Yamaha EH64 User manual

PRINTED IN JAPAN
2018 • 09-0.1×1 !
(E, F, G, H, S)PRINTED ON RECYCLED PAPER
EH64
EH65
EH72
7D3-28199-U0LIT-19626-02-66
E
I
ES
OWNER’S MANUAL
MANUEL DU PROPRIÉTAIRE
BEDIENUNGSANLEITUNG
USO E MANUTENZIONE
MANUAL DEL PROPIETARIO
F
D
Read this manual carefully before operating this machine.
Il convient de lire attentivement ce manuel avant la première utilisation de la machine.
Bitte lesen Sie diese Bedienungsanleitung sorgfältig durch, bevor Sie die Maschine in Betrieb neh-
men.
Leggere attentamente questo manuale prima di utilizzare questa macchina.
Lea este manual atentamente antes de utilizar este equipo.
Original instructions
Notice originale
Originalbetriebsanleitung
Istruzioni originali
Manual original
7D3-28199-U0_cover_6mm.indd 1-3 2018/10/03 11:34:31

[appendix]
Instructions for treatment as waste
When disposing this product, make sure that the fuel and oil should be drained from the engine, and
submit to local regulations.
E
[Annexe]
Instructions pour le traitement des déchets
Quand ce produit doit être mis au rebut, s’assurer que le carburant et l’huile ont été vidangés
correctement à partir du moteur, et que les règlements locaux sont bien observés.
F
[Anhang]
Anweisungen für die Behandlung als Abfall
Bei der Entsorgung dieses Produkts sicherstellen, dass der Kraftstoff und das Öl aus dem Motor
abgelassen wird und unter Befolgung aller örtlich gültigen Bestimmungen entsorgt wird.
D
[anexo]
Instrucciones para el tratamiento de los residuos
Cuando este producto debe ponerse al rechazo, asegurarse de que el combustible y el aceite
se purgaron correctamente a partir del motor, y que se observan bien los reglamentos locales.
ES
[appendix]
Istruzioni per lo smaltimento
Per lo smaltimento di questo prodotto, assicurarsi di aspirare il carburante e l’olio dal motore,
in conformità con le regolamentazioni locali.
I
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7D3-28199-U0-E0
EH64
EH65
EH72
OWNER’S MANUAL
Read this manual carefully before operating this machine.
LIT-19626-02-66
7D3-28199-U0-E0.indd 1 2018/10/03 11:34:47


(California only)
AIR INDEX
To show compliance with California emission regulations, a hangtag has been provided
displaying the Air Index level and durability period of this engine.
The Air Index level defines how clean an engine’s exhaust is over a period of time. A bar graph
scaled from “0” (most clean) to “10” (least clean) is used to show an engine’s Air Index level. A
lower Air Index level represents cleaner exhaust from an engine.
The period of time (in hours) that the Air Index level is measured is known as the durability
period. Depending on the size of the engine, a selection of time periods can be used to
measure the Air Index level (see below).
Descriptive Term Applicable to Emissions Durability Period
Moderate - 50 hours (engine from 0 to 80 cc)
125 hours (engine greater than 80 cc)
Intermediate - 125 hours (engine from 0 to 80 cc)
250 hours (engine greater than 80 cc)
Extended - 300 hours (engine from 0 to 80 cc)
500 hours (engine greater than 80 cc)
1000 hours (225 cc and greater)
Notice : This hangtag must remain on this engine or piece of equipment, and only be
removed by the ultimate purchaser before operation.
Notice : FEDERAL EMISSION COMPONENT DEFECT WARRANTY and CALIFORNIA EMISSION CONTROL
WARRANTY are applicable to only those engines/generators complied with EPA (Environmental Protection
Agency) and CARB (California Air Resources Board) emission regulations in the U.S.A.
Notice : To the engines/generators exported to and used in the countries other than the U.S.A., warranty service
shall be performed by the distributor in each country in accordance with the standard YAMAHA engine/
generator warranty policy as applicable.
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FOREWORD
Thank you very much for purchasing a YAMAHA ENGINE.
Engine serial No.
Engine
Emission
label
Serial No.
Model No.
Your YAMAHA ENGINE can supply the power to operate various
sorts of machines and equipment.
Please take a moment to familiarize yourself with the proper
operation and maintenance procedures in order to maximize the
safe and efficient use of this product.
Due to constant efforts to improve our products, certain
procedures and specifications are subjected to change without
notice.
When ordering spare parts, always give us the MODEL,
SERIAL and ENGINE SERIAL NUMBER of your engine.
Please fill in the following blanks after checking the specification
number on your engine.
MODEL NO.
SERIAL NO.
ENGINE SERIAL NO.
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CONTENTS
1. SAFETY PRECAUTIONS.......................................................1
2. COMPONENTS ......................................................................4
3. PRE-OPERATION CHECKS ..................................................5
4. BATTERY INSTALLATION.....................................................7
5. OPERATING YOUR ENGINE.................................................9
6. EASY TROUBLESHOOTING...............................................12
7. SPARK ARRESTER (OPTIONAL).......................................14
8. MAINTENANCE SCHEDULE...............................................15
9. “HOW-TO” MAINTENANCE................................................17
10. PREPARATIONS FOR STORAGE.....................................21
11. SPECIFICATIONS ..............................................................22
IMPORTANT MANUAL INFORMATION
Particularly important information is distinguished in this manual by the following
notations.
This is the safety alert symbol. It is used to alert you to potential personal injury
hazards. Obey all safety messages that follow this symbol to avoid possible injury
or death.
WARNING
A WARNING indicates a hazardous situation which, if not avoided, could result in
death or serious injury.
NOTICE
A NOTICE indicates special precautions that must be taken to avoid damage to
the machine or other property.
TIP
A TIP provides key information to make procedures easier or clearer.
7D3-28199-U0-E0.indd 4 2018/10/03 11:34:48

SYMBOLS
Read manual. Shut off fuel valve
when the engine is not in use.
Stay clear of the hot surface. Check for leakage
from hose and fittings.
Exhaust gas is poisonous.
Do not operate in an unventilated
room or enclosed area.
Fire, open flame and smoking
prohibited.
Stop the engine before refueling. HOT, avoid touching the hot area.
USA and CANADA only
Read INSTRUCTIONS
FOR USE before use.
The engine emits
toxic gas can kill
you in minutes.
Do not run in an
enclosed area.
Hot surface can
burn you.
Stay away if engine
has been running.
Gasoline is extremely flammable and its vapors can explode.
9
Stop the engine before refueling.
9
Check for leakage from hoses and fittings.
9
Shut off fuel valve when the engine is not in use.
On (Run) Engine start
(Electric start) Fuel (gasoline)
Off (Stop) Engine stop Fuel (diesel)
Engine oil Cold engine Fuel shut-off
Add oil Warm engine Fuel system
failure/malfunction
Battery Electrical preheat
(Low tem-perature start aid)
Choke
Fast Run position Plus;
positive polarity
Slow Stop position Minus;
negative polarity
Primer Push primer Do not push primer
Two times
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– 1 – – 2 –
EXHAUST PRECAUTIONS
■Never inhale exhaust gas.
It contains carbon monoxide, a colorless,
odorless and extremely dangerous gas
which can cause unconsciousness or
death.
■Never operate the engine indoors or in a
poorly ventilated area, such as tunnel,
cave, etc.
■Exercise extreme care when operating
the engine near people or animals.
■Keep the exhaust pipe free of foreign
objects.
REFUELING PRECAUTIONS
■Be sure to stop the engine prior to
refueling.
■Do not overfill the fuel tank.
■If fuel is spilt, wipe it away carefully and
wait until the fuel has dried before
starting the engine.
■After refueling, make sure that the fuel
cap is secured to prevent spillage.
FIRE PREVENTION
■Do not operate while smoking or near an
open flame.
■Do not use around dry brush, twigs, cloth
rags, or other flammable materials.
■Keep the engine at least 3 feet (1 meter)
away from buildings or other structures.
■Keep the engine away from flammables
and other hazardous materials (trash,
rags, lubricants, explosives).
1. SAFETY PRECAUTIONS
Please make sure you review each precaution carefully.
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– 1 – – 2 –
PROTECTIVE COVER
■Place the protective covers over the
rotating parts.
If rotating parts such as the drive shaft,
pulley, belt, etc. are left exposed, they are
potentially hazardous.
To prevent injury, equip them with
protective covers or shrouds.
■Be careful of hot parts.
The muffler and other engine parts
become very hot while the engine is
running or just after it has stopped.
Operate the engine in a safe area and
keep children away from the running
engine.
■Never make adjustments on the
machinery while it is connected to the
engine, without first removing the ignition
cable from the spark plug. Turning the
crankshaft by hand during adjusting or
cleaning might start the engine, and the
machinery with it, causing serious injury
to the operator.
■Never run the engine with governor
disconnected, or operate at speeds in
excess of 3600 r/min load.
SURROUNDINGS
■Operate the engine on a stable, level
surface free of small rocks, loose gravel,
etc.
TIP
Operating the engine at a steep incline may
cause seizure due to improper lubrication
even with a maximum oil level.
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– 3 – – 4 –
■Drain the fuel when transporting the
engine.
■Do not move the engine while in
operation when it has been removed
from the equipment.
■Keep the unit dry (do not operate it in
rainy conditions).
PRE-OPERATION CHECKS
■Carefully check fuel hoses and
connections for looseness and fuel
leakage. Leaking fuel creates a
potentially dangerous situation.
■Check bolts and nuts for looseness.
A loose bolt or nut may cause serious
engine trouble.
■Check the engine oil daily and refill if
necessary.
■Check the fuel level and refill if
necessary.
Do not overfill the tank.
■Wear snug fitting working clothes when
operating the engine.
Loose aprons, towels, belt, etc., may be
caught in the engine or drive train,
causing a dangerous situation.
PRECAUTIONS ON THE HANDLING OF THE WARNING LABEL
■Warning labels are affixed to our engines with regard to particularly serious dangers.
When using the engines, please use them safely after carefully reading the instruction
manual and understanding the dangers.
Warning Label Exclusively for the United States and Canada
AVERTISSEMENT
Lire les INSTRUCTIONS
POUR L'USAGE avant d’
utiliser le moteur.
L'essence est extrêmement
inflammable et ses vapeurs
peuvent exploser.
• Arrêter le moteur avant de
faire le plein en combustible.
• Vérifier toute présence de
fuite à partir des tuyaux et
garnitures.
• Bloquer la soupape de
carburant quand le moteur
n’est pas utilisé.
Le moteur émet un gaz toxique
qui peut tuer l’opérateur en
quelques minutes.
Ne pas utiliser le moteur dans
un emplacement fermé.
La surface chaude peut vous
brûler.
S’éloigner du moteur s’il est en
marche.
ADVERTENCIA
Leer las INSTRUCCIONES
PARA EL USO antes de utilizar
el motor.
La gasolina es extremadamente
inflamable y sus vapores
pueden estallar.
• Detener el motor antes de
hacer el lleno en combustible
• Comprobar si hay presencia
de fuga a partir los tubos y
guarniciones
• Bloquear la válvula de
combustible cuando no se
utiliza el motor.
El motor emite un gas tóxico
que puede matar el operador
en algunos minutos.
No utilizar el motor en un sitio
cerrado.
La superficie caliente puede
quemarles.
Alejarse del motor si es en
marcha.
For use in the United States or Canada, please affix the label suited to the region from among the
enclosed warning labels.
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– 3 – – 4 –
REMARKS :
■Fuel tank, valve (sediment bowl type is recommended), fuel hoses, and fuel filter are
required for connecting fuel source to carburetor.
■A battery rated at 12V-30AH or larger with the specified cable are required for electric
starter operation. Make the proper electrical wiring arrangements before normal
engine operation.
(See Section 4 Battery Installation)
2. COMPONENTS
Air cleaner cover
Spark plug cap
Key switch
Choke knob
Control box
Acceleration lever
Fan case
Fuel filter
Fuel pump
Oil filter
Spark plug cap
PTO shaft
Oil drain plug
(On both sides)
Oil filler cap
Electric starter
Carburetor
Oil level gauge
Engine hanger
Rectifier
regulator
Governor arm
Engine
emission label
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– 5 – – 6 –
3. PRE-OPERATION CHECKS
CHECK ENGINE OIL (DAILY)
Before checking or refilling engine oil, be
sure the engine is not running and is
located on a stable, level surface.
■If the oil level is below the lower level line
on the oil level gauge, refill with the
proper oil (see table) to the upper level.
Engine oil quantity:
1.55 L (0.41 US qt)
■When filling oil in the engine, keep the
engine level and fill the oil up to the upper
mark of the oil level gauge. Measure the
oil level with the oil level gauge plugged
in position.
■After an oil change, run the engine, and
recheck the oil level. The oil level may
drop a little as the oil fills the oil filter.
Fill the oil up to the upper mark of the oil
level gauge.
■Change oil if it is contaminated.
(See Section 8 Maintenance Schedule)
■Use 4-stroke automotive detergent oil of
API service class SE or higher grade
(SG, SH or SJ is recommended).
■If multi-grade oil is used, oil consumption
tends to increase when the ambient
temperature is high.
STD-type Option
Oil level
gauge
Upper level
Lower level
Oil level
gauge
Oil level
gauge Oil level gauge
Upper
level Upper level
Lower
level Lower level
5W
10W
20W
#20
#30
#40
10W-30
10W-40
-20 -10 0 10 20 30 40
-4 14 32 50 68 86 104
Single
grade
Multi
grade
Ambient
temperature
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– 5 – – 6 –
CHECK FUEL
WARNING
Do not refuel while smoking, near an
open flame or other potential hazards.
TIP
THIS ENGINE IS CERTIFIED TO
OPERATE ON UNLEADED GASOLINE.
■The fuel tank shall be provided
separately, because the engine is not
equipped with a fuel tank.
A fuel valve and fuel filter should be
connected between the fuel tank and fuel
pump.
Securely connect with fuel hoses to the
fuel pump to prevent leakage.
■Fuel tanks may be mounted up to 0.66
meters (2 feet) below the carburetor.
If the fuel tank is mounted above the
carburetor, a fuel shut off valve must be
connected between the fuel tank and fuel
pump. The fuel valve must be shut off
when the engine is not operating to
prevent fuel from flooding the carburetor.
■A serious accident may occur if the fuel
hose comes off. Properly secure the fuel
line connections by completely inserting
the hose onto the fittings and securing
the connection with a hose clamp.
■Use unleaded gasoline only.
●Unleaded regular/premium or reformulated gasoline containing no more than 10%
Ethanol (E10), or 15% MTBE may also be used.
●Never use gasoline containing ethanol exceeding 10%, or MTBE exceeding 15%
because engine or fuel system damage could result.
●Never use stale or contaminated gasoline.
●Use of these non-recommended fuels may result in reduced performance and/or
denial of warranty.
■Stop the engine and close the fuel valve before filling the fuel tank.
■Wipe off any spilled fuel before starting the engine.
Fuel pump
Rubber pipe
Fuel filter
Fuel inlet
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– 7 – – 8 –
PARTS NEEDED
■Use a battery rated 12V-30AH or larger.
■Use a proper cable and ground wire to
connect battery and key switch and
electric starter.
BATTERY CABLE
CABLE
LENGTH
CABLE
DIA.
WIRE GAUGE
AWG (BS)
BWG SAE JIS
Less than
1.5 m 7.3 mm 1 6 AV15
1.5 m
to 2.5 m 8.5 mm 0 4 AV20
2.5 m
to 4.0 m 10.8 mm 3/0 2 AV30
GROUND WIRE, use a flat braided wire of
0.03 sq. in. or larger sectional area.
(SAE GAUGE 4)
KEY SWITCH CABLE
CABLE
LENGTH
CABLE
DIA.
WIRE GAUGE
AWG (BS) BWG JIS
Less than
1.5 m 1.5 mm 14 16 AV1.25
1.5 m
to 3.0 m 1.9 mm 12 14 AV2
3.0 m
to 5.0 m 2.4 mm 10 13 AV3
4. BATTERY INSTALLATION
For electric starter operation, proper electric wiring arrangements are needed before
normal engine operation.
25mm
LA406 LA408
CABLE
EARTH (GROUND) WIRE
Positive side
of starter motor
Positive side
of battery
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– 7 – – 8 –
WIRING
■Connect positive terminal of electric
starter and positive terminal of the
battery with battery cable.
■Ground negative terminal of the
battery to the body of engine or
machine with ground wire.
TIP
Tighten bolts and nuts on terminals
securely so they will not be loosened by
vibration.
WIRING DIAGRAM
SB
M
GL
G M B L S
OFF
Terminal
Key
Position
RUN
START
CARBURETOR
BLACK
BLACK
BLACK
BATTERY
12V
SPARK
PLUG
SPARK
PLUG
GRAY
BLACK / WHITE
ELECTRIC
STARTER
IGNITION
COIL #1
OIL
PRESSURE
SWITCH
WHITE
GREEN
OIL WARNING LAMP
(HIGH TENSION CORD)
REGURATOR
YELLOW
YELLOW
TACHO / HOUR METER
CHARGE
COIL
REDRED
RED
KEY
SWITCH
IGNITION
COIL #2
Optional hardware shown by dotted lines. Select wires of proper gauge and connect
battery as shown by the dotted line in the wiring diagram.
+
-
Cable
Electric starter
terminal
Earth wire
Battery
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– 9 – – 10 –
5. OPERATING YOUR ENGINE
TIP
Following operating method is for the
STD type acceleration lever.
As to the fixed type acceleration lever
(exp. Generator spec.), do not move it
otherwise the generator component
such as rectifier regulator may be
damaged.
STARTING
1
FUEL VALVE
(Provided by the equipment
manufacturer)
Open the fuel valve.
ACCELERATION LEVER
Set the acceleration lever 1/3 of
the way towards the high speed
position.
2
CHOKE KNOB
CLOSE
Pull the choke knob.
■If the engine is cold or the
ambient temperature is low, pull
the choke knob fully.
■If the engine is warm or the
ambient temperature is high,
pull the choke knob half-way, or
keep it fully open.
3
Choke adjustment is
not necessary for the
auto-choke engine.
3
ELECTRIC STARTER
OFF
RUN
START
Turn the key switch to the “START”
position.
■
Do not operate the electric starter
continuously for more than 5 seconds,
even if the engine does not start.
■
If the engine failed to start, set the
key to the “RUN” position and wait
for about 10 seconds before retrying.
■Never turn the key switch to the
“ START ” position while engine is
running.
4
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– 9 – – 10 –
5
CHOKE KNOB
OPEN
■After starting the engine,
gradually open choke by
pushing the choke knob and
finally keep it fully opened.
■Do not fully open the choke
immediately when the engine is
cold or the ambient temperature
is low, because the engine may
stop.
Choke adjustment is
not necessary for the
auto-choke engine.
5
RUNNING
ACCELERATION LEVER
After the engine starts, set the
acceleration lever at the low
speed position and warm it up
without load for a few minutes.
Gradually move the acceleration
lever toward the high speed
position and set it at the required
engine speed.
TIP
Whenever high speed operation is
not required, slow the engine down
(idle) by moving the acceleration
lever to save fuel and extend
engine life.
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– 11 – – 12 –
STOPPING
ACCELERATION LEVER
Set the acceleration lever at the
low speed position and allow the
engine to run at low speed for 2 or
3 minutes before stopping.
1
ELECTRIC STARTER
OFF
RUN
START
Turn the key switch to the “OFF”
position.
2
3
FUEL VALVE
Close the fuel valve.
STOPPING ENGINE
WITH THE FUEL VALVE
Close the fuel valve while the engine
is running and wait until the engine
stops.
Set the key switch to the “OFF”
position after stopping the engine.
This procedure eliminates the fuel
from the carburetor.
Avoid allowing the fuel to remain in
the carburetor over long periods, or
the passages of the carburetor may
become clogged and malfunctions
may result.
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– 11 – – 12 –
6. EASY TROUBLESHOOTING
WHEN ENGINE WILL NOT START:
■Perform the following checks before you take the engine to your YAMAHA dealer.
■If you still have trouble after completing the checks, take the engine to your nearest
YAMAHA dealer.
Is there enough compression ?
If the spark plug is loose, tighten it.
Is the spark plug wet with gasoline ?
1. Choke (close choke lever) and slowly start the engine for 2 or 3 seconds.
Remove the plug and check if its electrode is wet. If the electrode is wet, fuel is well
supplied to your engine.
2. When the electrode is dry, check to find where the fuel is restricted.
(Check the fuel intake of the carburetor and fuel strainer intake.)
3. In case the engine does not start with well supplied fuel, try using fresh fuel.
WARNING
Wipe off spilled fuel carefully before
checking the spark plug. Place spark
plug as far away from spark plug
hole as possible.
Do not hold spark plug by hand
while checking.
Is there a strong spark across
the electrode ?
1. Remove the spark plug and connect it to
the plug cap.
Turn key switch to “START” position
while grounding spark plug against
engine body.
2. Try with a new spark plug if the spark is
weak or there is no spark.
3. The ignition system is faulty if there is no
spark with a new spark plug.
Take your engine to your nearest
YAMAHA dealer.
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– 13 – – 14 –
Is your battery well charged ?
Check the battery, it may be discharged
and unable to operate the electric starter.
Consult your nearest YAMAHA dealer.
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