OWNER’S MANUAL
Read this manual carefully before operating this machine.
Generator
EF2000iSv2
LIT-19626-02-33
7PB-F8199-12
-
Read this manual carefully before operating this machine. This manual should
stay with this machine if it is sold.
AE00002
INTRODUCTION
Congratulations on your purchase of your new Yamaha.
This manual will provide you with a good basic understanding of the operation and
maintenance of this machine.
If you have any questions regarding the operation or maintenance of your machine,
please consult a Yamaha dealer.
AE00022
EF2000iSv2
OWNER’S MANUAL
© 2015 by Yamaha Motor Corporation, U.S.A.
1st Edition, September 2015
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Corporation, U.S.A.
is expressly prohibited.
Printed in China
P/N LIT-19626-02-33
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.
AE00032
WARNING
PLEASE READ AND UNDERSTAND
THIS MANUAL COMPLETELY BEFORE
OPERATING THE MACHINE.
TIP
9 Yamaha continually seeks advance-
ments in product design and quality.
Therefore, while this manual contains
the most current product information
available at the time of printing, there
may be minor discrepancies between
your machine and this manual. If
there is any question concerning this
manual, please consult a Yamaha
dealer.
9 This manual should be considered a
permanent part of this machine and
should remain with this machine
when resold.
* Product and specifications are subject to
change without notice.
AE00041
CONTENTS
SAFETY INFORMATION ....................... 1
Exhaust fumes are poisonous ............ 2
Fuel is highly flammable and
poisonous ............................................ 2
Engine and muffler may be hot ........... 2
Electric shock prevention .................... 3
Connection notes ................................ 4
Connection .......................................... 4
Extension cord notes .......................... 4
LOCATION OF IMPORTANT
LABELS ................................................. 5
DESCRIPTION ....................................... 7
Control panel ....................................... 7
CONTROL FUNCTION .......................... 8
Engine switch ...................................... 8
Recoil starter ....................................... 8
Oil warning light (Red) ........................ 8
DC protector ........................................ 9
Economy control switch ...................... 9
AC pilot light (Green) ........................ 10
Overload indicator light (Red) ........... 10
Fuel tank cap .................................... 10
Fuel tank cap air vent lever ............... 11
Fuel petcock ...................................... 11
Ground (earth) terminal .................... 11
Twin Tech (Parallel generator
operation) .......................................... 12
PREPARATION .................................... 13
Fuel ................................................... 13
Engine oil .......................................... 14
PRE-OPERATION CHECK .................. 16
Pre-operation check .......................... 16
OPERATION ........................................ 17
Starting the engine ............................ 17
Stopping the engine .......................... 19
Connection ........................................ 20
Battery charging ................................ 21
Operating range of DC power
supply ................................................ 24
Application range .............................. 25
High Altitude Operation .................... 26
PERIODIC MAINTENANCE ................ 27
Maintenance chart ............................ 27
Spark plug inspection ....................... 29
Carburetor adjustment ...................... 30
Engine oil replacement ..................... 30
Air filter .............................................. 32
Muffler screen and spark arrester ..... 33
Fuel tank filter ................................... 35
STORAGE ............................................ 36
Drain the fuel ..................................... 36
Engine ............................................... 38
TROUBLESHOOTING ......................... 39
SPECIFICATIONS ................................ 42
Dimensions ....................................... 42
Engine ............................................... 42
Generator .......................................... 42
CONSUMER INFORMATION .............. 43
Identification number records ............ 43
Machine identification ....................... 43
EXHAUST EMISSION CONTROL
SYSTEM AND COMPONENTS ........... 44
WIRING DIAGRAM .............................. 45
YAMAHA EXTENDED SERVICE
(Y.E.S.) ................................................ 46
1
7DK-036
AE00071
SAFETY INFORMATION
9 This generator is not designed for on-board use.
Do not use it while installed on the vehicle.
9 Do not modify the generator or use it with its parts
removed.
9 Do not allow children to operate the generator.
9 Be sure to carry the generator only by its carrying
handle.
1 Carrying handle
9 Do not place any obstacles on the generator.
– 1 –
7DK-001
AE00072
7DK-002
7DK-003
7DK-004
7DK-005
Exhaust fumes are poisonous
9 Using a generator indoors CAN KILL YOU IN
MINUTES. Generator exhaust contains carbon
monoxide. This is a poison you cannot see or
smell.
9 NEVER use inside a home or garage, EVEN IF
doors and windows are open.
9 Only use OUTSIDE and far away from windows,
doors, and vents.
AE00075
Fuel is highly flammable and poisonous
9 Always turn off the engine when refuelling.
9 Never refuel while smoking or in the vicinity of an
open flame.
9 Take care not to spill any fuel on the engine or
muffler when refueling.
9 Do not leave the generator inside the vehicle or in
the trunk.
9 If you swallow any fuel, inhale fuel vapor, or allow
any to get in your eye(s), see your doctor immediately. If any fuel spills on your skin or clothing,
immediately wash with soap and water and
change your clothes.
9 When operating or transporting the generator, be
sure it is kept upright. If it tilts, fuel may leak from
the carburetor or fuel tank.
AE00843
Engine and muffler may be hot
9 Place the generator in a place where pedestrians
or children are not likely to touch the machine.
– 2 –
1
7PB-011
7DK-008a
7DK-009
7DK-010
7DK-007
7DK-006
9 Avoid placing any flammable materials near the
exhaust outlet during operation.
9 In order to prevent overheating, ensure adequate
airflow by keeping the machine at least 1 m (3 ft)
from objects or other equipment.
9 Do not operate the engine with a dust cover or
other objects covering it.
9 When covering the generator, be sure to do so
only after the engine and muffler have completely
cooled down.
AE00083
Electric shock prevention
9 Never operate the engine in rain or snow.
9 Never touch the generator with wet hands or elec-
trical shock will occur.
9 Connect the Ground (earth) terminal to a ground
source. In order to prevent electrical shock, the
generator must be grounded when using an electrical device with a ground plug.
1 Ground (earth) terminal
– 3 –
7DK-012
1
2
1
2
AE00088
Connection notes
9 Avoid connecting the generator to commercial
power outlet.
9 Avoid connecting the generator in parallel with any
other generator.
1 Correct
2 Incorrect
AE00091
Connection
WARNING
Before the generator can be connected to a building’s electrical system, a licensed electrician must
install an isolation (transfer) switch in the building’s main fuse box. The switch is the connection
point for generator power and allows selection of
generator or main line power to the building. This
will prevent the generator from charging the main
power line (backfeeding) when the main power
supply has failed or has been turned off for line
repair. Backfeeding can electrocute or injure line
maintenance personnel. Also, generator and building electrical system damage can occur when normal operating power returns if unit is used without
an isolation switch.
AE00086
Extension cord notes
Extension cords should be protected by a tough flexible rubber sheath (IEC 245) or the equivalent to withstand mechanical stresses.
– 4 –
AE00062
1
2
7DK-013
3
4
5
6
7PB-014
LOCATION OF IMPORTANT LABELS
Please read the following labels carefully before operating this machine.
TIP
Maintain or replace safety and instruction labels, as
necessary.
1
– 5 –
2
Read the owner’s manual and all labels before operating.
Only operate in well-ventilated areas. Exhaust gas contains poisonous carbon monoxide.
Check for spilled fuel or fuel leaks.
Stop engine before refueling.
Do not operate near flammable materials.
Electrocution can occur if generator is used in rain, snow, or near water. Keep this unit dry at all times.
Electrocution or property damage can occur: Do not connect this generator to any building’s electrical
system unless an isolation switch has been installed by a licensed electrician. Refer to the owner’s manual.
When operating the generator:
Never place a partition or other barrier around the generator.
Do not cover the generator with a box.
Do not place any objects on the generator.
7PB-F4162-10
3
5
6
4
0
DISPLACEMENT :
– 6 –
1
2
3
4
7DK-015
DESCRIPTION
1 2 3 4 5
6
7
8
9
0
q
w
7PB-017
5
6
7
7PB-016
1 Carrying handle
2 Fuel tank cap air vent lever
3 Fuel tank cap
4 Recoil starter
5 Fuel gauge
6 Muffler
7 Oil filler cap
AE00103
Control panel
1 Oil warning light
2 AC pilot light
3 Overload indicator light
– 7 –
4 Economy control switch
(Black)
5 Engine switch (Red)
6 Fuel petcock
7 Choke knob
8 Twin Tech (parallel running
terminal)
9 AC receptacle
0 DC protector (breaker)
q Ground (earth) terminal
w DC receptacle
1
2
7DK-018
1
700-115
AE00101
CONTROL FUNCTION
AE00121
Engine switch
The engine switch controls the ignition system.
1 “7” (ON)
Ignition circuit is switched on.
The engine can be started.
2 “5” (STOP)
Ignition circuit is switched off.
The engine will not run.
Recoil starter
The recoil starter is used to start the engine.
Pull the recoil starter slowly until it is engaged, then
pull it briskly.
1 Recoil starter handle
NOTICE
9 Pull the recoil starter handle straight.
9 Return the recoil starter handle slowly.
9 Do not touch the recoil starter handle while
the generator is operating.
AE00111
Oil warning light (Red)
When the oil level falls below the lower level, the oil
warning light comes on and then the engine stops
automatically. Unless you refill with oil, the engine will
not start again.
TIP
If the engine stalls or does not start, turn the engine
switch to “7” (ON) and then pull the recoil starter. If
the oil warning light flickers for a few seconds, the
engine oil is insufficient. Add oil and restart.
– 8 –
1
2
7DK-020
DC protector
1
2
7PB-052
The DC protector turns to “3” (OFF) automatically
when electric device being connected to the generator
is operating and current above the rated flows. To use
this equipment again, turn on the DC protector by
pressing its button to
1 “I” (ON)
“I” (ON).
Direct current is output. (This is the default position.)
2 “3” (OFF)
Direct current is not output.
NOTICE
Reduce the load of the connected electric device
below the specified rated output of the generator
if the DC protector turns off. If the DC protector
turns off again, stop using the device immediately
and consult a Yamaha dealer.
AE00142
Economy control switch
1 “I” (ON)
When the economy control switch is turned to ON, the
economy control unit controls the engine speed
according to the connected load. The results are better fuel consumption and less noise.
2 “3” (OFF)
When the economy control switch is turned to OFF,
the engine runs at the rated r/min (4,500 r/min)
regardless of whether is a load connected or not.
TIP
The economy control switch must be turned to OFF
when using electric devices that require a large starting current, such as a compressor of a submersible
pump.
– 9 –
1
7DK-021
7DK-022
AC pilot light (Green)
1
7DK-048
The AC pilot light comes on when the engine starts
and produces power.
1 AC pilot light
AE01087
Overload indicator light (Red)
The overload indicator light comes on when an overload of a connected electrical device is detected, the
inverter control unit overheats, or the AC output voltage rises. Then, the AC protector will trip, stopping
power generation in order to protect the generator and
any connected electric devices. The AC pilot light
(Green) will go off and the overload indicator light
(Red) will stay on, but the engine will not stop running.
1 Overload indicator light
When the overload indicator light comes on and power
generation stops, proceed as follows:
1. Turn off any connected electric devices and stop
the engine.
2. Reduce the total wattage of connected electric
devices within the rated output.
3. Check for blockages in the cooling air inlet and
around the control unit. If any blockages are
found, remove.
4. After checking, restart the engine.
TIP
The overload indicator light may come on for a few
seconds at first when using electric devices that
require a large starting current, such as a compressor
or a submersible pump. However, this is not a malfunction.
Fuel tank cap
Remove the fuel tank cap by turning it counterclockwise.
– 10 –
1
2
7DK-023
2
1
7DK-024
1
7PB-011
Fuel tank cap air vent lever
The fuel tank cap is provided with an air vent lever to
stop fuel flow.
The air vent lever must be turned to ON. This will allow
fuel to flow to the carburetor and the engine to run.
When the engine is not in use, turn the air vent lever
to OFF to stop fuel flow.
1 Air vent lever
2 Fuel tank cap
Fuel petcock
The fuel cock supplies fuel from the fuel tank to the
carburetor.
The fuel cock has two positions.
1 ON
With the knob in this position, fuel flows to the carburetor. Normal using is done with the knob in this position.
2 OFF
With the knob in this position, fuel will not flow. Always
turn the knob to this position when the engine is not
running.
Ground (earth) terminal
Ground (earth) terminal connects the earth line for
prevention of electric shock.
When the electric device is grounded, be sure to
ground the generator also.
1 Ground (earth) terminal
– 11 –
7DK-042a
Twin Tech (Parallel generator operation)
Two EF2000iSv2 generators can be operated in parallel to increase the rated output to 3.0 kVA and the
rated current to 25.0 A. For parallel operation, use
only a special parallel cable set (optional equipment)
approved by Yamaha; contact your Yamaha dealer for
the proper parallel cable set.
The handling, operation procedure and the notes on
usage are described in the parallel cable set owner’s
manual included in the parallel cable set. Consult a
Yamaha dealer for this parallel cable set.
TIP
The EF2000iSv2 may be connected in parallel with an
earlier model Yamaha EF2000iS. However, a second
Yamaha EF2000iSv2 is recommended to use the full
capabilities of this model.
NOTICE
To avoid severe damage to the generators or other
equipment:
9 Never attempt to parallel Yamaha generators of
different outputs or a Yamaha generator with
any other brand.
9 Connect the parallel cable set to the genera-
tors before starting the generators and turn off
the generators before disconnecting them.
Never connect the parallel cable set to running
generators or disconnect them from the generators during parallel operation.
9 Do not use parallel cable set with only one
generator or with just one generator running.
9 During parallel operation, do not use the AC
receptacles on the generator control panel.
9 Never allow the parallel cable set to hang
close to the exhaust side of the generator.
Heat from the exhaust could damage the parallel cables.
9 Do not attempt to modify the parallel cable set
in any way, such as to try to use three generators.
– 12 –
3
4
7DK-037
7DK-091
1
2
7DK-028
707-095
PREPARATION
WARNING
AE00856
Fuel
9 Fuel is highly flammable and poisonous.
Check “SAFETY INFORMATION” (See page 2)
carefully before filling.
9 Do not overfill the fuel tank, otherwise it may
overflow when the fuel warms up and expands.
9 After fill the fuel, make sure the fuel tank cap
is tightened securely.
1. Stop the engine.
2. Place the generator on a level surface.
3. Remove the fuel tank cap.
4. Check the fuel level.
5. If low, fill the tank with fuel.
NOTICE
9 Immediately wipe off spilled fuel with a clean,
dry, soft cloth, since fuel may deteriorate
painted surfaces or plastic parts.
9 Use only unleaded gasoline. The use of leaded
gasoline will cause severe damage to internal
engine parts.
Make sure there is sufficient fuel in the tank.
When refueling, be sure to fill the tank up to the
“LEVEL” (red) mark of the fuel tank filter.
1 Fuel level
2 Fuel tank filter
3 Fuel level gauge
4 “LEVEL” (red) mark
– 13 –
2
7PB-031
1
7PB-030
5
6
7DK-093
Recommended fuel:
Unleaded gasoline
Fuel tank capacity:
Total:
4.2 L (1.11 US gal, 0.92 Imp gal)
5
6
“F”
“E”
Full
Empty
Your Yamaha engine has been designed to use regular unleaded gasoline with a pump octane number
((R + M)/2) of 86 or higher, or research octane number of 91 or higher.
AE00222
Engine oil
NOTICE
The generator was shipped from the factory without engine oil. Do not start the engine for the first
time until the oil level has been checked and oil
added if necessary.
1. Place the generator on a level surface.
2. Remove the panel.
1 Panel
3. Remove the oil filler cap.
2 Oil filler cap
– 14 –
7PB-033
700-119
3
0˚C
å
YAMALUBE 4 (10W-40)
∂
SAE 10Wç SAE #20∫ SAE #30
32˚F
25˚C
80˚F
4. Fill the specified amount of the recommended
engine oil, and then install and tighten the oil filler
cap.
NOTICE
9 Do not tilt the generator when adding engine
oil. This could result in overfilling and damage
to the engine.
9 Be sure no foreign material enters the crank-
case.
3 Correct level
Recommended engine oil:
å YAMALUBE 4 (10W-40),
SAE 10W-30 or 10W-40
∫ SAE #30
ç SAE #20
∂ SAE 10W
Recommended engine oil grade:
API Service SE type or higher
Engine oil quantity:
0.4 L (0.42 US qt, 0.35 Imp qt)
5. Install the panel.
– 15 –
AE00845
WARNING
PRE-OPERATION CHECK
If any item in the Pre-operation check is not working properly, have it inspected and repaired before
operating the generator.
The condition of a generator is the owner’s responsibility. Vital components can start to deteriorate quickly
and unexpectedly, even if the generator is unused.
TIP
Pre-operation checks should be made each time the
generator is used.
Pre-operation check
Fuel (See page 13)
9 Check fuel level in fuel tank.
9 Refuel if necessary.
Fuel line
9 Check fuel hose for crack or damage.
9 Replace if necessary.
Engine oil (See page 14)
9 Check oil level in engine.
9 If necessary, add recommended oil to specified
level.
9 Check generator for oil leakage.
The point where abnormality was recognized by
use
9 Check operation.
9 If necessary, consult a Yamaha dealer.
– 16 –
7PB-047
3
7DK-038
AE00846
WARNING
1
7DK-034
2
7DK-035
OPERATION
9 Never operate the engine in a closed area or it
may cause unconsciousness and death within
a short time. Operate the engine in a well ventilated area.
9 Before starting the engine, do not connect any
electric devices.
9 Clean dusts, dirt or water off the receptacle
before use.
NOTICE
The generator was shipped from the factory without engine oil. Do not start the engine for the first
time until the oil level has been checked and oil
added if necessary.
Starting the engine
1. Turn the economy control switch (Black) to “3”
(OFF).
1 “3” (OFF)
2. While holding the fuel tank cap so that it will not
move, turn the air vent lever to ON.
2 ON
3. Turn the fuel petcock to ON.
3 ON
– 17 –
7DK-041
5
7DK-040
4
7DK-039
4. Turn the engine switch (Red) to “7” (ON).
WARNING
4 “7” (ON)
5. Pull the choke knob fully out.
5 Choke knob
TIP
The choke is not required to start a warm engine.
Push the choke knob in to the original position.
6. Pull the recoil starter slowly until it is engaged,
then pull it briskly.
Be careful when using recoil starter. In rare cases,
the recoil starter handle can be drawn back quickly by the engine kickback.
TIP
Grasp the carrying handle firmly to prevent the generator from falling over when pulling the recoil starter.
– 18 –
1
7DK-034
7PB-047
2
7DK-044
6
7PB-042
7. After the engine starts, warm up the engine until
the engine does not stop when the choke knob is
returned to the original position.
6 Original position
TIP
When starting the engine, with the economy control
switch ON, and there is no load on the generator:
9 in ambient temperature below 0 °C (32 °F), the
engine will run at the rated r/min (4,500 r/min) for
5 minutes to warm up the engine.
9 in ambient temperature below 5 °C (41 °F), the
engine will run at the 4,500 r/min for 3 minutes to
warm up the engine.
The economy control unit operates normally after the
above time period, while the economy control switch is
ON.
AE01025
Stopping the engine
1. Turn off any electric devices.
2. Turn the economy control switch (Black) to “3”
(OFF).
1 “3” (OFF)
3. Disconnect any electric devices.
4. Turn the engine switch (Red) to “5” (STOP).
2 “5” (STOP)
– 19 –
WARNING
3
7DK-045
4
7DK-092
5. Turn the fuel petcock to OFF.
3 OFF
6. Turn the fuel tank cap air vent lever to OFF after
the engine has completely cooled down.
4 OFF
AE00839
Connection
Alternating Current (AC)
Be sure any electric devices are turned off before
plugging them in.
NOTICE
9 Be sure all electric devices including the lines
and plug connections are in good condition
before connection to the generator.
9 Be sure the total load is within generator rated
output.
9 Be sure the receptacle load current is within
receptacle rated current.
TIP
Make sure to ground (earth) the generator.
When the electric device is grounded, be sure to
ground the generator also.
– 20 –
2
7DK-049
1
7DK-048
1. Start the engine.
7PB-043
2. Plug in to AC receptacle.
3. Make sure the AC pilot light is on.
1 AC pilot light
4. Turn the economy control switch to “I” (ON).
2 “I” (ON)
5. Turn on any electric devises.
TIP
The economy control switch must be turned to “3”
(OFF) to increase engine speed to rated r/min.
Battery charging
NOTICE
Do not connect a VRLA (Valve Regulated Lead
Acid) battery. To charge a VRLA battery, a special
(constant-voltage) battery charger is required.
TIP
9 The generator DC rated voltage is 12 V.
9 Start the engine first, and then connect the gener-
ator to the battery for charging.
9 Before starting to charge the battery, make sure
that the DC protector is turned on.
– 21 –
762-040
1
2
6v 6v
12v
762-041
1. Start the engine.
2. Connect the red battery charger lead to the positive (+) battery terminal.
1 Red battery charger lead
2 Black battery charger lead
3. Connect the black battery charger lead to the
negative (–) battery terminal.
4. Turn the economy control switch “3” (OFF) to
start battery charging.
NOTICE
9 Be sure the economy control switch is turned
off while charging the battery.
9 Be sure to connect the red battery charger
lead to the positive (+) battery terminal, and
connect the black lead to the negative (–) battery terminal. Do not reverse these positions.
9 Connect the battery charger leads to the bat-
tery terminals securely so that they are not
disconnected due to engine vibration or other
disturbances.
9 Charge the battery in the correct procedure by
following instructions in the owner’s manual
for the battery.
9 The DC protector turns
cally if current above the rated flows during
battery charging.
To restart charging the battery, turn the DC
protector on by pressing its button to
(ON). If the DC protector turns off again, stop
charging the battery immediately and consult
a Yamaha dealer.
“3” (OFF) automati-
“I”
– 22 –
WARNING
3 “I” (ON)
3
4
7PB-052
4 “3” (OFF)
TIP
9 Follow instructions in the owner’s manual for the
battery to determine the end of battery charging.
9 Measure the specific gravity of electrolyte to
determine if the battery is fully charged. At full
charge, the electrolyte specific gravity is between
1.26 and 1.28.
9 It is advisable to check the specific gravity of the
electrolyte at least once every hour to prevent
overcharging the battery.
Never smoke or make and break connections at
the battery while charging. Sparks may ignite the
battery gas.
Battery electrolyte is poisonous and dangerous,
causing severe burns, etc. contains sulfuric (sulphuric) acid. Avoid contact with skin, eyes or
clothing.
Antidote:
EXTERNAL-Flush with water.
INTERNAL-Drink large quantities of water or milk.
Follow with milk of magnesia, beaten egg or vegetable oil. Call physician immediately.
EYES: Flush with water for 15 minutes and get
prompt medical attention. Batteries produce explosive gases. Keep sparks, flame, cigarettes, etc.,
away. Ventilate when charging or using in closed
space. Always cover eyes when working near batteries. KEEP OUT OF REACH OF CHILDREN.
– 23 –
Operating range of DC power supply
(exclusively for charging 12 V battery)
This power source is designed to charge batteries up
to 40 Ah that are half-discharged. Do not charge batteries of a higher capacity than 40 Ah.
12 V battery
The time required for recharging a battery varies
depending on the discharge level of the battery. When
the specific gravity of the battery reaches 1.26 to 1.28,
charging is complete. When charging, check the battery’s specific gravity once an hour.
The average time for charging a half-discharged 40 Ah
battery is approximately 5 hours. Be sure to check the
battery fluid level before charging.
NOTICE
9 Do not connect any load to the battery or use
the engine starter motor while charging. This
causes high current to flow through the generator which will burn out the coil.
9 Do not connect a VRLA (Valve Regulated Lead
Acid) battery. To charge a VRLA battery, a special (constant-voltage) battery charger is
required.
– 24 –
AE00812
1
7DK-021
Application range
When using the generator, make sure the total load is within rated output of a generator. Otherwise, generator damage may occur.
AC
Power factor 1 0.8–0.95
EF2000iSv2 –1,600 W –1,280 W –544 W
0.4–0.75
(Efficiency 0.85)
TIP
9 “–” means below.
9 Application wattage indicates when each device is
used by itself.
9 The simultaneous usage of AC and DC power is
possible but total wattage should not exceed the
rated output.
EX:
Generator rated output 1,600 VA
Frequency Power factor
AC
DC —
1.0 –1,500 W
0.8 –1,180 W
9 The overload indicator light comes on when total
wattage exceeds the application range. (See page
10 for more details.)
DC
Rated voltage
12 V
Rated current
8 A
96 W
(12 V/8 A)
1 Overload indicator light
NOTICE
9 Do not overload. The total load of all electrical appliances must not exceed
the supply range of the generator. Overloading will damage the generator.
9 When supplying precision equipment, electronic controllers, PCs, electronic
computers, microcomputer-based equipment or battery chargers, keep the
generator a sufficient distance away to prevent electrical interference from
the engine. Also ensure that electrical noise from the engine does not interfere with any other electrical devices located near the generator.
9 If the generator is to supply medical equipment, advice should first be
obtained from the manufacturer, a medical professional or hospital.
9 Some electrical appliances or general-purpose electric motors have high starting
currents, and cannot therefore be used, even if they lie within the supply ranges
given in the above table. Consult the equipment manufacturer for further advice.
– 25 –
High Altitude Operation
This engine may require a high altitude carburetor kit to ensure correct engine operation at altitudes above 4000 ft. (1219 meters). If you operate your engine at altitudes
above 4000 ft. (1219 meters) consistently, have your local Yamaha dealer perform the
necessary carburetor modification. This engine should be operated in its original configuration below 4000 ft. (1219 meters) as damage may occur if high altitude carburetor kit
is installed and operated below 4000 ft. (1219 meters).
– 26 –
AE00401
WARNING
WARNING
PERIODIC MAINTENANCE
Safety is an obligation of the owner. Periodic inspection, adjustment and lubrication will
keep your generator in the safest and most efficient condition possible. The most important points of generator inspection, adjustment, and lubrication are explained on the following pages.
If you are not familiar with maintenance work, have a Yamaha dealer do it for you.
AE00403
Maintenance chart
Stop the engine before starting maintenance work.
NOTICE
Use only Yamaha specified genuine parts for replacement. Ask an authorized
Yamaha dealer for further information.
Item Routine
Spark plug
Fuel • Check fuel level and leakage.
Fuel hose
Engine oil
Air filter element
Muffler screen
Spark arrester
Fuel tank filter • Clean and replace if necessary.
• Check condition.
• Clean and replace if necessary.
• Check fuel hose for cracks or damage.
• Replace if necessary.
• Check oil level in engine.
• Replace.
• Check condition.
• Clean.
• Check condition.
• Clean and replace if necessary.
• Check condition.
• Clean and replace if necessary.
– 27 –
Pre-
operation
check
2
2
2
Every
6 months
or 100 Hrs
2
(*1)
2
(*2)
2
2
2
12 months
or 300 Hrs
2
Item Routine
Pre-
operation
check
Every
6 months
or 100 Hrs
12 months
or 300 Hrs
Crankcase breather
hose
Cylinder head
Valve clearance • Check and adjust valve clearance.
Idle speed • Check and adjust idle speed.
Recoil starter • Check recoil starter for damage.
Fittings / fasteners
The point where abnormality was recognized by use.
....
*1
Initial replacement of the engine oil is after one month or 20 hours of operation.
....
*2
The air filter element needs to be cleaned more frequently when using in unusually wet or
dusty areas.
.....
★
Since these items require special tools, data and technical skills, have a Yamaha dealer perform the service.
• Check breather hose for cracks or
damage.
• Replace if necessary.
• Decarbonize cylinder head.
• More frequently if necessary.
• Check all fittings and fasteners.
• Correct if necessary.
After every 500 Hrs.
2
2
★
★
★
★
– 28 –
4
3
7DK-053
5
6
7DK-054
a
760-001a
Spark plug inspection
1
2
7PB-030
The spark plug is an important engine component,
which should be checked periodically.
1. Remove the screws, and then remove the cover.
1 Screw
2 Cover
2. Remove the spark plug cap and cap, and insert
the tool through the hole from the outside of the
cover.
3 Spark plug cap
4 Cap
3. Insert the handlebar into the tool and turn it counterclockwise to remove the spark plug.
5 Tool
6 Handlebar
4. Check for discoloration and remove the carbon.
The porcelain insulator around the center elec-
trode of spark plug should be a medium-to-light
tan color.
5. Check the spark plug type and gap.
a Spark plug gap
Standard spark plug:
BPR6HS (NGK)
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
TIP
The spark plug gap should be measured with a wire
thickness gauge and, if necessary, adjusted to specification.
– 29 –
6. Install the spark plug.
1
2
7PB-030
WARNING
Spark plug tightening torque:
20 Nm (2.0 m·kgf, 14 ft·lbf)
TIP
If a torque wrench is not available when installing a
spark plug, a good estimate of the correct torque is
1/4–1/2 turn past finger tight. However, the spark plug
should be tightened to the specified torque as soon as
possible.
7. Install the spark plug cap and cap.
8. Install the cover and tighten the screws.
AE00431
Carburetor adjustment
The carburetor is a vital part of the engine. Adjusting
should be left to a Yamaha dealer with the professional
knowledge, specialized data, and equipment to do so
properly.
AE00412
Engine oil replacement
Avoid draining the engine oil immediately after
stopping the engine. The oil is hot and should be
handled with care to avoid burns.
1. Place the generator on a level surface and warm
up the engine for several minutes.
Then stop the engine and turn the fuel petcock,
fuel tank cap air vent lever to OFF.
2. Remove the screws and then remove the cover.
1 Screw
2 Cover
– 30 –
7DK-031
3
4
7DK-055
7DK-033
700-006a
5
0˚C
å
YAMALUBE 4 (10W-40)
∂
SAE 10Wç SAE #20∫ SAE #30
32˚F
25˚C
80˚F
3. Remove the oil filler cap.
3 Oil filler cap
4 O-ring
4. Place an oil pan under the engine. Tilt the generator to drain the oil completely.
5. Check the oil filler cap and O-ring. Replace them
if damaged.
6. Place the generator on a level surface.
7. Add engine oil to the correct level.
NOTICE
9 Do not tilt the generator when adding engine
oil. This could result in overfilling and damage
to the engine.
9 Be sure no foreign material enters the crank-
case.
5 Correct level
Recommended engine oil:
å YAMALUBE 4 (10W-40),
SAE 10W-30 or 10W-40
∫
SAE #30
ç
SAE #20
∂
SAE 10W
Recommended engine oil grade:
API Service SE type or higher
Engine oil quantity:
0.4 L (0.42 US qt, 0.35 Imp qt)
8. Wipe the cover clean, and wipe up any spilled oil.
– 31 –
1
2
7PB-030
3
4
7DK-061
WARNING
7DK-062
7
5
6
9. Install the O-ring and the oil filler cap.
6
7
7PB-030
10. Install the cover and tighten the screws.
6 Screw
7 Cover
AE01084
Air filter
1. Remove the screws, and then remove the cover.
1 Screw
2 Cover
2. Remove the screw and then remove the air filter
case cover.
3 Screw
4 Air filter case cover
3. Remove the foam element.
5 Screw
6 Air filter case cover
7 Foam element
4. Wash the foam element in solvent and dry it.
Never use solvent while smoking or in the vicinity
of an open flame.
5. Oil the foam element and squeeze out excess oil.
The foam element should be wet but not dripping.
NOTICE
Do not wring out the foam element when squeezing it.
This could cause it to tear.
– 32 –
7DK-026
1
2
1
7PB-066
WARNING
Recommended oil:
Foam-air-filter oil
or
engine oil (See page 15)
6. Insert the foam element into the air filter case.
NOTICE
The engine should never run without the foam element; excessive piston and cylinder wear may
result.
TIP
Be sure the foam element sealing surface matches
the air filter so there is no air leak.
7. Install the air filter case cover in its original position and tighten the screw.
8. Install the cover and tighten the screws.
AE01075
Muffler screen and spark arrester
The engine and muffler will be very hot after the
engine has been run.
Avoid touching the engine and muffler while they
are still hot with any part of your body or clothing
during inspection or repair.
1. Remove the muffler cover screws, and then
remove the muffler cover.
1 Muffler cover screw
2 Muffler cover
– 33 –
8
7
7DK-065a
711-075
3
4
5
7DK-063
7DK-064
6
7DK-065
2. Loosen the muffler cap bolt and then remove the
muffler cap and muffler screen.
3 Muffler cap bolt
4 Muffler cap
5 Muffler screen
3. Use a flathead screw driver to pry the spark
arrester out from the muffler.
4. Remove the spark arrester.
6 Spark arrester
5. Remove the carbon deposits on the muffler cap,
muffler screen and spark arrester using a wire
brush.
NOTICE
When cleaning, use the wire brush lightly to avoid
damaging or scratching of the muffler cap, muffler
screen and spark arrester.
6. Check the muffler screen and spark arrester.
Replace them if damaged.
7. Install the spark arrester.
TIP
Align the spark arrester projection to the hole in the
muffler pipe.
7 Spark arrester projection
8 Hole
– 34 –
7DK-068
8. Install the muffler screen and muffler cap, and
2
1
7PB-069
WARNING
WARNING
then tighten the muffler cap bolt.
Muffler cap bolt tightening torque:
3.5 Nm (0.35 m·kgf, 2.5 ft·lbf)
9. Install the muffler cover and tighten the muffler
cover screws.
AE00471
Fuel tank filter
Never use gasoline while smoking or in the vicinity of an open flame.
1. Remove the fuel tank cap and fuel tank filter.
1 Fuel tank cap
2 Fuel tank filter
2. Clean the fuel tank filter with gasoline.
Replace it if damaged.
3. Wipe the fuel tank filter and insert it.
4. Install the fuel tank cap.
Be sure the fuel tank cap is tightened securely.
– 35 –
AE00601
WARNING
1
7DK-04427DK-039
STORAGE
Long term storage of your machine will require some
preventive procedures to guard against deterioration.
AE01056
Drain the fuel
1. Turn the engine switch to “5” (STOP).
1 “5” (STOP)
2. Remove the fuel tank cap and fuel tank filter.
Extract the fuel from the fuel tank into an
approved gasoline container using a commercially
available hand siphon. Then, install the fuel tank
filter and fuel tank cap.
Fuel is highly flammable and poisonous. Check
“SAFETY INFORMATION” (See page 2) carefully.
NOTICE
Immediately wipe off spilled fuel with a clean, dry,
soft cloth, since fuel may deteriorate painted surfaces or plastic parts.
3. Turn the engine switch to “7” (ON).
2 “7” (ON)
– 36 –
4. Turn the fuel tank cap air vent lever and fuel pet-
3
7DK-035
4
7DK-038
5
6
7PB-030
7
7DK-071
cock to ON.
3 ON
4 ON
5. Start the engine and leave it run until it stops.
The engine stops in approximately 20 minutes
time by running out of fuel.
TIP
9 Do not connect with any electrical devices.
(unloaded operation)
9 Duration of the running engine depends on the
amount of the fuel left in the tank.
6. Remove the screws, and then remove the cover.
5 Screw
6 Cover
7. Drain the fuel remaining in the carburetor into an
approved container by loosening the drain screw
on the carburetor float chamber.
7 Drain screw
8. Tighten the drain screw.
9. Turn the engine switch to “5” (STOP).
10. Turn the fuel petcock to OFF.
11. Install the cover and tighten the screws.
12. Turn the fuel tank cap air vent lever to OFF after
the engine has completely cooled down.
13. Tighten further if any screws, bolts and nuts are
loose.
14. Store the generator in a dry, well-ventilated place,
with the cover placed over it.
– 37 –
Engine
7DK-072
Perform the following steps to protect the cylinder, piston ring, etc. from corrosion.
1. Remove the spark plug, pour about one tablespoon of engine oil (See page 15) into the spark
plug hole and install the spark plug. Recoil start
the engine by turning over several times (with ignition off) to coat the cylinder walls with oil.
2. Pull the recoil starter until you feel compression.
Then stop pulling. (This prevents the cylinder and
valves from rusting).
3. Clean exterior of the generator and apply a rust
inhibitor.
4. Store the generator in a dry, well-ventilated place,
with the cover placed over it.
5. The generator must remain in a vertical position
when stored, carried or operated.
– 38 –
7DK-091
1
7DK-035
2
7DK-038
700-006
AE00512
TROUBLESHOOTING
Engine won’t start
1. Fuel systems
No fuel supplied to combustion chamber.
2 No fuel in tank .... Supply fuel.
2 Fuel in tank .... Fuel tank cap air vent lever and
fuel petcock to ON.
1 ON
2 ON
2 Clogged fuel line .... Clean fuel line.
2 Clogged carburetor .... Clean carburetor.
2. Engine oil system
Insufficient
2 Oil level is low .... Add engine oil.
– 39 –
1
2
7PB-052
7DK-041
791-001d
3. Electrical systems
3
7DK-039
2 Engine switch to “7” (ON) and pull the recoil
starter.
3 “7” (ON)
Poor spark
2 Spark plug dirty with carbon or wet .... Remove
carbon or wipe spark plug dry.
2 Faulty ignition system .... Consult a Yamaha deal-
er.
AE00515
Generator won’t produce power
2 Safety device (DC protector) to OFF ···· Press the
DC protector to ON.
1 “I” (ON)
2 “3” (OFF)
2 Safety device (AC) to OFF .... Stop the engine,
then restart.
– 40 –
AE00515
WARNING
A ENGINE DOES NOT START
B
Turn the engine switch to “7” (ON), then
pull the recoil starter and check if the oil
warning light flickers.
C Does not flicker D Flickers
H
Pull the recoil starter and check the
spark plug for spark strength.
(See “WARNING”)
E Check engine oil level.
F OK G Level low
Consult a
Yamaha dealer.
Add engine oil.
9 To prevent FIRE HAZARDS be
sure fuel is not present in the
spark plug area.
9 To prevent FIRE HAZARDS be
sure to place the spark plug as far
away as possible from the spark
plug hole and carburetor area.
9 To prevent ELECTRIC SHOCK do
not hold spark plug lead with
hand while testing.
I OK J Does not spark
Check the following.
N
9 Fuel line clogging
9 Ai r f i lte r el e m ent
clogging.
O Clogged
P OK
– 41 –
K Check the spark plug.
9 Type: BPR6HS
9 Gap: 0.6–0.7 mm (0.024–0.028 in)
L Incorrect M OK
Replace or
adjust gap.
Q
Clean
Clean the spark
plug.
R OK
or
replace.
S Engine does not start.
T Consult a Yamaha dealer.
AE00701
SPECIFICATIONS
AE00702
Dimensions
Unit EF2000iSv2
Overall length mm (in) 490 (19.3)
Overall width mm (in) 280 (11.0)
Overall height mm (in) 445 (17.5)
Dry weight kg (lb) 20 (44)
AE00704
Engine
Unit EF2000iSv2
Type
Cylinder arrangement
Displacement
Bore × Stroke
Operation hours
3
cm
mm (in) 48.6 × 43.0 (1.91 × 1.69)
Hr 4.2–10.5 (rated load–1/4 load)
Fuel
Fuel tank capacity
Engine oil quantity
L (US gal, Imp gal) 4.2 (1.11, 0.92)
L (US qt, Imp qt) 0.4 (0.42, 0.35)
Ignition system
Spark plug: Type
Gap
Noise level*
mm (in) 0.6–0.7 (0.024–0.028)
WA 89
dB / L
dB (A) / 7 m 51.5–61
* : Noise level is measured when the economy control switch is turned to ON.
L
WA shows the sound power level under the ISO3744 satisfied test conditions.
The noise level in “dB (A) / 7 m” is the arithmetic mean value in four directions measured 7
meters away from each side of the generator.
The noise level may vary in different environments.
AE00707
Generator
Unit EF2000iSv2
AC Output
Rated voltage V 120
Rated frequency Hz 60
Rated current A 13.3
Rated output kVA 1.6
Safety device: Type Electronic
DC Output
Rated voltage V 12
Rated current A 8
Safety device: Type DC protector
Air cooled 4-stroke gasoline OHV
Inclined, 1 cylinder
79
Unleaded gasoline
CDI
BPR6HS (NGK)
– 42 –
7PB-F4163-00
Serial NO.
7PB-
7PB-073
1
CONSUMER INFORMATION
PRI-I.D. NUMBER:
MODEL
PRI-I.D.
CODE
SERIAL No.
AE00012
Identification number records
Record your Primary I.D., and serial numbers in the spaces provided, to assist you
in ordering spare parts from a Yamaha
dealer.
Also record and keep these I.D. numbers
in a separate place in case your machine
is stolen.
AE00011
Machine identification
The machine serial number is stamped in
the location as shown.
1 Machine serial number
TIP
The first three digits of these numbers are
for model identification; the remaining digits are the unit production number. Keep a
record of these numbers for reference
when ordering parts from a Yamaha dealer.
– 43 –
AE00789
EXHAUST EMISSION CONTROL SYSTEM AND COMPONENTS
Item Acronym
9 CARB. ASSY., LH. & JT., .......................CARB (Carburetor)
CARBURETOR2
9 T.C.I. MAGNETO ASSY. & ..................... EI (Electronic Ignition)
PLUG, SPARK
9 CRANKCASE1 & HEAD, ....................... PCV (Positive Crankcase
CYLINDER1 Ventilation)
9 AIR FILTER ASSY. . ................................ ACL (Air Cleaner)
9 MUFF., 2, CAP, NET, WIRE2 &
ARRESTER, SPARK
The above items and the corresponding acronyms are provided in accordance with U.S.
EPA REGULATIONS FOR NEW NONROAD SPARK-IGNITION NONHANDHELD
ENGINES and the CALIFORNIA REGULATIONS FOR 1995 AND LATER SMALL OFFROAD ENGINES.
The acronyms conform to the latest version of the SAE’s recommended practice document J1930, “Diagnostic Acronyms, Terms, and Definitions For Electrical/Electronic
System”.
It is recommended that these items be serviced by a Yamaha dealer.
– 44 –
W
Br
R
R
Br
R
Br
R
Br
R
Br
R
Br
Br
B
B
B
B
B
B B
B
B
B
Y
Y
O
O
O
Y
Br
G
R
G
Br
R
Y
Y
Y
R
R R
R
R
L
L
L
L
L
L
L
L
L
G
G
Y
Y
O
O
O
O
O
OLO
O
B/W
B/W
R/W
Br
BrBr
R/W R/W R/W
G/Y
G/Y
O
G/Y
2
1
3
u
o
i
p
4
5
6
7
8
9
q
0
e
w
r
y
t
7DK-10
AE00751
WIRING DIAGRAM
1 Sub coil
2 DC coil
3 Main coil
4 DC rectifier
5 DC protector (breaker)
6 Twin Tech (parallel
running terminal)
7 DC receptacle
8 AC pilot light
9 AC receptacle
0 Economy control switch
q Overload indicator light
w Engine switch
e Oil warning light
r Ground (earth) terminal
t Control unit
y CDI unit/Ignition coil
u Stepping motor
i Spark plug
o CDI magneto
p Oil level gauge
– 45 –
Color code
B Black
Br Brown
G Green
L Blue
O Orange
R Red
W White
Y Yellow
B/W Black/White
G/Y Green/Yellow
R/W Red/White
YAMAHA EXTENDED SERVICE (Y.E.S.)
Keep your Yamaha Generator protected even after your warranty expires with genuine Yamaha Extended
Service (Y.E.S.).
9 Y.E.S. is designed and administered by Yamaha Motor Corporation to provide maximum owner satis-
faction. You get uninterrupted factory-backed coverage for extra peace of mind.
9 Y.E.S. is flexible. You can choose the plan that’s right for you: 12 months, 24 months or 36 months
coverage.
9 Y.E.S. is administered by the same Yamaha people that handle your warranty - and it shows in the
comprehensive coverage benefits. There are no hour limitations and Y.E.S. covers manufacturing
defects just like your warranty. See a sample contract at your Yamaha dealer and see how comforting uninterrupted factory backed protection can be.
9 There are no “out-of-pocket” expenses for covered repairs. Yamaha will never ask you to pay a
deductible.
9 Nationwide coverage. Y.E.S. coverage is honored at any authorized Yamaha Outdoor Power
Equipment Service dealer.
9 Y.E.S. coverage is transferable to a new owner if you sell or trade-in. That can make you Yamaha
much more valuable.
This excellent Y.E.S. plan coverage is only available to Yamaha owners like you, and only while your
Yamaha is still within the Yamaha Limited Warranty period. So visit your authorized Yamaha dealer to get
all the facts. He can show you how easy it is to protect your investment with Yamaha Extended Service.
Special note:
If visiting your dealer isn’t convenient, contact Yamaha with your Primary ID number (your frame number).
We’ll be happy to help you get the Y.E.S. coverage you need.
– 46 –
Yamaha Service Marketing
P.O. Box 6555
Cypress, CA 90630
1-866-YES-EXTD
(1-866-937-3983)
PRINTED IN CHINA
2015.10 !
(E)
U.S.A.
,
(Example) EF2000IS
(Example) 7DK - 0000000
-
-
Register Your Generator at
Generator Warranty Registration
Or complete the card below and Mail
www.yamahawarrantyregistration.com
www.yamahawarrantyregistration.com
( )
Owner’s Name
Address
City State Zip
days of purchase:
If you prefer, you can complete and mail this card. Be sure to attach proper postage.
To begin your 3 year warranty coverage, please register online within 30
Phone Number
Yamaha Generator Model Name:
E-mail address
Month Day Year
Yamaha Generator Primary I.D. Serial Number:
(See “Machine Identication” in your Owner’s Manual for location of this number)
(The engine stamp is not the valid Primary ID Serial Number)
Date Purchased / / Selling Dealer Name
REGISTER ONLINE OR MAIL THIS CARD TO YAMAHA MOTOR CORPORATION
Please register online or complete and mail this form. It will help ensure that Yamaha has accurately registered your purchase for
warranty.9 Manufacturers are required to maintain a complete up-to-date list of all rst purchasers of products in the event of a safety-related
defect or recall.
9
CYPRESS, CA 90630
ATTN: WARRANTY DEPARTMENT
YAMAHA MOTOR CORPORATION U.S.A.
P.O. BOX 6555
STAMP
HERE
PLACE
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