Yamaha EF1600, EF2600, YG2600 User manual

Generator
LIT-19626-01-14 7NJ-28199-12
PRINTED ON RECYCLED PAPER
PRINTED IN JAPAN
03 908 – 0.4 ×1 !
EF1600
EF2600
YG2600
OWNER’S MANUAL
7NJ-9-12 Hyoshi 10/27/03 9:03 AM Page 1

7NJ-9-12 Hyoshi 10/27/03 9:03 AM Page 2

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.
PRI-I.D. NUMBER AE00012
IDENTIFICATION NUMBER RECORDS
Record your Primary I.D., and serial num-
bers 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.
NOTE:
The first three digits of these numbers are
for model identification; the remaining dig-
its are the unit production number. Keep a
record of these numbers for reference
when ordering parts from a Yamaha deal-
er.
EF1600/EF2600/YG2600
OWNER’S MANUAL
© 2003 by Yamaha Motor Corporation, U.S.A.
1st Edition, August 2003
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Corporation, U.S.A.
is expressly prohibited.
Printed in Japan.
P/N LIT-19626-01-14
790-025a
MODEL
PRI-I.D.
CODE SERIAL No.
790-062
AE00022
7NJ-9-12A 10/27/03 10:20 AM Page a

851-005
AE00032
w
PLEASE READ AND UNDERSTAND
THIS MANUAL COMPLETELY BEFORE
OPERATING THE MACHINE.
Particularly important information is distin-
guished in this manual by the following
notations.
-
The Safety Alert Symbol means ATTEN-
TION! BECOME ALERT! YOUR SAFETY
IS INVOLVED!
w
Failure to follow WARNING instructions
could result in severe injury or death to
the engine operator, a bystander, or a
person inspecting or repairing the engine.
cC
A CAUTION indicates special precautions
that must be taken to avoid damage to the
engine.
NOTE:
A NOTE provides key information to make
procedures easier or clearer.
NOTE:
9Yamaha 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 engine and this manual. If there
is any question concerning this manu-
al, please consult your Yamaha deal-
er.
9This manual should be considered a
permanent part of this engine and
should remain with this engine when
resold.
7NJ-9-12A 10/27/03 10:20 AM Page b

AE00041
CONTENTS
LIMITED WARRANTY (EF- AND
EDL-SERIES) ........................................1
LIMITED WARRANTY (EC- AND
YG-SERIES) ..........................................2
LOCATION OF IMPORTANT
LABELS.................................................4
SAFETY INFORMATION.......................5
EXHAUST FUMES ARE
POISONOUS ......................................5
FUEL IS HIGHLY FLAMMABLE AND
POISONOUS ......................................5
ENGINE AND MUFFLER MAY
BE HOT ..............................................5
ELECTRIC SHOCK PREVENTION....6
CONNECTION NOTES ......................7
CONNECTION....................................7
EXTENSION CORD NOTES ..............7
CONTROL FUNCTION..........................8
DESCRIPTION ...................................8
CONTROL BOX..................................9
OIL WARNING SYSTEM..................10
ENGINE SWITCH.............................10
AC SWITCH (N.F.B.) ........................10
G.F.C.I. RECEPTACLE ....................11
PRE-OPERATION CHECK .................12
FUEL.................................................12
ENGINE OIL .....................................13
GROUND (Earth)..............................13
OPERATION........................................14
STARTING THE ENGINE.................14
APPLICATION RANGE ....................15
CONNECTION..................................16
STOPPING THE ENGINE ................17
PERIODIC MAINTENANCE ................18
MAINTENANCE CHART ..................18
SPARK PLUG INSPECTION............20
CARBURETOR ADJUSTMENT .......20
ENGINE OIL REPLACEMENT .........21
AIR FILTER ......................................22
FUEL COCK .....................................23
FUEL TANK FILTER.........................23
MUFFLER SCREEN AND SPARK
ARRESTER ......................................24
G.F.C.I. RECEPTACLE TEST ..........25
TROUBLESHOOTING......................26
STORAGE ...........................................28
DRAIN THE FUEL ............................28
ENGINE ............................................28
EXHAUST EMISSION CONTROL
SYSTEM AND COMPONENTS...........29
SPECIFICATIONS ...............................30
DIMENSIONS ...................................30
ENGINE ............................................30
GENERATOR ...................................30
WIRING DIAGRAM..............................31
EF1600/EF2600................................31
YG2600.............................................32
ENGINE HANGER
INSTALLATION ..................................33
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– 1 –
Yamaha Motor Corporation, U.S.A. hereby war-
rants that new Yamaha consumer generators pur-
chased from an authorized Yamaha consumer
generator dealer in the continental United States
will be free from defects in material and workman-
ship for the period of time stated herein, subject to
certain stated limitations.
THE PERIOD OF WARRANTY Any new EF-
series or EDL-series Yamaha Generator pur-
chased for private, non-commercial use from an
authorized Yamaha consumer generator dealer in
the continental United States will
be warranted against defects in material or work-
manship for a period two (2) years from date of
purchase, subject to exclusions noted herein. Any
Yamaha non-commercial
generator purchased and utilized for commercial
or rental applications will be warranted for a period
one (1) year from the date of purchase, subject to
exclusions noted herein.
DURING THE PERIOD OF WARRANTY any
authorized Yamaha consumer generator dealer
will, free of charge, repair or replace, at Yamaha’s
option, any part adjudged defective by Yamaha
due to faulty workmanship or material from the
factory. Parts used in warranty repairs will be war-
ranted for the balance of the product’s warranty
period. All parts replaced under warranty become
property of Yamaha Motor Corporation U.S.A.
GENERAL EXCLUSIONS from this warranty shall
include any failures caused by:
a. Installation of parts or accessories that are not
qualitatively equivalent to genuine Yamaha
parts.
b. Abnormal strain, neglect, or abuse.
c. Lack of proper maintenance.
d. Accident or collision damage.
SPECIFIC EXCLUSIONS from this warranty shall
include parts replaced due to normal wear or rou-
tine maintenance.
THE CUSTOMER’S RESPONSIBILITY under this
warranty shall be to:
1. Operate and maintain the generator as speci-
fied in the appropriate Owner’s Manual;
2. Give notice to an authorized Yamaha con-
sumer generator dealer of any and all appar-
ent defects within ten (10) days after discov-
ery, and make the unit available at that time
for inspection and repairs at such dealer’s
place of business.
WARRANTY TRANSFER: To transfer the warranty
from the original purchaser to any subsequent
purchaser(s), it is imperative that the unit be
inspected and registered for warranty by an
authorized Yamaha consumer generator dealer. In
order for this warranty to remain in effect, this
inspection and registration must take place within
ten (10) days after transfer. An inspection and reg-
istration fee will be charged for this service. In no
case will the warranty be extended beyond the
original period.
YAMAHA MOTOR CORPORATION, U.S.A. MAKES
NO OTHER WARRANTY OF ANY KIND,
EXPRESSED OR IMPLIED. ALL IMPLIED WAR-
RANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE WHICH EXCEED
THE OBLIGATIONS AND TIME LIMITS STATED IN
THIS WARRANTY ARE HEREBY DISCLAIMED BY
YAMAHA MOTOR CORPORATION, U.S.A. AND
EXCLUDED FROM THIS WARRANTY.
SOME STATES DO NOT ALLOW LIMITATIONS ON
HOW LONG AN IMPLIED WARRANTY LASTS, SO
THE ABOVE LIMITATION MAY NOT APPLY TO
YOU. ALSO EXCLUDED FROM THIS WARRANTY
ARE ANY INCIDENTAL OR CONSEQUENTIAL
DAMAGES INCLUDING LOSS OF USE. SOME
STATES DO NOT ALLOW THE EXCLUSION OR
LIMITATION OF INCIDENTAL OR CONSEQUEN-
TIAL DAMAGES, SO THE ABOVE EXCLUSION
MAY NOT APPLY TO YOU.
THIS WARRANTY GIVES YOU SPECIFIC LEGAL
RIGHTS, AND YOU MAY ALSO HAVE OTHER
RIGHTS WHICH VARY FROM STATE TO STATE.
YAMAHA MOTOR CORPORATION, U.S.A.
Post Office Box 6555
Cypress, California 90630
AE01119
YAMAHA MOTOR CORPORATION U.S.A.
EF- AND EDL-SERIES GENERATOR LIMITED WARRANTY
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– 2 –
Yamaha Motor Corporation, U.S.A. hereby war-
rants that new Yamaha EC- and YG-series gener-
ators purchased from an authorized Yamaha
industrial generator dealer in the continental
United States will be free from defects in material
and workmanship for the period of time stated
herein, subject to certain stated limitations.
THE PERIOD OF WARRANTY for Yamaha EC-
series and YG-series generators shall be one (1)
year from the date of purchase.
DURING THE PERIOD OF WARRANTY any
authorized Yamaha industrial generator dealer
will, free of charge, repair or replace, at Yamaha’s
option, any part adjudged defective by Yamaha
due to faulty workmanship or material from the
factory. Parts used in warranty repairs will be war-
ranted for the balance of the product’s warranty
period. All parts replaced under warranty become
property of Yamaha Motor Corporation U.S.A.
GENERAL EXCLUSIONS from this warranty shall
include any failures caused by:
a. Installation of parts or accessories that are not
qualitatively equivalent to genuine Yamaha
parts.
b. Abnormal strain, neglect, or abuse.
c. Lack of proper maintenance.
d. Accident or collision damage.
SPECIFIC EXCLUSIONS from this warranty shall
include parts replaced due to normal wear or rou-
tine maintenance.
THE CUSTOMER’S RESPONSIBILITY under this
warranty shall be to:
1. Operate and maintain the diesel generator as
specified in the appropriate Owner’s Manual;
2. Give notice to an authorized Yamaha industri-
al generator dealer of any and all apparent
defects within ten (10) days after discovery,
and make the unit available at that time for
inspection and repairs at such dealer’s place
of business.
WARRANTY TRANSFER: To transfer the warran-
ty from the original purchaser to any subsequent
purchaser(s), it is imperative that the unit be
inspected and registered for warranty by an autho-
rized Yamaha industrial generator dealer. In order
for this warranty to remain in effect, this inspection
and registration must take place within ten (10)
days after transfer. An inspection and registration
fee will be charged for this service. In no case will
the warranty be extended beyond the original peri-
od.
YAMAHA MOTOR CORPORATION, U.S.A. MAKES
NO OTHER WARRANTY OF ANY KIND,
EXPRESSED OR IMPLIED. ALL IMPLIED WAR-
RANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE WHICH EXCEED
THE OBLIGATIONS AND TIME LIMITS STATED IN
THIS WARRANTY ARE HEREBY DISCLAIMED BY
YAMAHA MOTOR CORPORATION, U.S.A. AND
EXCLUDED FROM THIS WARRANTY.
SOME STATES DO NOT ALLOW LIMITATIONS ON
HOW LONG AN IMPLIED WARRANTY LASTS, SO
THE ABOVE LIMITATION MAY NOT APPLY TO
YOU. ALSO EXCLUDED FROM THIS WARRANTY
ARE ANY INCIDENTAL OR CONSEQUENTIAL
DAMAGES INCLUDING LOSS OF USE. SOME
STATES DO NOT ALLOW THE EXCLUSION OR
LIMITATION OF INCIDENTAL OR CONSEQUEN-
TIAL DAMAGES, SO THE ABOVE EXCLUSION
MAY NOT APPLY TO YOU.
THIS WARRANTY GIVES YOU SPECIFIC LEGAL
RIGHTS, AND YOU MAY ALSO HAVE OTHER
RIGHTS WHICH VARY FROM STATE TO STATE.
YAMAHA MOTOR CORPORATION, U.S.A.
Post Office Box 6555
Cypress, California 90630
YAMAHA MOTOR CORPORATION U.S.A.
EC- AND YG-SERIES INDUSTRIAL GENERATOR LIMITED WARRANTY
7NJ-9-12A 10/27/03 10:20 AM Page 2

– 3 –
Q. What costs are my responsibility during the
warranty period?
A. The customer’s responsibility includes all
costs of normal maintenance service, non-
warranty repairs, accident damages, as well
as oil and spark plugs.
Q. What are some examples of “abnormal” strain,
neglect, or abuse?
A. These terms are general and overlap each
other in areas. Specific examples include:
Running the machine out of oil; lack of proper
maintenance; operating the machine with a
broken or damaged part which causes anoth-
er part to fail; and so on. If you have any
specific questions on operation or mainte-
nance, please contact your dealer for advice.
Q. Does the warranty cover incidental costs such
as transportation due to a failure?
A. No. The warranty is limited to repair of the
machine itself.
Q. May I perform any or all of the recommended
maintenance shown in the Owner’s Manual
instead of having the dealer do them?
A. Yes, if you are a qualified mechanic and follow
the procedures specified in the Owner’s and
Service Manual. We do recommend, however,
that items requiring special tools or equipment
be done by a Yamaha generator dealer.
Q. Will the warranty be void or cancelled if I do
not operate or maintain my new Yamaha
exactly as specified in the Owner’s Manual?
A. No. The warranty on a new Yamaha cannot
be “voided” or “cancelled.”
However, if a particular failure is caused by
operation or maintenance other than as
shown in the Owner’s Manual, that failure
may not be covered under warranty.
Q. What responsibility does my dealer have
under this warranty?
A. Each Yamaha generator dealer is expected
to:
1. Check the operation of the generator
before sale.
2. Explain the operation, maintenance, and
warranty requirements to your satisfaction
at the time of sale, and upon your request
at any later date.
In addition, each Yamaha generator dealer is
held responsible for his setup, service and
warranty repair work.
Q. Is the warranty transferable to second own-
ers?
A. Yes. The remainder of the existing warranty
can be transfered upon request.
The unit has to be inspected and reregistered
by an authorized Yamaha generator dealer for
the policy to remain effective.
CUSTOMER SERVICE
If your machine requires warranty service, you
must take it to any authorized Yamaha generator
dealer within the continental United States. Be
sure to bring your warranty registration identifica-
tion or other valid proof of the original date of pur-
chase. If a question or problem arises regarding
warranty, first contact the owner of the dealership.
Since all warranty matters are handled at the deal-
er level, this person is in the best position to help
you. If you are still not satisfied and require addi-
tional assistance, please write:
YAMAHA MOTOR CORPORATION U.S.A.
CUSTOMER RELATIONS DEPARTMENT
P.O. BOX 6555
Cypress, California 90630
CHANGE OF ADDRESS
The federal government requires each manufac-
turer to maintain a complete, up-to-date list of all
first purchasers against the possibility of a safety-
related defect and recall. This list is compiled from
the purchase registrations sent to Yamaha Motor
Corporation, U.S.A. by the selling dealer at the
time of your purchase. If you should move after
you have purchased your new generator, please
advise us of your new address by sending a post-
card listing your Yamaha model name, engine
number, dealer number (or dealer’s name) as it is
shown on your warranty identification, your name
and new mailing address. Mail to:
YAMAHA MOTOR CORPORATION, U.S.A.
WARRANTY DEPARTMENT
P.O. Box 6555
Cypress, California 90630
This will ensure that Yamaha Motor Corporation,
U.S.A. has an up-to-date registration record in
accordance with federal law.
WARRANTY QUESTIONS AND ANSWERS
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– 4 –
AE00062
LOCATION OF IMPORTANT LABELS
Please read the following labels carefully before oper-
ating this machine.
NOTE:
Maintain or replace safety and instruction labels, as
necessary.
WARNING
READ THE OWNER‘S MANUAL AND ALL LABELS BEFORE OPERATING.
qqAVERTISSEMENT
8
ONLY OPERATE IN WELL-VENTILATED AREA.
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.
8
8
8
8
8
MACHINE AU SEC EN TOUTES CIRCONSTANCES.
7NJ-24162-10
8
8
8
8
8
8
LISEZ LE MODE D‘EMPLOI ET TOUTES LES ETIQUETTES AVANT DE
FAIRE FONCTIONNER LA MACHINE.
FAITES FONCTIONNER UNIQUEMENT DANS DES LIEUX BIEN AERES.
LES GAZ D‘ECHAPPEMENT CONTIENNENT DU MONOXYDE DE CARBONE.
VERIFIEZ SI DU CARBURANT A ETE RENVERSE DU S‘IL FUIT.
ARRETEZ LE MOTEUR AVANT DE FAIRE LE PLEIN DE CARBURANT.
N‘UTILISEZ PAS A PROXIMITE DE MATERIAUX INFLAMMABLES.
IL Y A RISQUE D‘ELECTROCUTION SI LE GENERATEUR FONCTIONNE
SOUS LA PLUIE, DANS LA NEIGE, OU PRES DE L‘EAU. GARDEZ LA
MACHINE AU SEC EN TOUTES CIRCONSTANCES.
WARNING
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 elec-
trician. Refer to the owner’s manual.
qet
792-004
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792-003
HOT EXHAUST
1
3
0246810
ENGINE AIR INDEX (California only)
LEAST CLEAN
MOST CLEAN
NOTE : THE LOWER THE AIR INDEX, THE LESS THE POLLUTION
FOR THE FOLLOWING USE:
THIS ENGINE IS CERTIFIED TO BE EMISSION COMPLIANT
MODERATE INTERMEDIATE EXTENDED
CHECK OWNERS MANUAL FOR FURTHER DETAILS
THIS LABEL T O BE REMOVED BY T H E ULTIMATE PURCHASER ONLY!
IMPORTANT ENGINE INFORMATION
ENGINE FAMILY : zzzzzzzzzzzz
E M
REFER TO OWNER'S MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS.
THIS ENGINE MEETS
zzzz - zzzz CALIFORNIA EMISSION REGULATIONS FOR SMALL OFF-ROAD ENGINES.
THIS ENGINE CONFORMS TO PHASE 2 U.S.EPA REGULATIONS FOR SMALL NONROAD ENGINES.
YAMAHA MOTOR CO. LTD
zzz-2179R-zz
DISPLACEMENT :
VALVE LASH ( A )
rpm
NO OTHER ADJUSTMENTS NEEDED.
ENGINE OIL :
IDLE SPEED :
FUEL : THIS ENGINE IS CERTIFIED TO OPERATE ON UNLEADED GASOLINE.
IGNITION TIMING & IDLE MIXTURE
zzz
J
IN :
TYPE
z . zz ~ z . zz
EX :
z . zz ~ z . zz
zzzz
~ zzzz
AT NO LOAD
SESAE 10W - 30
EMISSIONS COMPLIANCE PERIOD:CATEGORY A (EPA)
4
2
5
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–5 –
741-002
AE00071
SAFETY INFORMATION
AE00072
EXHAUST FUMES ARE POISONOUS
9Never 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.
AE00075
FUEL IS HIGHLY FLAMMABLE AND POISONOUS
9Always turn off the engine when refuelling.
9Never refuel while smoking or in the vicinity of an
open flame.
9Take care not to spill any fuel on the engine or
muffler when refuelling.
9If you swallow any fuel, inhale fuel vapor, or allow
any to get in your eye(s), see your doctor immedi-
ately. If any fuel spills on your skin or clothing,
immediately wash with soap and water and
change your clothes.
741-003
741-005
741-004
9When operating or transporting the machine, be
sure it is kept upright. If it tilts, fuel may leak from
the carburetor or fuel tank.
741- 006
AE00843
ENGINE AND MUFFLER MAY BE HOT
9Place the machine in a place where pedestrians
or children are not likely to touch the machine.
741-007
9Avoid placing any flammable materials near the
exhaust outlet during operation.
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–6 –
741-008a
a
9Keep the machine at least 1 m (3 ft) from buildings
or other equipment, or the engine may overheat.
a1 m (3 ft)
741-009
9Avoid operating the engine with a dust cover.
q
741-067
9Be sure to carry the generator only by its carrying
handle(s).
1Carrying handle(s) (shaded)
741-010
AE00083
ELECTRIC SHOCK PREVENTION
9Never operate the engine in rain or snow.
741-011
9Never touch the machine with wet hands or elec-
trical shock will occur.
q
741-012b
9Be sure to ground (earth) the generator.
NOTE:
Use ground (earth) lead of sufficient current capacity.
1Lead diameter
7NJ-9-12A 10/27/03 10:20 AM Page 6

–7 –
Ground (earth) Lead
Diameter:
0.12 mm (0.005 in)/ampere
EX;
10 Ampere →1.2mm (0.05 in)
AE00088
CONNECTION NOTES
9Avoid connecting the generator to commercial
power outlet.
9Avoid connecting the generator in parallel with any
other generator.
1Correct
2Incorrect
AE00091
CONNECTION
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Before the generator can be connected to a build-
ing’s electrical system, a licensed electrician must
install an isolation (transfer) switch in the build-
ing’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 build-
ing electrical system damage can occur when nor-
mal operating power returns if unit is used without
an isolation switch.
AE00086
EXTENSION CORD NOTES
9When using an extension cord, its total length
should not exceed
60 meters for cross section of 1.5 mm square
and
100 meters for cross section of 2.5 mm square.
9This extension cord should be protected by a
tough flexible rubber sheath (IEC 245) or the
equivalent to withstand mechanical stresses.
741-040a
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




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–8 –
EF1600/EF2600
YG2600
qw!3 !3!2
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o!0 793-015
qw!3 !3!2
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o!0 793-016
t!3 !3
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793-017
AE00101
CONTROL FUNCTION
AE00102
DESCRIPTION
1Fuel tank
2Fuel tank cap
3Fuel cock
4Air filter cover
5Spark plug
6Muffler
7Choke lever
8Ground (Earth) terminal
9Oil filler cap
0Oil drain plug
qRecoil starter
wFuel level gauge
eCarrying handles (shaded)
7NJ-9-12A 10/27/03 10:20 AM Page 8

–9 –
AE00104
CONTROL BOX
1Engine switch
2Oil warning light
3Pilot light (YG2600)
4Voltage meter
(EF1600/EF2600)
5AC switch (N.F.B.)
6AC receptacle
7G.F.C.I. receptacle
EF1600
EF2600
YG2600
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t
793-018
q
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t
793-019
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793-020
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7NJ-9-12A 10/27/03 10:20 AM Page 9

–10 –
700-027c
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763-086c
OFF
ON
763-084f
q
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763-095
OFF
ON
AE00111
OIL WARNING SYSTEM
When the oil level falls below the lower level, the
engine stops automatically. Unless you refill with oil,
the engine will not start again.
NOTE:
If the engine stalls or does not start, turn the engine
switch to "ON" position 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.
AE00122
ENGINE SWITCH
The engine switch controls the ignition system.
17“ON”
Ignition circuit is switched on.
The engine can be started.
25“STOP”
Ignition circuit is switched off.
The engine will not run.
AE00131
AC SWITCH (N.F.B.)
The AC switch (Non-Fuse Breaker) turns off automati-
cally when the load exceeds the generator rated out-
put.
1I“ON”
23“OFF”
cC
Reduce the load to the specified generator rated
output if the AC switch (N.F.B.) turns off. If it turns
off again, consult your Yamaha dealer.
7NJ-9-12A 10/27/03 10:20 AM Page 10

–11 –
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763-083
763-060
AE00848
G.F.C.I. RECEPTACLE
(for YG2600)
The G.F.C.I. (Ground Fault Circuit Interrupter) 1shuts
off power to the protected receptacles if a ground fault
(electrical leak) is detected.
If the reset button 2pops out 3, the equipment
plugged into the receptacle may be faulty. If this hap-
pens, check the equipment carefully. If the equipment
appears to be in good condition, press the reset button
firmly until a click is heard. This will restore power. If
the reset button pops out again, unplug the equipment
immediately. Have the equipment inspected and
repaired by a qualified repairperson before attempting
to use it again.
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TO REDUCE THE CHANCE OF ELECTRICAL
SHOCK:
9Do not attempt to operate equipment if the
ground fault circuit interrupter reset button
pops out repeatedly during use.
9Test the ground fault circuit interrupter during
the pre-operation checks according to the
maintenance instructions on page 25.
9Remember that only receptacles labeled
“Ground Fault Protected”have ground fault
circuit interrupter protection.
1
3
7NJ-9-12A 10/27/03 10:20 AM Page 11

–12 –
741-001
707-033a
q
707-001
707-037
707-051
AE00845
PRE-OPERATION CHECK
NOTE:
Pre-operation checks should be made each time the
generator is used.
w
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.
AE00856
FUEL
Make sure there is sufficient fuel in the tank.
Your Yamaha engine has been designed to use regu-
lar unleaded gasoline with a pump octane number ((R
+ M)/2) of 86 or higher, or research octane number of
91 or higher.
1Fuel level gauge
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9Fuel is highly flammable and poisonous.
Check “SAFETY INFORMATION”(See page 5)
carefully before refueling.
9Do not fill above the top of the fuel filter or it
may overflow when the fuel heats up later and
expands.
9Wipe up any spilled fuel immediately.
9After refueling, make sure the tank cap is tight-
ened securely.
Recommended fuel:
Unleaded gasoline
Fuel tank capacity:
Total:
EF1600/EF2600
12.0 L (2.64 Imp gal, 3.17 US gal)
YG2600
19.0 L (4.18 Imp gal, 5.02 US gal)
“F”Full
“E”Empty
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–13 –
700-068
700-110
q
700-065
0°C 25°C
80°F32°F
A YAMALUBE 4(10W-30)
D SAE 10W C SAE #20 B SAE #30
700-006
741-029a
AE00222
ENGINE OIL
Make sure the engine oil is at the upper level of the oil
filler hole.
Add oil as necessary.
1Upper level
NOTE:
Recommended engine oil classification:
API Service “SE”or “SF”.
cC
The generator has been shipped without engine
oil. Fill with oil or it will not start.
AE00241
GROUND (Earth)
Make sure to ground (earth) the generator.
Check "SAFETY INFORMATION" on page 6.
Recommended oil:
åYAMALUBE 4 (10W-30) or SAE 10W-30
type SE motor oil
∫SAE #30
çSAE #20
∂SAE 10W
Engine oil quantity:
0.6 L (0.53 lmp qt, 0.63 US qt)
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–14 –
761-027
q
763-086e
OFF
ON
705-037
q
763-084h
q
701-025a
q
AE00955
OPERATION
NOTE:
The generator has been shipped without engine oil.
Fill with oil or it will not start.
1Upper level
AE00854
STARTING THE ENGINE
NOTE:
9Before starting the engine, do not connect any
electric devices.
9Turn the AC switch (N.F.B.) to the “OFF”position.
13“OFF”
1. Turn the fuel cock lever to the “ON”position.
1“ON”
2. Turn the engine switch to the “ON”position.
17“ON”
3. Turn the choke lever to the “1”position.
1Choke lever
NOTE:
The choke is not required to start a warm engine.
Turn the choke lever to the operating position.
700-006a
q
7NJ-9-12A 10/27/03 10:21 AM Page 14

–15 –
4. Pull slowly on the recoil starter until it is engaged,
then pull it briskly.
5. After the engine starts, warm up the engine until
the engine does not stop when the choke lever is
returned to the operating position.
6. Turn the choke lever back to the operating posi-
tion.
1Operating position
704-010
701-025
q
NOTE:
9“–” means below.
9Application wattage indicates when each appara-
tus is used by itself.
cC
Be sure the total load is within generator rated out-
put otherwise generator damage will occur.
NOTE:
Some precision equipment is voltage sensitive and
may require a more uniform voltage supply than
portable generators provide. Examples include some
medical equipment, personal computers, and some
inverters that sense peak and RMS voltage values.
Consult the precision-equipment vendor before relying
on any portable generator to provide power to such
equipment.
AE00343
APPLICATION RANGE
AC
Power factor 1 0.8–0.95 0.4–0.75
(Efficiency 0.85)
EF1600 –1,400W –1,120W –480W
EF2600
YG2600 –2,300W –1,840W –780W
779-006a 779-006c 779-006b
7NJ-9-12A 10/27/03 10:21 AM Page 15