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periodic-maintenance service-chart oil-grade-and-quality
Please select models from here:

● EF6600E

MAINTENANCE CHART
Regular maintenance is most important for the best performance and safe operation.

Warning
Stop the engine before starting maintenance work.
   
   
EF6600 Maintance Chart

EF6600 Maintance Chart


*: It is recommended that these items be serviced by a Yamaha
dealer.

Caution
Use only Yamaha specified genuine parts for replacement. Ask an authorized Yamaha dealer for further attention.

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.
_________________________________________
   
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 O-ring. If damaged, replace.

1 Oil drain plug
2 Gasket
3 O-ring

5. Reinstall the oil drain plug.

Drain Plug Torque:
30 N•m (3.0 kgf•m, 22 lbf•ft)

6. Add engine oil to the upper level.
4 Upper level

Recommended oil:
A- SAE #30

or 10W-30
or 10W-40
B- SAE #20
or 10W-30
or 10W-40
C- SAE 10W or 10W-30
or 10W-40
Above 35°C (95°F): SAE #40
Engine oil quantity:
1.1 L (0.97 lmp qt)


Note:
Recommended engine oil classification:
API Service “SE” or “SF”.

Caution:
Be sure no foreign material enters the crankcase.
EF6600 Engine Oil Replacement
_________________________________________
   
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.
EF6600 Oli Warning System
_________________________________________
   
SPARK PLUG INSPECTION
1. Check for discoloration and
remove the carbon.

Standard electrode color:
Tan Color

2. Check the spark plug type
and gap.

Standard Spark Plug:
BPR4ES (NGK)
a Spark Plug Gap:
0.7 – 0.8 mm
(0.028 – 0.031 in)

3. Install the spark plug.

Spark Plug Torque:
20 N•m (2 kgf•m, 14 lbf•ft)


EF6600 Spark Plus Inspection
_________________________________________
   
TROUBLESHOOTING
Engine won’t start
1. Fuel systems
No fuel supplied to combustion chamber.

o No fuel in tank .... Supply fuel.

o Fuel in tank .... Open fuel cock.

o Clogged fuel line .... Clean fuel line.

o Foreign matter in fuel cock .... Clean fuel cock.

o Clogged carburetor .... Clean carburetor.

2. Engine oil system Insufficient

o Oil level is low .... Add engine oil.

3. Electrical systems

o Engine switch to “ON”.
A- EF5500TE/EF6600DE/ EF6600E
B- EF6600

Poor spark

o Spark plug dirty with carbon or wet .... Remove carbon or wipe spark plug dry.

o Faulty ignition system .... Consult dealer.

4. Compression Insufficient

o Worn out piston and cylinder
.... Consult dealer.

o Loose cylinder head nuts ....
Tighten nuts properly.

o Damaged gasket .... Replace
gasket.

Generator won’t produce power

o Safety device (AC) to “OFF” .... Turn the AC switch (N.F.B.) to “ON”.
EF6600 Troubleshooting
_________________________________________
   
ENGINE OIL
Make sure the engine oil is at
the upper level of the oil filler
hole. Add oil as necessary.

1 Upper level

Recommended oil:
A- SAE #30

or 10W-30
or 10W-40
B- SAE #20
or 10W-30
or 10W-40
C- SAE 10W or 10W-30
or 10W-40
Above 35°C (95°F): SAE #40
Engine oil quantity:
1.1 L (0.97 lmp qt)


Note
Recommended engine oil classification:
API Service “SE” or “SF”.

Caution
The generator has been shipped without engine oil. Fill with oil or it will not start.
EF6600 Engine Oli
_________________________________________
   
FUEL
Make sure there is sufficient
fuel in the tank.

Recommended fuel:
Unleaded gasoline
Fuel tank capacity:
Total:
21.0 L (4.62 lmp gal)

1 Fuel level gauge

“F” Full
“E” Empty


Warning
o Fuel is highly flammable and poisonous. Check “SAFETY INFORMATION” (See page 7) carefully
before refueling.

o Do not fill above the top of the fuel filter or it may overflow when the fuel heats up later and expands.

o Wipe up any spilled fuel immediately.

o After refueling, make sure the tank cap is tightened securely.
EF6600 Fuel

 

EF6600E

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