Yanmar 6LPA-STP2 User manual

6LPA
series
OPERATION MANUAL
6LPA-STP2
6LPA-STZP2
P/N: 0A6LP-G00102
MARINE
ENGINES

Disclaimers:
All information, illustrations and specifications in this manual are based on the latest
information available at the time of publishing. The illustrations used in this manual are
intended as representative reference views only. Moreover, because of our continuous
product improvement policy, we may modify information, illustrations and / or specifications
to explain and / or exemplify a product, service or maintenance improvement. We reserve
the right to make any change at any time without notice. Yanmar and are
registered trademarks of Yanmar Co., Ltd. in Japan, the United States and / or other
countries.
All Rights Reserved:
No part of this publication may be reproduced or used in any form by any means - graphic,
electronic, or mechanical, including photocopying, recording, taping, or information storage
and retrieval systems - without the written permission of Yanmar Marine International.
© 2007 Yanmar Marine International
1107
ii 6LPA Series Operation Manual
© 2007 Yanmar Marine International

TABLE OF
CONTENTS
Page
Introduction .............................................................. 1
Record of Ownership .............................................. 2
Safety ....................................................................... 3
Safety Precautions ................................................. 4
General Information ......................................... 4
Before You Operate ......................................... 4
During Operation and Maintenance ..................... 4
Location of Safety Decals ........................................ 8
Product Overview ...................................................... 9
Yanmar 6LPA Features and Applications .................... 9
New Engine Break-In ...................................... 10
Component Identification ........................................ 11
Service Side (Left Side as Viewed from
Propeller) ..................................................... 11
Non-Service Side ........................................... 12
Engine Nameplate ................................................ 13
Function of Major Components ................................ 14
Control Equipment ................................................ 15
Instrument Panel (Optional) .............................. 15
Remote Control (Throttle) Handle ...................... 23
Before You Operate .................................................. 27
Diesel Fuel .......................................................... 27
Diesel Fuel Specifications ................................ 27
Filling the Fuel Tank ........................................ 29
Bleeding the Fuel System ................................ 30
Engine Oil ........................................................... 30
Engine (Lube) Oil Specifications ....................... 30
Engine Oil Viscosity ........................................ 31
6LPA Series Operation Manual iii
© 2007 Yanmar Marine International

Checking the Engine Oil .................................. 31
Adding Engine Oil .......................................... 32
Marine Drive Oil .................................................... 32
Mercruiser Bravo Stern Drive Oil
Specifications ................................................ 32
Checking and Adding Marine Drive Oil ................ 33
Checking and Adding Power Steering Oil (6LPA-
STZP2 Models) ............................................. 33
Engine Coolant ..................................................... 33
Engine Coolant Specifications ........................... 33
Checking and Adding Engine Coolant ................. 34
Cranking the Engine .............................................. 35
Daily Checks ....................................................... 36
Visual Checks ............................................... 36
Checking Diesel Fuel, Engine Oil and Engine
Coolant Levels .............................................. 36
Checking and Refilling Marine Drive Oil ............... 36
Checking the Battery Electrolyte Level ................ 36
Checking the Alternator Belt ............................ 36
Checking the Remote Control Handle ................. 37
Checking the Alarm Indicators ........................... 37
Preparing Fuel, Oil and Coolant in Reserve .......... 37
Engine Operation ...................................................... 39
Starting the Engine ................................................ 40
Starting at Low Temperatures ........................... 41
Restarting After Starting Failure ......................... 42
After the Engine Has Started ............................. 42
Remote Control Handle Operation ............................ 44
Acceleration and Deceleration .......................... 44
Shifting the Marine Drive .................................. 45
Shutting Down the Engine ....................................... 46
Periodic Maintenance ................................................ 47
Safety Precautions ................................................ 47
Precautions ......................................................... 49
The Importance of Periodic Maintenance ............. 49
Performing Periodic Maintenance ...................... 49
The Importance of Daily Checks ........................ 49
Keep a Log of Engine Hours and Daily Checks ..... 50
Yanmar Replacement Parts .............................. 50
Tools Required .............................................. 50
Ask Your Authorized Yanmar Marine Dealer or
Distributor For Help ........................................ 50
TABLE OF CONTENTS
iv 6LPA Series Operation Manual
© 2007 Yanmar Marine International

Tightening Fasteners ...................................... 51
EPA Maintenance Requirements .............................. 52
EPA Requirements for USA and Other Applicable
Countries ..................................................... 52
Conditions to Ensure Compliance with EPA
Emission Standards ........................................ 52
Inspection and Maintenance ............................. 53
Periodic Maintenance Schedule ............................... 54
Inspection and Maintenance of EPA Emission-
Related Parts ................................................ 58
Periodic Maintenance Procedures ............................ 59
After Initial 50 Hours of Operation ...................... 59
Every 50 Hours of Operation ............................. 61
Every 125 Hours of Operation ........................... 63
After Initial 250 Hours of Operation ..................... 63
Every 250 Hours of Operation ........................... 64
Every 500 Hours of Operation ........................... 66
Every 1000 Hours of Operation ......................... 68
Every 1250 Hours of Operation ......................... 69
Troubleshooting ....................................................... 71
Troubleshooting After Starting ................................. 71
Troubleshooting Chart ........................................... 73
Troubleshooting Information .................................... 77
Long-Term Storage ................................................... 79
Prepare Engine for Long-Term Storage ...................... 79
Draining the Fresh Water and Seawater Cooling
System ............................................................... 80
Draining the Fresh Water Cooling System ............ 81
Draining Seawater Cooling System .................... 81
Removing the Engine from Long-Term Storage ........... 81
Specifications .......................................................... 83
Principal Engine Specifications ................................ 83
Marine Drive Specifications (Optional) ................ 84
System Diagrams ..................................................... 85
Piping Diagrams ................................................... 85
Wiring Diagrams ................................................... 90
EPA Warranty USA Only ............................................ 97
Yanmar Co., Ltd. Limited Emission Control System
Warranty - USA Only ............................................. 97
Your Warranty Rights and Obligations: ................ 97
TABLE OF CONTENTS
6LPA Series Operation Manual v
© 2007 Yanmar Marine International

Warranty Period: ............................................ 98
Warranty Coverage: ........................................ 98
Exclusions: ................................................... 98
Owner’s Responsibility: ................................... 99
Customer Assistance: ..................................... 99
Maintenance Log ......................................... 100
TABLE OF CONTENTS
vi 6LPA Series Operation Manual
© 2007 Yanmar Marine International

INTRODUCTION
Welcome to the world of Yanmar Marine!
Yanmar Marine offers engines, drive
systems and accessories for all types of
boats, from runabouts to sailboats, and from
cruisers to mega yachts. In marine leisure
boating, the worldwide reputation of Yanmar
Marine is second to none. We design our
engines to respect nature. This means
quieter engines, with minimal vibrations,
cleaner than ever. All of our engines meet
applicable regulations, including emissions,
at the time of manufacture.
To help you enjoy your Yanmar 6LPA series
engine for many years to come, please
follow these recommendations:
• Read and understand this Operation
Manual before you operate the engine to
ensure that you follow safe operating
practices and maintenance procedures.
• 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
authorized Yanmar Marine dealer or
distributor.
• Make sure this manual is transferred to
subsequent owners. This manual should
be considered a permanent part of the
engine and remain with 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 these differences, please contact
your authorized Yanmar Marine dealer or
distributor.
• The specifications and components
(instrument panel, fuel tank, etc.)
described in this manual may differ from
ones installed on your vessel. Please refer
to the manual provided by the
manufacturer of these components.
• Refer to the Yanmar Limited Warranty
Handbook for a complete warranty
description.
6LPA Series Operation Manual 1
© 2007 Yanmar Marine International

RECORD OF OWNERSHIP
Take a few moments to record the information you need when you contact Yanmar for
service, parts or literature.
Engine Model:
Engine Serial No.:
Date Purchased:
Dealer:
Dealer Phone:
INTRODUCTION
26LPA Series Operation Manual
© 2007 Yanmar Marine International

SAFETY
Yanmar considers safety of great
importance and recommends that anyone
that comes into close contact with its
products, such as those who install,
operate, maintain or service Yanmar
products exercise care, common sense and
comply with the safety information in this
manual and on the engine’s safety decals.
Keep the decals from becoming dirty or torn
and replace them if they are lost or
damaged. Also, if you need to replace a part
that has a decal attached to it, make sure
you order the new part and decal at the same
time.
!
This safety alert symbol appears
with most safety statements. It
means attention, become alert,
your safety is involved! Please
read and abide by the message
that follows the safety alert
symbol.
!
DANGER
Indicates a hazardous situation which, if
not avoided, will result in death or
serious injury.
!
WARNING
Indicates a hazardous situation which, if
not avoided, could result in death or
serious injury.
!
CAUTION
Indicates a hazardous situation which, if
not avoided, could result in minor or
moderate injury.
NOTICE
Indicates a situation which can cause
damage to the engine, personal property
and / or the environment or cause the
equipment to operate improperly.
6LPA Series Operation Manual 3
© 2007 Yanmar Marine International

SAFETY PRECAUTIONS
General Information
There is no substitute for common sense
and careful practices. Improper practices or
carelessness can cause burns, cuts,
mutilation, asphyxiation, other bodily injury
or death. This information contains general
safety precautions and guidelines that must
be followed to reduce risk to personal safety.
Special safety precautions are listed in
specific procedures. Read and understand
all of the safety precautions before operation
or performing repairs or maintenance.
Before You Operate
!
DANGER
The safety messages that follow have
WARNING level hazards.
NEVER permit anyone to
install or operate the
engine without proper
training.
• Read and understand this Operation
Manual before you operate or service the
engine to ensure that you follow safe
operating practices and maintenance
procedures.
• Safety signs and labels are additional
reminders for safe operating and
maintenance techniques.
• See your authorized Yanmar Marine
dealer or distributor for additional training.
During Operation and
Maintenance
!
DANGER
The safety message that follows has
DANGER level hazards.
Crush Hazard
NEVER stand under hoisted
engine. If the hoist mechanism
fails, the engine will fall on you.
SAFETY
46LPA Series Operation Manual
© 2007 Yanmar Marine International

!
WARNING
The safety messages that follow have
WARNING level hazards.
Explosion Hazard
While the engine is running or
the battery is charging,
hydrogen gas is being
produced and can be easily
ignited. Keep the area around
the battery well-ventilated and keep sparks,
open flames and any other form of ignition
out of the area.
Fire and Explosion Hazard
Diesel fuel is flammable and explosive
under certain conditions.
NEVER use a shop rag to catch the fuel.
Wipe up all spills immediately.
NEVER refuel with the engine running.
Store any containers containing fuel in a
well-ventilated area, away from any
combustibles or sources of ignition.
Fire Hazard
Undersized wiring systems
can cause an electrical fire.
Sever Hazard
Rotating parts can cause
severe injury or death. NEVER
wear jewelry, unbuttoned
cuffs, ties or loose fitting
clothing and ALWAYS tie long
hair back when working near moving /
rotating parts such as the flywheel or PTO
shaft. Keep hands, feet and tools away from
all moving parts.
Alcohol and Drug Hazard
NEVER operate the engine
while under the influence of
alcohol or drugs or feeling ill.
Exposure Hazard
To avoid injury, ALWAYS
wear personal protective
equipment including
appropriate clothing, gloves,
work shoes, eye and hearing
protection as required by the task at hand.
Entanglement Hazard
NEVER leave the key in the
key switch when you are
servicing the engine.
Someone may accidentally
start the engine and not realize
you are servicing it.
NEVER operate the engine while wearing a
headset to listen to music or radio because
it will be difficult to hear the warning signals.
Stop the engine before you begin to service
it.
If you must service the engine while it is
operating, remove all jewelry, tie back long
hair, and keep your hands, other body parts
and clothing away from moving / rotating
parts.
SAFETY
6LPA Series Operation Manual 5
© 2007 Yanmar Marine International

!
WARNING
Piercing Hazard
Avoid skin contact with high-
pressure diesel fuel spray
caused by a fuel system leak
such as a broken fuel injection
line. High-pressure fuel can
penetrate your skin and result in serious
injury. If you are exposed to high-pressure
fuel spray, obtain prompt medical treatment.
NEVER check for a fuel leak with your
hands. ALWAYS use a piece of wood or
cardboard. Have your authorized Yanmar
Marine dealer or distributor repair the
damage.
Burn Hazard
Some of the engine surfaces
become very hot during
operation and shortly after
shut-down. Keep hands and
other body parts away from
hot engine surfaces.
Sudden Movement Hazard
ALWAYS stop the engine before beginning
service.
Exhaust Hazard
NEVER block windows, vents
or other means of ventilation if
the engine is operating in an
enclosed area. All internal
combustion engines create
carbon monoxide gas during operation and
special precautions are required to avoid
carbon monoxide poisoning.
!
CAUTION
The safety messages that follow have
CAUTION level hazards.
Poor Lighting Hazard
Ensure that the work area is adequately
illuminated. ALWAYS install wire cages on
portable safety lamps.
Tool Hazard
ALWAYS use tools appropriate for the task
at hand and use the correct size tool for
loosening or tightening engine parts.
Flying Object Hazard
ALWAYS wear eye protection when
servicing the engine or when using
compressed air or high-pressure water.
Dust, flying debris, compressed air,
pressurized water or steam may injure your
eyes.
Coolant Hazard
Wear eye protection and
rubber gloves when you
handle Long Life engine
coolant. If contact with the
eyes or skin should occur,
flush eyes and wash immediately with clean
water.
SAFETY
66LPA Series Operation Manual
© 2007 Yanmar Marine International

NOTICE
The safety messages that follow have
NOTICE level hazards.
It is important to perform daily checks as
listed in the Operation Manual.
Periodic maintenance prevents unexpected
downtime, reduces the number of accidents
due to poor engine performance and helps
extend the life of the engine.
See your authorized Yanmar Marine dealer
or distributor if you need to operate the
engine at high altitudes. At high altitudes the
engine will lose power, run rough and
produce exhaust gases that exceed the
design specifications.
ALWAYS be environmentally
responsible.
Follow the guidelines of the EPA or other
governmental agencies for the proper
disposal of hazardous materials such as
engine oil, diesel fuel and engine coolant.
Consult the local authorities or reclamation
facility.
NEVER dispose of hazardous materials by
dumping them into a sewer, on the ground
or into ground water or waterways.
If a Yanmar Marine Engine is installed at an
angle that exceeds the specifications stated
in the Yanmar Marine Installation manuals,
engine oil may enter the combustion
chamber causing excessive engine speed,
white exhaust smoke and serious engine
damage. This applies to engines that run
continuously or those that run for short
periods of time.
If you have an installation with two or three
engines and only one engine is operating,
the water pickup (thru-hull) of the non-
running engine(s) should be closed. This will
prevent water from being forced past the
seawater pump and eventually finding its
way into the engine. The result of water
entering the engine could cause seizure or
other serious problems.
If you have an installation with two or three
engines, and only one engine is operating,
please note that if the propeller shaft thru-
hull (stuffing box) is lubricated by engine
water pressure and the engines are
interconnected, care must be taken that
water from the running engine does not
enter the exhaust of the non-running
engine(s). This water could cause seizure of
the non-running engine(s). See your
authorized Yanmar Marine dealer or
distributor for a complete explanation of this
condition.
If you have an installation with two or three
engines, and only one engine is operating,
it is important to limit the amount of throttle
applied to the running engine. If you observe
black smoke or movement of the throttle
does not increase engine rpm, you are
overloading the engine that is running.
Immediately throttle back to approximately
2/3 throttle or to a setting where the engine
performs normally. Failure to do so may
cause the running engine to overheat or
cause excess carbon buildup which may
shorten the engine's life.
NEVER attempt to adjust the low or high idle
speed limit screw. This may impair the
safety and performance of the engine and
shorten its life. Modifications of this type may
void the warranty. If adjustment is ever
required, contact your authorized Yanmar
Marine dealer or distributor.
SAFETY
6LPA Series Operation Manual 7
© 2007 Yanmar Marine International

LOCATION OF SAFETY DECALS
Figure 1 shows the location of safety decals on Yanmar 6LPA series marine engines.
0004813
NEVER pour the
engine oil across
the full line.
119773-07280
DANGER
FULL
LOW
(1) (2) (3) (4)
(5)
Figure 1
1 – Part Number: 120324-07240
2 – Part Number: 128296-07260
3 – Part Number: 119773-07280
4 – Part Number: 128296–07300
5 – Part Number: 128296–07360
Note: Figure 1 shows an overhead view of the 6LPA engine.
SAFETY
86LPA Series Operation Manual
© 2007 Yanmar Marine International

PRODUCT OVERVIEW
YANMAR 6LPA FEATURES
AND APPLICATIONS
The 6LPA series are 6-cylinder, 4-stroke
direct injection diesel engines equipped with
liquid coolant systems.
The 6LPA-STP2 engines are equipped with
a marine gear (ZF63A1 or KMH50A).
The 6LPA-STZP2 engines are equipped
with a stern drive (Mercruiser Bravo).
These engines are designed for pleasure
craft use.
It is recommended that new vessels be
propped so the engines can operate at
50 - 100 rpm above the rated power output
(3800 rpm) to allow for future added weight
and hull resistance. The engine must be
able to reach the rated power output rpm
under full load at all times.
Failure to do so can lead to reduced vessel
performance, lead to increased smoke
levels and cause permanent damage to your
engine.
The engine must be installed correctly with
coolant lines, exhaust gas lines 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, always observe the instructions
and cautions given in the operation manuals
supplied by the shipyard and equipment
manufacturers.
The 6LPA series engines are designed to be
operated at maximum throttle (3800 rpm) for
less than 5% of total engine time (30 minutes
out of every 10 hours) and cruising speed
(2800 - 3600 rpm or less) for less than 90%
of total engine time (9 hours out of every 10
hours).
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. See Yanmar's local
subsidiary in your region or your authorized
Yanmar Marine dealer or distributor.
6LPA Series Operation Manual 9
© 2007 Yanmar Marine International

New Engine Break-In
As with all reciprocating engines, the way
your engine is operated during its first 50
hours of operation plays a very significant
role in determining how long it will last and
how well the engine will perform over its
lifetime.
A new Yanmar diesel engine must be
operated at suitable speeds and power
settings during the break-in period to make
the sliding parts, such as piston rings, break
in properly and to stabilize engine
combustion.
During the break-in period, the engine
coolant temperature gauge should be
monitored, temperature should be between
71˚ - 87˚C (160˚ - 190˚F).
During the first 10 hours of operation, the
engine should be run at maximum rpm
minus 400 - 500 rpm (approximately
60 - 70% of load) most of the time. This will
ensure the sliding parts break in properly.
During this period, avoid operating at
maximum engine speed and load to avoid
damaging or scoring sliding parts.
NOTICE: Do not operate at WOT (wide
open throttle) for more than a minute at
a time during the first 10 hours of
operation.
Do not operate the engine at low idle or at
low speed and light load for more than
30 minutes at a time. Since unburned fuel
and engine oil will adhere to the piston rings
when operating at low speeds for long
periods, this will interfere with proper
movement of the rings and the lube oil
consumption may increase. Low idle speed
does not allow break-in of sliding parts.
If operating engine at low speed and light
load, you must race the engine to clean the
carbon from the cylinders and fuel injection
valve.
Perform this procedure in open waters:
• With the clutch in NEUTRAL, accelerate
from the low speed position to the high
speed position briefly.
• Repeat this process five times.
Once past the initial 10 hours until 50 hours,
the engine should be used over its full
operating range, with special emphasis on
running at relatively high power settings.
This is not the time for an extended cruise at
idle or low speed. The boat should be run at
maximum speed minus 400 rpm most of the
time (approximately 70% load), with a 10
minute run at maximum minus 200 - 300 rpm
(approximately 80% load) every 30 minutes
and a 4 - 5 minute period of operation at
WOT (wide open throttle) once each 30
minutes. During this period, be sure not to
operate your engine at low speed and light
load for more than 30 minutes. If operating
engine at low speed and light load by
necessity, just after the low idle operation,
be sure to race the engine.
To complete engine break-in, perform After
Initial 50 Hours maintenance procedures.
See Periodic Maintenance Schedule on
page 54.
PRODUCT OVERVIEW
10 6LPA Series Operation Manual
© 2007 Yanmar Marine International

COMPONENT IDENTIFICATION
Service Side (Left Side as Viewed from Propeller)
Note: 6LPA-STZP2 with stern drive shown. Components marked with an * are for
6LPA-STZP2 only.
(1)
(2) (3*) (4)
(5) (6)
(12)
(11) (10) (9) (8) (7)
0004884
Figure 1
1 – Fuel Cooler
2 – Fuel Filter
3 – Power Steering Oil Cooler*
4 – Engine Oil Filter
5 – Intercooler
6 – Mixing Elbow
7 – Engine Oil Cooler
8 – Starter
9 – Engine Oil Cooler
10 – Fuel Injection Pump
11 – Seawater Pump
12 – Stern Drive
PRODUCT OVERVIEW
6LPA Series Operation Manual 11
© 2007 Yanmar Marine International

Non-Service Side
(1) (2) (3) (4*) (5)(6)
(7*)
(8)
(9)
(10)
(11)
0004885
Figure 2
1 – Turbocharger
2 – Engine Nameplate (on rocker arm cover)
3 – Fresh Water (Coolant) Tank
4 – Power Steering Oil Tank*
5 – Fresh Water Filler Cap
6 – Engine Oil Filler Cap
7 – Power Steering Oil Pump*
8 – Alternator
9 – Engine Oil Dipstick
10 – Fresh Water Cooler
11 – V-Belt
PRODUCT OVERVIEW
12 6LPA Series Operation Manual
© 2007 Yanmar Marine International

ENGINE NAMEPLATE
/
Gear Model
ENG.No.
/
Model
min-1
min-1
min-1
Continuous power kW
Speed of prop,shaf t
Fuel stop power kW
0004574
Figure 3
The nameplate of Yanmar 6LPA series
engines is shown in Figure 3. The
nameplate is located on the engine rocker
arm cover. Check the engine's model,
output, rpm and serial number on the
nameplate. Replace if damaged or lost.
PRODUCT OVERVIEW
6LPA Series Operation Manual 13
© 2007 Yanmar Marine International

FUNCTION OF MAJOR COMPONENTS
Name of Component Function
Fuel Filter Removes dirt and water from the fuel. The filter is a cartridge type, and the
inner element should be replaced before clogging occurs. A water separator
is on the bottom of the filter and should be drained periodically.
Fuel Feed Pump A mechanical pump that pumps fuel from the tank to the fuel injection pump.
It is built in to the fuel injection pump.
Fuel Bleed Pump This is a manual fuel pump. Pushing the knob on the top of the fuel filter
feeds the fuel. The pump is also used to bleed air from the fuel system.
Engine Oil Filler Port Filler port for engine oil.
Engine Oil Filter Filters fine metal fragments and carbon from the engine oil. Filtered engine
oil is distributed to the engine’s moving parts. The filter is a cartridge type
and should be replaced periodically.
Engine Oil Dipstick Gauge stick for checking the engine oil level.
Marine Gear Oil Filler Port (If
Equipped)
Filler port for marine gear lube oil. Located on top of the marine gear case.
Cooling System There are two cooling systems: fresh water and seawater.
• Fresh Water (Coolant)
Tank
• Fresh Water Cooler
• Cooling Water Pump
The tank stores the fresh cooling water and is connected to the fresh water
cooler. Cooling seawater passes through the fresh water cooler to cool the
fresh water by heat exchange. After cooling, the cooled fresh water is fed
by the cooling water pump to the inside of the engine, around the combustion
chamber, turbocharger and then returned to the tank.
Filler Cap Located on the top of the fresh water recovery tank. It has two pressure
regulating valves (release and retraction valves). When the cooling water
tempereature rises, the pressure inside the fresh water tank increases
causing the release valve in the filler cap to open.
Coolant Recovery Tank Hot water and steam pass through a rubber hose to the subtank for cooling.
(The filler port and the subtank are connected by a rubber hose.) When the
load is reduced and the cooling water temperature falls, the pressure in the
fresh water tank is lowered, activating the retraction valve in the filler cap.
This causes the cool water in the subtank to return to the fresh water recovery
tank. This process reduces the consumption of cooling water.
Turbocharger A 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.
Intercooler This heat exchanger cools the pressurized charging air from the
turbocharger with water.
Zinc Anode The metal area of the seawater cooling system is prone to galvanic
corrosion. The zinc anode is installed in the various coolers to prevent this.
When the zinc anode becomes worn, components in the fresh water cooler,
oil cooler, etc. will corrode. Periodic replacement of the zinc anode is
necessary.
Nameplates Nameplates are provided on the engine and have the model, serial number
and other data.
Starter A DC motor for starting the engine. Electric current causes the pinion gear
to engage with the ring gear on the flywheel to start the engine.
Alternator This generator rotates by a V-belt drive to charge the battery during
operation.
PRODUCT OVERVIEW
14 6LPA Series Operation Manual
© 2007 Yanmar Marine International