Yamaha Portable Generator EF4000DE User Manual

Generator  
OWNER’S MANUAL  
EF4000DE  
EF5200DE  
EF6600DE  
YG4000D  
YG5200D  
YG6600D  
YG6600DE  
LIT-19626-01-15  
7WV-28199-11  
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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.  
AE00012  
PRI-I.D. NUMBER:  
IDENTIFICATION NUMBER RECORDS  
Record your Primary I.D., and serial num-  
bers in the spaces provided, to assist you  
MODEL  
in ordering spare parts from a Yamaha  
dealer.  
PRI-I.D.  
CODE  
Also record and keep these I.D. numbers  
in a separate place in case your machine  
is stolen.  
SERIAL No.  
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.  
790-060  
AE00022  
EF4000DE/EF5200DE/EF6600DE  
YG4000D/YG5200D/YG6600D/YG6600DE  
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-19626-01-15  
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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.  
NOTE:  
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 engine and this manual. If there  
is any question concerning this manu-  
al, please consult a Yamaha dealer.  
9 This manual should be considered a  
permanent part of this engine and  
should remain with this engine when  
resold.  
-
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.  
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AE00041  
CONTENTS  
PERIODIC MAINTENANCE ................25  
MAINTENANCE CHART ..................25  
SPARK PLUG INSPECTION............27  
CARBURETOR ADJUSTMENT .......27  
ENGINE OIL REPLACEMENT .........28  
AIR FILTER ......................................29  
FUEL COCK .....................................30  
FUEL TANK FILTER.........................30  
LIMITED WARRANTY (EF- AND  
EDL-SERIES) ........................................1  
LIMITED WARRANTY (EC- AND  
YG-SERIES) ..........................................2  
LOCATION OF IMPORTANT LABELS.4  
SAFETY INFORMATION.......................6  
EXHAUST FUMES ARE  
POISONOUS......................................6  
MUFFLER SCREEN AND SPARK  
ARRESTER ......................................31  
FUEL IS HIGHLY FLAMMABLE AND  
POISONOUS......................................6  
BATTERY .........................................34  
FUSE REPLACEMENT ....................35  
G.F.C.I. RECEPTACLE TEST..........35  
TROUBLESHOOTING......................36  
STORAGE ...........................................40  
DRAIN THE FUEL ............................40  
ENGINE............................................40  
BATTERY .........................................41  
EXHAUST EMISSION CONTROL  
ENGINE AND MUFFLER MAY  
BE HOT ..............................................6  
ELECTRIC SHOCK PREVENTION....7  
CONNECTION NOTES ......................8  
CONNECTION....................................8  
EXTENSION CORD NOTES..............8  
CONTROL FUNCTION..........................9  
DESCRIPTION ...................................9  
CONTROL BOX................................11  
OIL WARNING SYSTEM..................13  
ENGINE SWITCH.............................13  
STARTER SWITCH..........................13  
AC SWITCH (N.F.B.)........................14  
ECONOMY IDLE SWITCH...............14  
VOLTAGE ADJUSTER.....................15  
G.F.C.I. RECEPTACLE ....................15  
PRE-OPERATION CHECK .................16  
FUEL.................................................16  
ENGINE OIL .....................................17  
GROUND (Earth)..............................18  
BATTERY .........................................18  
OPERATION........................................19  
STARTING THE ENGINE.................19  
APPLICATION RANGE ....................21  
CONNECTION..................................22  
STOPPING THE ENGINE ................24  
SYSTEM AND COMPONENTS...........42  
SPECIFICATIONS...............................43  
DIMENSIONS...................................43  
ENGINE............................................43  
GENERATOR...................................43  
WIRING DIAGRAM  
EF4000DE ........................................44  
EF5200DE ........................................45  
EF6600DE ........................................46  
YG4000D..........................................47  
YG5200D..........................................48  
YG6600D..........................................49  
YG6600DE........................................50  
BATTERY TRAY INSTALLATION......51  
ENGINE HANGER INSTALLATION ...51  
OPTIONAL PARTS INSTALLATION..51  
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AE01119  
YAMAHA MOTOR CORPORATION U.S.A.  
EF- AND EDL-SERIES GENERATOR LIMITED WARRANTY  
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.  
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 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 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 registration  
fee will be charged for this service. In no case will  
the warranty be extended beyond the original peri-  
od.  
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.  
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.  
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.  
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.  
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.  
THIS WARRANTY GIVES YOU SPECIFIC LEGAL  
RIGHTS, AND YOU MAY ALSO HAVE OTHER  
RIGHTS WHICH VARY FROM STATE TO STATE.  
SPECIFIC EXCLUSIONS from this warranty shall  
include parts replaced due to normal wear or rou-  
tine maintenance.  
YAMAHA MOTOR CORPORATION, U.S.A.  
Post Office Box 6555  
THE CUSTOMER’S RESPONSIBILITY under this  
warranty shall be to:  
Cypress, California 90630  
1. Operate and maintain the generator as speci-  
fied in the appropriate Owner’s Manual;  
– 1 –  
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YAMAHA MOTOR CORPORATION U.S.A.  
EC- AND YG-SERIES INDUSTRIAL GENERATOR LIMITED WARRANTY  
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.  
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.  
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.  
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.  
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.  
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.  
SPECIFIC EXCLUSIONS from this warranty shall  
include parts replaced due to normal wear or rou-  
tine maintenance.  
THIS WARRANTY GIVES YOU SPECIFIC LEGAL  
RIGHTS, AND YOU MAY ALSO HAVE OTHER  
RIGHTS WHICH VARY FROM STATE TO STATE.  
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;  
YAMAHA MOTOR CORPORATION, U.S.A.  
Post Office Box 6555  
Cypress, California 90630  
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.  
– 2 –  
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WARRANTY QUESTIONS AND ANSWERS  
Q. What costs are my responsibility during the  
Q. Is the warranty transferable to second own-  
warranty period?  
ers?  
A. The customer’s responsibility includes all  
costs of normal maintenance service, non-  
warranty repairs, accident damages, as well  
as oil and spark plugs.  
A. Yes. The remainder of the existing warranty  
can be transfered upon request.The unit has  
to be inspected and reregistered by an autho-  
rized Yamaha generator dealer for the policy  
to remain effective.  
Q. What are some examples of “abnormal” strain,  
neglect, or abuse?  
CUSTOMER SERVICE  
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.  
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:  
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.  
YAMAHA MOTOR CORPORATION U.S.A. CUS-  
TOMER RELATIONS DEPARTMENT  
P.O. BOX 6555  
Q. May I perform any or all of the recommended  
maintenance shown in the Owner’s Manual  
instead of having the dealer do them?  
Cypress, California 90630  
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.  
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:  
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:  
YAMAHA MOTOR CORPORATION, U.S.A.  
WARRANTY DEPARTMENT  
P.O. Box 6555  
1. Check the operation of the generator  
before sale.  
Cypress, California 90630  
2. Explain the operation, maintenance, and  
warranty requirements to your satisfaction  
at the time of sale, and upon your request  
at any later date.  
This will ensure that Yamaha Motor Corporation,  
U.S.A. has an up-to-date registration record in  
accordance with federal law.  
In addition, each Yamaha generator dealer is  
held responsible for his setup, service and  
warranty repair work.  
– 3 –  
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AE00062  
twy r q  
e
LOCATION OF IMPORTANT LABELS  
(For EF4000DE/YG4000D)  
Please read the following labels carefully before oper-  
ating this machine.  
NOTE:  
Maintain or replace safety and instruction labels, as  
necessary.  
twy r q  
1
2
HOT EXHAUST  
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 owners manual.  
3
WARNING  
HOT AREA  
DO NOT TOUCH  
4
q
q
WARNING  
AVERTISSEMENT  
LISEZ LE MODE DEMPLOI ET TOUTES LES ETIQUETTES AVANT DE  
FAIRE FONCTIONNER LA MACHINE.  
FAITES FONCTIONNER UNIQUEMENT DANS DES LIEUX BIEN AERES.  
8
8
READ THE OWNERS MANUAL AND ALL LABELS BEFORE OPERATING.  
8
ONLY OPERATE IN WELL-VENTILATED AREA.  
8
EXHAUST GAS CONTAINS POISONOUS CARBON MONOXIDE.  
CHECK FOR SPILLED FUEL OR FUEL LEAKS.  
STOP ENGINE BEFORE REFUELING.  
LES GAZ DECHAPPEMENT CONTIENNENT DU MONOXYDE DE CARBONE.  
8 VERIFIEZ SI DU CARBURANT A ETE RENVERSE DU SIL FUIT.  
8
8
8
ARRETEZ LE MOTEUR AVANT DE FAIRE LE PLEIN DE CARBURANT.  
NUTILISEZ PAS A PROXIMITE DE MATERIAUX INFLAMMABLES.  
8
8
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.  
IL Y A RISQUE DELECTROCUTION SI LE GENERATEUR FONCTIONNE  
SOUS LA PLUIE, DANS LA NEIGE, OU PRES DE LEAU. GARDEZ LA  
8
8
MACHINE AU SEC EN TOUTES CIRCONSTANCES.  
7NJ-24162-10  
5
6
DISPLACEMENT  
:
J
VALVE LASH  
(
A
)
IN  
:
EX:  
z.zz~z.zz  
z.zz~z.zz  
zzz  
IMPORTANT ENGINE INFORMATION  
ENGINE FAMILY : zzzzzzzzzzzz  
IGNITION TIMING  
IDLE SPEED  
&
IDLE MIXTURE  
NO OTHER ADJUSTMENTS NEEDED.  
rpm AT NO LOAD  
E M  
REFER TO OWNER'S MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS.  
:
zzzz~zzzz  
THIS ENGINE MEETS zzzz-zzzz CALIFORNIA EMISSION REGULATIONS FOR SMALL OFF-ROAD ENGINES.  
FUEL  
:
THIS ENGINE IS CERTIFIED TO OPERATE ON UNLEADED GASOLINE.  
TYPE  
THIS ENGINE CONFORMS TO PHASE  
EMISSIONS COMPLIANCE PERIOD:CATEGORY  
2
U.S.EPA REGULATIONS FOR SMALL NONROAD ENGINES.  
(EPA)  
A
YAMAHA MOTOR CO. LTD  
zzz-2179R-zz  
ENGINE OIL  
:
SAE 10W  
-
30  
SE  
(
)
y
ENGINE AIR INDEX C a l i f o r n i a o n l  
MOST 0C L E A N  
2
4
6
8
LEAS1T 0  
CLEAN  
T H E P O L L U T I O N  
:
N O T E  
T H E L O W E R T H E A I R  
I S C E R T I F I E D  
F O R T H E F O L L O W I N G U S E :  
I N D E X , T H E L E S S  
T H I S E N G I N E  
T O B E E M I S S I O N C O M P L I A N T  
INTERMEDIATE  
MODERATE  
EXTENDED  
CHECK OWNERS MANUAL FOR FURTHER  
L A B E L REMOVED B Y  
D
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E
A
T
T
A
E
I
L
S
T
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I
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O
B
E
T
H
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U
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I
P U R C H A S E R O N L Y !  
– 4 –  
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(For EF5200DE/EF6600DE/YG5200D/  
YG6600D/YG6600DE)  
e
r
q
792-027a  
t
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1
2
HOT EXHAUST  
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 owners manual.  
792-028b  
3
q
q
WARNING  
AVERTISSEMENT  
LISEZ LE MODE DEMPLOI ET TOUTES LES ETIQUETTES AVANT DE  
FAIRE FONCTIONNER LA MACHINE.  
FAITES FONCTIONNER UNIQUEMENT DANS DES LIEUX BIEN AERES.  
8
8
READ THE OWNERS MANUAL AND ALL LABELS BEFORE OPERATING.  
8
8
ONLY OPERATE IN WELL-VENTILATED AREA.  
EXHAUST GAS CONTAINS POISONOUS CARBON MONOXIDE.  
CHECK FOR SPILLED FUEL OR FUEL LEAKS.  
STOP ENGINE BEFORE REFUELING.  
LES GAZ DECHAPPEMENT CONTIENNENT DU MONOXYDE DE CARBONE.  
8 VERIFIEZ SI DU CARBURANT A ETE RENVERSE DU SIL FUIT.  
8
8
8
ARRETEZ LE MOTEUR AVANT DE FAIRE LE PLEIN DE CARBURANT.  
NUTILISEZ PAS A PROXIMITE DE MATERIAUX INFLAMMABLES.  
8
8
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.  
IL Y A RISQUE DELECTROCUTION SI LE GENERATEUR FONCTIONNE  
SOUS LA PLUIE, DANS LA NEIGE, OU PRES DE LEAU. GARDEZ LA  
8
8
MACHINE AU SEC EN TOUTES CIRCONSTANCES.  
7NJ-24162-10  
4
5
DISPLACEMENT  
:
J
VALVE LASH  
(
A
)
IN  
:
EX:  
z.zz~z.zz  
z.zz~z.zz  
zzz  
IMPORTANT ENGINE INFORMATION  
ENGINE FAMILY : zzzzzzzzzzzz  
IGNITION TIMING  
IDLE SPEED  
&
IDLE MIXTURE  
NO OTHER ADJUSTMENTS NEEDED.  
rpm AT NO LOAD  
E M  
REFER TO OWNER'S MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS.  
:
zzzz~zzzz  
THIS ENGINE MEETS zzzz-zzzz CALIFORNIA EMISSION REGULATIONS FOR SMALL OFF-ROAD ENGINES.  
FUEL  
:
THIS ENGINE IS CERTIFIED TO OPERATE ON UNLEADED GASOLINE.  
TYPE  
THIS ENGINE CONFORMS TO PHASE  
EMISSIONS COMPLIANCE PERIOD:CATEGORY  
2
U.S.EPA REGULATIONS FOR SMALL NONROAD ENGINES.  
(EPA)  
A
YAMAHA MOTOR CO. LTD  
zzz-2179R-zz  
ENGINE OIL  
:
SAE 10W  
-
30  
SE  
(
)
y
ENGINE AIR INDEX C a l i f o r n i a o n l  
MOST 0C L E A N  
2
4
6
8
LEAS1T 0  
CLEAN  
T H E P O L L U T I O N  
:
N O T E  
T H E L O W E R T H E A I R  
I S C E R T I F I E D  
F O R T H E F O L L O W I N G U S E :  
I N D E X , T H E L E S S  
T H I S E N G I N E  
T O B E E M I S S I O N C O M P L I A N T  
INTERMEDIATE  
MODERATE  
EXTENDED  
CHECK OWNERS MANUAL FOR FURTHER  
L A B E L REMOVED B Y  
D
M
E
A
T
T
A
E
I
L
S
T
H
I
S
T
O
B
E
T
H
E
U
L
T
I
P U R C H A S E R O N L Y !  
5 –  
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AE00071  
SAFETY INFORMATION  
AE00072  
EXHAUST FUMES ARE POISONOUS  
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.  
741-002  
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.  
741-003  
9 Take care not to spill any fuel on the engine or  
muffler when refuelling.  
9 If 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.  
741-005  
9 When operating or transporting the machine, be  
sure it is kept upright. If it tilts, fuel may leak from  
the carburetor or fuel tank.  
741-004  
AE00843  
ENGINE AND MUFFLER MAY BE HOT  
9 Place the machine in a place where pedestrians  
or children are not likely to touch the machine.  
741- 006  
9 Avoid placing any flammable materials near the  
exhaust outlet during operation.  
741-007  
6 –  
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9 Keep the machine at least 1 m (3 ft) from buildings  
a
or other equipment, or the engine may overheat.  
a 1 m (3 ft)  
741-008a  
9 Avoid operating the engine with a dust cover.  
741-009  
9 Be sure to carry the generator only by its carrying  
q
handle(s).  
1 Carrying handle(s) (shaded)  
741-060  
AE00083  
ELECTRIC SHOCK PREVENTION  
9 Never operate the engine in rain or snow.  
741-010  
9 Never touch the machine with wet hands or elec-  
trical shock will occur.  
741-011  
9 Be sure to ground (earth) the generator.  
NOTE:  
A
Use ground (earth) lead of sufficient current capacity.  
q
1 Lead diameter  
741-062e  
7 –  
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B
Ground (earth) Lead  
Diameter:  
0.12 mm (0.005 in)/ampere  
EX;  
q
10 Ampere 1.2mm (0.05 in)  
å EF4000DE/YG4000D  
741-065  
B EF5200DE/EF6600DE/YG5200D/YG6600D/YG6600DE  
AE00088  
q
CONNECTION NOTES  
9 Avoid connecting the generator to commercial power out-  
let.  
9 Avoid connecting the generator in parallel with any other  
generator.  
w
q
w
1 Correct  
2 Incorrect  
AE00091  
CONNECTION  
w
Before the generator can be connected to a build-  
ings electrical system, a licensed electrician must  
install an isolation (transfer) switch in the build-  
ings 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.  
741-040a  
AE00086  
EXTENSION CORD NOTES  
9 When 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.  
9 This extension cord should be protected by a  
tough flexible rubber sheath (IEC 245) or the  
equivalent to withstand mechanical stresses.  
8 –  
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AE00101  
EF4000DE  
CONTROL FUNCTION  
q w !  
2
!
3
u
!3  
e
AE00102  
DESCRIPTION  
(for EF4000DE/EF5200DE/EF6600DE)  
1 Fuel tank  
r
2 Fuel tank cap  
3 Fuel cock  
4 Air filter cover  
5 Spark plug  
6 Muffler  
!
0
oi  
7 Ground (Earth) terminal  
8 Oil filler cap  
!
3
t !  
3
9 Oil drain plug  
0 Recoil starter  
q Voltage adjuster (for EF5200DE/EF6600DE)  
w Fuel level gauge  
e Carrying handles (shaded)  
y
EF5200DE/EF6600DE  
!
3
w
!
2
q !  
3
!
3
t
!
1
!
3
e
y
!
r
0
o
i
793-064a  
9 –  
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AE00102  
YG4000D  
DESCRIPTION  
(for YG4000D/YG5200D/YG6600D/  
YG6600DE)  
q w!  
2
!
3
i
!e3  
1 Fuel tank  
2 Fuel tank cap  
3 Fuel cock  
r
4 Air filter cover  
5 Spark plug  
6 Muffler  
7 Choke lever (for YG4000D/YG5200D/YG6600D)  
8 Ground (Earth) terminal  
9 Oil filler cap  
u !  
1
!o0  
t
!
3
!
3
0 Oil drain plug  
q Recoil starter  
w Fuel level gauge  
e Carrying handles (shaded)  
y
YG5200D/YG6600D  
!
3
w
q
!
2
!
3
!
3
t
u
!
3
y
!
1
e
r
!
0
o
793-065a  
YG6600DE  
!
3
!
3
w
q
!
2
t
!
3
!
3
y
!
1
e
r
!
0
o
793-066a  
10 –  
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AE00104  
EF4000DE  
CONTROL BOX  
(for EF4000DE/  
EF5200DE/EF6600DE)  
1 AC switch (N.F.B.)  
2 AC receptacle  
3 Voltage meter  
4 Oil warning light  
5 Engine switch  
6 Economy idle switch  
y
q
w
r
e
t
EF5200DE  
w
q
r
e
y
t
EF6600DE  
q
r
w
e
y
t
793-067  
11 –  
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AE00104  
YG4000D  
CONTROL BOX  
(for YG4000D/  
YG5200D/YG6600D/  
YG6600DE)  
y u t  
q
q
w
e
1 AC switch (N.F.B.)  
2 G.F.C.I. receptacle  
3 AC receptacle  
4 Voltage meter  
(for YG5200D/  
YG6600D/YG6600DE)  
5 Oil warning light  
6 Engine switch  
7 Economy idle switch  
8 Starter switch  
(for YG6600DE)  
9 Pilot light  
o
t
YG5200D  
(for YG4000D)  
r
q w  
e
q
u
y
YG6600D  
t
r
q
w
e
q
u
y
793-068  
YG6600DE  
y t  
r
e
q
q w  
u
i
793-069  
12 –  
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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.  
700-027c  
AE00121  
A
ENGINE SWITCH  
q
The engine switch controls the ignition system.  
e
w
1
7
ON”  
Ignition circuit is switched on.  
The engine can be started.  
2
5
STOP”  
763-119  
Ignition circuit is switched off.  
The engine will not run.  
B
3
6
START”  
q
w
Starting circuit is switched on.  
The starter motor starts.  
å EF4000DE/EF5200DE/EF6600DE  
YG4000D/YG5200D/YG6600D/YG6600DE  
763-121a  
cC  
Take your hand off the switch immediately after  
the engine starts.  
AE00920  
STARTER SWITCH (for YG6600DE)  
The starter switch controls the following item.  
Push:  
763-011  
Starting circuit is switched on.  
Release:  
Starting circuit is switched off.  
cC  
Take your hand off the switch immediately after  
the engine starts.  
13 –  
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AE00863  
A
B
AC SWITCH (N.F.B.)  
q
The AC switch (Non-Fuse Breaker) turns off automati-  
cally when the load exceeds the generator rated out-  
put.  
q
q
w
w
w
1
2
I
3
ON”  
OFF”  
763-193a  
å EF4000DE/YG4000D  
C-1  
C-2  
EF5200DE/EF6600DE/YG5200D/YG6600D/YG6600DE  
q
C-1  
Supplies AC 120V (EF4000DE/YG4000D)  
q
C-2  
Supplies AC 120V (EF5200DE/EF6600DE/YG5200D/  
YG6600D/YG6600DE)  
Supplies AC 120V and 240V (EF4000DE/YG4000D)  
Supplies AC 120V and 240V (EF5200DE/EF6600DE/  
YG5200D/YG6600D/YG6600DE)  
w
w
q
D-1  
D-2  
763-194d  
D-1  
D-2  
cC  
q
q
q
Reduce the load to the specified generator rated  
output if the AC switch (N.F.B.) turns off. If it turns  
off again, consult a Yamaha dealer.  
763-195a  
763-124a  
779-017  
AE00142  
ECONOMY IDLE SWITCH  
When the economy idle switch is turned to "ON", the  
engine speed is automatically reduced to idle when  
the generator load is reduced to 0.8 A or less. The  
results are better fuel consumption and less noise.  
q
w
1
2
I
3
ON”  
OFF”  
240V  
GR  
NOTE:  
Y
G
120V  
The economy idle switch must be turned to "OFF" to  
increase engine speed to rated rpm when:  
- using a load of 0.8 A or less.  
W
X
120V  
- supplying AC 120V only from W with X.  
14 –  
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AE00791  
VOLTAGE ADJUSTER  
(for EF5200DE/EF6600DE)  
The adjuster is equipped for adjusting output voltage  
to rated voltage.  
NOTE:  
779-039  
Turn the adjuster clockwise or counterclockwise to  
increase or decrease output voltage.  
779-037  
AE00848  
q
G.F.C.I. RECEPTACLE  
(for YG4000D/YG5200D/YG6600D/YG6600DE)  
The G.F.C.I. (Ground Fault Circuit Interrupter) 1 shuts  
off power to the protected receptacles if a ground fault  
(electrical leak) is detected.  
If the reset button 2 pops 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.  
w
763-083  
e
763-060  
w
TO REDUCE THE CHANCE OF ELECTRICAL  
SHOCK:  
9 Do not attempt to operate equipment if the  
ground fault circuit interrupter reset button  
pops out repeatedly during use.  
9 Test the ground fault circuit interrupter during  
the pre-operation checks according to the  
maintenance instructions on page 35.  
9 Remember that only receptacles labeled  
GFCIhave ground fault circuit interrupter  
protection.  
15 –  
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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.  
741-001  
AE00856  
FUEL  
Make sure there is sufficient fuel in the tank.  
Recommended fuel:  
Unleaded gasoline  
Fuel tank capacity:  
q
707-033a  
Total:  
EF4000DE/YG4000D:  
18.5 L (4.07 Imp gal, 4.89 US gal)  
EF5200DE/EF6600DE/YG5200D/YG6600D/  
YG6600DE:  
21.0 L (4.62 Imp gal, 5.55 US gal)  
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.  
707-001  
1 Fuel level gauge  
F”  
E”  
Full  
Empty  
707-037  
707-051  
16 –  
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w
9 Fuel is highly flammable and poisonous.  
Check SAFETY INFORMATION(See page 6)  
carefully before refueling.  
9 Do not fill above the top of the fuel filter or it  
may overflow when the fuel heats up later and  
expands.  
9 Wipe up any spilled fuel immediately.  
9 After refueling, make sure the tank cap is tight-  
ened securely.  
AE00222  
ENGINE OIL  
Make sure the engine oil is at the upper level of the oil  
filler hole.  
Add oil as necessary.  
1 Upper level  
700-068  
Recommended oil:  
å
YAMALUBE 4 (10W-30) or SAE 10W-30  
type SE motor oil  
SAE #30  
SAE #20  
q
ç
SAE 10W  
700-110  
Engine oil quantity:  
EF4000DE/YG4000D:  
0°C  
25°C  
1.0 L (0.88 lmp qt, 1.06 US qt)  
EF5200DE/EF6600DE/YG5200D/YG6600D/  
YG6600DE:  
A YAMALUBE 4(10W-30)  
D SAE 10W  
C SAE #20  
B SAE #30  
1.1 L (0.97 lmp qt, 1.16 US qt)  
32°F  
80°F  
700-065  
NOTE:  
Recommended engine oil classification:  
API Service SEor SF.  
cC  
The generator has been shipped without engine  
oil. Fill with oil or it will not start.  
700-006  
17 –  
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AE00241  
A
GROUND (Earth)  
Make sure to ground (earth) the generator.  
Check "SAFETY INFORMATION" on page 7.  
å EF4000DE/YG4000D  
741-061  
EF5200DE/EF6600DE/YG5200D/YG6600D/YG6600DE  
B
741-066  
AE00231  
BATTERY  
(for EF4000DE/EF5200DE/EF6600DE/YG6600DE)  
(See page 34 for more details)  
Check the fluid level and fill if necessary.  
Use only distilled water if refilling is necessary.  
Installation  
830-002a  
1. Turn the engine switch to the "STOP" position to  
prevent accidental short circuiting.  
2. Install the battery on the battery mount tray  
securely.  
w
q
NOTE:  
Clamp the red wire to the positive (+) terminal first,  
then the black wire to the negative () terminal of the  
battery. Do not reverse these positions.  
762-004  
w
Be sure to service battery leads to prevent arcing  
when the battery is not installed.  
e
9 Disconnect the battery charging output lead.  
Then insulate the generator side connector by  
folding it back on itself and carefully wraping it  
with electrical tape to prevent electrical con-  
tact with ground (earth) or any other leads.  
9 Remove the battery leads from the generator.  
q
762-005  
1 Connector  
2 Battery leads  
3 Electrical tape  
18 –  
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AE00955  
OPERATION  
NOTE:  
q
The generator has been shipped without engine oil.  
Fill with oil or it will not start.  
700-006a  
1 Upper level  
AE00918  
STARTING THE ENGINE  
q
NOTE:  
9 Before starting the engine, do not connect any  
electric devices.  
9 Turn the AC switch (N.F.B.) and economy idle  
switch to the OFFposition.  
761-047  
A
B
1
3
OFF”  
å AC switch (N.F.B.) for EF4000DE/YG4000D  
AC switch (N.F.B.) for EF5200DE/EF6600DE/YG5200D/  
YG6600D/YG6600DE  
120V  
q
q
240V  
q
q
763-196b  
ç Economy idle switch  
C
q
763-126b  
1. Turn the fuel cock lever to the ONposition.  
1 ON”  
q
705-037  
2. Turn the engine switch to the ONposition.  
A
B
q
q
1
7
ON”  
å EF4000DE/EF5200DE/EF6600DE  
YG4000D/YG5200D/YG6600D/YG6600DE  
763-127c  
19 –  
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Electric Starting Model:  
(for EF4000DE/EF5200DE/EF6600DE)  
3. Turn the engine switch to START.  
q
1
6
START”  
763-120a  
(for YG6600DE)  
3. Push the starter switch to start the engine.  
1 Starter switch  
cC  
9 Take your hand off the switch immediately  
after the engine starts.  
q
763-011a  
9 If the engine fails to start, release the switch,  
wait a few seconds, then try again. Each  
attempt should be as short as possible to pre-  
serve the battery. Do not crank the engine  
more than 10 seconds on any one attempt.  
Manual Starting Model:  
(for YG4000D/YG5200D/YG6600D)  
3. Turn the choke lever to the 1position.  
A
1 Choke lever  
å YG4000D  
q
YG5200D/YG6600D  
701-033b  
NOTE:  
B
The choke is not required to start a warm engine. Turn  
the choke lever to the operating position.  
q
701-025c  
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.  
704-010  
20 –  
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A
NOTE:  
Especially in areas below freezing point, keep the  
choke lever at the halfway position until the engine is  
warmed up.  
q
6. When the engine is warm, turn the choke lever  
back to the operating position (fully to the left).  
701-033c  
B
1 Operating position  
q
å YG4000D  
YG5200D/YG6600D  
701-025d  
AE00970  
APPLICATION RANGE  
AC  
0.40.75  
(Efficiency 0.85)  
Power factor  
1
0.80.95  
EF4000DE/YG4000D  
EF5200DE/YG5200D  
3,500W  
4,500W  
2,800W  
3,600W  
1,190W  
1,530W  
EF6600DE  
YG6600D  
YG6600DE  
6,000W  
4,800W  
2,040W  
NOTE:  
9 “–” means below.  
9 Application wattage indicates when each device is used by itself.  
cC  
Be sure the total load is within generator rated output otherwise generator dam-  
age 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 pro-  
vide power to such equipment.  
21 –  
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AE00949  
CONNECTION  
Alternating Current (AC)  
cC  
9 Be sure all electric devices including the lines  
and plug connections are in good condition  
before connection to the generator.  
9 Be sure any electric devices are turned off  
before plugging it in.  
761-006  
9 Be sure the total load is within generator rated  
output.  
9 Be sure the receptacle load current is within  
receptacle rated current.  
761-046  
1. Wind the power lead 2 or 3 turns around frame.  
2. Start the engine.  
A
B
3. Plug into AC receptacle.  
4. Make sure the voltage meter indicates the rated  
voltage (except for YG4000D) or the pilot light is  
on (for YG4000D).  
779-032a  
779-039a  
763-194e  
å Voltage meter  
Pilot light  
If the voltage meter does not indicate the rated volt-  
age, adjust output voltage to rated voltage (for  
EF5200DE/EF6600DE).  
q
1 Voltage adjuster  
NOTE:  
Turn the adjuster clockwise or counterclockwise to  
increase or decrease output voltage.  
A-1  
A-2  
q
q
5. Turn the AC switch (N.F.B.) and economy idle  
switch to the ONand turn on any electric  
devices.  
1
I
ON”  
B-1  
B-2  
A-1  
AC120V can be used. (EF4000DE/YG4000D)  
AC120V can be used. (EF5200DE/EF6600DE/  
YG5200D/YG6600D/YG6600DE)  
A-2  
q
q
q
q
B-1  
B-1  
AC120V and 240V can be used. (EF4000DE/YG4000D)  
AC120V and 240V can be used. (EF5200DE/  
EF6600DE/YG5200D/YG6600D/YG6600DE)  
763-195a  
22 –  
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For YG4000D, YG5200D and YG6600D(E), also turn  
C
the individual AC switch (N.F.B.) to the ONposition.  
q
1
I
ON”  
ç Individual AC switch (YG4000D)  
763-210  
Individual AC switch (YG5200D and YG6600D(E))  
D
q
763-211  
cC  
240V  
Reduce the load to the specified generator rated  
output if an AC switch turns off. If it turns off  
again, consult a Yamaha dealer.  
GR  
Y
G
120V  
W
X
120V  
NOTE:  
779-017  
9 The 4-blade plug receptacle can supply both 120V  
and 240V power sources.  
E
9 The economy idle switch must be turned to OFF”  
to increase engine speed to rated rpm when:  
- using a load of 0.8A or less.  
q
- supplying AC120V only from W with X.  
763-129a  
´ Economy idle switch  
1
I
ON”  
23 –  
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AE00840  
STOPPING THE ENGINE  
NOTE:  
9 Turn off any electric devices.  
9 Turn the AC switch (N.F.B.) and economy idle  
switch to the OFFposition.  
1
3
OFF”  
A
B
å AC switch (N.F.B.) (for EF4000DE/YG4000D)  
AC switch (N.F.B.) (for EF5200DE/EF6600DE/YG5200D/  
YG6600D/YG6600DE)  
120V  
q
q
240V  
q
q
763-196b  
ç Economy idle switch  
C
q
763-126b  
1. Disconnect any electric devices.  
q
761-047  
2. Turn the engine switch to the STOPposition.  
A
B
1
5
STOP”  
q
å EF4000DE/EF5200DE/EF6600DE  
YG4000D/YG5200D/YG6600D/YG6600DE  
q
763-130b  
3. Turn the fuel cock lever to OFF.  
1 OFF”  
q
705-038  
24 –  
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AE00401  
PERIODIC MAINTENANCE  
AE00403  
MAINTENANCE CHART  
Regular maintenance is most important for best performance and safe operation.  
w
Stop the engine before starting maintenance work.  
Initial  
Every  
6
Pre-Ope-  
ration  
1
3
12  
No.  
Item  
Remarks  
check  
month  
months months months  
(daily)  
or 20 Hr or 50 Hr or 100 Hr or 300 Hr  
Check condition.  
Adjust gap and  
clean. Replace if  
necessary.  
**  
1. Spark Plug  
0
Check and adjust  
when engine is  
cold.  
**  
2.* Valve Clearance  
0
Check breather  
hose for cracks or  
damage. Replace  
if necessary.  
**  
Crankcase  
3.*  
0
0
breather system  
Check and adjust  
engine idle speed.  
**  
4.* Idle speed  
Check for leakage.  
Retighten or  
*replace gasket  
if necessary.  
0
**  
5. Exhaust System  
Check muffler  
screen and spark  
arrester. Clean/  
replace if  
0
necessary.  
Check oil level  
Replace  
0
6. Engine Oil  
0
0
0
Clean.  
Replace if  
necessary.  
**  
7. Air Filter  
0
Clean fuel cock  
and fuel tank  
filter. Replace if  
necessary.  
8. Fuel Filter  
*
: It is recommended that these items be serviced by a Yamaha dealer.  
** : Related to emission control system.  
25 –  
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Initial  
Every  
6
Pre-Ope-  
ration  
1
3
12  
No.  
Item  
Remarks  
check  
month  
months months months  
(daily)  
or 20 Hr or 50 Hr or 100 Hr or 300 Hr  
Check fuel hose  
for crack or da-  
mage. *Replace  
if necessary.  
9. Fuel Line  
0
0
**Choke lever  
for YG4000D  
Check choke  
YG5200D operation.  
10.  
YG6600D  
Check for fan  
damage.  
11. Cooling System  
12. Starting System  
0
0
Check recoil  
starter operation.  
0
More frequently  
if necessary.  
**  
13.*  
Decarbonization  
Check the voltage  
meter indication or  
pilot light.  
14. Generation  
G.F.C.I. receptacle  
0
0
for YG4000D  
YG5200D  
Check operation  
*Repair if  
necessary.  
.
15.  
YG6600D  
YG6600DE  
Check all fittings  
and fasteners.  
Correct if  
Fittings/  
Fasteners  
16*  
17.  
0
necessary.  
Check battery fluid  
level. Add distilled  
water.  
0
Battery  
for EF4000DE  
EF5200DE  
*Check specific  
gravity and brea-  
ther pipe ope-  
ration. Correct if  
necessary.  
EF6600DE   
YG6600DE  
0
: It is recommended that these items be serviced by a Yamaha dealer.  
: Related to emission control system.  
*
**  
cC  
Use only Yamaha specified genuine parts for replacement. Ask an authorized  
Yamaha dealer for further attention.  
26 –  
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AE00971  
SPARK PLUG INSPECTION  
You should periodically remove and inspect the spark  
plug.  
1. Check for discoloration and remove the carbon.  
Standard electrode color:  
Tan Color  
760-011  
2. Check the spark plug type and gap.  
Standard Spark Plug:  
BPR4ES (NGK)  
Spark Plug Gap:  
a
0.70.8 mm (0.0280.031 in)  
760-001a  
a Gap  
3. Install the spark plug.  
Spark Plug Torque:  
20 Nm (2 kgfm, 14 lbfft)  
AE00431  
CARBURETOR ADJUSTMENT  
The carburetor is a vital part of the engine. Adjusting  
should be left to a Yamaha dealer with the profession-  
al knowledge, specialized data, and equipment to do  
so properly.  
– 27 –  
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AE00972  
ENGINE OIL REPLACEMENT  
1. Place the machine on a level surface and warm  
up the engine for several minutes.  
Then stop the engine.  
2. Remove the oil filler cap.  
3. Place an oil pan under the engine. Remove the oil  
drain plug so that the oil can be completely  
drained.  
e
4. Check the drain plug, gasket, oil filler cap and O-  
ring.  
If damaged, replace.  
w
1 Oil drain plug  
2 Gasket  
q
700-067  
3 O-ring  
5. Reinstall the oil drain plug.  
Drain Plug Torque:  
30 Nm (3.0 kgfm, 22 lbfft)  
6. Add engine oil to the upper level.  
1 Upper level  
Recommended oil:  
q
å
YAMALUBE 4 (10W-30) or SAE 10W-30  
type SE motor oil  
SAE #30  
SAE #20  
ç
700-006a  
SAE 10W  
0°C  
Engine oil quantity:  
25°C  
EF4000DE/YG4000D:  
A YAMALUBE 4(10W-30)  
1.0 L (0.88 Imp qt, 1.06 US qt)  
EF5200DE/EF6600DE/YG5200D/YG6600D/  
YG6600DE:  
D SAE 10W  
C SAE #20  
B SAE #30  
32°F  
80°F  
1.1 L (0.97 lmp qt, 1.16 US qt)  
700-065  
NOTE:  
Recommended engine oil classification:  
API Service SEor SF.  
cC  
Be sure no foreign material enters the crankcase.  
28 –  
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AE00914  
A
AIR FILTER  
1. Remove the air filter cover and element.  
2. Wash the element in solvent and dry.  
3. Oil the element and squeeze out excess oil.  
The element should be wet but not dripping.  
q
Recommended oil:  
Foam-air-filter oil  
or  
SAE #20 motor oil  
cC  
Do not wring out the element.  
This could cause it to tear.  
NOTE:  
For EF4000DE/YG4000D, the dry foam urethane  
(sponge) 1 is installed to absorb any excessive oil  
that comes out of the air filter element. Therefore do  
not apply oil to the sponge 1. If it gets oily, squeeze  
out the oil.  
710-058a  
B
4. Insert the element into the air filter.  
NOTE:  
Be sure the element sealing surface matches the air  
filter so there is no air leak.  
cC  
The engine should never run without the element;  
excessive piston and cylinder wear may result.  
w
Never use solvent while smoking or in the vicinity  
of an open flame.  
å EF4000DE/YG4000D  
EF5200DE/EF6600DE/YG5200D/YG6600D/YG6600DE  
710-037a  
29 –  
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AE00461  
FUEL COCK  
w
Never use or be near fuel and solvent while smok-  
ing or in the vicinity of an open flame.  
1. Stop the engine.  
2. Turn the fuel cock lever to OFF.  
3. Remove the fuel cock cup and gasket.  
4. Clean the cup with solvent and wipe it off.  
5. Check the gasket. Replace it if damaged.  
6. Reinstall the gasket and fuel cock cup.  
w
Be sure the fuel cock cup is tightened securely.  
705-065a  
AE00471  
FUEL TANK FILTER  
1. Remove the fuel tank cap and filter.  
q
1 Filter  
2. Clean the filter with solvent.  
If damaged, replace.  
3. Wipe the filter and insert it.  
w
Be sure the tank cap is tightened securely.  
707-043b  
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AE00443  
MUFFLER SCREEN AND SPARK ARRESTER  
(For EF4000DE/YG4000D)  
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.  
741-001  
A
B
q
q
1. Remove the muffler screen.  
1 Muffler screen  
2 Screw  
w
w
711-055  
å EF4000DE  
YG4000D  
2. Use a flathead screw driver to pry the spark  
arrester out from the muffler.  
711-012b  
3. Remove the spark arrester.  
q
1 Spark arrester  
711-012d  
4. Remove the carbon deposits on the muffler  
screen and spark arrester using a wire brush.  
711-022  
cC  
When cleaning, use the wire brush lightly to avoid  
damaging or scratching of the muffler screen and  
spark arrester.  
711-050  
31 –  
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5. Check the muffler screen and spark arrester.  
Replace them if damaged.  
6. Install the spark arrester.  
w
q
NOTE:  
Align the spark arrester projection with the hole in the  
muffler pipe.  
711-012a  
1 Projection  
2 Hole  
A
B
7. Install the muffler screen.  
å EF4000DE  
YG4000D  
711-057  
AE00841  
MUFFLER SCREEN AND SPARK ARRESTER  
(For EF5200DE/EF6600DE/YG5200D/YG6600D/  
YG6600DE)  
w
The engine and muffler will be very hot after the  
engine has been run.  
741-001  
Avoid touching the engine and muffler while they  
are still hot with any part of your body or clothing  
during inspection or repair.  
q
1. Remove the muffler protector and muffler screen.  
1 Muffler protector  
2 Muffler screen  
3 Screw  
711-056  
e
w
2. Use a flathead screw driver to pry the spark  
arrester out from the muffler.  
711-028  
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3. Remove the spark arrester.  
q
1 Spark arrester  
711-029  
4. Remove the carbon deposits on the muffler  
screen and spark arrester using a wire brush.  
711-022  
cC  
When cleaning, use the wire brush lightly to avoid  
damaging or scratching of the muffler screen and  
spark arrester.  
5. Check the muffler screen and spark arrester.  
Replace them if damaged.  
711-050  
6. Install the spark arrester.  
w
q
NOTE:  
Align the spark arrester projection with the hole in the  
muffler pipe.  
1 Projection  
2 Hole  
711-029a  
7. Install the muffler screen and muffler protector.  
711-027a  
33 –  
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AE00842  
BATTERY  
(for EF4000DE/EF5200DE/EF6600DE/YG6600DE)  
Replenishing the battery fluid  
1. Check the fluid level. The level should be between  
the upper and lower level marks.  
762-039  
1 Upper level  
2 Lower level  
q
w
2. Add only distilled water if necessary.  
cC  
9 Normal tap water contains minerals which are  
harmful to a battery; therefore, refill only with  
distilled water.  
762-001a  
9 Do not disconnect the battery during engine  
operation.  
9 Avoid operating the generator with the battery  
removed.  
762-002  
w
Battery electrolyte is poisonous and dangerous,  
causing severe burns, etc. It contains sulfuric (sul-  
phuric) 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 veg-  
etable oil. Call physician immediately.  
Eyes: Flush with water for 15 minutes and get  
prompt medical attention. Batteries produce explo-  
sive gases. Keep sparks, flame, cigarettes, etc.  
away. Ventilate when charging or using in closed  
space. Always cover eyes when working near bat-  
teries. KEEP OUT OF REACH OF CHILDREN.  
762-012  
34 –  
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AE00895  
FUSE REPLACEMENT  
(for EF4000DE/EF5200DE/EF6600DE/YG6600DE)  
w
Be sure to use specified fuse. A wrong fuse will  
cause electrical system damage and A FIRE HAZ-  
ARD.  
cC  
Be sure the engine switch is turned off to prevent  
accidental short circuiting.  
1. Loosen the control panel screws and then remove  
779-033a  
the control panel.  
2. Replace the blown fuse with one of proper amper-  
age.  
Specified fuse: 10A  
NOTE:  
If the fuse immediately blows again, consult a Yamaha  
dealer.  
779-034a  
AE00501  
G.F.C.I. RECEPTACLE TEST  
(for YG4000D/YG5200D/YG6600D/YG6600DE)  
1. Start the engine.  
2. Turn the AC switch (N.F.B.) to the ONposition.  
3. Press the test button 1, then check the position of  
the reset button 2.  
w
q
763-083a  
G.F.C.I. Reset  
G.F.C.I. Receptacle  
Button Position  
Operation  
e
r
after Test  
Pop Out 3  
Stay In 4  
Correct  
Incorrect  
763-059  
4. If G.F.C.I. operation is correct, push in the reset  
button.  
If the G.F.C.I. operates incorrectly, consult a  
Yamaha dealer.  
w
Do not operate the generator with a faulty G.F.C.I.  
circuit. Electric shock could occur. Have the gen-  
erator repaired by a qualified mechanic.  
35 –  
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AE00512  
TROUBLESHOOTING  
Engine won’t start  
1. Fuel systems  
No fuel supplied to combustion chamber.  
2 No fuel in tank .... Supply fuel.  
2 Clogged fuel line .... Clean fuel line.  
2 Foreign matter in fuel cock .... Clean fuel cock.  
2 Clogged carburetor .... Clean carburetor.  
707-001  
705-037a  
2. Engine oil system  
Insufficient  
2 Oil level is low .... Add engine oil.  
700-006  
3. Electrical systems  
A
B
2 Engine switch to ON.  
Poor spark  
2 Spark plug dirty with carbon or wet .... Remove  
carbon or wipe spark plug dry.  
2 Faulty ignition system .... Consult dealer.  
763-127d  
4. Compression  
Insufficient  
2 Worn out piston and cylinder .... Consult dealer.  
2 Loose cylinder head nuts .... Tighten nuts proper-  
ly.  
2 Damaged gasket .... Replace gasket.  
760-009  
36 –  
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AE00515  
FOR EF4000DE/EF5200DE/EF6600DE/YG6600DE  
A
ENGINE DOES NOT START  
B
Turn the engine switch to ON, then turn  
the engine switch to START(for  
EF4000DE/EF5200DE/EF6600DE) or  
push the starter switch (for YG6600DE).  
And check if the starter motor cranks.  
763-213  
C
Cranks  
D
Does not crank  
F
Turn the engine switch to STARTor  
push the starter switch, and check if the  
oil warning light flickers.  
G
Does not flicker  
H
Flickers  
L
Turn the engine switch to STARTor  
push the starter switch, and check the  
spark plug for spark strength.  
(See WARNING).  
w
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 way as possible from  
the spark plug hole and car-  
buretor area.  
9 To prevent ELECTRIC SHOCK  
do not hold spark plug lead  
with hand while testing.  
M
R
Engine does not start.  
Check the following  
N
Engine starts.  
U
Clean or Replace; Consult a  
S
T
Clogged  
OK  
Yamaha dealer.  
9 Fuel cock clogging  
9 Air cleaner element  
clogging.  
V
Consult a Yamaha dealer.  
37 –  
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E
Faulty battery and/or starter motor.  
Consult a Yamaha dealer.  
I
Check engine oil level.  
J
OK  
Consult a  
Yamaha dealer.  
K
Level low  
Add engine oil.  
O
Check the spark plug.  
9 Type:  
9 Gap:  
P
Incorrect  
Replace or  
Adjust Gap.  
Q
OK  
Clean the spark  
plug.  
38 –  
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AE00515  
FOR YG4000D/YG5200D/YG6600D  
A
ENGINE DOES NOT START  
B
Turn the engine switch to ON, then pull  
the recoil starter and check if the oil warn-  
ing light flickers.  
E
F
Check engine oil level.  
OK  
Consult a  
Yamaha dealer.  
G
Level low  
C
H
Does not flicker  
D
Flickers  
Add engine oil.  
Pull the recoil starter and check the spark  
plug for spark strength.  
(See WARNING)  
K
Check the spark plug.  
9 Type:  
9 Gap:  
L
Incorrect  
Replace or  
Adjust Gap.  
M
OK  
w
9 To prevent FIRE HAZARDS be  
sure fuel is not present in the  
spark plug area.  
Clean the spark  
plug.  
9 To prevent FIRE HAZARDS be  
sure to place the spark plug as  
far way 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.  
Engine does not  
start.  
I
J
Engine starts.  
N
Q
R
Check the following  
Clean or Replace; Consult a  
Yamaha dealer.  
O
P
Clogged  
OK  
9 Fuel cock clogging  
9 Air cleaner element  
clogging.  
Consult a Yamaha dealer.  
39 –  
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AE00601  
STORAGE  
q
å
Long term storage of your machine will require some  
preventive procedures to guard against deterioration.  
AE00611  
DRAIN THE FUEL  
1. Drain the fuel tank, fuel cock, and carburetor float  
a
bowl.  
a Carburetor drain plug  
w
2. Pour a cup of SAE 10W30 or 20W40 motor oil into  
a
the tank.  
3. Shake the tank to coat the inner surfaces thor-  
oughly.  
4. Drain off the excess oil.  
r
e
å EF4000DE/EF5200DE/YG4000D/YG5200D  
EF6600DE/YG6600D/YG6600DE  
707-084  
AE00621  
ENGINE  
1. Remove the spark plug, pour about one table-  
spoon of SAE 10W30 or 20W40 motor oil into the  
spark plug hole and reinstall 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.  
712-010  
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AE00633  
BATTERY  
(for EF4000DE/EF5200DE/EF6600DE/YG6600DE)  
1. Remove the battery.  
2. Check the fluid level. Add only distilled water if  
necessary. (See page 34; BATTERY-  
Replenishing the battery fluid)  
762-003  
3. After checking the fluid level, charge the battery.  
4. Store the battery in a cool, dark and dry place and  
charge it once a month.  
Do not store the battery in an excessively warm or  
cold place [i.e., less than 0°C (30°F) or more than  
30°C (90°F)].  
w
9 Disconnect the negative lead first, then the  
positive lead from the battery.  
9 Connect the positive lead first, then the nega-  
tive lead to the battery when installing the bat-  
tery.  
9 Never smoke or make and break connections  
at the battery while charging. Sparks may  
ignite the battery gas.  
9 Be sure the battery terminals are tight and that  
the battery vent tube is properly routed and is  
securely attached to the battery.  
cC  
9 Do not disconnect the battery during engine  
operation.  
9 Avoid operating the generator with the battery  
removed.  
AE00632  
RECOMMENDED BATTERY  
(for EF4000DE/EF5200DE/EF6600DE/YG6600DE)  
Recommended battery:  
Capacity: 12V/26Ah  
NOTE:  
9 Clamp the red wire to the positive (+) terminal and  
the black wire to the negative () terminal of the  
battery. Do not reverse these positions.  
9 Be sure the battery is installed on the battery  
mount tray securely.  
41 –  
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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 OFF-  
ROAD ENGINES.  
The acronyms conform to the latest version of the SAEs recommended practice docu-  
ment J1930, Diagnostic Acronyms, Terms, and Definitions For Electrical/Electronic  
System.  
It is recommended that these items be serviced by a Yamaha dealer.  
42 –  
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AE00701  
SPECIFICATIONS  
AE00702  
DIMENSIONS  
Unit EF4000DEEF5200DEEF6600DE YG4000D YG5200D YG6600D YG6600DE  
Overall Length mm (in) 804 (31.7) 894 (35.2) 894 (35.2) 580 (22.8) 670 (26.4) 670 (26.4) 894 (35.2)  
Overall Width mm (in) 525 (20.7) 520 (20.5) 520 (20.5) 525 (20.7) 510 (20.1) 510 (20.1) 520 (20.5)  
Overall Height mm (in) 510 (20.1) 510 (20.1) 510 (20.1) 560 (22.0) 560 (22.0) 560 (22.0) 560 (22.0)  
Dry Weight  
kg (lb) 66 (145.5) 90 (198.4) 90 (198.4) 60 (132.3) 85 (187.3) 85 (187.3) 92 (202.8)  
AE00704  
ENGINE  
EF6600DE/  
YG6600D/  
YG6600DE  
EF4000DE/  
YG4000D  
EF5200DE/  
YG5200D  
Unit  
Type  
Air cooled 4-stroke gasoline OHV  
Inclined, 1 cylinder  
301  
Cylinder Arrangement  
Displacement  
Bore × Stroke  
cm3  
251  
357  
mm (in)  
75.0 × 57.0  
78.0 × 63.0  
(3.07 × 2.48)  
85.0 × 63.0  
(3.35 × 2.48)  
(2.95 × 2.24)  
Rated Output  
Operation Hours  
Fuel  
kW (HP)/r/min  
Hr  
4.5 (6.1)/3600  
5.8 (7.8)/3600  
7.1 (9.5)/3600  
8.5  
7.6  
6.6  
Unleaded gasoline  
Fuel Tank Capacity L (Imp gal, US gal) 18.5 (4.07, 4.89)  
21.0 (4.62, 5.55)  
1.1 (0.97, 1.16)  
Engine Oil Quantity L (Imp qt, US qt)  
Ignition System  
1.0 (0.88, 1.06)  
TCI  
Spark Plug: Type  
BPR4ES (NGK)  
0.70.8 (0.0280.031)  
73  
Gap  
mm (in)  
dB (A)  
Noise Level*  
69  
74  
* : Measured at rated operation from 7 m (23 ft) distance.  
AE00707  
GENERATOR  
Unit EF4000DE EF5200DE EF6600DE YG4000D YG5200D YG6600D YG6600DE  
AC Output  
Rated voltage  
Rated frequency  
Rated current  
Rated output  
Safety Device: Type  
V
Hz  
A
120/240  
60  
29.2/14.6 37.5/18.8 50.0/25.0 29.2/14.6 37.5/18.8 50.0/25.0 50.0/25.0  
kVA  
3.5  
4.5  
6.0  
3.5  
4.5  
6.0  
6.0  
N.F.B.  
43 –  
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AE00751  
WIRING DIAGRAM  
EF4000DE  
G/Y  
y
L
L
R
L
R
R
L
R
G/Y  
G/Y  
R
G/Y  
R
R
R
t
V
G/Y  
Br  
Br  
u
i
o
Br  
Br  
Br  
y
B
Br  
Br  
q
Br  
e
!
!
B/W Br  
!
B
B
R
R
G
G
Y
L/W  
L/W  
G
G
OFF  
ON  
Y
G
G
START  
W
W
G
G
W
G
W
G
W
G
W
G
Br  
W
W
B/W  
!
R/B  
B
!
!
!
B
R
r
@
!
B/W R/W Br  
R/W  
B
B
Br  
R
!
G
Y
B/W  
B/W  
Y
W
R
B/W B/W  
w
R
G/R  
L
Y
B/W  
B
R
R/W  
R
W
G/R  
R
R
R
B/W R/B  
R/W  
B/W  
Br  
B
B
Y
Y
Y
L  
!
W
B/W  
R/W  
W
G/R  
L/W  
W
W
Y
G/R  
Y
B
L/W  
B
Y
W
Y
L/W  
L/W  
G/R  
G/R  
B
RR  
G/R  
G/R  
B
B  
B
B/W  
W
R
R/W  
@
@
@
-
+
@
@
M
@
@
770-030  
Color code  
1 Rotor assembly  
2 Stator assembly  
3 Main coil  
4 Sub coil  
5 Voltage meter  
6 N.F.B.  
7 AC receptacle  
8 AC receptacle  
9 AC receptacle  
0 Engine switch  
q Remote control terminal  
w Rectifier  
t Condenser  
B
Black  
y Economy idle unit  
u Oil warning unit  
i Oil warning light  
o Economy idle switch  
p Solenoid valve  
a Battery  
s Carburetor heater  
d Oil level switch  
f Charging coil  
g T.C.I.unit  
Br  
G
L
Brown  
Green  
Blue  
R
W
Red  
White  
B/W Black/White  
G/R Green/White  
G/Y Green/Yellow  
L/W Blue/White  
R/W Red/White  
h Spark plug  
Y
Yellow  
e Fuse  
j Starter motor  
r Rectifier/regulator  
44 –  
Download from Www.Somanuals.com. All Manuals Search And Download.  
EF5200DE  
u
u
i
!
y
q
e
t
o
!
!
!
r
!
!
B
B/W  
R
R
Br  
OFF  
ON  
!
START  
w
B
B/W  
Br  
!
R/B  
G
Y
@
@
!
B
R
@
@
B/W R/W Br  
R/W  
R
B
B
Br  
R
B/W B/W  
B
B/W R/W R/B Br  
R
B
B/W  
R
R/W  
Y
Y
!
G/R  
L/W  
B
G/R  
L/W  
B
G/R G/R  
B
B
L/W  
Y
Y
L/W  
Y
Y
@
R
R/W  
@
@
@
#
-
+
M
@
@
770-031  
Color code  
1 Rotor assembly  
2 Stator assembly  
3 Main coil  
4 Sub coil  
5 Exciter coil  
u AVR  
i Condenser  
o Economy idle unit  
p Oil warning unit  
a Oil warning light  
B
Black  
Br  
G
L
Brown  
Green  
Blue  
R
W
Red  
White  
6 Voltage meter  
7 N.F.B.  
8 AC receptacle  
9 AC receptacle  
0 AC receptacle  
q Engine switch  
s Economy idle switch  
d Solenoid valve  
f Battery  
g Carburetor heater  
h Oil level switch  
j Charging coil  
k T.C.I.unit  
B/W Black/White  
G/R Green/White  
G/Y Green/Yellow  
L/W Blue/White  
R/W Red/White  
w Remote control terminal  
e Rectifier  
Y
Yellow  
l Spark plug  
r Fuse  
; Starter motor  
t Rectifier/regulator  
y Voltage adjuster  
45 –  
Download from Www.Somanuals.com. All Manuals Search And Download.  
EF6600DE  
u
u
L
R
G/Y  
R
G/Y  
G/Y  
R
L
i
!
y
q
r
o
e
t
Br  
Br  
Br  
G/Y  
!
B
!
!
!
!
B
B/W  
R
R/W L/R  
Y
OFF  
ON  
START  
!
B
B/W  
R
R/W L/R  
Y
w
!
R/B  
@
G
Y
@
!
B
R
@
@
B/W B/W  
R/W R/W  
B
R
B
R
R/W Br  
B/W  
L/R  
Y
L/R  
Y
B
B/W  
R
R/W  
Y
L/R  
R
R
B
B/W R/W R/B Br  
R
Y
Y
!
G/R  
L/W  
B
G/R  
L/W  
B
B
G/R G/R  
B
L/W  
Y
Y
L/W  
Y
Y
@
@
R
R/W  
@
@
#
#
-
+
@
M
@
770-032  
Color code  
1 Rotor assembly  
u AVR  
B
Black  
2 Stator assembly  
3 Main coil  
4 Sub coil  
5 Exciter coil  
6 Voltage meter  
7 N.F.B.  
8 AC receptacle  
9 AC receptacle  
0 AC receptacle  
q Engine switch  
i Condenser  
Br  
G
L
R
W
Brown  
Green  
Blue  
Red  
White  
o Economy idle unit  
p Oil warning unit  
a Oil warning light  
s Economy idle switch  
d Solenoid valve  
f Battery  
g Carburetor solenoid valve  
h Carburetor heater  
j Oil level switch  
k Charging coil  
B/W Black/White  
G/R Green/White  
G/Y Green/Yellow  
L/W Blue/White  
R/W Red/White  
w Remote control terminal  
e Rectifier  
Y
Yellow  
l T.C.I.unit  
r Fuse  
; Spark plug  
t Rectifier/regulator  
y Voltage adjuster  
z Starter motor  
46 –  
Download from Www.Somanuals.com. All Manuals Search And Download.  
YG4000D  
G/Y  
y
t
L
G/Y  
R
G/Y  
R
G/Y  
R
L
L
L
R
R
u
R
R
Br  
Br  
i
o
G
y
Br  
Br  
Br  
G/Y  
y
Br  
Br  
q
e
!
B
G
G
Y
L/W  
L/W  
G
G
!
Y
W
G
G
W
W
G
W
G
W
G
W
G
W
G
G
W
!
!
r
G
Y
!
w
!
!
B/W  
B/W  
Y
Y
L
Y
B/W  
B
B
B/W  
Y
Y
L
B/W  
!
L
G/R  
L/W  
W
W
L
G/R  
B
L/W  
B
L/W  
Y
Y
L/W  
Y
B
B/W  
Y
@
B
!
!
@
Color code  
1 Rotor assembly  
2 Stator assembly  
3 Main coil  
4 Sub coil  
5 Pilot light  
w Condenser  
B
Black  
Brown  
Green  
Blue  
e Economy idle unit  
r Oil warning unit  
t Oil warning light  
y Economy idle switch  
u Solenoid valve  
i Oil level switch  
o Charging coil  
p T.C.I.unit  
Br  
G
L
R
W
Red  
White  
6 N.F.B.  
7 GFCI receptacle  
8 AC receptacle  
9 AC receptacle  
0 Engine switch  
q Rectifier  
B/W Black/White  
G/R Green/White  
G/Y Green/Yellow  
L/W Blue/White  
R/W Red/White  
a Spark plug  
Y
Yellow  
47 –  
Download from Www.Somanuals.com. All Manuals Search And Download.  
YG5200D  
u
G
Gy  
L
R
L
L
G/Y  
R
G/Y  
R
G/Y  
G/Y  
R
L
i
R
R
!
R
V
y
q
r
o
o
e
R
u
Br  
t
Br  
u
Br  
Br  
Br  
B
G/Y  
Br  
Br  
!
B
G
Y
L/W  
!
Y
Y
G
G
Y
G
Y
G
G
G
G
G
B
B
!
W
W
W
G
W
G
B
B
B
B
W
W
W
W
B
Y
B
Y
R
G
R
G
w
!
!
!
!
!
B/W  
Y
Y
B/W  
B
L
Y
B/W  
B
B/W  
L
B/W  
!
G/R  
G/R  
G/R  
L/W  
B
L/W  
B
G/R  
B
B
G
/R  
L/W  
Y
Y
L/W  
Y
Y
@
@
@
@
Color code  
1 Rotor assembly  
2 Stator assembly  
3 Main coil  
e AVR  
r Condenser  
t Economy idle unit  
y Oil warning unit  
u Oil warning light  
i Economy idle switch  
o Solenoid valve  
p Oil level switch  
a Charging coil  
s T.C.I.unit  
B
Black  
Br  
G
L
Brown  
Green  
Blue  
4 Sub coil  
5 Exciter field coil  
6 Voltage meter  
7 N.F.B.  
8 GFCI receptacle  
9 AC receptacle  
0 AC receptacle  
q Engine switch  
w Rectifier  
R
W
Red  
White  
B/W Black/White  
G/R Green/White  
G/Y Green/Yellow  
L/W Blue/White  
R/W Red/White  
d Spark plug  
Y
Yellow  
48 –  
Download from Www.Somanuals.com. All Manuals Search And Download.  
YG6600D  
u
G
Gy  
L
R
L
L
G/Y  
R
G/Y  
R
G/Y  
G/Y  
R
L
i
R
R
!
R
V
y
q
r
e
R
u
o
o
Br  
t
Br  
u
Br  
Br  
Br  
B
G/Y  
Br  
Br  
!
B
G
Y
L/W  
!
Y
Y
G
G
Y
G
Y
G
G
G
G
G
B
B
!
W
W
W
G
W
G
B
B
B
B
W
W
W
W
B
Y
B
Y
R
G
R
G
w
!
!
!
!
!
B/W  
Y
Y
B/W  
B
L
Y
B/W  
B
B/W  
L
B/W  
!
G/R  
G/R  
G/R  
L/W  
B
L/W  
B
G/R  
B
B
L/W  
G/R  
Y
Y
L/W  
Y
Y
L/R  
L/R  
@
@
@
@
@
770-027  
Color code  
1 Rotor assembly  
2 Stator assembly  
3 Main coil  
e AVR  
r Condenser  
t Economy idle unit  
y Oil warning unit  
u Oil warning light  
B
Black  
Br  
G
L
Brown  
Green  
Blue  
4 Sub coil  
5 Exciter field coil  
6 Voltage meter  
7 N.F.B.  
R
W
Red  
White  
i Economy idle switch  
o Solenoid valve  
B/W Black/White  
G/R Green/White  
G/Y Green/Yellow  
L/W Blue/White  
R/W Red/White  
8 GFCI receptacle  
9 AC receptacle  
0 AC receptacle  
q Engine switch  
w Rectifier  
p Carburetor solenoid valve  
a Oil level switch  
s Charging coil  
d T.C.I.unit  
f Spark plug  
Y
Yellow  
49 –  
Download from Www.Somanuals.com. All Manuals Search And Download.  
YG6600DE  
u
G
Gy  
L
R
L
L
G/Y  
R
G/Y  
R
G/Y  
G/Y  
R
L
i
R
R
R
!
V
y
q
r
e
R
Br  
o
o
u
t
Br  
u
Br  
Br  
Br  
G/Y  
Br  
Br  
!
B
G
Y
L/W  
!
Y
Y
G
G
Y
G
Y
G
G
G
G
G
B
W
W
G
B
B
W
W
G
B
!
B
W
B
B
W
B
W
W
Y
R
G
Y
R
G
!
!
w
B
!
R/B  
!
@
@
!
B
R
@
@
R/W R/W Br  
R
R/W  
Y
Y
B/W  
W
R
G/R  
Y
L
Y
B/W  
B
G/R  
R
R
B
B
R/WR/W  
R/B  
Br  
R
B/W  
B
L/R  
W
RR/W  
B/W  
L
B/W  
R/W  
W
!
G/R  
G/R  
G/R  
L/W  
B
L/W  
B
G/G/R  
G/R  
B
B
L/W  
G/R  
B
Y
L/W  
Y
Y
Y
L/R  
L/W  
R
@
@
R
R/W  
@
@
#
-
+
M
@
K
@
770-028b  
Color code  
1 Rotor assembly  
u AVR  
B
Black  
2 Stator assembly  
3 Main coil  
4 Sub coil  
i Condenser  
Br  
G
L
Brown  
Green  
Blue  
o Economy idle unit  
p Oil warning unit  
a Oil warning light  
5 Exciter coil  
R
W
Red  
White  
6 Voltage meter  
7 N.F.B.  
s Economy idle switch  
d Solenoid valve  
f Battery  
g Carburetor solenoid valve  
h Carburetor heater  
j Oil level switch  
k Charging coil  
B/W Black/White  
G/R Green/White  
G/Y Green/Yellow  
L/W Blue/White  
R/W Red/White  
8 GFCI receptacle  
9 AC receptacle  
0 AC receptacle  
q Starter switch  
w Engine switch  
Y
Yellow  
e Remote control terminal  
r Rectifier  
l T.C.I.unit  
; Spark plug  
t Fuse  
z Starter motor  
y Rectifier/regulator  
50 –  
Download from Www.Somanuals.com. All Manuals Search And Download.  
AE00761  
AE00795  
BATTERY TRAY INSTALLATION  
(for EF4000DE/EF5200DE/EF6600DE/  
YG6600DE)  
ENGINE HANGER INSTALLATION  
(for YG4000D/YG5200D/YG6600D/  
YG6600DE)  
AE00762  
OPTIONAL PARTS INSTALLATION  
AE00763  
Two wheel kit  
51 –  
Download from Www.Somanuals.com. All Manuals Search And Download.  
MEMO —  
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MEMO —  
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PRINTED IN JAPAN  
!
03 9 08 – 1.1 × 1  
PRINTED ON RECYCLED PAPER  
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Download from Www.Somanuals.com. All Manuals Search And Download.  
Download from Www.Somanuals.com. All Manuals Search And Download.  

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