Koshin GV-3000 User manual

High Performance Gasoline Generator
OPERATION MANUAL
12-11 065038401
12 Kami-Hachinotsubo Kotari, Nagaokakyo City, Kyoto 617-8511 JAPAN
TEL.[phone] FAX.[phone]
[GV-3000・GV-3200・GV-7000S・GV-7600S]

INTRODUCTION
Thank you for purchasing a KOSHIN generator. This manual will provide you a basic
understanding of the operation and maintenance of this generator.
Please read it carefully.
We continually seek advancements 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 machine and this manual. We reserve
the right to make changes at any time without incurring any obligation
This manual should be considered a permanent part of this generator and should
remain with this generator when resold.
PLEASE READ AND UNDERSTAND THIS MANUAL COMPLETELYBEFORE
OPERATING THE MACHINE.
Important information is distinguished in this manual by the following notation:
Failure to follow “DANGER” instructions can result in severe
injury or death to the engine operator, a bystander or a person
inspecting or repairing the generator.
Failure to follow “WARNING” instructions can result in severe
injury to the engine operator, a bystander or a person
inspecting or repairing the generator.
A “CAUTION” indicates special precautions that must be taken
to avoid damage to the generator.
A NOTE provides key information to make procedures easier or
clearer.
CAUTION
NOTE
WARNING
DANGER

1
CONTENTS
SAFETY INFORMATION························································································2
COMPONENT IDENTIFICATION···········································································6
CONTROLS············································································································7
ENGINE SWITCH····························································································7
RECOIL STARTER··························································································7
FUEL VALVE···································································································7
CHOKE············································································································8
AC CIRCUIT BREAKER··················································································8
OIL WARNING SYSTEM ·················································································8
DC TERMINAL·································································································9
DC CIRCUIT BREAKER··················································································9
PRE-OPERATION CHECK ··················································································10
ENGINE OIL ··································································································10
REFUELING ··································································································11
GROUND (Earth)···························································································11
BATTERY·······································································································12
OPERATION ·······································································································13
STARTING THE ENGINE··············································································13
APPLICATION RANGE··················································································14
CONNECTION·······························································································15
STOPPING THE ENGINE ·············································································16
PERIODIC MAINTENANCE·················································································17
MAINTENANCE CHART ···············································································17
ENGINE OIL REPLACEMENT ······································································18
SPARK PLUG INSPECTION·········································································18
AIR FILTER····································································································19
CARBURETOR ADJUSTMENT·····································································19
FUEL VALVE··································································································20
FUEL TANK FILTER ······················································································20
STORAGE············································································································21
TROUBLESHOOTING·························································································23
SPECIFICATION ··································································································25
WIRING DIAGRAM······························································································26
························································30
INSTALLATION INSTRUCTIONS
WHEEL KIT AND HANDLE ASSEMBLY

2
SAFETY INFORMATION
OPERATOR RESPONSIBILITY
・ Be knowledgeable of how to use all generator controls, output receptacles and
connections.
・ Know ways to stop the generator operation quickly in case of emergency.
・ Person operating the generator must receive proper training and instructions.
・ No child should operate the generator without proper parental or adult instruction.
・ Keep children away from the area of operation.
・ Make sure the generator is on firm and level surface. Do not place on unstable
surface such as sand or snow. Fuel spillage may occur when generator is tilted or
overturned.
EXHAUST FUMES ARE POISONOUS
・ Never operate the engine in a closed area. It
may cause unconsciousness and death within
a short time. Operate the engine in a well
ventilated area.
FUEL IS HIGHLY FLAMMABLE AND POISONOUS
・ Always turn off the engine when refueling.
・ Never refuel while smoking or in the vicinity of
an open flame.

3
・ Take care not to spill any fuel on the engine or
muffler when refueling.
・ When operating or transporting the machine,
be sure it is kept it upright. If it tilts, fuel may
leak from the carburetor or fuel tank.
・ 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.
ENGINE AND MUFFLER MAY BE HOT
・ Place the machine so pedestrians or children
are not likely to touch the machine.
・ Avoid placing any flammable materials near
the exhaust outlet during operation.
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4
・ Keep the machine at least 1 m (3 ft) from
building or other equipment, the engine may
overheat.
・ The engine and muffler remain hot for a while
after stopping the engine. Be careful not to
touch them.
・ Avoid operating the engine with a dust cover
on.
ELECTRIC SHOCK PREVENTION
・ Never operate the generator in wet conditions
such as in rain or snow.
・ Never touch the machine with wet hands, an
electrical shock will occur.

5
・ Be sure to ground the generator to the earth.
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Use ground lead of sufficient current capacity.
Ground (earth) Lead Diameter : 0.12mm (0.005 in) / ampere
EX : 10 Ampere →1.2mm (0.05 in)
EXTENSION CORD NOTES
・ When using an extension cord, its total length should not exceed
60 meters for cross section of 1.5 mm2and
100 meters for cross section of 2.5 mm2or more.
Long extension cables will lower usable power due to resistance in extension cable.
・This extension cord should be protected by a tough flexible rubber sheath (IEC 245)
or the equivalent to withstand mechanical stresses.
CONNECTION NOTES
・ Do not connecting the generator to commercial power outlet.
・ Do not connecting the generator in parallel with any other generator.
Before the generator can be connected to a building’s
electrical system, a licensed electrician must install an
isolation (transfer) switch in the building’s main fuse box. The switch is the
connection point for generator power and allows selection of generator or main
line power to the building. This will prevent the generator from charging the main
power line (backfeeding) when the main power supply has failed or has been
turned off for line repair. Backfeeding can electrocute or injure line maintenance
personnel. Also, generator and building electrical system damage can occur
when normal operating power returns if unit is used without an isolation switch.
Ｃｏｒｒｅｃｔ
Inｃｏｒｒｅｃｔ
Inｃｏｒｒｅｃｔ
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NOTE
WARNING
5

6
COMPONENT IDENTIFICATION
<PANEL>
GV-3000 GV-3200
GV-7000S GV-7600S
MUFFLER
AIR FILTER
CHOKE
LEVER
FUE
L
VALVE
RECOIL
STARTER GRIP
FUEL TANK CAP
OIL DRAIN
PLUG
OIL FILLER
CAP
VOLTAGE METER
SPARK PLUG CAP
AC RECEPTACLES
ENGINE SWITCH
DC CIRCUIT BREAKER
GROUND TERMINAL
PILOT LAMP
DC TERMINALS
AC CIRCUIT BREAKER
VOLTAGE METER
AC RECEPTACLES
ENGINE SWITCH
DC CIRCUIT BREAKER
GROUND TERMINAL
PILOT LAMP
DC TERMINALS
AC CIRCUIT BREAKER
VOLTAGE METER
AC RECEPTACLES
ENGINE SWITCH
DC CIRCUIT BREAKER
GROUND TERMINAL
PILOT LAMP
DC TERMINALS
AC CIRCUIT BREAKER
VOLTAGE METER
AC RECEPTACLES
ENGINE SWITCH
DC CIRCUIT BREAKER
GROUND TERMINAL
PILOT LAMP
DC TERMINALS
AC CIRCUIT BREAKER

7
CONTROLS
ENGINE SWITCH The engine switch controls the
ignition system to start and stop
the engine.
①ON :
Ignition circuit is switched on.
The engine can be started.
②OFF :
Ignition circuit is switched off.
The engine will not run.
③START :
Starting circuit is switched on.
The starter motor starts.
(GV-7000S, GV-7600S)
Take your hand off the switch immediately after the engine starts.
RECOIL STARTER To start the engine, pull slowly on the recoil starter
until it is engaged, then pull it briskly.
Do not allow the starter grip to snap back against the
engine, Return it gently to prevent damage to the
starter.
FUEL VALVE Before starting the engine, turn the fuel valve to “ON”
position so the fuel flows from the fuel tank to the
carburetor.
Be sure to return the fuel valve lever to the OFF
position after stopping the engine.
GV-3000
G
V
-3200
GV-7000S
G
V
-7600S
CAUTION