F
Filler cap
G
Engine name plate (on the rocker arm cover)H
Coolant tank / Heat exchanger
I
Exhaust manifold
Starter motor
Shift lever
Alternator
15
2. PRODUCT EXPLANATION
3YM30
Operation Side
B
A
C
D E
F
G
H
I
EN
A
B
C
D
E
Intake silencer
Intake manifold
Fuel filter
Fuel injection pump
Dipstick
F
G
H
I
Oil filler cap
Fuel feed pump
Lubricating oil filter
Marine gear
Non Operation Side
C
D
E
F
G
I
H
A
A
C
D
E
16
Seawater pump
F
Filler cap
G
Engine name plate (on the rocker arm cover)H
Coolant tank / Heat exchanger
I
Exhaust manifold
Starter motor
Shift lever
Alternator
2. PRODUCT EXPLANATION
2.4 Major Service of Parts
Name of part
Function
Fuel filter
Removes dirt and water from fuel. Drain the filter periodically. The element (filter)
should be changed. See maintenance section 4.3.5
Fuel feed pump
Pumps fuel from tank to the fuel injection pump.
Priming lever
Moving the priming lever up and down feeds the fuel. The priming lever is used to
bleed air from the fuel system after running out of fuel.
Filler port (engine) Filler port for engine lubricating oil.
Filler port (marine
gear)
Filler port for marine gear lubricating oil.
Lubricating oil filter
Filters fine metal fragments and carbon from the lubricating oil. Filtered lubricating oil is
distributed to the engine's moving parts.
Cooling System
There are two cooling systems: fresh water and seawater. The engine’s combustion
heat is cooled by the fresh water/coolant in a closed circuit. The fresh water is cooled
by seawater using heat exchanger. The seawater also cools the engine- and gear-oil
(and depending on the model also intake air) through coolers in an open circuit.
Fresh water pump
The centrifugal water pump circulates fresh cooling water inside the engine. The fresh
water pump is driven by the V-belt.
Seawater pump
Pumps seawater from outside the vessel to the engine by passing through the engine’s
coolers. The seawater pump is belt driven and has a replaceable rubber impeller.
Fresh water/coolant filler cap
The filler cap on the coolant tank covers the water supply port. The cap has a pressure
regulating valve. When the cooling water temperature rises the pressure rises inside
the fresh water system.
Coolant recovery
tank
The pressure regulating valve releases vapour and hot water overflows to the coolant
recovery tank When the engine stops and cooling water cools, the pressure in the cooling water tank also drops very low. The filler cap valve then opens to send water back
from the coolant recovery tank. This minimizes cooling water consumption. Fresh
water/coolant level can easily be checked and refilled in this tank.
Intake silencer
The intake silencer guards against dirt in the air and reduces the noise of air intake.
Nameplates
Nameplates are provided on the engine and the marine gear and have the model,
serial number and other data.
Starter
Starter motor for the engine. Powered by the battery.
Alternator
Rotated by belt drive, generates electricity and charges the battery.
17
EN
2. PRODUCT EXPLANATION
2.5 Control Equipment
B type
The equipment in the control room, making remote control possible, consists of the
instrument panel, which is connected by
wire harness and the remote control handle, which is hooked up by remote control
cables to the engine control lever and marine gear.
H
I
J
K
STOP
20
30
-1
min
Mpa
40
10
0 50
2.5.1 Instrument Panel
SLOW
OFF
ON
START
trancasers
2.5.1.1 Controls and equipment
The instrument panel is located in the control room. The following instruments enable you to start / stop the engine and to
monitor its condition during operation.
A
B
A Tachometer
EN
B Hour meter
E Key switch
F Moisture cap for key
switch
G Stop button switch
Instruments, equipment
Key switch
Rotary switch with 4 positions
F
G
H Coolant high temperature alarm
I Lubricating oil low pressure alarm
J Water in sail drive seal
alarm
K Battery low charge
alarm
Functions
OFF
The switch key can be inserted or removed. All electric current is cut
off.
ON
The electric current to the controls and equipment is turned on.
Engine keeps running. To stop the engine, the key switch should be
in ON position. After stopping the engine, please turn OFF the key
switch.
START
The start position of the engine. The electric current to the starting
motor is turned on. When you release the key, it will automatically
turn to ON position.
GLOW
The start aid position of the engine. The electric current to the air
heater /glow plug is turned on. When you release the key, it will
automatically turn to ON position.
GLOW OFF ON
START
E
Note: When you don’t use the engine, please remove the key from the key switch and cover the
keyhole with the cap to protect from corrosion.
Stop button switch
18
Push button switch to stop the engine. The electric current to the stop solenoid
is turned on.
2. PRODUCT EXPLANATION
2.5.1.2 Meters
B type panels use analog electric systems and have a pointer indicator.
Instruments, equipment
Functions
Tachometer
The engine’s rotation speed is indicated.
Hour meter
The number of hours of operation is indicated, and can be used as a guide for
periodic maintenance checks. The hour meter is at the bottom of the tachometer.
Panel lights
When turning the key switch to ON, the meters light, for easy viewing.
2.5.1.3 Alarm equipment (lamps and buzzer)
When the sensor detects a problem during operation, the lamp comes on and the buzzer
sounds.
The alarm lamps are located on the panel, the buzzer is located on the back of panel. Under normal conditions, the monitors are off. When there is a problem, the monitors lights
up.
Battery low
charge alarm
Coolant high
temperature
alarm
Lubricating oil
low pressure
alarm
When the alternator output is too low, the lamp will come on. When charge
begins, the lamp will turn off. (The alarm buzzer will not sound, when the lamp
comes on.)
When the temperature reaches the maximum (95°C [203°F] or higher), the
lamp will light and the buzzer will sound. Continuing operation at temperatures
exceeding the maximum limit will result in damage and seizure. Check the load
and the fresh water cooling system for any abnormalities.
When the lubricating oil pressure falls below normal, the oil pressure sensor
will register this and the lamp will come on and the alarm will sound. Continuing
operation with insufficient oil pressure will result in damage and seizure. Check
the oil level.
Water in sail
When seawater is detected between the seals of the sail drive, the lamp will
drive seal alarm come on and the alarm will sound.
2.5.1.4 Normal action of alarm devices
Alarm devices act as shown below. Please check that alarm lamps and buzzer are working normally, when the key is turned on.
Key switch
OFF->ON
START->ON
Engine
Before start
Running
Sounds
Stops
Lights
Off
Off
Off
Lights
Off
Off
Off
Alarm buzzer
Alarm lamps
Battery low charge alarm
Coolant high temperature alarm
Lubricating oil low pressure alarm
Water in sail drive seal alarm
19
EN
2. PRODUCT EXPLANATION
2.5.2 Single Lever Remote Control
Handle
2.5.3 Shut-down Equipment
This remote control system uses a singlehandle to operate the marine gear-clutch
(neutral, forward, reverse) and to control
the engine speed.
Engine shut-down by stop button
Electric Operation
A
NEUTRAL: Power to the propeller shaft is
cut off and the engine idles.
A
D
C
A Stop button on the instrument panel
B
Push the stop button on the instrument
panel when the key is in the ON position.
E
EN
A FWD (forward)
D Clutch is disengaged
B REV (reverse)
E Pull out handle
C NEUTRAL (boat is stopped)
The handle controls the direction of the
boat (ahead or astern) and, at the same
time, acts as an accelerator increasing the
engine speed as it is pushed further in the
FWD or REV direction. If the handle is
pulled out, engine speed can be controlled
without engaging the clutch (clutch remains in the NEUTRAL, no load position).
CAUTION
If the engine is stopped suddenly at a
high temperature, the temperature of
various parts will increase and engine
trouble may occur.
Emergency Stop
When you can’t stop the engine by the stop
button on the panel, push the button at the
back of the stop solenoid.
NOTICE
Yanmar recommends the use of a single-lever type for the remote control
system. If only the two-lever type is
available in the market, operate the engine at 1000 rpm or lower before engaging and disengaging the marine
gear-clutch.
A
B
A Emergency stop button B Stop solenoid
20
3. OPERATION
3. OPERATION
3.1 Fuel Oil, Lubricating Oil, and
Cooling Water
3.1.1 Fuel Oil
NOTICE
Only use the recommended fuel to obtain the best engine performance and
to keep the durability of the engine,
also to comply with the emission regulations.
(1) Selection of Fuel Oil
Diesel fuel oil should comply with the
following specifications.
• The fuel specifications need to comply
with each national standard or international standards.
• ASTM D975 No.1-DNo.2-D ... for USA
• EN590:96 ................................ for EU
• ISO 8217 DMX .............. International
• BS 2869-A1 or A2 ................... for UK
• JIS K2204 ......................... for JAPAN
The following requirements also need
to be fulfilled.
• Aromatics (total) content of the fuel. It
should not exceed 35% by volume.
(Preferably it should be below 30%
and aromatics (PAH*) content of the
fuel preferably it should be below
10%)
PAH*: polycyclic aromatic hydrocarbons
• DO NOT use Biocide.
• DO NOT use Kerosene, residual fuels.
• DO NOT mix winter fuel and summer
fuel.
Note: Engine breakdown can be attributed
to insufficient quality of fuel oil.
(2) Handling of Fuel Oil
1. Water and dust in the fuel oil cause
engine failure. When fuel is stored, be
sure that the inside of the storage container is clean, and that the fuel is
stored away from dirt or rain water.
2. Keep the fuel container stationery for
several hours to allow any dirt or water
to settle to the bottom. Use a pump to
extract the clear, filtered fuel from the
top of the container for use.
• Cetane number should be equal to 45
or higher.
• Sulphur content of the fuel. It should
not exceed 0.5%by volume. (Preferably it should be below 0.05 %)
• Water and sediment in the fuel oil
should not exceed 0.05% by volume.
• Ash should not exceed 0.01%by
mass.
• 10% Carbon residue content of the fuel. It should not exceed 0.35%by volume. (Preferably it should be below
0.1 %)
Use the clear filtered fuel from the upper middle section of the container
only, leaving any contaminated fuel at
the bottom.
21
EN
3. OPERATION
(3) Fuel Tank
The inside of the fuel tank should always be clean enough and it should
be dry for the first use. Drain the water
according to the maintenance (section
5) with a drain valve.
NOTICE
When other than the specified fuel oil is
used, the engine will not perform to full
capacity and parts may be damaged.
3.1.2 Lubricating Oil
NOTICE
Using other than the specified lubricating oil will lead to seizure of parts, abnormal wear, and shorten engine life.
C
(1) Selection of Engine Lubricating Oil
Use the following Lubricating oil:
A
• API Classification ........... CD or better
TBN value: 9 or more
B
EN
A Sediment
B Drain cock
C To engine
(4) Fuel System
Install the fuel pipe from the fuel tank
to the fuel pump in accordance with
the diagram. The fuel/water separator
(optional) is placed at the center section of the line.
Fuel System
A
H
B
I
C
J
E
G
D
F
A Fuel filter
B Fuel feed pump (priming lever)
C Fuel/water separator
D Approx. 20-30 mm(3/
4”-1 1/8”)
E Within 500 mm(20”)
22
F Drain cock
G Fuel cock
H Fuel return
I To fuel injection pump
J Fuel tank
The oil must be changed when the Total Base Number (TBN) has been reduced to 2.0.
*TBN (mgKOH/g) test method;
JIS K-2501-5.2-2(HCl), ASTM
D4739(HCl)
• SAE viscosity ......... 10W30 or 15W40
If you operate your engine at temperatures below the limits shown below,
consult your dealer for special lubricants and starting aids.
3. OPERATION
Selection of viscosity (SAE Service
grade)
9
9
or QuickSilver® High Performance
Gear Lube
QuickSilver® is a registered trademark of the Brunswick Corporation.
(4) Handling the Lubricating Oil
1. When handling and storing lubricating
oil, be careful not to allow dust and water to enter the lubricating oil. Clean
around the filler port before refilling.
9
9
‫ ޓ ޓ ޓ ޓ ޓ ޓ ޓ‬
Atmospheric temperature (°C)
10W-30 can be used almost throughout the year.
DO NOT use The following engine
oils.
API : CG-4, CH-4
ACEA : E-1, E-2, B grade
JASO : DH-2, DL-1
Reason
• API CG-4, CH-4
In case CG-4, CH-4 is to be used for
YANMAR YM diesel engine series,
there is a possibility that excessive
wears occur on the valve train system
due to the content of oil.
• ACEA E-1,E-2, B
These fuels are developed for the different type of diesel engines.
• JASO DH-2, DL-1
These fuels are developed for the different type of diesel engines.
(2) Selection of Oil for Marine Gear
• API Classification ........... CD or better
• SAE viscosity ................... #20 or #30
(3) Selection of Oil for Sail Drive Unit
• API service grade ....................GL4.5
2. Do not mix lubricating oils of different
types or brands. Mixing may cause the
chemical characteristics of the lubricating oil to change and lubricating
performance to drop, reducing the engine's life. Before supplying lubricating
oil to the engine and marine gear for
the first time, extract any lubricating oil
remaining in the tank. Use new lubricating oil.
3. Lubricating oil supplied to the engine
will undergo natural degradation with
time even when the engine is not
used. Lubricating oil should be replaced at the specified intervals, regardless of whether the engine is
being used or not.
If you operate your equipment at temperatures below the limits shown, consult your dealer for special lubricants
and starting aids.
CAUTION
Contact with engine oil may result in
the roughened skin. Care should be
taken so as not to contact with engine
oil wearing protective gloves and clothing.
When handling the engine oil, make
sure to use the protective gloves at any
time.
If contact, wash with soap and water
thoroughly.
• SAE Viscosity ............... 90 or 80W90
23
EN
3. OPERATION
3.1.3 Cooling fresh water
Use clean soft water and always be sure to
add LLC (Long Life Coolant) in order to
prevent rust built up and freezing. (Do not
use water only.)
The recommended LLC conform to the following specifications.
• JIS K-2234
ambient temperature. LLC concentration should be 30% as a minimum and
60% as a maximum.
• DO NOT mix the different types of
brand of LLC, otherwise harmful
sludge may yield.
• DO NOT use hard water.
• Water should be free from sludge and/
or particles.
• SAE J814C, J1941, J1034, J2036
• ASTM D3306
• ASTM D4985
When handling LLC, use protective
gloves to avoid skin contact.
Consult your Yanmar dealer or distributor on
the use of coolant/antifreeze, and detergents.
Examples of LLC which provide good performance are:
In case it comes in contact with your
skin or eyes, wash it out with clean water.
• TEXACO LONG LIFE COOLANT ANTIFREEZE, both standard and pre-mixed.
EN
Product code 79947 and 7998.
• HAVOLINE EXTENDED LIFE
ANTIFREEZE/COOLANT.
Product code 7994
NOTICE
• Always be sure to add LLC to soft water. In particular, in cold season, to add
LLC is important.
Without LLC,
Cooling performance will decrease due
to scale and rust in the cooling water
system.
This causes serious damage in the
cooling system.
• Be sure to use the proper amount of
coolant concentrate specified by the
LLC manufacturer depending on the
24
CAUTION
3.1.3.1 Handling of Coolant
(1) Choose LLC, which will not have
any adverse effects on the materials (cast iron, aluminium, copper,
etc.) of the engine's fresh water
cooling system.
(2) Replace the cooling water periodically, according to the maintenance
schedule given in this operation
manual.
(3) Remove the scale from the cooling
water system periodically, according to the instructions in 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 antifreeze maker for your temperature range.
3. OPERATION
3.2 Before Initial Operation
NOTICE
Perform the following before using the engine for the first time:
Do not overfill.
3.2.1 Supply Fuel Oil
Overfilling will cause oil to be sprayed
into the cylinder and lead to engine
problems.
DANGER Using gasoline, etc. may
A
B
cause a fire.
To avoid mistakes, be
sure to double-check the
kind of fuel before filling.
Wipe off any spilled fuel
carefully.
(1) Before filling with fuel, wash out the
fuel tank and fuel system with clean
kerosene or light oil.
(2) Fill the tank with clean fuel oil, free
of dirt and water.
3.2.2 Supply Engine Lubricating Oil
(1) Remove the filler port cap (yellow)
at the top of the rocker arm cover,
and fill with engine oil.
(2) Fill with oil to the upper limit on the
dipstick. Insert the dipstick fully to
check the level.
(3) Tighten the filler port cap securely
by hand.
Engine Oil Capacity
C
D
E
A Filler port
B Rocker arm cover
C Dipstick
3.2.3 Supply Marine Gear Lubricating Oil
(1) Remove the filler port cap at the top
of the housing, and fill with marine
gear lubricating oil.
(2) Fill with oil to the upper limit on the
dipstick, insert the dipstick fully to
check the level.
(3) Tighten the filler port cap securely
by hand.
Marine gear oil capacity
KM2P-1
3YM30 with KM2P-1
Full: 2.8 L (3.0 quarts)
3YM30 with SD20
Full: 2.5 L (2.6 quarts)
3YM20 with KM2P-1
Full: 2.7 L (2.9 quarts)
3YM20 with SD20
Full: 2.4 L (2.5 quarts)
2YM15 with KM2P-1
Full: 2.0 L (2.1 quarts)
2YM15 with SD20
Full: 1.8 L (1.9 quarts)
D Upper limit
E Lower limit
Full 0.30 L (0.64 pints)
25
EN
3. OPERATION
A
A
B
A Oil filler cap
B Dipstick
B
C
3.2.4 Supply Cooling Water
Supply cooling water according to the following procedures. Be sure to add antifreeze to the cooling water.
EN
A Coolant tank
C Drain cock for seawater
B Drain plug for coolant
(1) Be sure to close the 4 water drain
cocks/plugs.
Fresh water line
Seawater line
2
2
A
Note: The water drain cocks are opened before shipping from the plant.
A
C
B
A Stop solenoid
C Flywheel housing
B Drain cock for fresh water
(2) Remove the filler cap of the fresh
water cooler by turning the cap
counterclockwise 1/3 of a turn.
D
A
E
C
B
A Coolant tank
D Fresh water pump
B Drain plug for coolant E Seawater pump
C Drain plug for seawater
C
B
D
A Filler cap
B Fresh water cooler
26
C Tabs
D Notches
3. OPERATION
(3) Pour cooling water slowly into the
fresh water/coolant tank so that air
bubbles do not develop. Pour until
the water overflows from the filler
port.
D
A
B
C
DANGER If the filler cap is loose, hot
steam and water will spout
out which may cause
burns.
A To fresh water cooler
B Upper limit
C Lower limit
D Cap
3.2.5 Cranking
(4) After supplying cooling water, replace the filler cap and tighten it
firmly. Failure to do so will cause
water leakage. To replace the cap,
align the tabs on the bottom of the
cap with the notches on the filler
port and turn clockwise 1/3 of a
turn.
(5) Remove the coolant recovery tank
cap and fill with coolant mix to the
lower limit.
Replace the cap.
Coolant recovery tank capacity:
0.8 L(1.7 pints)
(6) Check the rubber hose connecting
the coolant recovery tank to the
fresh water cooler. Be sure the
hose is securely connected and
there is no looseness or damage.
When the hose is not watertight, an
excessive amount of cooling water will
be used.
When the engine has not been used for a
long period of time, lubricating oil will not
be distributed to all of the operating parts.
Using the engine in this condition will lead
to seizure.
After a long period of disuse, distribute lubricating oil to each part by cranking. Perform in accordance with the following
procedures before beginning operation.
(1) Open seacock.
(2) Open fuel cock.
(3) Put remote control lever in NEUTRAL
B
A
A Forward
B Neutral
C
C Reverse
(4) Turn on the battery switch and insert the key into key switch. Turn
the key to the ON position.
(5) Electric stop device
Push the stop button on the instrument panel continuously while cranking.
27
EN
3. OPERATION
(6) When the key switch is turned, the
engine will begin cranking. Continue cranking for about 5 seconds,
and check for abnormal noise during that time. (If you remove your
hand from the stop knob or stop
button while cranking, the engine
will start.)
3.2.6 Check and Re-supply Lubricating Oil and Cooling Water
EN
When engine oil, clutch oil, or cooling water is supplied for the first time or when
they must be replaced, conduct a trial operation of the engine for about 5 minutes
and check the quantity of lubricating oil
and cooling water. The trial engine operation will send the lubricating oil and cooling
water to the passages, so the lubricating
oil and cooling water levels will drop.
Check and re-supply as necessary.
(1) Supplying engine lubricating oil
(See 3.2.2). Approximately 10 minutes after stopping the engine, remove the oil dipstick and check the
oil level. Add oil if the level is too
low.
(2) Supplying marine gear lubricating
oil (See 3.2.3).
(3) Supplying cooling water (See
3.2.4).
DANGER
28
Never open the cap of the
coolant tank while the engine is still hot. Steam
and hot water will spurt
out and burn you seriously. Wait until the temperature of the coolant tank
has dropped, wrap a
cloth around the filler cap
and loosen the cap slowly. After inspection, refasten the cap firmly.
3.3 Operating your engine
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 drive shaft, V-belt,
propeller shaft, etc. catches 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 exhaust manifold and the exhaust pipe. Avoid burns! Never touch
or allow your clothes to touch any part
of the engine.
3.3.1 Daily Start Up Inspection
Before starting the engine, make it a daily
rule to conduct the following inspections:
(1) Visual Checks
Check for the following:
1. Lubricating 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 problem is found, do not operate
the engine before completing repairs.
3. OPERATION
(2) Checking and Re-supplying Fuel
Oil
Check the fuel level inside the fuel
tank and supply with the recommended fuel, if necessary. (See 3.2.1)
(3) Checking and Re-supplying Engine
Lubricating Oil.
1. After removing the oil filler cap, check
the engine oil level with the oil dipstick.
2. If the oil level is low, supply with the
recommended lubricating oil using the
filler port. Supply oil up to the top mark
on the oil dipstick. (See 3.2.2)
(4) Check and Re-supply Marine Gear
Lubricating Oil
1. Check the marine gear oil level with
the oil dipstick.
2. If the oil level is low, supply with the
recommended lubricating oil using the
filler port. Fill oil up to the top mark on
the oil dipstick. (See 3.2.3)
(5) Check and Re-supply Fresh Water
(For Fresh Water Cooling System)
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.
Check and supply cooling water routinely at the coolant recovery tank
only.
Do not remove the filler cap of the
coolant tank during usual operation.
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, replace the cap and
tighten firmly.
1. Check that the coolant level is above
the lower limit on the side of the coolant recovery tank.
2. If the coolant level is close to the lower
limit, remove the filler cap and supply
fresh coolant.
3. When the water in the coolant recovery tank runs out, remove the filler cap
of the fresh water cooler and supply
water until it overflows from the filler
port. (See 3.2.4)
NOTICE
EN
If the coolant runs out too often, or
only the coolant in the fresh water
tank drops without any change in
the water level of the coolant recovery tank, there may be some leakage of water or air. In such cases,
consult your Yanmar dealer or distributor without delay.
Note: The water rises in the coolant recovery tank during engine operation. This is not
abnormal. After stopping the engine, the
cooling water cools down and the extra water in the coolant recovery tank returns to
the coolant tank.
(6) Check the Remote Control Handle
Be sure to check that the remote control handle lever moves smoothly before use. If it is hard to operate,
lubricate the joints of the remote control cable and also the lever bearings.
If the lever comes out or there is play
in the lever, adjust the remote control
cable. (See 4.3.1 (5))
29
3. OPERATION
(7) Check the Alarm Devices Electric
Operation
When operating the key switch, check
that the alarm devices work normally.
(See 2.5.1 (4))
(8) Prepare Fuel, Lubricating Oil, and
Cooling Fresh Water in Reserve
Always store lubricating oil and coolant water in reserve (for at least one
refill) onboard, to be ready for emergencies.
3.3.2 How to Start the Engine
(1) Start the engine according to the
following procedures:
Electric Operation
1. Open the seacock.
EN
2. Open the fuel cock.
3. Set the remote control lever in NEUTRAL.
NOTICE
Safety equipment should make it
impossible to start the engine in
any other position than NEUTRAL
A
6. Turn the key switch to start the engine.
Release the key switch when the engine has started. The alarm buzzer
should stop and the alarm lamps go
out.
A
D
GLOW
B
OFF ON
C
START
A OFF position
B ON position
C START position
D GLOW position
(2) Starting at low ambient temperature
If the engine is hard to start in cold
weather (approx. 0°C or below), use
the glow plug for easier starting.
Follow steps 1 to 5 of the above procedure, and then follow the steps below.
Turn the key from the OFF to the
GLOW and stay there for approx. 4 to
5 seconds until the glow plug is heated
up.
Turn the key to the START position.
After the engine starts, release the
key.
NOTICE
A NEUTRAL
4. Turn on the battery switch.
5. Insert the key into the key switch and
turn the key to ON. If the alarm buzzer
sounds and alarm lamps come on, the
alarm devices are normal.
Note: The coolant high temperature alarm
lamp does not come on. (See 2.5.1.(4))
30
Limit the activation of the glow plug
within 10 seconds to one attempt.
Lengthy operation damages the
plug.
(3) Re-starting After Starting Failure
Before turning the key switch 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.
3. OPERATION
NOTICE
Turn the key for a maximum of 15
seconds in the start position. If the
engine does not start the first time,
wait for about 15 seconds before
trying again. After the engine has
started, do not turn the key off. (It
should remain ON.)
Alarm devices will not work when
the key is OFF.
CAUTION
If vessel is equipped with a water
lift (water lock) muffler, excessive
cranking could cause seawater to
enter the cylinders and damage the
engine.
(4) Air Venting of the Fuel System After
Starting Failure
If the engine only idles or won't start
after several attempts, there may be
air in the fuel system. If air is in the fuel
system, fuel cannot reach the fuel injection pump. Vent the air in the system according to the following
procedures.
Fuel System Air Venting Procedures
1. Check the fuel level in the fuel tank.
Replenish if insufficient.
2. Loosen the air vent bolt at the top of
the fuel/water separator by turning it 2
or 3 times. When fuel, which does not
contain air bubbles comes out of the
bolt hole, tighten the air vent bolt.
3. Loosen the air vent bolt of the fuel filter
by turning it 2 or 3 turns.
4. Feed fuel with the fuel feed pump by
moving the lever on the left side of the
feed pump up and down.
5. Allow the fuel containing air bubbles to
flow out from the air vent bolt holes.
When the fuel coming out no longer
contains bubbles, tighten the air vent
bolt. This completes the air venting of
the fuel system. Try starting the engine again.
6. In subsequent engine operation after
the start-up, the automatic air-venting
device works to purge the air in the
fuel system. No manual air-venting is
required for normal engine operation.
(5) 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 instrument panel are normal.
2. Check for water or oil leakage from the
engine.
3. Check that exhaust color, engine vibrations and sound are normal.
4. When there are no problems, keep the
engine at low speed with the boat still
stopped to send lubricating oil to all
parts of the engine.
5. Check that sufficient cooling water is
discharged from the seawater outlet
pipe. Operation with inadequate 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.
• Is the seacock open?
• Is the inlet strainer on the hull bottom
clogged?
• Is the seawater suction hose broken,
or does the hose suck in air due to a
loose joint?
31
EN
3. OPERATION
NOTICE
The engine will seize if it is operated when cooling seawater discharge is too small or if load is
applied without any warming up operation.
3.3.3 Operation
(1) Engine acceleration and deceleration
Use the throttle handle to control acceleration and deceleration. Move the
handle slowly.
(2) FORWARD- NEUTRAL (boat
stopped) - REVERSE Clutch
A
EN
Move the throttle handle slowly to a
higher speed position after completing
clutch engagement.
2. When changing between FORWARD
and REVERSE, bring the clutch to
NEUTRAL and pause before slowly
shifting to the desired position. Do not
shift abruptly from FORWARD to REVERSE or vice versa.
3. Move the clutch handle accurately and
fully into the FORWARD, NEUTRAL,
and REVERSE positions.
3.3.4 Cautions During Operation
Always be on the lookout for problems during engine operation.
Pay particular attention to the following:
(1) Is sufficient water being discharged
from the seawater outlet pipe?
If the discharge is small, stop the engine immediately; identify the cause
and repair.
A NEUTRAL
Use the clutch handle to change from
FORWARD to NEUTRAL (boat
stopped) to REVERSE.
NOTICE
Shifting the marine gear while operating at high speed or not pushing
the handle fully into position (partial engagement) will result in damage to the marine gear parts and
abnormal wear.
1. Before using the marine gear, be sure
to move the throttle handle to a low
idle position (less than 1000 rpm).
32
(2) Is the exhaust color normal?
The continuous emission of black exhaust smoke indicates engine overloading. This shortens the engine's life
and should be avoided.
(3) Are there abnormal vibrations or
noise?
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, lower the engine speed immediately, check the warning lamps, and
stop the engine for repairs.
3. OPERATION
(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 fuel oil in the fuel
oil 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.
Note: Racing the Engine
With the clutch in NEUTRAL, accelerate from
the low speed position to the high speed position and repeat this process about 5 times.
This is done to clean out carbon from the
cylinders and the fuel injection valve. Neglecting to race the engine will result in poor
exhaust color and reduce engine performance.
(8) If possible, periodically operate the
engine at near maximum rpm.,
while underway. This will generate
higher exhaust temperatures,
which will help clean out hard carbon deposits, maintaining engine
performance and prolonging the
life of the engine.
(3) Cool down the engine at low speed
(approximately 1000 rpm) for about
5 minutes.
NOTICE
Always remember to allow engine
to idle below 1000 rpm for five minutes prior to shut-down to remove
heat from major components.
Shutting down the engine suddenly
while operating at high speed will
cause the engine temperature to
rise quickly, causing deterioration
of the oil and sticking of parts.
Electric stop device
Push the stop button on the instrument panel when the key is in the ON
position.
Engine shut-down by stop button
A
NOTICE
Electric Operation
Never turn off the battery switch
during operation. Damage to parts
in the electric system will result.
3.3.5 Engine shut-down
Stop the engine in accordance with the following procedures:
(1) Put the remote control handle in
NEUTRAL
A Stop button on the instrument panel
(4) Close the fuel cock.
(5) Close the sea cock.
NOTICE
Neglecting to close the seacock
could allow water to leak into the
boat and may cause it to sink. Be
sure to close the seacock.
(2) Be sure to race the engine before
shut-down. (See 3.3.4 (7))
33
EN
3. OPERATION
Emergency Stop
When you can’t stop the engine by the stop
button on the panel, push the button at the
back of the stop solenoid.(See 2.5.3)
3.4 Long Term Storage
(1) In cold temperatures or before long
term storage, be sure to drain the
seawater from the seawater cooling
system.
CAUTION
2. Loosen the 4 bolts attaching the side
cover of the seawater pump, remove
the cover and drain the water from inside.
Retighten the bolts when finished.
3. Close the drain cocks/plugs.
Drain seawater from the seawater
cooling system after the engine has
cooled down. Be careful to avoid
burns.
EN
1. Loosen the drain cocks/plugs attached on the pipe and on the heat exchanger, and drain off the seawater
inside.
If no liquid comes from the drain
cocks/plugs, it may be necessary to
use a stiff wire to remove any debris to
allow drainage.
NOTICE
If seawater is left inside, it may
freeze and damage parts of the
cooling system (fresh water cooler,
seawater pump, etc.) when ambient
temperature is below 0°C[32°F].
B
A
(2) Do not drain fresh water/coolant in
the cold season or before the long
storage.
If LLC (Long Life Coolant) has not
been added to the cooling fresh water,
be sure to add LLC or drain off the
fresh water from the fresh water cooling system daily after use
NOTICE
If the fresh water without LLC is not
removed, it may freeze and damage
parts of the cooling water system
(fresh water cooler, cylinder block,
cylinder head, etc.) when ambient
temperature is below 0°C[32°F].
1. Open the fresh water drain cocks/
plugs (2 positions as illustrated) and
drain the fresh water from inside.
2. Close the drain cocks/plugs after
draining the fresh water.
C
D
A Alternator
B Coolant tank
34
C Drain plug for coolant
D Drain cock for seawater
3. OPERATION
(5) Grease the exposed area and joints
of the remote control cable and the
bearings of the remote control handle.
A
D
(6) Cover the intake silencer, exhaust
pipe, etc. with vinyl sheets and seal
them to prevent moisture from entering.
E
C
B
A Coolant tank
D Fresh water pump
B Drain plug for seawater E Seawater pump
C Drain plug for fresh water
(7) Drain bilge in the hull bottom completely.
Water may leak into the boat when it is
moored, and whenever possible it
should be hauled out, covered and
blocked.
(8) Waterproof 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.
A
C
B
A Stop solenoid
C Flywheel housing
B Drain cock for fresh water
(3) Carry out the following periodic inspection before placing the engine
in storage. Clean the outside of the
engine wiping off any dust or oil.
(4) To prevent condensation inside the
fuel tank, either drain off the fuel or
fill the tank.
(10)When storing an engine for long
time, run the engine periodically according to the following procedure
because the rust occurrence inside
the engine, the rack agglutination
of the fuel pump, and so on are likely to occur (In case that the engine
is equipped with a boat).
1. Replace the lube oil and the filter with
new ones before the engine running.
2. If the fuel in the tank was removed,
re-supply and bleed the fuel system.
3. Confirm that there is the coolant in the
engine.
4. Operate the engine at the low idling
speed for about five minutes. (If it can
be done, once a month)
35
EN
4. MAINTENANCE AND INSPECTION
4. MAINTENANCE AND INSPECTION
4.1 General Inspection Rules
(1) Conduct Periodic Inspection for
Your Safety.
The functions of engine components
will degenerate and engine performance will drop according to the use
of the engine. If countermeasures are
not taken, you may encounter unexpected troubles while cruising at sea.
Consumption of fuel or lubricating 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 at sea.
EN (2) Inspect Before Starting.
Make it a daily rule to inspect before
starting. (See 3.3.1)
(3) Periodic Inspections at Fixed Intervals
Periodic inspections must be made after every 50, 100, 150, 250 and 1000
hours of use.
Conduct periodic inspections according to the procedures described in this
Operation Manual.
(4) Use Genuine Yanmar Parts.
Be sure to use genuine Yanmar parts
for consumable and replacement
parts. Use of other parts will reduce
engine performance and shorten the
life of the engine.
36
(5) Consult Your YANMAR Dealer or
Distributor.
Specialized technicians are ready to
assist you with periodic inspections
and maintenance. Consult your YANMAR dealer or distributor in accordance with the service agreement.
(6) Servicing Tools
Prepare servicing tools onboard to be
ready for inspecting and servicing the
engine and other equipment.
(7) Tightening Torque of Bolts & Nuts
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.
Bolts and nuts 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 standard tightening torque for
standard bolts & nuts is listed below.
4. MAINTENANCE AND INSPECTION
NOTICE
Apply the following tightening torque
to bolts having "7" on the head. (JIS
strength classification: 7T) Tighten
Bolt dia. x pitch
(mm)
Tightening
torque
M6x1.0
bolts with no "7" mark to 60% tightening torque. If the parts to be tightened
are made from light alloy aluminium,
tighten the bolts to 80% tightening
torque.
M8x1.25
M10x1.5
M12x1.75
M14x1.5
M16x1.5
(Nm)
11 ± 1
26 ± 3
50 ± 5
90 ± 10
140 ± 10
230 ± 10
(kgf-m)
1.1 ± 0.1
2.7 ± 0.3
5.1 ± 0.5
9.2 ± 1
14.3 ± 1
23.5 ± 1
(lb-ft)
8.0 ± 0.7
19 ± 2.1
37 ± 3.6
66 ± 7.2
103 ± 7.2
170 ± 7.2
4.2 List of Periodic Inspection
Items
Daily and periodic inspections 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 lubricating oils used and handling conditions, and are hard to establish
definitively. The following should be treated as a general standard only.
NOTICE
Schedule your own periodic inspection
plan according to the operational conditions of your engine and inspect every item. Neglect of periodic
inspections may lead to engine troubles and shorten the life of the engine.
Inspection and servicing at 1000 hours
and thereafter require special knowledge and techniques. Consult your
Yanmar dealer or distributor.
Section 4.3 gives a detailed explanation of
which parts must be inspected and the
procedure for doing so for each interval.
37
EN
4. MAINTENANCE AND INSPECTION
|: check : Replace z: Consult local dealer
System
Before starting
Item
Check the fuel level, and refill
Every 50 Every 100 Every 150 Every 250 Every 1000
hrs or six hrs or one hrs or one
hrs or 4
hrs or
year [1]
years [1]
monthly[1] months [1] year [1]
|
Drain the fuel tank
Fuel system
Initial
50 hrs
|
Drain the fuel/water separator
|
|
Replace the fuel filter

Check the injection timing
z
z[2]
Check the injection spray condition
Check the lubricating oil level
Lubricating system
Replace the
lubricating oil
Crankcase
|
Marine gear
|
Crankcase

Marine gear

Seawater outlet
Check cooling water level
Cooling
system

Sail drive


| During
Operation
|
Check the impeller of the cooling
water pump (seawater pump)
Replace the fresh water coolant


Replace the engine lubricating oil
filter
EN

|
Every year
When long life coolant is used of a specified type (see page 24), a
replacement period of two years can be obtained.
Clean & check the water passages
Air intake
and
exhaust
system
z
Clean the element of the air intake
silencer
|
Clean the exhaust/water mixing
elbow
|
Clean the breather pipe
Check the exhaust gas condition
|
| During
Operation
Diaphragm assembly inspection
Check the alarm lamps & devices
Electrical
system
z
|
Check the electrolyte level in the
battery
|
Adjust the tension of the alternator
driving belt
|
Check the wiring connectors
Check for leakage of water and oil
Check/adjust the remote control operation
Adjust the propeller shaft alignment
[1] Whichever comes first.
[2] For EPA requirements see also 4.4
38
|

|
| After
starting
Cylinder
Retighten all major nuts and bolts
head, etc.
Adjust intake/exhaust valve clearance
Remote
control
system,
etc.

z
|
|
z
|
z
|
First
z
4. MAINTENANCE AND INSPECTION
4.3 Periodic Inspection Items
4.3.1 Inspection on Initial 50 Hrs. of
Operation (or after 1 Month)
(1) Replace the Engine Lubricating Oil
and Lubricating Oil Filter (1st time)
During initial operation of the engine,
the oil is quickly contaminated due to
the initial wear of internal parts. The lubricating oil must therefore be replaced early. Replace the lubricating
oil filter at the same time.
It is easiest and most effective to drain
the engine lubricating oil after operation while the engine is still warm.
1. Remove the lubricating oil dipstick. Attach the oil drain pump and pump out
the oil.
For easier draining, remove the oil filler cap (yellow) at the top of the rocker
arm cover or gear case cover.
2. Remove the lubricating oil filter with
the filter detach/attach tool (Turn
counterclockwise.)
3. Clean the filter installation face and attach the new filter, tightening by hand
until the seal touches.
4. Turn an additional 3/4 of a turn with
the attachment tool. (Turn clockwise.
Tightening torque: 20 - 24 Nm
(177-212 lb-in))
5. Fill with new lubricating oil. (See 3.2.2)
6. Perform a trial run and check for oil
leaks.
7. Approximately 10 minutes after stopping the engine, remove the oil dipstick and check the oil level. Add oil if
the level is too low.
CAUTION
Beware of oil splashes if extracting
the lubricating oil while it is hot.
(2) Replace the Marine Gear Lubricating Oil (1st time)
During initial operation, the oil is quickly contaminated due to the initial wear
of internal parts. The lubricating oil
must therefore be replaced early.
1. Remove the cap from the filler port
and attach the oil drain pump. Drain off
oil.
2. Fill with new lubricating oil. (See 3.2.3)
3. Perform a trial run and check for oil
leakage.
(3) Replace the Sail Drive Oil (1st time)
Refer to the operation manual of the
sail drive for the procedure of the oil
replacement.
(4) Draining the (optional) Fuel Tank
Put a pan under the drain to catch the
fuel.
Open the drain cock and drain off any
water or dirt collected.
Once the water and dirt has been
drained off and the fuel coming out is
clear, close the drain cock.
(5) Inspection and Adjustment of Intake/ Exhaust Valve Head Clearance (1st time)
Settling of a new engine and individual
engine use will cause changes in the
intake/exhaust valve and rocker arm
clearance, and adjustment is necessary. This adjustment requires specialized knowledge and techniques.
Consult your Yanmar dealer or distributor.
39
EN
4. MAINTENANCE AND INSPECTION
EN
(6) Adjusting the Remote Control Cable
The various control levers on the engine side are connected to the remote
control lever by remote control cables.
The cables will become stretched and
the attachments loose after long hours
of use causing deviation. It is dangerous to control operation under these
conditions, and the remote control cables must be checked and adjusted
periodically.
1. Adjusting the Throttle Remote Control
Cable
Check to see that the control lever on
the engine side moves to the high
speed stop position and low speed
stop position when the remote control
lever is moved to H (high speed) and
L (low speed) respectively.
When there is deviation, loosen the
bracket for the remote control cable on
the engine side and adjust.
Adjust the high-speed stop position
first and then adjust the low speed
idling by the adjustment bolt on the remote control lever.
D
B
A
E
F
C
A Cable
B Fuel injection pump
C Adjustment
D High speed stop bolt
E Low speed stop bolt
F Control lever
2. Adjusting the Clutch Remote Control
Cable
Check to see that the control lever
moves to the correct position when the
remote control handle is put in NEUTRAL, FORWARD, REVERSE.
Use the NEUTRAL position as the
standard for adjustment. When there
is deviation, loosen the bracket for the
remote control cable on the clutch side
and adjust.
B
CAUTION
Never adjust the high-speed stop
bolt. This will render your warranty
void.
A
C
A Marine gear
B Cable
40
C Adjustment
4. MAINTENANCE AND INSPECTION
(7) Adjusting the Tension of Alternator
Driving Belt
When there is not enough tension in
the V-belt, it will slip and the fresh water pump will fail to supply cooling water. Engine over-heating and seizure
will result.
A
4.3.2 Inspection Every 50 Hrs. (or
Monthly)
(1) Drain the fuel/water separator.
1. Close the fuel cock of a fuel tank.
2. Loosen the retaining ring and remove
the filter cup. Drain off any water and
dirt collected inside.
3. After reassembly, be sure to vent air
from the fuel system.
If air is in the fuel system, fuel cannot
reach the fuel injection pump.
Vent the air in the system according to
the following procedures.
A
EN
B
C
A Push
When there is too much tension in the
V-belt, the belt will become damaged
more quickly and the bearing of the
fresh water pump may be damaged.
1. Check the tension of the V-belt by
pressing down on the middle of the
belt with your finger (approx.
98N(10kgf)). With proper tension, the
V-belt should deflect 8-10 mm
(0.315-0.393 inches).
D
E
2. 2.If the V-belt deflection is out of the
limit, adjust the V-belt tension. Loosen
the set bolt and move the alternator to
adjust the V-belt tension.
3. Be careful not to get any oil on the Vbelt. Oil on the belt causes slipping
and stretching. Replace the belt if it is
marred.
F
A Air bleeding bolt
B Bracket
C O-ring
(Fuel filter)
D Filter element
E Filter cap
F Retaining ring
Fuel system air bleeding procedures
41
4. MAINTENANCE AND INSPECTION
1. Check the fuel level in the fuel tank.
Replenish if Insufficient
2. Loosen the air bleeding bolt at the top
of the fuel filter by turning it 2 or 3
times.
3. Feed fuel with the fuel feed pump by
moving the lever on the left side of the
feed pump up and down.
4. Allow the fuel containing air bubbles to
flow out from the air bleeding bolt hole.
When the fuel no longer contains bubbles, tighten the air bleeding bolt. This
completes the air bleeding of the fuel
system.
5. After the engine start-up, the automatic air-bleeding device works to purge
the air in the fuel system. No manual
air-venting is required for normal engine operation.
EN
A
2. 2.Loosen the drain plug and drain off
any water and dirt collected inside.
Note: If no drain drips when the drain plug is
opened, loosen the air bleeding plug on the
top of the fuel/water separator by turning
counter-clockwise 2-3 times. (This may occur if the position of the fuel/water separator
position is higher than the fuel oil level in the
fuel tank).
3. After draining, be sure to tighten the
air bleeding plug.
4. Be sure to bleed air in the fuel system.
(3) Check the Electrolyte Level in a
Battery
WARNING
Before inspecting the electrical
system, be sure either to turn off
the battery switch or to disconnect
the (-) terminal of the ground cable.
Otherwise, a short-circuit could
cause a fire.
Ensure good ventilation when
charging the battery. The use of
open flames is strictly prohibited.
Hydrogen gas may also catch fire.
B
C
D
E
F
G
A
B
C
D
Cylinder head
Bracket
Fuel pipe
Fuel filter
E Fuel injection pump
F Clamp
G Fuel pipe
(2) Drain the fuel/water separator (optional).
1. Close the fuel cock of the fuel tank.
42
Battery fluid is dilute sulphuric acid. It can blind you or burn your
eyes or skin. Wear goggles and
gloves when handling battery fluid.
Should the fluid be deposited on
your skin, wash with a large quantity of fresh water and seek treatment
from a doctor.
1. If operation continues with insufficient
battery fluid, the battery will be destroyed.
Check the fluid level periodically. If the
level is lower than specified, fill with
distilled water (available in the market)
up to the upper limit of the battery.
4. MAINTENANCE AND INSPECTION
(Battery fluid tends to evaporate in
high temperatures, especially in summer. In such cases, inspect the battery
earlier than specified.)
4.3.3 Inspection Every 100 Hrs (or
six months).
GREASE
B
UPPER LEVEL
LOWER LEVEL
D
may be insufficient. In such cases,
consult your Yanmar dealer or distributor.
(1) Replace the Sail Drive Oil
Refer to the operation manual of the
sail drive for the procedure of the oil
replacement
C
F
E
4.3.4 Inspection Every 150 Hrs (or
one year).
(1) Replace the Engine Oil
Refer to 4.3.1(1).
A
A Electrolyte level
B Upper limit
C Lower limit
D OK
E Too low
F Excessive
2. If the starter rpm is too low and the engine cannot be started, measure the
specific gravity of the battery with a hydrometer.
When the specific gravity of the fluid is
over 1.27(at 20°C)[68°F]), it is fully
charged.
Fluid with a specific gravity of below
1.24 needs charging. If the specific
gravity cannot be raised by charging,
the battery must be replaced.
NOTICE
The capacities of the standard alternator and the recommended battery assume only the power
necessary for regular operation.
If the power is also used for inboard
lighting or other purposes, the generating and charging capacities
(2) Replace the Marine Gear oil
Refer to 4.3.1(2).
EN
4.3.5 Inspection Every 250 Hrs (or
one year).
(1) Replace the Fuel Tank
Refer to 4.3.1(4).
(2) Replace the Fuel Filter
When there is dirt in the fuel, the filter
becomes clogged, and the fuel will not
flow easily. Check and replace the element.
1. Close the fuel cock.
2. Remove the filter case by loosening
the retainer ring (Turn counterclockwise) with the filter wrench.
3. Pull the element out from the bottom,
and replace with a new one.
4. Clean the inside of the case thoroughly, put on the O-ring, and close with
the retainer ring. (Turn clockwise:
Tightening torque:12 Nm (106 lb-in)
5. Air will enter into the fuel system when
the filter is disassembled, and should
be vented. (See 3.3.2(4))
43
4. MAINTENANCE AND INSPECTION
of seawater discharged is reduced, inspect the seawater pump in accordance with the following procedures:
1. Loosen the side cover bolts and remove the side cover.
2. Illuminate the inside of the seawater
pump with a flashlight and inspect.
A
A
Fuel filter
(3) Replace the Lubricating Oil Filter
(See 4.3.1 (1))
(4) Adjusting the Tension of the Alternator Driving Belt (See 4.3.1 (7)).
EN
(5) Clean the Intake Silencer
Disassemble the intake silencer and
clean the inside thoroughly. Remove
the silencer by taking off the clamp.
Clean the element with a neutral detergent. Reassemble after it is completely dry.
A
3. If any of the following problems are
found, disassembly and maintenance
are necessary:
1. Impeller blades are cracked or nicked.
Edges or surfaces of the blades are
marred or scratched.
Note: The impeller must be replaced periodically (every 1000 hrs.)
2. Wear plate is damaged.
3. If no damage is found when inspecting
the inside of the pump, re-assemble
the side cover.
Fit the O-ring to the groove of the joint
face before replacing the side cover.
If a large amount of water leaks continuously from the water drain pipe beneath the seawater pump during
operation, disassembly and maintenance (replacement of the lip seal) are
necessary.
When disassembly and maintenance
of the seawater pump are necessary,
consult your Yanmar dealer or distributor.
NOTICE
A
Element
(6) Inspect Inner Parts of the Seawater
Pump
Depending on the use, the inside parts
of the seawater pump deteriorate and
discharge performance drops. At the
specified interval or when the volume
44
The seawater pump turns in the direction as shown in the below figure, and the impeller must be
installed while considering the impeller direction.
If the impeller has been removed
for any reason and must be re-assembled, be very careful not to
make a mistake and turn it in the
wrong direction. Additionally, if the
engine is being turned manually, be
4. MAINTENANCE AND INSPECTION
careful to turn it in the correct direction. Incorrect turning will twist the
impeller and damage it
C
D
B
A
A Direction of Impeller B Impeller rotating direction
C Impeller
D Seawater pump
(7) Clean the Exhaust/Water Mixing Elbow.
There are two types of mixing elbows,
the L-type and the U-type. The mixing
elbow is attached to the exhaust manifold. The exhaust gas is mixed with
seawater in the mixing elbow.
1. Clean dirt and scale out of the air pass
and seawater pass of the mixing elbow.
2. Repair the crack or damage of the
mixing elbow by welding, or replace if
necessary.
3. Inspect the gasket and replace if necessary.
(8) Check the Wiring Connectors
Check that each electric connection
part has not become loose.
4.3.6 Inspection Every 1000 Hrs (or
4 years).
Adjustment of the valve clearance is
necessary and the adjustment requires specialized knowledge and
techniques. Consult your Yanmar
dealer or distributor.
(2) Inspect and Adjust the Fuel Injection Spray Condition.
Adjustment is necessary to obtain the
optimal fuel injection to ensure the
best possible engine performance.
This inspection requires specialized
knowledge and techniques.
Consult your Yanmar dealer or distributor.
(3) Adjusting the Remote Control Cables (See 4. 3. 1(6))
(4) Inspect and Adjust the Fuel Injection Timing
Fuel injection timing must be adjusted
to ensure optimal engine performance.
Consult your Yanmar dealer or distributor.
(5) Diaphragm assembly inspection
Inspect the diaphragm assembly on
the rocker arm cover.
1. Loosen screws, remove the diaphragm assembly, and check for oil
and contaminants between the diaphragm and the cover. If oil and contaminants enter into the diaphragm
assembly, the diaphragm will not operate as designed.
2. Inspect the diaphragm rubber and
spring for damage. If necessary, replace with new ones.
(1) Inspection and Adjustment of Intake/ Exhaust Valve Clearance.
When operating for long periods of
time, the clearance between the intake/exhaust valve and the rocker arm
will change and affect engine performance.
45
EN
4. MAINTENANCE AND INSPECTION
Breather system component
A
B
C
D
E
F
G
A
B
C
D
Diaphragm cover
Spring
Center plate
Diaphragm
H
E
F
G
H
Rocker arm cover
Breather baffle
Baffle plate
Intake manifold
NOTICE
EN
1. When the diaphragm is damaged,
crankcase pressure control is affected. Excessive crankcase pressure will
cause leaks at seals and mating part
surfaces.
2. At lubricating oil replacement or lubricating oil fill, do not fill above the standard upper limit. If the lubricating oil
quantity is above the upper limit, the
amount of crankcase oil mist may increase resulting in oil hammer.
(6) Clean & Check the Water Passages
When it is used for a long time, cleaning of the cooling water passages
such as cooling water rubber hoses
and heat exchanger is periodically
necessary. Because dirt, scale, rust,
and so on collect in the cooling water
passages and the cooling performance declines.
This maintenance requires specialized knowledge.Consult your Yanmar
dealer or distributor.
46
(7) Adjust the Propeller Shaft Alignment
The rubber tension of the flexible engine mounts is lost after many hours'
use. This leads to a drop in vibration
absorption performance, and also
causes centering misalignment of the
propeller shaft.
This maintenance requires specialized knowledge and techniques
Consult your Yanmar dealer or distributor.
Note: Be sure to replace the Yanmar flexible
engine mounts every 1000 hours or 4 years,
whichever comes first.
(8) Retighten all Major Nuts and Bolts.
After long time usage, the major nuts
and bolts of the engine may loosen.
Retighten the major nuts and bolts by
the standard tightening torques. This
inspection requires specialized knowledge and techniques. Consult your
Yanmar dealer or distributor.
(9) Check the Impeller of a Seawater
Pump
The impeller must be replaced with
new one periodically (every 1000 hrs
or 4 years whichever comes first).
(See 4.3.5(6) for the procedure.)
(10)Adjust the Tension of an Alternator
Driving Belt
Replace the alternator driving belt with
new one every 1000 hours or four
years, whichever comes first, even if
there is no crack or damage in the surface.
(See 4.3.5(7) for the procedure.)
4.3.7 Annually
(1) Replace Fresh Water Coolant
Cooling performance drops when
cooling water is contaminated with
rust and scale.
4. MAINTENANCE AND INSPECTION
Even if LLC (Long Life Coolant) or antirust is added, the cooling water must
be replaced periodically because the
properties of the agent will degenerate.
To drain the fresh water/coolant, open
the fresh water cocks/plugs (two places) as shown in 3.2.4 and 3.4(2).
(Refer to 3.2.4 for resupplying cooling
water.)
4.4 EPA Requirements
4.4.2 Conditions to Insure Compliance with Emission Standards
This product is an EPA approved engine.
The following are the conditions that must
be met in order to insure that the emission
during operation meets the EPA standards.
Be sure to follow these.
(1) The operating conditions should be
as follows:
1. Ambient temperature: -20 – 40°C
2. Relative humidity: 80% or lower
4.4.1 EPA Certification Plate
This engine has the following EPA Certification Plate attached:
) /;%#.+(140+##0&75'2#
4')7.#6+105(141((41#&%+'0)+0'5
106;2'&(7'.
#
%
$
'
&
(
4'('461190'45/#07#.(14/#+06'0#0%'52'%+(+%#6+105
#0&#&,756/'065
3. Permissible value for intake negative
pressure: 3.9 kPa (400 mmAq) or lower
4. Permissible value for exhaust back
pressure: 14.7 kPa (1500 mmAq) or
lower
(2) The fuel and lubricating oil used
should be as follows:
1. Fuel: The diesel fuel oil ISO 8217
DMX, BS 2869 A1 or A2 (Cetane No.
45 minimally.)
2. Lubricating oil: Type API, class CD
A
(3) Do not remove the seals limiting
the amount of fuel injected and the
engine speed.
(4) Be sure to carry out inspections.
Follow the basic guidelines outlined in
4.3 (Periodic Inspection Items) of this
manual and keep a record of the results. Pay particular attention to these
important points: replacing the lubricating oil, lubricating oil filter, the fuel
filter and cleaning the intake silencer
element.
A Attachment Position for Certification Plate
(attached to the top of the rocker arm cover)
Note: Inspections are divided into two sections in accordance with whom is in charge
of carrying out the inspection: (the User) and
(the Maker).
47
EN
4. MAINTENANCE AND INSPECTION
(5) Quality guarantee period for the emission related parts
If the schedule of periodic maintenance outlined in 4.4.3 (Inspection and Maintenance) is
followed, the quality guarantee period is determined by the age of the engine or the number of hours of operation as indicated below.
Power rating
Parts
Quality guarantee period
kW<19
Fuel nozzle, fuel pump
1500 hrs. of operation or 2 years
19=<kW<37
Fuel nozzle, fuel pump
3000 hrs. of operation or 5 years
4.4.3 Inspection and Maintenance
Inspection and maintenance for EPA emission related parts are shown in the chart below.
(Inspection and maintenance not noted below are the same, see 4.2 and 4.3)
EN
Parts
Interval term
Check fuel valve nozzle (clean)
1500 hours
Check & adjustment of fuel injection pressure & atomizing condition 3000 hours
Check fuel pump (adjust)
3000 hours
Note: The inspection and maintenance shown above are to be performed at your Yanmar dealer or distributor
48
5. TROUBLE AND TROUBLESHOOTING
5. TROUBLE AND TROUBLESHOOTING
Trouble
Alarm buzzer and alarm
lamps on during operation
Lubricating oil low-pressure alarm. Warning
lamp goes on
Probable Cause
Measure
NOTICE
Shift to low speed operation immediately, and check which lamp has come
on. 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.
Engine Lubricating Oil level low.
Check Lubricating Oil, Add
or replace.
3.2.3
4.3.1(1)
Lubricating oil filter clogged.
Replace.
Water in sail drive seal
alarm goes on.
Breakage of rubber seal on the
sail drive
Check and change the rubber seal.
Coolant temperature
high alarm warning lamp
goes on
Insufficient water in coolant tank.
Check coolant and replenish.
Insufficient seawater causing
temperature to rise.
Check seawater system.
Contamination inside cooling
system.
Ask for repairs.
Faulty warning devices
Reference
3.2.4
EN
NOTICE
Do not operate the engine if the alarm devices are not repaired. Serious
accidents may result if difficulties are not spotted due to faulty alarm
lamps. When the switch is turned ON: Alarm buzzer does not sound. Circuit broken or buzzer defective. Ask for repairs.
Warning lamps do not go
on
Lubricating oil low pressure.
Water in sail drive seal alarm.
No current available.
Circuit broken or lamp burnt out.
Ask for repairs.
One of the warning
lamps does not go out
Sensor switches faulty.
Ask for repairs.
Battery low charge lamp
does not go out during
operation
V-belt is loose or broken.
Replace V-belt; adjust tension.
4.3.1(6)
Battery defective.
Check fluid level, specific
gravity. Replace.
4.3.2(2)
Alternator failure.
Ask for repairs.
Note: Other warning lamps do not light up when the switch is turned on. They only light up when there
is an abnormality.
49
5. TROUBLE AND TROUBLESHOOTING
Trouble
Probable Cause
Measure
Reference
No fuel.
Replenish fuel; vent air.
3.3.2(3)
Fuel filter is clogged.
Replace element.
4.3.5(1)
Improper fuel.
Replace with recommended
fuel.
Faulty fuel injection.
Ask for repairs.
Compression leakage from
intake/exhaust valve.
Ask for repairs.
Faulty clutch position.
Shift to NEUTRAL and start.
3.3.2.3
Insufficient battery charge.
Check fluid level; recharge;
replace.
4.3.2(2)
Cable terminal contact failure.
Remove corrosion from terminal; Retighten.
Faulty safety switch device.
Ask for repairs.
Starting Failures
Starter turns, but engine
does not start
Starter does not turn or
turns slowly (Engine can
be turned manually)
EN
Faulty starter switch.
Ask for repairs.
Power lacking due to accessory drive engaged.
Consult your dealer.
Engine cannot be turned
manually
Internal parts seized; broken.
Ask for repairs.
Abnormal Exhaust Color
Black smoke
Load increased.
White smoke
50
Improper propeller matching
Contaminated intake silencer.
Clean element.
Improper fuel.
Replace with recommended
fuel.
Faulty spraying of fuel injector.
Ask for repairs.
Incorrect intake/exhaust valve
clearance.
Ask for repairs.
Improper fuel.
Ask for repairs.
Faulty spraying of fuel injector.
Ask for repairs.
Fuel injection timing off.
Ask for repairs.
Lubricating oil burns; excessive consumption.
Ask for repairs.
4.3.5(4)
3.1.1
5. TROUBLE AND TROUBLESHOOTING
Consulting Your Yanmar Dealer or Distributor
Refer difficult problems and repairs to your Yanmar dealer or distributor.
At the time of trouble, check and report the following:
(1) Engine model and number:
(2) Boat name, material of hull, size (tons):
(3) Use, type of boating done, no. of hours run:
(4) Total number of operation hours (refer to hour meter), age of boat:
(5) Condition before trouble (engine rpm, type of operation, load condition, etc.):
(6) Details of trouble:
(Exhaust color; sound of engine; does engine start; can engine be turned manually;
type of fuel used; brand and viscosity of lubricating oil; etc.)
(7) Past problems and repairs: This should be a one-page report with the heading
SERVICE HISTORY
Date - Engine Hours - Service completed
WARRANTY SERVICE
Owner Satisfaction
Your satisfaction and goodwill are important to us and to your dealer.
Normally any problems concerning 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.
Complaints can often quickly be resolved
at this 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 local Yanmar Subsidiary Company. (See the back of this manual for
addresses)
We will need the following information in
order to assist you:
• Your name, address and telephone
number
• Product model and serial number
• Purchase date
• Dealer's name and address
• Nature of the problem
After reviewing all the facts involved, you
will be advised of what action can be undertaken. Please remember that your
problem will most likely be resolved at the
dealership, using the dealer's facilities,
equipment and personnel. It is therefore
very important that your initial contact be
with the dealer.
51
EN
6. PIPING DIAGRAMS
6. PIPING DIAGRAMS
See Appendix A. at the back of this manual.
Notation
1
Overflow
RH
Rubber hose
2
Fuel oil inlet
SGP STS
Steel Pipe
3
Fuel feed pump
4
Fuel injection pump
5
Lubricating oil filter (cartridge type)
6
Fuel high pressure lines
7
Fuel injection nozzle
8
Oil pressure switch
10
Mixing elbow
11
Coolant tank/Heat exchanger
Screw joint (Union)
Flange Joint
Eye Joint
Insertion Joint
Drilled hole
EN
52
12
Lubricating oil inlet filter
Cooling fresh water piping
13
Main bearing
Cooling seawater piping
14
Seawater inlet
Lubricating oil piping
15
Cooling water pump (seawater)
Fuel oil piping
16
Hot water connection outlet (to heater)
17
Thermostat
18
Cooling water pump (fresh water)
19
Hot water connection inlet (from heater)
20
Fresh water temperature switch
21
Lubricating oil pump
22
Pressure control valve
23
Fuel oil filter (cartridge type)
24
From cylinder head
25
To cam shaft
50
Detail of part A
51
Detail of part B
52
Detail of part C
53
Detail of part D
7. WIRING DIAGRAMS
7. WIRING DIAGRAMS
See Appendix B. at the back of this manual.
Color coding
1
Starter switch
R
Red
2
Stop switch
B
Black
3
Tachometer hour meter
W
White
4
Buzzer
L
Blue
5
Lubricating oil low pressure alarm
RB
Red/Black
6
Coolant high temperature alarm
LB
Blue/Black
7
Water in sail drive seal alarm
YW
Yellow/White
8
Battery low charge alarm
YB
Yellow/Black
9
Relay (for 2 station: Option)
YG
Yellow/Green
10
Fuse (3A)
WL
White/Blue
21
Glow plug
WB
White/Black
22
Engine stop solenoid
WG
White/Green
23
Stop relay
GR
Green/Red
24
Starter relay
O
Orange
25
Starter
WBr
White/Brown
26
Coolant high temperature switch
27
Lubricating oil low pressure switch
29
Alternator
30
Water in sail drive seal sensor (on sail drive)
31
Water in sail drive seal sensor amplifier (Sail
drive only)
33
Battery
34
Procured by customer
35
Battery switch
36
Earth bolt
37
Key switch
38
Only for sail drive
39
Wire harness. Option.
40
Instrument panel
41
Diodes
42
Alarm lamps
EN
53
•
•
•
•
•
MANUFACTURER’S DECLARATION FOR MACHINERY PARTS ACCORDING TO 94/25/EEC(ANNEX-15) & 89/336/EEC
MANUFACTURER:
YANMAR CO., LTD.
1-32, Chayamachi, Kita-ku, Osaka, Japan
DESCRIPTION OF THE MACHINERY PARTS
CATEGORY: Diesel engine
1.
MAKE: YANMAR
2.
THIS MACHINERY PART MUST NOT BE PUT INTO SERVICE UNTIL THE MACHINERY INTO WHICH IT IS TO BE INCORPORATED HAS
BEEN DECLARED IN CONFORMITY WITH THE PROVISIONS OF THE DIRECTIVE.
IMPORTER IN THE EU:
YANMAR MARINE INTERNATIONAL B.V.
Brugplein 11
1332 BS Almere-de Vaart, The Netherlands
Nagahama, Japan, Sept. 21, 1997
Place and date issued
Y. Sugita
Manager
Quality Assurance Dept.
Power System Operation Div.
President, Yanmar Marine Int’l
President, Yanmar Marine Int’l

advertisement

Was this manual useful for you? Yes No
Thank you for your participation!

* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project

Related manuals

Download PDF

advertisement