EF2800I 2.8 kVA Inverter Generator
Power Rating: 2800 W Generator Type: Inverter Rated Voltage: 230 V Frequency: 50 Hz Rated Output: 2.5 kVA Max. Output: 2.8 kVA Engine Type: 0HV Air Cooled - MZ175 Displacement: 171 cc Max. Output: 4 kW (5.5 hp) / 4000 rpm Starting System: Recoil Dimensions: 487(L) x 395(W) x 425(H) mm Dry Weight: 29 kg Fuel Tank Capacity: 11 L (full load) Operating Hours (Eco On): 17 hr (1/4 load) Noise Level: 60 dBA (1/4 load) / 67 dBA (full load) FEATURES Brushless alternator Inverter voltage regulator Auto decompressor Electronic circuit breaker system Fuel level gauge Oil level warning system Pilot lamp Noise level suppressor Economy idle system

ACCESSORIES AC plug

YAMAHA MOTOR CORPORATION U.S.A. EF- AND EDL-SERIES GENERATOR LIMITED WARRANTY
Yamaha Motor Corporation, U.S.A. hereby warrants that new Yamaha consumer generators purchased from an authorized Yamaha consumer 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 Any new EFseries or EDL-series Yamaha Generator purchased 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 workmanship 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 Yamahas option, any part adjudged defective by Yamaha due to faulty workmanship or material from the factory. Parts used in warranty repairs will be warranted for the balance of the products 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 routine maintenance. THE CUSTOMERS RESPONSIBILITY under this warranty shall be to: 1. Operate and maintain the generator as specified in the appropriate Owners Manual; 2. Give notice to an authorized Yamaha consumer 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 dealers 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 registration fee will be charged for this service. In no case will the warranty be extended beyond the original period.

10/9/03 11:53 AM Page 3

WARRANTY QUESTIONS AND ANSWERS
Q. What costs are my responsibility during the warranty period? A. The customers responsibility includes all costs of normal maintenance service, nonwarranty 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 another part to fail; and so on. If you have any specific questions on operation or maintenance, 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 Owners Manual instead of having the dealer do them? A. Yes, if you are a qualified mechanic and follow the procedures specified in the Owners 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 Owners 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 Owners 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 owners? 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 identification or other valid proof of the original date of purchase. If a question or problem arises regarding warranty, first contact the owner of the dealership. Since all warranty matters are handled at the dealer level, this person is in the best position to help you. If you are still not satisfied and require additional 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 manufacturer to maintain a complete, up-to-date list of all first purchasers against the possibility of a safetyrelated 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 postcard listing your Yamaha model name, engine number, dealer number (or dealers 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.

YAMAHA MOTOR CO., LTD

DISPLACEMENT:

VALVE LASH (A)

z.zz~z.zz
IGNITION TIMING & IDLE MIXTURE IDLE SPEED:
NO OTHER ADJUSTMENTS NEEDED. rpm AT NO LOAD

zzzz~zzzz

FUEL: THIS ENGINE IS CERTIFIED TO OPERATE ON UNLEADED GASOLINE. ENGINE OIL:

zzz-2179R-zz

SAE 10W-30

10/9/03 11:53 AM Page 5

AE00071

SAFETY INFORMATION

AE00072

741-002

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.

AE00075

741-003

741-005

FUEL IS HIGHLY FLAMMABLE AND POISONOUS 9 Always turn off the engine when refuelling. 9 Never refuel while smoking or in the vicinity of an open flame. 9 Take care not to spill any fuel on the engine or muffler when refuelling. 9 If you swallow any fuel, inhale fuel vapor, or allow any to get in your eye(s), see your doctor immediately. If any fuel spills on your skin or clothing, immediately wash with soap and water and change your clothes. 9 When operating or transporting the 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

10/9/03 11:54 AM Page 6
9 Keep the machine at least 1 m (3 ft) from buildings 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 handle(s).
1 Carrying handle(s) (shaded)

741-057

AE00083
ELECTRIC SHOCK PREVENTION 9 Never operate the engine in rain or snow.

741-010

9 Never touch the machine with wet hands or electrical shock will occur.

741-011

9 Be sure to ground (earth) the generator. NOTE: Use ground (earth) lead of sufficient current capacity.

q 1 Lead diameter

741-058

10/9/03 11:54 AM Page 7

Ground (earth) Lead Diameter: 0.12 mm (0.005 in)/ampere EX: 10 Ampere 1.2 mm (0.05 in)

AE00088

CONNECTION NOTES 9 Avoid connecting the generator to commercial power outlet. 9 Avoid connecting the generator in parallel with any other generator.

1 Correct 2 Incorrect

AE00091

CONNECTION

Before the generator can be connected to a buildings electrical system, a licensed electrician must install an isolation (transfer) switch in the buildings main fuse box. The switch is the connection point for generator power and allows selection of generator or main line power to the building. This will prevent the generator from charging the main power line (backfeeding) when the main power supply has failed or has been turned off for line repair. Backfeeding can electrocute or injure line maintenance personnel. Also, generator and building electrical system damage can occur when normal operating power returns if unit is used without an isolation switch.

ECONOMY CONTROL SWITCH

1 I ON

763-124a
When the economy control switch is turned ON, the economy control unit controls the engine speed according to the connected load. The results are better fuel consumption and less noise.
When the economy control switch is turned OFF, the engine runs at the rated rpm (3,600 rpm) regardless of whether there is a load connected or not. NOTE: The economy control switch must be turned to OFF when using electric devices that require a large starting current, such as a compressor or a submergible pump.

10/9/03 11:59 AM Page 11

AE00780
DC PROTECTOR The DC protector turns off automatically when the load exceeds the generator rated output.

763-188a

Reduce the load to the specified generator rated output if the DC protector turns off. If it turns off again, consult a Yamaha dealer. NOTE: Press to reset the DC protector.

1 OFF 2 ON

AE00848

763-006

763-105a

763-060a

G.F.C.I. RECEPTACLE (for YG2800i) 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 happens, 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.
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 30. 9 Remember that only receptacles labeled GFCI have ground fault circuit interrupter protection.

10/9/03 11:59 AM Page 12

AE00845

PRE-OPERATION CHECK

NOTE: Pre-operation checks should be made each time the generator is used.
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

704-016

6. Push the choke knob back to the original position.

701-047a

NOTE: When starting the engine in areas where the ambient temperature is below 0C (32F), the engine automatically operates at the rated r/min (3,600 r/min) for three minutes to warm up the engine regardless of the economy control switch position. The economy control unit operates normally afterwards if the economy control switch is turned to I (ON).

10/9/03 11:59 AM Page 16

AE01000

APPLICATION RANGE

Power factor

0.80.95

0.40.75 (Efficiency 0.85) Rated voltage 12V Rated current 10A

2,500W

2,000W
NOTE: 9 means below. 9 Application wattage indicates when each device is used by itself. 9 The simultaneous usage of AC and DC power is possible but total wattage should not exceed the rated output. EX:
Generator rated output Frequency Power factor 1.0 AC 0.8 q

760-021a

2500VA 2350W 1880W 120W (12V/10A)
9 The overload indicator light 1 comes on when total wattage exceeds the application range. (See page 18 for more details.)
Be sure the total load is within generator rated output 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.

10/9/03 11:59 AM Page 17

AE01001
CONNECTION Alternating Current (AC)
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. 9 Be sure the total load is within generator rated output. 9 Be sure the receptacle load current is within receptacle rated current. 1. Wind the power lead 2 or 3 turns around frame. 2. Start the engine. 3. Plug in to the AC receptacle.

EF2800i

761-063a

761-006

YG2800i

761-074

4. Make sure the AC pilot light is on.

1 AC pilot light

760-022a
5. Turn the economy control switch to the I (ON) position and turn on any electric devices.

763-129a

NOTE: The economy control switch must be turned to 3 (OFF) when using electric devices that require a large starting current, such as a compressor or a submergible pump.

10/9/03 11:59 AM Page 18

AE00788
Overload indicator light The overload indicator light 1 comes on when an overload of a connected electrical device is detected, the inverter control unit overheats, or the AC output voltage rises. The electronic breaker will then activate, stopping power generation in order to protect the generator and any connected electric devices. The AC pilot light (green) will go off and the overload indicator light (red) will stay on, but the engine will not stop running. When the overload indicator light comes on and power generation stops, proceed as follows: 1. Turn off any connected electric devices and stop the engine. 2. Reduce the total wattage of connected electric devices within the application range. 3. Check for blockages in the cooling air inlet and around the control unit. If any blockages are found, remove. 4. After checking, restart the engine. NOTE: 9 The generator AC output automatically resets when the engine is stopped and then restarted. 9 The overload indicator light may come on for a few seconds at first when using electric devices that require a large starting current, such as a compressor or a submergible pump. However, this is not a malfunction.

10/9/03 11:59 AM Page 19

AE00786
Battery Charging NOTE: The generator DC rated voltage is 12V. 1. Wind the battery charging lead (furnished as an accessory) 2 or 3 turns around the frame and plug into DC receptacle. NOTE: 9 Make connections to the battery after starting the engine. 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.

1 Red 2 Black

2. Start the engine. 3. Press in the DC protector and install the battery.
9 Be sure the economy control switch is turned off while charging the battery. 9 Be sure the battery leads are properly connected. 9 Be sure the breather hose is properly connected and is not damaged or obstructed. 9 Reduce the load to the specified generator rated output if the DC protector turns off. If it turns off again, consult a Yamaha dealer.

** Exhaust System

Check muffler screen and spark arrester. Clean/ replace if necessary. Check oil level 0 0

Engine Oil ** Air Filter

Replace Clean. Replace if necessary.

7. * **

: It is recommended that these items be serviced by a Yamaha dealer. : Related to emission control system.
7VU-9-12-B 9/30/03 11:24 AM Page 23
Every Pre-Ope- Initial ration check month months months months (daily) or 20 Hr or 50 Hr or 100 Hr or 300 Hr 0

Fuel Filter

Clean fuel cock and fuel tank filter. Replace if necessary. Check fuel hose for crack or damage. *Replace if necessary. Check choke operation. Check for fan damage. Check recoil starter operation. More frequently if necessary. Check the pilot light comes on. 0 0

Fuel Line

10. ** Choke knob 11. Cooling System 12. Starting System ** 13.* Decarbonization 14. Generation
Check operation G.F.C.I. receptacle *Repair if (for YG2800i) necessary. Check all fittings and fasteners. Correct if necessary.
Fittings/ 16.* Fasteners * **
Use only Yamaha specified genuine parts for replacement. Ask an authorized Yamaha dealer for further attention.
7VU-9-12-B 9/30/03 11:24 AM Page 24

AE00971

SPARK PLUG INSPECTION You should periodically remove and inspect the spark plug. 1. Check for discoloration and remove the carbon.

760-023

Standard electrode color: Tan Color 2. Check the spark plug type and gap. Standard Spark Plug: BPR4ES (NGK) Spark Plug Gap: 0.70.8 mm (0.0280.031 in)

760-001a

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 professional knowledge, specialized data, and equipment to do so properly.
7VU-9-12-B 9/30/03 11:24 AM Page 25

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. 4. Check the drain plug, gasket, oil filler cap and Oring. If damaged, replace.

700-109a

1 Oil drain plug 2 Gasket 3 O-ring
5. Reinstall the oil drain plug. Drain Plug Torque: 17 Nm (1.7 kgfm, 12 lbfft)
6. Add engine oil to the upper level.

q 1 Upper level

Recommended oil: YAMALUBE 4 (10W-30) or SAE 10W-30 type SE motor oil SAE #30 SAE #20 SAE 10W Engine oil quantity: 0.6 L (0.53 Imp qt, 0.63 US qt) NOTE: Recommended engine oil classification: API Service SE or SF.
Be sure no foreign material enters the crankcase.
7VU-9-12-B 9/30/03 11:24 AM Page 26

AE00443

MUFFLER SCREEN AND SPARK ARRESTER
The engine and muffler will be very hot after the engine has been run. Avoid touching the engine and muffler while they are still hot with any part of your body or clothing during inspection or repair. 1. Remove the muffler screen.

1 Screen 2 Screw

711-067
2. Use a flathead screw driver to pry the spark arrester out from the muffler.

711-054c

3. Remove the spark arrester.

q 1 Spark arrester

711-054e
4. Remove the carbon deposits on the muffler screen and spark arrester using a wire brush.
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.

711-022

711-050
7VU-9-12-B 9/30/03 11:24 AM Page 27
6. Install the spark arrester. NOTE: Align the spark arrester projection with the hole in the muffler pipe.

711-054d

1 Projection 2 Hole
7. Install the muffler screen.

711-067a

7VU-9-12-B 9/30/03 11:24 AM Page 28

AE00451

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. Recommended oil: Foam-air-filter oil or SAE #20 motor oil
Do not wring out the element. This could cause it to tear. 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.

710-037a

The engine should never run without the element; excessive piston and cylinder wear may result.
Never use solvent while smoking or in the vicinity of an open flame.
7VU-9-12-B 9/30/03 11:24 AM Page 29

AE00461

FUEL COCK
Never use or be near fuel and solvent while smoking or in the vicinity of an open flame. 1. 2. 3. 4. 5. 6. Stop the engine. Turn the fuel cock lever to OFF. Remove the fuel cock cup and gasket. Clean the cup with solvent and wipe it off. Check the gasket. Replace it if damaged. Reinstall the gasket and fuel cock cup.

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.
Be sure the tank cap is tightened securely.

707-082

7VU-9-12-B 9/30/03 11:24 AM Page 30

AE01007

763-105
G.F.C.I. RECEPTACLE TEST (for YG2800i) 1. Start the engine. 2. Press the test button 1, then check the position of the reset button 2. G.F.C.I. Reset Button Position after Test Pop Out 3 Stay In 4

763-059

G.F.C.I. Receptacle Operation Correct Incorrect
3. 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.
Do not operate the generator with a faulty G.F.C.I. circuit. Electric shock could occur. Have the generator repaired by a qualified mechanic.
7VU-9-12-B 9/30/03 11:24 AM Page 31

AE00512

TROUBLESHOOTING Engine wont 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.

705-037a

2. Engine oil system Insufficient 2 Oil level is low. Add engine oil.
3. Electrical systems 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.

763-084i

4. Compression Insufficient 2 Worn out piston and cylinder. Consult dealer. 2 Loose cylinder head nuts. Tighten nuts properly. 2 Damaged gasket. Replace gasket.

760-009

AE00785
Generator wont produce power 2 Safety device (AC) to OFF. Stop the engine, then restart. 2 Safety device (DC protector) to OFF. Press to reset the DC protector.
7VU-9-12-B 9/30/03 11:24 AM Page 32

AE00515

ENGINE DOES NOT START
B Turn the engine switch to ON, then pull the recoil starter and check if the oil warining light flickers.

Check engine oil level.

Does not flicker

Flickers.

OK Consult a Yamaha dealer.

Level low

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:
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 carburetor area. 9 To prevent ELECTRIC SHOCK do not hold spark plug lead with hand while testing. I Engine does not start. J Engine starts.
Incorrect Replace or Adjust Gap.
M OK Clean the spark plug.
Check the following O Clogged 9 Fuel cock clogging 9 Air cleaner element P OK clogging. 32
Clean or Replace; Consult a Yamaha dealer. Consult a Yamaha dealer.
7VU-9-12-B 9/30/03 11:24 AM Page 33

AE00601

STORAGE
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 bowl.

a Carburetor drain plug

2. Pour a cup of SAE 10W30 or 20W40 motor oil into the tank. 3. Shake the tank to coat the inner surfaces thoroughly. 4. Drain off the excess oil.

707-083

AE00621
ENGINE 1. Remove the spark plug, pour about one tablespoon 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

7VU-9-12-B 9/30/03 11:24 AM Page 34

AE01002

EXHAUST EMISSION CONTROL SYSTEM AND COMPONENTS

Acronym

9 CARB. ASSY., LH. & JT.,..CARB (Carburetor) CARBURETORC.D.I. UNIT ASSY. & C.D.I..EI (Electronic Ignition) MAGNETO ASSY. & 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 document J1930, Diagnostic Acronyms, Terms, and Definitions For Electrical/Electronic System. It is recommended that these items be serviced by a Yamaha dealer.

7VU-9-12-B 9/30/03 11:24 AM Page 35

AE00701

SPECIFICATIONS

AE00702

DIMENSIONS
Overall Length Overall Width Overall Height Dry Weight Unit mm (in) mm (in) mm (in) kg (lb) EF2800i/YG2800i 487 (19.2) 395 (15.6) 425 (16.7) 29 (63.9)

AE00704

ENGINE
Unit Type Cylinder Arrangement Displacement Bore Stroke Rated Output Operation Hours Fuel Fuel Tank Capacity Engine Oil Quantity Ignition System Spark Plug: Type Spark Plug: Gap Noise Level* EF2800i/YG2800i Forced air cooled 4-stroke gasoline OHV Inclined, 1 cylinder 171 66.0 50.0 (2.60 1.97) 3.3 (4.4)/3,600 7.7 Unleaded gasoline 11.2 (2.46, 2.96) 0.6 (0.53, 0.63) CDI BPR4ES (NGK) 0.70.8 (0.0280.031) 67
cm3 mm (in) kW(HP)/r/min Hr L (Imp gal, US gal) L (Imp qt, US qt)

mm (in) dB (A)

* : Measured at rated operation from 7 m (23 ft) distance.

AE00707

GENERATOR
Unit AC Output Rated Voltage Rated frequency Rated current Rated Output Safty Device: Type DC Output Rated voltage Rated current Safety Device: Type V Hz A kVA EF2800i/YG2800i 20.8 2.5 Electronic DC protector 35
7VU-9-12-B 9/30/03 11:24 AM Page 36

AE00751

WIRING DIAGRAM EF2800i
Br Br Y Y Y Y Y Y Y Y Y R W B R R Br R R

G/Y G/Y R

Y R L O O O R G/Y BR
B Gy Br R Y O R B Y B/W O O R B Y B/W O O

G/Y O R O O G/Y R O

B/W R B B

G/Y B/W

R G/Y B/W (B) G/Y W/LB/W G/Y W/LB/W (R)
R R Y L R Y L B/W L W/L B

G Y R L O

R G/Y B/W

G/Y G/Y B/W

1 Main coil 2 Sub coil 3 DC rectifier 4 Control unit 5 AC pilot light 6 AC receptacle 7 Ground (Earth) terminal 8 Economy control switch 9 Overload indicator light 0 DC receptacle q DC protector (breaker) w Engine switch e Oil warning light r Oil warning unit t Oil level gauge y Ignition coil u Spark plug i AC-CDI unit o Pulser coil p Stepping motor
Color code B Black Br Brown G Green Gy Gray L Blue O Orange R Red W White Y Yellow B/W Black/White G/Y Green/Yellow W/L White/Blue
7VU-9-12-B 9/30/03 11:24 AM Page 37

WIRING DIAGRAM YG2800i

q u Br
Br Y Y Y Y Y Y Y Y Y R W B R R Br R R Br

R G/Y R B

B Gy Br R Y O R B Y B/W O O R B Y B/W O O Y

G/Y O R O O G/Y O R

1!1 !2
R G/Y B/W (B) G/Y W/L B/W G/Y W/L B/W (R)
1 Main coil 2 Sub coil 3 DC rectifier 4 Control unit 5 AC pilot light 6 AC receptacle 7 G.F.C.I. receptacle 8 Ground (Earth) terminal 9 Economy control switch 0 Overload indicator light q DC receptacle w DC protector (breaker) e Engine switch r Oil warning light t Oil warning unit y Oil level gauge u Ignition coil i Spark plug o AC-CDI unit p Pulser coil a Stepping motor

770-038b