Hitachi E42SB: OPERATION AND MAINTENANCE
OPERATION AND MAINTENANCE: Hitachi E42SB
English
OPERATION AND MAINTENANCE
NOTE: The information contained in this Instruction Manual is designed to assist you in the safe operation
and maintenance of the generator. Some illustrations in this Instruction Manual may show details
or attachments that differ from those on your own generator.
COMPONENTS
MODEL E24SB, E35SB, E42SB
Fig. 4
7
!1
!3
!2
8
1
9
3
7
4
2
6
5
!0
1 AC CIRCUIT BREAKER
8 SPARK PLUG
2 ENGINE SWITCH
9 CHOKE LEVER
3 AC RECEPTACLE
0 RECOIL STARTER
4 OIL FILLER CAP
A GROUND TERMINAL
5 OIL DRAIN PLUG
B MUFFLER
6 FUEL COCK
C FUEL TANK CAP
7 AIR CLEANER
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SPECIFICATIONS
8
Model
E24SB
Type
Brushless, Revolving Field, Self-exciting, 2-poles, Single phase
AC Voltage
50Hz
230V
Max. Output
50Hz
2,400W
Rated Output
50Hz
2,100W
Rated Current
9.1A
ALTERNATORENGINE
Voltage Regulator
Condenser Type
Power Factor
1.0
Model
MITSUBISHI GM182P
Type
Air-cooled, 4 cycle, OHV, Gasoline Engine
Displacement
181cm
3
Fuel
Regular Automobile Gasoline
Fuel Tank Capacity
3.8 L
Rated Continuous Operation
50Hz
3.0 h
Lubricating Oil
Engine Oil SE Class or Higher
Lubricating Oil Capacity
0.6 L
Starting System
Recoil Starter
Length × Width × Height
589 × 400 × 405 mm
SION
DIMEN-
Dry Weight
37 kg
Specifications are subject to change without notice.
Model
E35SB
E42SB
Type
Brushless, Revolving Field, Self-exciting, 2-poles, Single phase
AC Voltage
50Hz
230V
Max. Output
50Hz
3,500W
4,200W
Rated Output
50Hz
2,800W
3,600W
Rated Current
12.2A
15.7A
Voltage Regulator
Condenser Type
ALTERNATORENGINE
Power Factor
1.0
Model
MITSUBISHI GM291P
MITSUBISHI GM301P
Type
Air-cooled, 4 cycle, OHV, Gasoline Engine
Displacement
296cm
3
Fuel
Regular Automobile Gasoline
Fuel Tank Capacity
6.0 L
Rated Continuous Operation
50Hz
3.0 h
Lubricating Oil
Engine Oil SE Class or Higher
Lubricating Oil Capacity
1.0 L
Starting System
Recoil Starter
Length × Width × Height
683 × 492 × 485 mm
SION
DIMEN-
Dry Weight
55 kg
58 kg
Specifications are subject to change without notice.
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TRANSPORTING / STORAGE
Transporting
CAUTION: Units are heavy. Observe safe lifting procedures when transporting.
Before transporting generator, it is important to turn off both the engine switch and the
fuel cock. Keep generator level at all times to prevent fuel spillage. Fuel vapor or spilled
fuel may ignite.
WARNING: Contact with a hot engine or exhaust system can cause serious burns or fires.
Let the engine and muffler cool before transporting the generator.
Storage
Make sure that the generator storage area is free of excessive humidity and dust. Store the generator in dry, well-
ventilated area.
WARNING: Contact with a hot engine or exhaust system can cause serious burns or fires.
Let the engine and muffler cool before storing the generator.
ASSEMBLY
CAUTION: The generator is too heavy to be lifted by one person. Obtain assistance from others
before you try to move it. Otherwise, Serious injury can result from attempting to lift too
heavy an object.
NOTE: Install the wheel kit (option for E35SB, E42SB) before adding gasoline or engine oil to prevent
damage to the engine. If you are installing accessories after running the generator, be sure that the
fuel tank is empty, and that the fuel cock is turned to the off position, that is, horizontal to the
ground. Be sure that the oil is drained from the engine.
ACCESSORY
ASSEMBLING THE WHEEL KIT (optional)
(The Same Usage for E35SB, E42SB)
Fig. 5
9
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Assembly Procedures
1. Drain the oil by removing the oil drain plug.
2. Drain the gasoline by removing the cup of fuel cock.
3. Attach the wheels 2 to the wheel-shaft 1
4. Insert the split-pin 4 into the hole that is on the wheel-shaft 1, after putting in the washer 3 to the wheel-shaft,
for the prevention of detaching the wheels 2 from the wheel-shaft 1.
5. Prepare 2 sets of the above wheel-shaft assembly.
6. Attach the wheel-shaft assembly to the frame-base, making use of the brackets 5, the bolts 6, washers 8 and
nuts 7.
7. Finally, attach the above 2 wheel-shaft assemblies to the front and rear of the frame-base.
CAUTION: For your safety, don’t fail to fix the wheels with wheel brakes for the prevention of moving.
Don’t operate the generator set at an inclined foundation.
Parts Number: KY90076DA
APPLICATIONS
Power source of electric appliances and tools.
WARNING: HITACHI electronic controlled products should not be used with portable generators.
Irregular generator power could cause these products to fail.
Regarding other manufacturer's products, please contact the manufacturer to see if it is
safe to use the electronic controlled products with portable generators.
PREPARATION BEFORE OPERATION
Before starting the generator, check the oil and fuel levels. Be sure that the air cleaner is functioning. Follow the
guidelines below when adding oil and fuel.
NOTE: There is no oil in the engine crankcase when the generator is shipped. You must add oil before
starting the engine. Check the oil level before each use with the generator on a level surface and
the engine stopped.
Engine oil is a major factor affecting engine performance and service life. Non-
detergent and 2-stroke oils will damage the engine and are not recommended.
Use 4-stroke motor oil that meets or exceeds the requirements for API service
classification SE or Higher.
Always check the API SERVICE label on the oil container to be sure it includes
the letters SE or Higher. SAE 10W- 30 or 10W-40 is recommended for general,
all-temperature use. Other viscosities shown in Fig.6 may be used when the
average temperature in your area is within the indicated range.
CHECKING THE OIL
1. Remove the oil filler cap and wipe the dipstick clean.
2. Check the oil level by inserting the dipstick into the filler neck without screwing
it in.
3. If the test shows no oil markings, the oil is low.
4. If the level is low, add the recommended oil to the upper mark on the dipstick.
10
Single
grade
Multi
grade
Ambient
temperature
OIL FILLER CAP
(OIL GAUGE)
Fig. 6
Fig. 7
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OIL CAPACITY
NOTE: If the oil level is too low, the oil alert system will shutdown
the engine and prevent engine from restarting.
FUEL
WARNING: Gasoline is flammable and its vapor is explosive. To prevent fire or explosion, follow the
guidelines below:
• Keep fuel out of the reach of children.
• Refuel the generator in well-ventilated area. Do not refuel while engine is running or hot. Disconnect all
electrical loads and shut off the engine before refueling.
• Do not overfill the fuel tank. Always allow room for fuel vapors to expand. If you overfill the tank, fuel
can overflow onto the hot engine. This can cause fire or explosion. After refueling, tightly close the fuel
tank cap.
• Do not spill fuel. Fuel or fuel vapor may ignite. If fuel spills, make sure that the area is dry before
starting the engine.
• Never smoke in the refueling area. Never allow open flames or sparks in area.
• Store fuel in an approved container. Store fuel in a well ventilated area free of open flames or sparks.
FUEL TANK CAPACITY
Check the fuel and refill the tank if the fuel level is low. Refuel
carefully to avoid spilling fuel. Do not fill above the shoulder of
the fuel strainer. (until upper limit red line).
Use unleaded gasoline with a pump octane rating of 86 or
higher.
The engine is certified to operate on unleaded gasoline.
Unleaded gasoline produces fewer engine and spark plug
deposits and extends exhaust system life. Never use stale or
contaminated gasoline. Avoid getting dirt or water in the fuel
tank.
Always keep the fuel strainer in place while refueling.
OPERATION
STARTING GENERATOR
WARNING: Before starting the generator, be sure that you read and understand all the safety and
operating instructions in this manual.
1. Disconnect all electrioal loads from the generator.
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OIL FILLER CAP
(OIL GAUGE)
UPPER LEVEL
LOWER LEVEL
HITACHI Model
Liters
E24SB
0.6
E35SB,E42SB
1.0
HITACHI Model
Liters
E24SB
3.8
E35SB,E42SB
6.0
Fig. 8
Fig. 9
LEVEL
(UPPER
LIMIT)
FUEL
FILTER
SCREEN
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2. Open the fuel cock.
3. Push the engine switch to the ON position.
4. Set the choke lever to “CLOSE” (arrow mark). Not necessary if the engine is
warm.
5. Pull the starter handle slowly until resistance is felt.
This is the “Compression” point. Return the handle to its original position
and pull swiftly.
● Do not fully pull out the rope.
● After starting, allow the starter handle to return to its original position
while still holding the handle.
● If the engine fails to start after several attempts, repeat above procedures
with choke lever returned to “OPEN” position.
6. After the engine started, return the choke lever gradually to “OPEN” position.
7. Warm up the engine without a load for a few minutes.
NOTE: Do not allow the starter handle to snap back. Return it slowly by hand.
NOTE: If the oil level in the engine is low, the engine will not start. If the engine does not start, check the
oil level and add oil as needed.
NOTE: To ensure maximum oil lubrication, place the generator on a level surface.
12
OPEN
Fig. 10
Fig. 11
Fig. 12
Fig. 13
Fig. 14
Fig. 15
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USING ELECTRIC POWER
1. Turn off the switch(es) of the electrical appliance(s) before connecting to the
generator.
2. Insert the plug(s) of the electrical appliance(s) into the receptacle.
● Use 16 ampere type receptacles.
● Be sure that the total wattage of all appliances does not exceed the rated
output of the generator.
3. Turn on the switch(es) of the electrical appliances.
WARNING: Be sure to ground the generator if the connected electrical
equipment is grounded.
Fig. 16
NOTE: When the generator is overloaded, the circuit breaker will
automatically activate to protect the generator and stop its output.
Reduce the load to within the specified limits and reset the circuit
breaker. Following this, restart the generator.
U
I
T
B
R
E
C
A
R
K
I
E
C
R
P
T
R
E
E
S
S
E
S
T
O
R
Fig. 17
STOPPING THE GENERATOR
1. Turn off the power switch of the electric equipment or unplug the cord from
receptacle of the generator.
2. Allow the engine about 3 minutes to cool down at no-load before stopping.
3. Set the engine switch to “STOP” position.
4. Close (stop) the fuel cock.
13
CLOSE
Fig. 18
Fig. 19 Fig. 20
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OIL SENSOR
● The oil sensor detects the fall in oil in the crankcase and automatically stops the engine when the oil level
fails down below the safety limit.
● When engine has stopped automatically, check the oil level.
● If the engine does not start by usual starting procedures, check the oil level.
● Run
14
RECOMMENDED OIL LEVEL
OIL LEVEL
FLOAT SWITCH
OFF
SCOPE OF APPLICABILITY
It is recommended to use AC power sources within the following scope.
Scope of applicability
Applicable
Model
Remarks
instruments
50Hz
Light, Electric
E24SB
Up to 2,100W
• The instruments which
Heater, Radio,
require much starting
Television
current and some kinds of
E35SB
Up to 2,800W
motors may be unable to
be used even if they are
within the applicable
E42SB
Up to 3,600W
scope.
Motors with
E24SB
Up to 700W
single phase
• The breaker turns OFF
when the current
Alternating current (AC)
E35SB
Up to 900W
exceeding the applicable
scope is used or when the
applied instrument is
E42SB
Up to 1,100W
defective.
● Stop
Fig. 21
WARNING: HITACHI electronic controlled products should not be used with portable generators.
Irregular generator power could cause these products to fail.
Regarding other manufacturer's products, please contact the manufacturer to see if it is
safe to use the electronic controlled products with portable generators.
Oil Level
OIL LEVEL
ON
Fig. 22
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TROUBLESHOOTING
If the engine does not start
1. Check the fuel tank for sufficient fuel. Refill with fresh gasoline if necessary.
2. Check the engine oil. Fill to the upper limit with fresh oil.
3. Ensure that the fuel cock is open. The fuel cock is open when the lever is perpendicular to the ground (straight
up and down).
4. Check that the spark plug cap is securely attached to the spark plug.
5. Inspect the air filter. Clean or replace it if necessary.
6. Disconnect all electrical loads from the generator, and turn the engine switch on.
7. Follow the starting procedures in this manual on page11.
If the engine still does not start
1. Pull the starter handle 5-6 times.
2. Remove and inspect the spark plug.
If the spark plug is dry:
1. Ensure that there is fresh fuel in the tank and that the fuel cock is open.
2. Reinstall the spark plug and spark plug cap.
3. Try to start the engine again by following the starting procedures in this manual on page11.
4. If the engine fails to start, take the generator to an authorized HITACHI service center.
If the spark plug is wet.
1. Clean, gap, or replace the spark plug.
2. Reinstall the spark plug and spark plug cap.
3. Try to start the engine again by following the starting procedures in this manual on page11.
4. If the engine fails to start, take the generator to an authorized HITACHI service center.
If there is no power to the receptacles
1. Disconnect all electrical loads from the generator.
2. Reconnect the electrical loads. Be sure that the plugs are securely connected to the receptacles.
3. If there is still no power at the receptacles, take the generator to an authorized HITACHI service center.
MAINTENANCE
IMPORTANCE OF MAINTENANCE
Good maintenance is essential for safe, economical, and trouble-free operation. It will also help reduce air
pollution.
WARNING: Improper maintenance or failure to correct a problem before operation can cause
malfunction, serious injury, or death. Always follow the inspection and maintenance
recommendation and schedules in this user’s manual.
The following pages include a maintenance schedule, routine inspection procedures, and
simple maintenance procedures using basic hand tools, to help you properly care for your
generator. If you are not comfortable with any maintenance procedure, have the generator
serviced by a professional technician.
Maintenance, replacement, or repair of the emission control devices and system may be
performed by any engine repair establishment or individual, using parts that are “certified”
to EU standards.
MAINTENANCE SAFETY
WARNING: Always follow the procedures and precautions in the owner’s manual. Failure to
properly follow maintenance instructions and precautions can lead to serious injury or
death.
SAFETY PRECAUTIONS
CAUTION: Make sure that the engine is off before you begin any maintenance or repairs.
This will eliminate several potential hazards, including:
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• Carbon monoxide poisoning from engine exhaust. Be sure there is adequate ventilation whenever you
operate the engine.
• Burns from hot parts. Let the engine and exhaust system cool before you touch it to prevent burns.
• Injury from moving parts. Wear appropriate clothing, tie back long hair, and stay alert around the
generator to prevent injury from moving parts.
Read the instructions before you begin, and make sure you have the tools and skills required.
Your authorized service center knows your generator best and is fully equipped to do maintenance and repair.
To ensure the best quality and reliability, use only new genuine parts or their equivalents for repair or replacement.
CAUTION: To reduce the possibility of fire or explosion, be careful when working around gasoline.
Use only a nonflammable solvent, not gasoline, to clean parts. Keep smoking, sparks, and
flames away from all fuel-related parts.
MAINTENANCE SCHEDULE
NOTE: Initial oil change should performed after first 25 hours of use. Thereafter change oil every 50 hours.
Before changing oil, check for a suitable way to dispose of the old oil. Do not pour it down into
sewage drains, onto garden soil or into open streams, Your local zoning environmental regulations
will give you more detailed instructions on proper disposal.
Items marked with a 䡬 required advanced skill and tools, so they should be done by the authorized
HITACHI Service Center.
16
Check the air cleaner
Check oil level and refill to the upper level before starting the engine.
Daily
Check all the points as follows:
Fuel level at fuel gauge, Oil and Fuel leakage, Bolt and nut tightening
Any damage of components.
Clean and wash air-cleaner element.
More often if used in dirty or dusty environments.
Change engine oil.
50 hours (Weekly)
(The initial oil change must be conducted after the first 25 hours operation.)
Check spark plug, and clean and adjust if necessary.
Check and clean the fuel cock.
Replace spark plug.
100 hours
Replace air-cleaner element.
Decarbonize cylinder head, valves and piston.
Inspect control panel components.
Check rotor and stator.
3 years
Replace engine mount rubber.
Overhaul engine.
Change fuel lines.
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ENGINE OIL CHANGE
Change engine oil every 50 hours.
(for a new engine, change oil after 25 hours.)
1. Drain oil by removing the oil drain plug and the oil filler cap while the engine
is warm.
2. Reinstall the oil drain plug and fill the engine with oil unit it reaches the upper
level on the oil filler cap.
● Use fresh and high quality lubricating oil to the specified quantity.
If contaminated or deteriorated oil is used or the quantity of the engine oil
is not sufficient, the engine damage will result and its life will be greatly
shortened.
17
OIL FILLER
CAP
OIL DRAIN PLUG
(OIL GAUGE)
Wash your hands with soap and water after handling used oil.
Please dispose of used motor oil and containers in a manner that will not harm the natural environment. We
suggest you take it in a sealed container to your local service station or recycling center for reclamation. Do not
throw it in the trash, pour it on the ground or down the drain.
NOTE: Never operate the generator without oil cap tightly secured. Failure to do so could cause oil to spill
out of the engine.
AIR FILTER
Adirty air cleaner will restrict airflow to the carburetor. To prevent carburetor malfunction, service the air filter
regularly. Service more frequently when operating the generator in extremely dusty areas.
NOTE: Never run the generator without the air cleaner. Rapid engine wear will result.
1. Take out the air cleaner, clean it well in kerosene and dry it.
2. After wetting the element by clean engine oil, squeeze it tight by hand.
3. Lastly, put the element in the case and install it securely.
ELEMENT
Fig. 23
Fig. 24
Fig. 25
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CLEANING FUEL STRAINER (FUEL COCK)
The fuel strainer removes dirt and water in the fuel.
1. Remove the strainer cup and throw away water and dirt.
2. Clean the screen and strainer cup with gasoline.
3. Tightly fasten the cup to main body, making sure to avoid fuel leak.
18
BODY
SCREEN
GASKET
CUP
SPARK PLUG SERVICE
To service the spark plug, use plug wrench (standard accessory). Use
recommended spark plugs.
RECOMMENDED PLUG AND ELECTRODE CLEARANCE
To ensure proper engine operation, the spark plug must be properly gapped and
free of deposits.
CAUTION: If the engine has been running, the muffler will be very hot.
Be careful not to touch the muffler. Be sure to allow the
engine to cool before you touch the spark plug.
1. Remove the spark plug cap.
2. Clean any dirt from around the spark plug base.
3. Use a spark plug wrench to remove the spark plug.
4. Visually inspect the spark plug. Replace it if the insulator is cracked or
chipped.
Clean the spark plug with a wire brush if you plan to reuse it.
5. Measure the plug gap with the feeler gauge. Correct as necessary by
carefully bending the side electrode (Fig.27).
6. Check that the spark plug washer is in good condition. If it is not, thread the spark plug in by hand to prevent
cross threading.
7. After the spark plug is seated, tighten with a spark plug wrench to compress the washer. If you are installing a
new spark plug, tighten the spark plug 1/2 turn after it seats to compress the washer. If you are reinstalling a
used spark plug, tighten 1/8–1/4 turn after the spark plug seats to compress the washer.
NOTE: The spark plug must be securely tightened. An improperly tightened spark plug can become very
hot and could damage the engine. Never use spark plugs which have an improper heat range. Use
only the recommended spark plugs or equivalent.
ELECTRODE
CLEARANCE
Fig. 26
HITACHI Model
Plug
Electrode Clearance
E24SB
BPR6HS (NGK)
0.6 to 0.7mm (0.024" to 0.028")
E35SB,42SB
BPR5ES (NGK)
0.7 to 0.8mm (0.028" to 0.031")
Fig. 27
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PREPARATION FOR STORAGE
The following procedures should be followed prior to storage of your generator for periods of 3 months or longer.
1. Drain fuel from fuel tank carefully. Gasoline left in the fuel tank will eventually
deteriorate making engine-starting difficult.
2. Loosen the drain screw on the bottom of the carburetor float chamber, and
drain the fuel completely.
3. Change engine oil.
4. Check for loose bolts and screws, tighten them if necessary.
5. Clean generator thoroughly with oiled cloth. Spray with preservative if
available.
NEVER USE WATER TO CLEAN GENERATOR!
6. Pull starter handle until resistance is felt, leaving handle in that position.
7. Store generator in a well ventilated, low humidity area.
SERVICE AND REPAIRS
All quality generators will eventually require servicing or replacement of parts because of wear from normal use.
To assure that only authorized replacement parts will be used, all service and repairs must be performed by a
HITACHI AUTHORIZED SERVICE CENTER, ONLY.
19
1DRAIN
SCREW
Fig. 28
G/R C-BOX E/G
CB
R
GREEN
BLUE
OSU
MCFC
GREEN
GREEN
OS
WHITE
REC
REC
SW
SC
YELLOW
YELLOW
IG
BLACK
MC
RED
BLACK
C
SP
BLACK
YELLOW/
GREEN
ET
WIRING DIAGRAM
E24SB, E35SB, E42SB
Symbol
Parts Name Symbol Parts Name Symbol Parts Name
E/G
Engine
R
Rotor CP
CB
AC circuit breaker
G/R
Generator
OSU
Oil sensor unit
C
Capacitor
C-BOX
Control box
ET
Ground terminal
SW
Engine switch
MC
AC wiring
SP
Spark plug
IG
Ignition coil
SC
Auxiliary winding
REC
AC receptacle
FC
Field winding
OS
Oil sensor
Fig. 29
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Оглавление
- SAFETY
- OPERATION AND MAINTENANCE
- ÅÖáéèÄëçéíú
- èêÄÇàãÄ ùäëèãìÄíÄñàà
