Generac Portable Products GP Series User manual

Owner's Manual
50 Hz, GP Series Portable Generator
Australia 1 800 333 28. New Zealand 09 269 1160

DEADLY EXHAUST FUMES! ONLY use OUTSIDE
far away from windows, doors and vents!
NOT INTENDED FOR USE IN CRITICAL LIFE
SUPPORT APPLICATIONS.

SAVE this Manual. Provide this manual to any
operator of the generator.

Frequently Asked Questions .................................. iii
Introduction............................................................. 1
Read this Manual Thoroughly ................................. 1
Safety Rules ........................................................... 1
Registration ............................................................ 3
General Information................................................ 4
1.1 Unpacking......................................................................4
1.1.1 Accessory Box (Common).................................4
1.2 Assembly.......................................................................4
1.2.1 Assembling the Accessory Kit............................4
1.2.2 Battery Cable Connection (Electric Start Only)....6
Operation ................................................................ 6
2.1 Know the Generator .......................................................6
2.2 Hourmeter (GP5000/GP6000E/GP6500E only) ...............8
2.3 Connection Plugs ...........................................................8
2.3.1 230 VAC, 15 Amp, AS/NZA 3112 F
Receptacle.........................................................8
2.4 How to Use the Generator ..............................................9
2.4.1 System Ground..................................................9
2.4.2 Connecting to a Building's Electrical System ......9
2.5 Don’t Overload the Generator........................................10
2.6 Before Starting the Generator .......................................10
2.6.1 Adding Engine Oil ............................................10
2.6.2 Adding Gasoline...............................................10
2.7 Starting Pull Start Engines............................................11
2.8 Starting Electric Start Engines ......................................12
2.8.1 Manual Start....................................................12
2.9 Stopping the Engine .....................................................12
2.10 Low Oil Level Shutdown System ..................................12
2.10.1 Sensing Low Oil Level......................................12
2.11 Charging the Battery (Electric Start Units Only).............12
Maintenance ......................................................... 13
3.1 Performing Scheduled Maintenance .............................13
3.2 Maintenance Schedule .................................................13
3.2.1 GP5000/GP6000E/GP6500E Maintenance
Schedule .........................................................13
3.2.2 GP2600/GP2800 Maintenance Schedule..........13
3.3 Product Specifications..................................................13
3.3.1 GP5000/GP6000E/GP6500E Generator
Specifications ..................................................13
3.3.2 GP2600/GP2800 Generator Specifications .......13
3.3.3 GP5000/GP6000E/GP6500E Engine
Specifications ..................................................14
3.3.4 GP2600/GP2800 Engine Specifications............14
3.4 General Recommendations...........................................14
3.4.1 Generator Maintenance ....................................14
3.4.2 To Clean the Generator.....................................14
3.4.3 Engine Maintenance.........................................14
3.4.4 Checking Oil Level ...........................................14
3.4.5 Changing the Oil ..............................................14
3.4.6 Replacing the Spark Plug .................................15
3.4.7 Battery Replacement (if applicable)..................15
3.4.8 Spark Arrestor .................................................15
3.5 Service Air Cleaner.......................................................16
3.5.1 GP5000/GP6000E/GP6500E Air Cleaner ..........16
3.5.2 GP2600/GP2800 Air Cleaner............................16
3.6 Valve Clearance............................................................16
3.6.1 GP5000/GP6000E/GP6500E Valve Clearance...16
3.6.2 GP2600/GP2800 Valve Clearance ....................16
3.7 General ........................................................................16
3.8 Long Term Storage.......................................................17
3.9 Other Storage Tips .......................................................17
Troubleshooting .................................................... 18
4.1 Troubleshooting Guide..................................................18
Warranty ............................................................... 19
Table of Contents

iii
NOTE:
This list of Frequently Asked Questions (FAQs) are the frequently
asked questions pertaining to ALL portable models
Some questions may not be applicable to the model covered in
this publication.
FUEL INFORMATION
Q: What is the proper fuel to use in my generator?
A: We recommend regular unleaded gasoline. Do not use E85
gasoline or mix oil with gasoline. Premium grade fuel can be
used, but is not required and will not improve performance or
output.
Q: What needs to be done to the fuel before extended storage?
A: Fuel that is not going to be used- even for short periods of
time should be treated with fuel stabilizer to slow the rate
of deterioration, gumming or varnish formation. Following
the manufacturer’s recommendations, treat the quantity of
fuel remaining in the fuel tank. Open the fuel valve, start and
operate the engine for 30 minutes. Close the fuel valve and
operate until the engine stops. This circulates treated fuel
through lines and carburetor. The fuel can be drained or left in
the tank.
Q: Can I convert my portable generator to run on a different fuel
besides gasoline?
A: We do not offer any type of fuel conversion kit for our portable
generators. Aftermarket conversion kits are available on the
Internet. However, if a customer decides to convert the fuel
using an aftermarket kit, the warranty is void.
Q: Can I use any type of gasoline?
A: Gasoline with an octane rating of 87, with no more than 10%
ethanol is preferred. Never use an E85 fuel or a mixture of
oil and gasoline designated for two cycle engines. Utilizing a
higher grade fuel will not yield any increase in power output.
Q: The fuel capacity in my owner’s manual seems incorrect.
A: The fuel capacity listed is the total interior volume for the
fuel tank. Air space is required to allow for expansion of the
gasoline during warmer temperatures. So the actual amount of
gasoline that will fit in the tank is typically less than the stated
fuel tank capacity.
Q: How do I drain the fuel?
A: Actually, treating the fuel for storage is a better option. The
treated fuel can then be left in the tank. Fuel can be removed
through the fill opening using an automotive style siphon.
Exercise all appropriate cautions when handling fuel.
MAINTENANCE & OIL INFORMATION
Q: I am out of the recommended oil, but I need to operate my
generator. What are my options?
A: In an emergency, oil with an API rating of SH, SJ, SK, CF-4,
ILSAC, GF-1, GF-2 or GF-4 can be used. It can be mineral,
semi-synthetic or synthetic. Any of the following viscosities
are permissible: SAE 5W-30, 10W-30, 10W-40, 20W-50,
30 or 40 weight. Change the oil as soon as possible using
Generac oil, per the owner’s manual recommendations.
Q: If no dipstick is included on my model’s engine. How do I
know when I have put enough oil in my portable generator?
A: The customer should fill the oil to the bottom of the cap’s
threads on the crankcase. The oil should always be checked
and filled when your engine has cooled completely.
Q: Should I screw the oil cap/ dipstick all the way down when
checking the oil level?
A: When checking the oil, the oil fill cap/ dipstick should be
screwed in all the way. The oil level should be checked and
filled when the engine has cooled completely.
Q: The manual says the oil capacity is 1.7 quarts. When I add 1.7
quarts, it doesn’t reach the threads on the crankcase.
A: Add enough oil to reach the bottom the threads on the
crankcase, even if it is more than the manual recommends.
OPERATION
Q: The hourmeter said it was time to service the air filter. After the
service has been performed, does anything need to be done to
the hourmeter?
A: The hourmeter will alert the owner continuously for one hour
before and until one hour after scheduled maintenance has
been reached. This includes oil changes (at 100 hours) or air
filter service (at 200 hours). As hours of operation continue
to accumulate, the hourmeter will automatically reset itself
until the next 100 or 200 hour service interval is reached. See
the Hourmeter section of your owner’s manual for additional
information. The hourmeter on some generator models have
a reset button that allows the operator to move between
maintenance intervals and reset intervals by holding the reset
button for nine seconds. NOTE: Not all generator models have
the reset button.
Q: How do I adjust the valve clearance?
A: Valve clearance adjustment is critical to proper engine
operation and requires special tools and training. Instructions
are covered in the Valve Clearance Adjustment section of
your owner’s manual. However, if you are uncomfortable
performing this service procedure, have your dealer maintain
the generator’s valve clearance at the intervals specified.
Frequently Asked Questions

iv
Q: Can I operate my generator in the rain?
A: Portable generators should never be operated inside an
enclosed space or contrary to any provision or warning
found in your Owner's Manual. However, portable generators
are intended to be used during extreme weather and for the
sensitive electronics on them, it is best if some sort of open
covering can be used to protect it from direct rain or snow.
Great options would be a car port or boat canopy with four
open sides or a tarp hung from a tree. It is very important
to provide adequate ventilation for the generator, so any
sort of protection should be at least five feet from any side
(including the top of the unit) while in use. Additionally, a
portable generator should always be stored inside when not
in use to prevent unnecessary wear and tear. BE ADVISED,
the generator should NEVER be used in any enclosed space
including, without limitation, a shed, home, garage, trailer or
vehicle, even if the doors are left open, as this can be a serious
fire hazard and carbon monoxide risk.
Q: How long can I operate the generator? Does it need a “break”?
A: Your generator can be operated continually. The highest
priority is to maintain a proper oil level. Each time you add
fuel, check the oil level as well. Add oil, if necessary, to keep
the level at the upper mark on the dipstick. See the Checking
Oil Level and Adding Fuel sections of your owner’s manual for
complete instructions on adding fuel and oil.
Q: Is there anything special I need to do before I turn off my
generator? Should I unplug my electrical devices?
A: Yes, remove all loads before turning the generator off. First,
turn off all appliances, lights and items being powered by
the generator. Then, unplug the items from the generator’s
receptacles and allow the generator to cool. Once you’ve
done this, it is safe to turn the generator off. NEVER turn
the generator off while loads are applied. Refer to the
Generator Loads section of your owner’s manual for complete
instructions on adding and removing electrical devices.
Q: If the generator is being used, how do I connect or disconnect
electrical devices?
A: NEVER start or stop the generator’s engine with running
electrical devices plugged into the generator. When the
generator is turned off, you can only connect electrical devices
that are turned off. When the generator is turned on, you may
connect electrical devices that are turned on or off.
Q: How often should I start / operate my generator between
outages?
A: Generac recommends starting a generator once a month
and running the unit for about 30 minutes. Starting the unit
monthly will help make sure that the generator is ready to turn
in the event of an outage.
BATTERY INFORMATION
Q: How often do I have to charge the generator’s battery?
A: If the starter will not turn the engine over, charge the battery
using the charger provided with your generator. The charger
should be connected for no longer than 48 hours. Charging
procedures are covered in the Battery Charging section of this
Owner’s Manual.
Q: My generator’s battery will no longer accept a charge. What is
the procedure for replacing a battery?
A: Complete battery replacement procedures can be found in the
Battery Replacement section of your owner’s manual.
Q: How do I charge my portable generator’s battery?
A: Most portable generators do not charge their batteries when
running. Every electric start generator comes with an external
charger. The customer should charge the battery at least once
a month for 24-48 hours in preparation for usage. If the battery
is dead, most of the portables have a recoil backup (pull
start). In an emergency situations, the customer can charge
the battery by plugging the charger cord into the receptacle on
the generator while it is running. This is not recommended for
typical operation.
GENERAL INFORMATION
Q: What are the decibel levels of portable generators?
A: Our portable generators feature a low-tone muffler straight
from the factory. We do not offer a kit or recommend making
any changes to the generator or exhaust system, as that can
void the warranty.
Q: Can I add electric start to my pull start generator?
A: Generac does not offer any kits or accessories to add electric
start to a pull start generator. Making any changes can void
the generator warranty.
Q: Does my warranty cover travel/ pickup for my generator?
A: No. The dealer will not come out to the customer or pick up
the portable generator from the customer unless the customer
has paid them to do so.
Q: What is “idle control” and what does it offer the owner?
A: Most of our portable generators do not have idle control. The
engine will run at full speed in order to accept any immediate
loads. Some of the new XP and XT models do offer idle
control. The iX inverter series models have “eco-mode” which
allows the engine to run at a lower speed.
Frequently Asked Questions

INTRODUCTION
Thank you for purchasing this model by Generac Power Systems,
Inc. This model is a compact, high performance, air-cooled,
engine driven generator designed to supply electrical power to
operate electrical loads where no utility power is available or in
place of utility due to a power outage.
READ THIS MANUAL THOROUGHLY
If any portion of this manual is not understood, contact the nearest
Authorized Dealer for starting, operating and servicing procedures.
The operator is responsible for proper and safe use of the
equipment. We strongly recommend that the operator read this
manual and thoroughly understand all instructions before using the
equipment. We also strongly recommend instructing other users to
properly start and operate the unit. This prepares them if they need
to operate the equipment in an emergency. Save these instructions
for future reference. If you loan this unit to someone, ALWAYS
loan these instructions to the individual as well.
The generator can operate safely, efficiently and reliably only if it
is properly located, operated and maintained. Before operating or
servicing the generator:
• Become familiar with and strictly adhere to all local, state and
national codes and regulations.
• Study all safety warnings in this manual and on the product
carefully.
• Become familiar with this manual and the unit before use.
The manufacturer cannot anticipate every possible circumstance
that might involve a hazard. The warnings in this manual, and on
tags and decals affixed to the unit are, therefore, not all inclusive.
If using a procedure, work method or operating technique that the
manufacturer does not specifically recommend, ensure that it is
safe for others. Also make sure the procedure, work method or
operating technique utilized does not render the generator unsafe.
THE INFORMATION CONTAINED HEREIN WAS BASED ON
MACHINES IN PRODUCTION AT THE TIME OF PUBLICATION.
GENERAC RESERVES THE RIGHT TO MODIFY THIS MANUAL AT
ANY TIME.
SAFETY RULES
Throughout this publication, and on tags and decals affixed to the
generator, DANGER, WARNING, CAUTION and NOTE blocks are
used to alert personnel to special instructions about a particular
operation that may be hazardous if performed incorrectly or
carelessly. Observe them carefully. Their definitions are as follows:
INDICATES A HAZARDOUS SITUATION OR ACTION
WHICH, IF NOT AVOIDED, WILL RESULT IN DEATH
OR SERIOUS INJURY.
Indicates a hazardous situation or action which, if
not avoided, could result in death or serious injury.
Indicates a hazardous situation or action which,
if not avoided, could result in minor or moderate
injury.
NOTE:
Notes contain additional information important to a procedure
and will be found within the regular text body of this manual.
These safety warnings cannot eliminate the hazards that they
indicate. Common sense and strict compliance with the special
instructions while performing the action or service are essential to
preventing accidents.
Four commonly used safety symbols accompany the DANGER,
WARNING and CAUTION blocks. The type of information each
indicates is as follows:

This symbol points out important safety
information that, if not followed, could
endanger personal safety and/or property of
others.

This symbol points out potential explosion
hazard.
This symbol points out potential fire hazard.

This symbol points out potential electrical
shock hazard.
1
Introduction

2
GENERAL HAZARDS
• NEVER operate in an enclosed area, in a vehicle, or indoors
EVEN IF doors and windows are open.
• For safety reasons, the manufacturer recommends that the
maintenance of this equipment is carried out by an Authorized
Dealer. Inspect the generator regularly, and contact the nearest
Authorized Dealer for parts needing repair or replacement.
• Operate generator only on level surfaces and where it will not be
exposed to excessive moisture, dirt, dust or corrosive vapors.
• Keep hands, feet, clothing, etc., away from drive belts, fans,
and other moving parts. Never remove any fan guard or shield
while the unit is operating.
• Certain parts of the generator get extremely hot during
operation. Keep clear of the generator until it has cooled to
avoid severe burns.
• Do NOT operate generator in the rain.
• Do not alter the construction of the generator or change
controls which might create an unsfe operating condition.
• Never start or stop the unit with electrical loads connected
to receptacles AND with connected devices turned ON. Start
the engine and let it stabilize before connecting electrical
loads. Disconnect all electrical loads before shutting down the
generator.
• Do not insert objects through unit’s cooling slots.
• When working on this equipment, remain alert at all times.
Never work on the equipment when physically or mentally
fatigued.
• Never use the generator or any of its parts as a step. Stepping
on the unit can stress and break parts, and may result in
dangerous operating conditions from leaking exhaust gases,
fuel leakage, oil leakage, etc.
• On electric start models, disconnect the POSITIVE (+) battery
cable from the engine starter OR the NEGATIVE (-) battery
cable from the battery terminal, whichever is easier, before
transporting the generator.
EXHAUST & LOCATION HAZARDS
• Never operate in an enclosed area or indoors! NEVER use in
the home, in a vehicle, or in partly enclosed areas such as
garages, EVEN IF doors and windows are open! ONLY use
outdoors and far from open windows, doors, vents, and in an
area that will not accumulate deadly exhaust.
• The engine exhaust fumes contain carbon monoxide, which
you cannot see or smell. This poisonous gas, if breathed in
sufficient concentrations, can cause unconsciousness or even
death.
• Adequate, unobstructed flow of cooling and ventilating air
is critical to correct generator operation. Do not alter the
installation or permit even partial blockage of ventilation
provisions, as this can seriously affect safe operation of the
generator. The generator MUST be operated outdoors.
• This exhaust system must be properly maintained. Do nothing
that might render the exhaust system unsafe or in noncompliance
with any local codes and/or standards.
• Always use a battery operated carbon monoxide alarm indoors,
installed according to the manufacturers instructions.
• If you start to feel sick, dizzy, or weak after the generator has
been running, move to fresh air IMMEDIATELY. See a doctor, as
you could have carbon monoxide poisoning.
ELECTRICAL HAZARDS
• The generator produces dangerously high voltage when in
operation. Avoid contact with bare wires, terminals, connections,
etc., while the unit is running, even on equipment connected
to the generator. Ensure all appropriate covers, guards and
barriers are in place before operating the generator.
• Never handle any kind of electrical cord or device while
standing in water, while barefoot or while hands or feet are wet.
DANGEROUS ELECTRICAL SHOCK MAY RESULT.
• Local electrical codes may also require proper grounding of
the generator. Consult with a local electrician for grounding
requirements in the area.
• Do not use worn, bare, frayed or otherwise damaged electrical
cord sets with the generator.
• Before performing any maintenance on the generator, disconnect
the engine starting battery (if equipped) to prevent accidental
start up. Disconnect the cable from the battery post indicated
by a NEGATIVE, NEG or (–) first. Reconnect that cable last.
• In case of accident caused by electric shock, immediately shut
down the source of electrical power. If this is not possible,
attempt to free the victim from the live conductor. AVOID
DIRECT CONTACT WITH THE VICTIM. Use a non-conducting
implement, such as a rope or board, to free the victim from the
live conductor. If the victim is unconscious, apply first aid and
get immediate medical help.
Safety Rules

FIRE HAZARDS
• Gasoline is highly FLAMMABLE and its vapors are EXPLOSIVE.
Do not permit smoking, open flames, sparks or heat in the
vicinity while handling gasoline.
• Never add fuel while unit is running or hot. Allow engine to cool
completely before adding fuel.
• Never fill fuel tank indoors. Comply with all laws regulating
storage and handling of gasoline.
• Do not overfill the fuel tank. Always allow room for fuel
expansion. If tank is over-filled, fuel can overflow onto a hot
engine and cause FIRE or an EXPLOSION. Never store generator
with fuel in tank where gasoline vapors might reach an open
flame, spark or pilot light (as on a furnace, water heater or
clothes dryer). FIRE or EXPLOSION may result. Allow unit to
cool entirely before storage.
• Wipe up any fuel or oil spills immediately. Ensure that no
combustible materials are left on or near the generator. Keep the
area surrounding the generator clean and free from debris and
keep a clearance of five (5) feet on all side to allow for proper
ventilation of the generator.
• Do not insert objects through unit’s cooling slots.
• Do not operate the generator if connected electrical devices
overheat, if electrical output is lost, if engine or generator sparks
or if flames or smoke are observed while unit is running.
• Keep a fire extinguisher near the generator at all times.
• Do not operate in a hazardous location where there may be a
risk of explosion of petrol fumes, leaking gas or explosive dusts.
REGISTRATION
Register your product online at www.generac.com to receive
important product information or updates.
MODEL NO:
SERIAL NO:
Unit ID Location
3
Safety Rules

4
1.1 UNPACKING
• Remove all packaging material.
• Remove separate accessory box.
• Remove the generator from carton.
1.1.1 ACCESSORY BOX (COMMON)
GP2600/2800
• 1-Owner’s manual
• 1- Bottle of oil SAE 30
• 1-Frame Foot (E)
• 2-Wheels (H)
• 1-Axle (K)
• 1-Handle with Grip (L)
• 1-Plastic Spacer (M)
• 1-Handle Bracket (N)
• 1-Hardware bag (containing the following):
– 2-M8 Flange Nuts (C)
– 2-Rubber Feet (D)
– 2-M8 x 16 Bolts (F)
– 2-Cotter Pins (J)
– 2-M8 x 40 Bolts (P)
– 1-M6 x 40 Bolt (T)
– 1-M6 Lock Nut (U)
GP5000/GP6000E/GP6500E
• 1-Owner’s manual
• 1- Bottle of oil SAE 30
• 2-Frame Foot (E)
• 2-Wheels (H)
• 1-Handle Assembly (Q)
• 2-Long Carriage Head Bolts (A)
• 2-Flange Nuts (electric start only)
• 1-Battery Charger (electric start only)
• 1- Adapter Cable (if equipped)
• 1-Hardware bag (containing the following):
– 4-M8 Flange Nuts (C)
– 2-M6 Flange Nuts (S)
– 2-Rubber Feet (D)
– 4-M8 Bolts (F)
– 2-M6 bolts (R)
– 2-Cotter Pins (J)
– 2-Acorn Nuts (B)
– 2-Axle Pins (G)
– 2-Washers (I)
1.2 ASSEMBLY
The generator requires some assembly prior to using it. If
problems arise when assembling the generator, please call an
authorized dealer at 1 800 333 28 for Australia and 09 269 1160
for New Zealand.
1.2.1 ASSEMBLING THE ACCESSORY KIT
Refer to the instructions below and Figures 1A through 1E to install
the handle, feet, and wheels. Note: the handle components are
already pre-assembled from the factory. The wheels are designed
to greatly improve the portability of the generator. You will need the
following tools to properly install the accessory kit:
• Ratchet and a 13 mm socket (GP5000/GP6000E/GP6500E)
• Ratchet and 10 mm and 12 mm Socket (GP2600/GP2800)
• 13mm box wrench (GP5000/GP6000E/GP6500E)
• 10 mm and 12 mm box wrench (GP6000E/GP6500E)
• Needle nose pliers
Handle (GP5000/GP6000E/GP6500E) (Figure 1A)
1. Install the handle assembly to the frame by using bolts (A) and
nuts (B).
Handle (GP2600/GP2800)
2. Refer to Figure 1B to install the handle assembly as shown.
– Install the handle bracket (N) to the frame using two Bolts (P) (if
not already assembled).
– Slide the plastic spacer (M) onto the handle assembly (L) then
align with the holes in the handle bracket (N) (if not already
assembled).
– Secure the handle assembly (L) to the handle bracket (N) using the
Bolt (T) and one hex flange nut (U).
Feet (Figure 1B & 1C)
3. Use nuts (C) to mount the rubber feet (D) to the foot bracket
(E) (if not already assembled).
4. Mount the foot bracket (E) to the frame with two bolts (F)
(Figure 1B) and 4 M8 flange nuts (Figure 1C).
Wheels (GP5000/GP6000E/GP6500E) (Figure 1D)
5. Slide axle pin (G) through wheel (H), washer (I), and through
the bracket on the frame.
6. Secure axle pin (G) to the frame with the cotter pin (J).
7. Use a pliers and bend one tab of cotter pin (J) outward to lock
into place.
8. Repeat steps 5, 6, & 7 for other wheel.
Wheels (GP2600/GP2800)
9. Refer to Figure 1E to install the wheels as shown.
– Slide the axle (K) through the frame brackets.
– Slide on the wheels (H) then install the cotter pins (J).
General Information

5
Figure 1A – Handle Assembly (GP5000/GP6000E/
GP6500E)
Figure 1B – Handle Assembly/Foot Assembly
(GP2600/GP2800)
C
F
D
E
U
L
M
T
N
P
Figure 1C – Foot Assembly (GP5000/GP6000E/GP6500E)
E
F
D
R
S
Figure 1D – Wheel Assembly (GP5000/GP6000E/
GP6500E)
BEND ONE TAB
OUTWARD
AFTER AXLE
PIN (G) IS
INSERTED
THROUGH
THE FRAME
General Information

6
Figure 1E – Wheel Assembly (GP2600/GP2800)
1.2.2 BATTERY CABLE CONNECTION (ELECTRIC START
ONLY)
The unit has been deliberately shipped with the battery cables
disconnected. You will need a 10mm wrench to secure the battery
cables.
To connect the battery (see Figure 15 for connection details):
1. Cut off cable ties securing battery cables and remove red
covers from battery terminals.
2. First, connect the red cable to the positive (+) battery terminal
with the bolt, lock washer and nut supplied.
3. Connect the black cable to the negative (-) battery terminal
with the bolt, lock washer and nut supplied.
4. Make sure all connections are secure. Slide the rubber boots
over the terminals and connection hardware.
NOTE:
If the battery is unable to start the engine, charge it with the
12V charger included in the accessory box (see the "Charging a
Battery" section for details).
2.1 KNOW THE GENERATOR
Read the Owner’s Manual and Safety Rules before operating
this generator.
Compare the generator to Figures 2 through 4 to become
familiarized with the locations of various controls and adjustments.
Save this manual for future reference.
1. 230 Volt AC, 15 Amp, AS/NZS 3112 Receptacle – Supplies
electrical power for the operation of 230 Volt AC, 15 Amp,
single-phase, 50 Hz electrical lighting, appliance, tool and
motor loads.
3. Circuit Breakers (AC) – Each receptacle is provided with a
push-to-reset circuit breaker to protect the generator against
electrical overload.
4. Oil Drain – Use to drain engine oil.
5. Air Filter – Filters intake air as it is drawn into the engine.
6. Choke Knob – Used when starting a cold engine.
7. Fuel Tank – See generator Specifications for tank capacity.
8. Grounding Lug – Ground the generator to an approved earth
ground here. See "Grounding the Generator" for details.
9. Run/Stop Switch – Controls the operation of the generator
(pull start models).
9A. Start Switch – Used to start engine from the starter motor
(electric start models only).
10. Muffler – Quiets the engine.
11. Handle – Pivot and retract for storage. Press the spring-
loaded button to move handles (GP5000/GP6000E/GP6500E
only).
12. Gas Cap – Fuel fill location.
13. Fuel Gauge – Shows fuel level in tank.
14. Oil Fill – Add oil here.
15. Recoil Starter – Use to start engine manually.
16. Fuel Shut Off – Valve between fuel tank and carburetor.
17. Battery Charger Input – This receptacle allows the capability
to recharge the 12 volt DC storage battery provided with
the 12 Volt Adaptor Plug Charger which is included in the
Accessory Box. Located behind the battery charger input is
a 1.50 Amp in-line fuse which is inside the control panel to
protect the battery (electric start models only).
18. Battery – Powers the electric starter (electric start models
only).
19. Hourmeter – Tracks hours of operation (GP5000/GP6000E/
GP6500E only).
20. Spark Arrestor – Reduces fire hazards by containing sparks.
Figure 2A - Control Panel (GP5000)
Operation

7
Figure 2B - Control Panel (GP6000E/GP6500E)
Figure 2C - Control Panel (GP2600/GP2800)
Figure 3A - Generator Controls
(GP5000/GP6000E/GP6500E)
Figure 3B - Generator Controls (GP2600/GP2800)
Figure 3C - Generator Controls
(GP5000/GP6000E/GP6500E)
Operation

8
Figure 3D - Generator Controls (GP2600/GP2800)
7
12
6
5
16 15
Figure 3E - Muffler (GP2600/GP2800)
10
11
20
2.2 HOURMETER (GP5000/GP6000E/GP6500E
ONLY)
The Hourmeter tracks hours of operation for scheduled maintenance
(Figure 4):
There will be a "CHG OIL" message every 100 hours. The message
will flash one hour before and one hour after each 100 hour
interval, providing a two hour window to perform service.
This message will actually begin flashing at 99 hours and disable
itself at 101 hours again, providing a two hour window to perform
the service.
Every 200 hours the "SVC" icon on the lower left hand corner of
the display will flash. The message will flash one hour before and
one hour after each 200 hour interval providing a two hour window
to perform service.
When the hour meter is in the Flash Alert mode, the maintenance
message will always alternate with elapsed time in hours and
tenths. The hours will flash four times, then alternate with the
maintenance message four times until the meter resets itself.
• 100 hours - CHG OIL — Oil Change Interval (Every 100 hrs)
• 200 hours - SVC — Service Air Filter (Every 200 hrs)
NOTE:
The hour glass graphic will flash on and off when the engine
is running. This signifies that the meter is tracking hours of
operation.
Figure 4 – Hourmeter
HOUR GLASS
GRAPHIC
RESET BUTTON
(IF EQUIPPED)
0000.0
2.3 CONNECTION PLUGS
2.3.1 230 VAC, 15 AMP, AS/NZA 3112 F RECEPTACLE
This is a 230 Volt outlet (Figure 5) protected against overload by
a 15 Amp push-to-reset circuit breaker. Use each socket to power
230 Volt AC, single phase, 50 Hz electrical loads requiring up to a
combined 3,450 watts (3.4 kW) or 15 Amps of current. Use only
high quality, well-insulated, 3-wire grounded cord sets rated for
230 Volts at 15 Amps (or greater).
Keep extension cords as short as possible, preferably less than
5 meters long, to prevent voltage drop and possible overheating
of wires.
Operation

9
Figure 5 - 230 Volt AC, 15 Amp, AS/NZS 3112
Receptacle
2.4 HOW TO USE THE GENERATOR
To obtain contact information for the nearest authorized dealer,
contact AllPower Industries. For Australia 1 800 333 28, for New
Zealand 09 269 1160.

Never operate in an enclosed area or indoors!
NEVER use in the home, in a vehicle, or in
partly enclosed areas such as garages, EVEN
IF doors and windows are open! ONLY use
outdoors and far from open windows, doors,
vents, and in an area that will not accumulate
deadly exhaust.

The engine exhaust fumes contain carbon
monoxide, which can you cannot see or smell.
This poisonous gas, if breathed in sufficient
concentrations, can cause unconsciousness or
even death.

Adequate, unobstructed flow of cooling and
ventilating air is critical to correct generator
operation. Do not alter the installation or permit
even partial blockage of ventilation provisions,
as this can seriously affect safe operation
of the generator. The generator MUST be
operated outdoors.

This exhaust system must be properly
maintained. Do nothing that might render the
exhaust system unsafe or in noncompliance
with any local codes and/or standards.

The manufacturer recommends installing
a battery operated carbon monoxide alarm
indoors, according to the manufacturers
instructions.
2.4.1 SYSTEM GROUND
The generator has a system ground that connects the generator
frame components to the ground terminals on the AC output
receptacles.
Special Requirements
There may be federal, state, safety or health administration
regulations, local codes, or ordinances that apply to the intended
use of the generator.
Please consult a qualified electrician, electrical inspector, or the
local agency having jurisdiction:
• In some areas, generators are required to be registered with
local utility companies.
• If the generator is used at a construction site, there may be
additional regulations which must be observed.
2.4.2 CONNECTING TO A BUILDING’S ELECTRICAL
SYSTEM
Connections for standby power to a building’s electrical system
must be made by a qualified electrician. The connection must
isolate the generator power from utility power or other alternative
power sources and must comply with all applicable laws and
electrical codes.
Grounding The Generator
Local electrical codes may require proper grounding of the unit
(Figure 8). For that purpose, connecting a 2.59 mm stranded
copper wire to the grounding lug and to an earth-driven copper
or brass grounding rod (electrode) provides adequate protection
against electrical shock. However, local codes may vary widely.
Consult with a local electrician for grounding requirements in
the area.
Operation

10
Figure 8 - Grounding the Generator
Proper grounding of the generator will help prevent electrical
shock in the event of a ground fault condition in the generator or in
connected electrical devices. Proper grounding also helps dissipate
static electricity, which often builds up in ungrounded devices.
2.5 DON’T OVERLOAD THE GENERATOR
Overloading a generator in excess of its rated wattage capacity
can result in damage to the generator and to connected electrical
devices. Observe the following to prevent overloading the unit:
• Add up the total wattage of all electrical devices to be connected
at one time. This total should NOT be greater than the
generator's wattage capacity.
• The rated wattage of lights can be taken from light bulbs. The
rated wattage of tools, appliances and motors can usually be
found on a data label or decal affixed to the device.
• If the appliance, tool or motor does not give wattage, multiply
volts times ampere rating to determine watts (volts x amps =
watts).
• Some electric motors, such as induction types, require about
three times more watts of power for starting than for running.
This surge of power lasts only a few seconds when starting
such motors. Make sure to allow for high starting wattage when
selecting electrical devices to connect to the generator:
1. Figure the watts needed to start the largest motor.
2. Add to that figure the running watts of all other connected
loads.
2.6 BEFORE STARTING THE GENERATOR
Prior to operating the generator, engine oil and gasoline will need
to be added, as follows:
2.6.1 ADDING ENGINE OIL
Use no special additives. Select the oil's viscosity grade according
to the expected operating temperature (also see chart).
• Above 32 °F (0 °C), use SAE 30
• Between 40 °F and -10 °F (4 and -32 °C), use 10W-30
• Synthetic 5W-30 for all temperature ranges
SAE 30
SAE 3 0
10W-30
10W-30
Synthetic 5W-30
Syn t he tic 5 W -30

Any attempt to crank or start the engine
before it has been properly serviced with the
recommended oil may result in an engine
failure.
1. Place generator on a level surface (not to exceed 15° in any
direction).
2. Clean area around oil fill and remove oil fill cap.
3. Slowly fill engine with oil until the dipstick reads full. Stop
filling occasionally to check oil level.
4. Install dipstick and finger tighten securely.
5. Check engine oil level before starting each time thereafter.
2.6.2 ADDING GASOLINE

NEVER fill fuel tank indoors. Avoid spilling
gasoline on hot engine. Allow engine to cool
entirely before adding fuel. NEVER fill fuel tank
when engine is running or hot. DO NOT light
a cigarette or smoke when filling the fuel tank.
Gasoline is highly flammable and its vapors are
EXPLOSIVE.

Do not overfill the fuel tank. Always leave room
for fuel expansion. If the fuel tank is overfilled,
fuel can over flow onto a hot engine and cause
fire or an explosion. Wipe up any spilled fuel
immediately.
1. Use regular UNLEADED gasoline with the generator engine. Do
not use any gasoline containing more than 10% ethanhol. Do
not mix oil with gasoline.
2. Clean area around fuel fill cap, remove cap.
Operation

11
3. Slowly add unleaded regular gasoline to fuel tank. Be careful
not to overfill (Figure 9).
4. Install fuel cap and wipe up any spilled gasoline.
IMPORTANT: It is important to prevent gum deposits from forming
in fuel system parts such as the carburetor, fuel hose or tank during
storage. Fuel can attract moisture, which leads to separation and
formation of acids during storage. Acidic gas can damage the fuel
system of an engine while in storage. To avoid engine problems,
the fuel system should be emptied before storage of 30 days or
longer. See the "Storage" section. Never use engine or carburetor
cleaner products in the fuel tank as permanent damage may occur.
Figure 9 - Fuel Tank
DO NOT Fill Above Lip
Fuel
Fuel Tank
2.7 STARTING PULL START ENGINES

Never start or stop engine with electrical
devices plugged into the receptacles AND
devices turned on.
1. Unplug all electrical loads from the unit's receptacles before
starting the engine.
2. Make sure the unit is in a level position (not to exceed 15° in
any direction).
3. OPEN the Fuel Shut-off Valve (Figure 10).
4. Turn engine RUN/STOP switch to ON position (Figures 2C or
11).
5. Slide engine choke to the LEFT to FULL CHOKE position
(Figure 12).
Figure 10 - Fuel Shut-off Valve
6. To start engine, firmly grasp the recoil handle and pull slowly
until increased resistance is felt. Pull rapidly up and away.
7. When engine starts, move choke knob to 1/2-CHOKE position
until engine runs smoothly and then fully into RUN position.
If engine falters, move choke back out to 1/2-CHOKE position
until engine runs smoothly and then to RUN position.
NOTE:
If engine fires, but does not continue to run, move choke lever
to FULL CHOKE and repeat starting instructions.
IMPORTANT: Do not overload the generator. Also, do not overload
individual panel receptacles. These outlets are protected against
overload with push-to-reset-type circuit breakers. If amperage
rating of any circuit breaker is exceeded, that breaker opens and
electrical output to that receptacle is lost. Read “Don’t Overload the
Generator” carefully.
Figure 11 - Engine ON/OFF Switch
ENGINE ON/OFF SWITCH
(GP5000 ENGINES ONLY)
Figure 12 - Choke Position
CHOKE LEVER
LEFT = CHOKE (START)
RIGHT = RUN
Operation

12
2.8 STARTING ELECTRIC START ENGINES

Never start or stop engine with electrical
devices plugged into the receptacles AND
devices turned on.
1. Unplug all electrical loads from the unit's receptacles before
starting the engine.
2. Make sure the unit is in a level position (not to exceed 15° in
any direction).
3. Open the fuel shut-off valve (Figures 10).
4. Move engine CHOKE lever to FULL CHOKE position (Figure
12).
5. To start engine, press and hold the Start/Run/Stop switch
(control panel) in the “Start” position. The engine will crank
and attempt to start. When the engine starts, release the
switch to the run position.
6. When the engine starts, move choke knob to “1/2 Choke”
position until the engine runs smoothly and then fully in to the
“Run” position. If engine falters, move choke knob back out to
“1/2 Choke” position until the engine runs smoothly and then
to “Run” position.
2.8.1 MANUAL START
This generator is also equipped with a manual recoil starter which
may be used if the battery is discharged.
NOTE:
The switch must be in the RUN position. Use one of the
generator’s receptacle outlets along with the included battery
charger to charge the battery while the generator is running.
• To start manually, firmly grasp the recoil handle and pull slowly
until increased resistance is felt. Pull rapidly up and away to
start engine. Then follow the same choke sequence.
NOTE:
If engine fires, but does not continue to run, move choke lever
to FULL CHOKE and repeat starting instructions.
IMPORTANT: Do not overload the generator. Also, do not overload
individual panel receptacles. These outlets are protected against
overload with push-to-reset-type circuit breakers. If amperage
rating of any circuit breaker is exceeded, that breaker opens and
electrical output to that receptacle is lost. Read “Don’t Overload the
Generator” carefully.
2.9 STOPPING THE ENGINE
1. Shut off all loads, then unplug the electrical loads from
generator panel receptacles. Never start or stop the engine
with electrical devices plugged in and turned on.
2. Let engine run at no-load for several minutes to stabilize the
internal temperatures of engine and generator.
3. Move Run/Stop switch to OFF position.
4. Close fuel valve.
2.10 LOW OIL LEVEL SHUTDOWN SYSTEM
The engine is equipped with a low oil level sensor that shuts down
the engine automatically when the oil level drops below a specified
level. If the engine shuts down by itself and the fuel tank has
enough gasoline, check engine oil level.
2.10.1 SENSING LOW OIL LEVEL
If the system senses a low oil level during operation, the engine
shuts down. The engine will not run until the oil has been refilled
to the proper level.
2.11 CHARGING THE BATTERY (ELECTRIC START
UNITS ONLY)

Storage batteries give off explosive hydrogen
gas while recharging. An explosive mixture will
remain around the battery for a long time after
it has been charged. The slightest spark can
ignite the hydrogen and cause an explosion.
Such an explosion can shatter the battery and
cause blindness or other serious injury.

Do not permit smoking, open flame, sparks
or any other source of heat around a battery.
Wear protective goggles, rubber apron and
rubber gloves when working around a battery.
Battery electrolyte fluid is an extremely
corrosive sulfuric acid solution that can cause
severe burns. If spill occurs flush area with
clear water immediately.
NOTE:
The battery shipped with the generator has been fully charged.
A battery may lose some of its charge when not in use for
prolonged periods of time. If the battery is unable to crank the
engine, plug in the 12V charger included in the accessory box.
RUNNING THE GENERATOR DOES NOT CHARGE THE BATTERY.
Use battery charger plug to keep the battery charged and ready for
use. Battery charging should be done in a dry location.
1. Plug charger into “Battery Charger Input” jack, located on
the control panel (Figure 13). Plug wall receptacle end of the
battery charger into a 230 Volt AC wall outlet.
2. Unplug battery charger from wall outlet and control panel jack
when generator is going to be in use.
NOTE:
Do not plug the 12v battery charger adapter into the generator
receptacle to charge the the battery. Do not use the battery
charger for more than 48 hours at one charge.
Operation

13
Maintenance
Figure 13 - Battery Charger Jack
BATTERY
CHARGER
INPUT
3.1 PERFORMING SCHEDULED MAINTENANCE
It is important to perform service as specified in the Maintenance
Schedule for proper generator operation, and to ensure that the
generator complies with the applicable emission standards for the
duration of its useful life. Service and repairs may be performed by
any capable person or repair shop. Additionally, emissions critical
maintenance must be performed as scheduled in order for the
Emissions Warranty to be valid. Emissions critical maintenance
consists of servicing the air filter and spark plugs in accordance
with the Maintenance Schedule.
3.2 MAINTENANCE SCHEDULE
3.2.1 GP5000/GP6000E/GP6500E MAINTENANCE
SCHEDULE
Follow the calendar intervals. More frequent service is required
when operating in adverse conditions noted below.
Check Oil Level At Each Use
Change Oil ‡ *Every 100 hours or Every Season
Check Valve Clearance ***Every Season
Service Air Filter ** Every 200 hours or Every Season
Replace Spark Plug Every Season
‡ Change oil after first 30 hours of operation then every season.
* Change oil and oil filter every month when operating under heavy load or in high
temperatures.
** Clean more often under dirty or dusty operating conditions. Replace air filter
parts if they cannot be adequately cleaned.
*** Check valve clearance and adjust if necessary after first 50 hours of
operation and every 100 hours thereafter.
3.2.2 GP2600/GP2800 MAINTENANCE SCHEDULE
Follow the calendar intervals. More frequent service is required
when operating in adverse conditions noted below.
Check Oil Level At Each Use
Change Oil ¥ *Every 50 Hours
Check Valve Clearance ***Every Season
Service Air Filter **Every 25 Hours
Replace Spark Plug ****Every 100 Hours
¥ Change oil after first 20 hours of operation.
* Change oil every month when operating under heavy load or in high
temperatures.
** Clean more often under dirty or dusty operating conditions. Replace air filter
parts if they cannot be adequately cleaned.
*** Check valve clearance and adjust if necessary after first 50 hours of
operation and every 100 hours thereafter.
**** Clean and re-gap spark plug every 50 hours.
3.3 PRODUCT SPECIFICATIONS
3.3.1 GP5000/GP6000E/GP6500E GENERATOR
SPECIFICATIONS
Rated Power ............................................................5.0/6.0/6.5 kW*/**
Surge Power ...................................................................7.5/9.0/9.0 kW
Rated AC Voltage .............................................................................230
Rated AC Load
Current @ 230V (5.0/6.0/6.5 kW) ..................21.7/26.0/28.2 Amps**
Rated Frequency .................................................... 50 Hz @ 3000 RPM
Phase ................................................................................ Single Phase
Weight (GP5000/GP6000E/GP6500E).......................82.5 kg (181.5 lbs)/
88.9 kg (195.5 lbs)/88.9 kg (195.5 lbs)
* Operating temperature range: -18° C (0 °F) to 40 °C (104 °F) When operated
above 25 °C (77 °F), there may be a decrease in engine power.
** Maximum wattage and current are subject to, and limited by, such factors
as fuel Btu content, ambient temperature, altitude, engine condition, etc..
Maximum power decreases about 3.5% for each 1,000 feet above sea level.
3.3.2 GP2600/GP2800 GENERATOR SPECIFICATIONS
Rated. Power ................................................................2.6/ 2.8 kW*/**
Surge Power ...............................................................................3900W
Rated AC Voltage .............................................................................230
Rated Current...........................................................11.3/ 12.1 Amps**
Rated Frequency .................................................... 50 Hz @ 3000 RPM
Phase ................................................................................ Single Phase
Weight (GP2600/GP2800) .............................................50 kg (110 lbs)
* Operating temperature range: -18 °C (0 °F) to 40 C (104 °F) When operated
above 25 °C (77 °F), there may be a decrease in engine power.
** Maximum wattage is subject to, and limited by, such factors as fuel Btu
content, ambient temperature, altitude, engine condition, etc.. Maximum power
decreases about 3.5% for each 1,000 feet above sea level.

Notes
14
3.3.3 GP5000/GP6000E/GP6500E ENGINE
SPECIFICATIONS
Displacement...............................389 cc (5.0 kW)/420 cc (6.0/6.5 kW)
Spark Plug Type............................................ NHSP F6RTC or equivalent
Spark Plug Part No. .......................................................... 0G84420101
Spark Plug Gap............................................................... 0.70-0.80 mm
Gasoline Capacity (5.0/6.0/6.5 kW) ...................................25.6L/28.4 L
Oil Type.................. See Chart in "Before Starting the Generator" Section
Oil Capacity ......................................................................................1 L
Run Time at 50% Load (5.0/6.0/6.5 kW)............... 10.8/10.5/ 9.0 Hours
3.3.4 GP2600/GP2800 ENGINE SPECIFICATIONS
Displacement..............................................................................208 cc
Spark Plug Type..........................................TORCH F6RTC or equivalent
Spark Plug Gap........................................................................0.76 mm
Gasoline Capacity ........................................................................12.7 L
Oil Type.................. See Chart in "Before Starting the Generator" Section
Oil Capacity ...................................................................................0.6 L
Run Time @ 50% load (2.6/ 2.8 kW)...........................12.5/ 11.0 hours
3.4 GENERAL RECOMMENDATIONS
The warranty of the generator does not cover items that have been
subjected to operator abuse or negligence. To receive full value
from the warranty, the operator must maintain the generator as
instructed in this manual.
Some adjustments will need to be made periodically to properly
maintain the generator.
All adjustments in the Maintenance section of this manual should
be made at least once each season. Follow the requirements in the
"Maintenance Schedule".
NOTE:
Once a year replace the spark plug and replace the air filter.
A new spark plug and clean air filter assure proper fuel-air
mixture and help the engine run better and last longer.
3.4.1 GENERATOR MAINTENANCE
Generator maintenance consists of keeping the unit clean and dry.
Operate and store the unit in a clean dry environment where it will
not be exposed to excessive dust, dirt, moisture or any corrosive
vapors. Cooling air slots in the generator must not become
clogged with snow, leaves, or any other foreign material.
Check the cleanliness of the generator frequently and clean when
dust, dirt, oil, moisture or other foreign substances are visible on
its exterior surface.

Never insert any object or tool through the air
cooling slots, even if the engine is not running.
NOTE:
DO NOT use a garden hose to clean generator. Water can enter
the engine fuel system and cause problems. In addition, if water
enters the generator through cooling air slots, some water will
be retained in voids and crevices of the rotor and stator winding
insulation. Water and dirt buildup on the generator internal
windings will eventually decrease the insulation resistance of
these windings.
3.4.2 TO CLEAN THE GENERATOR
• Use a damp cloth to wipe exterior surfaces clean.
• A soft, bristle brush may be used to loosen caked on dirt, oil,
etc.
• A vacuum cleaner may be used to pick up loose dirt and debris.
• Low pressure air (not to exceed 25 psi) may be used to
blow away dirt. Inspect cooling air slots and openings
on the generator. These openings must be kept clean and
unobstructed.
3.4.3 ENGINE MAINTENANCE

When working on the generator, always
disconnect negative cable from battery. Also
disconnect spark plug wire from spark plug and
keep wire away from spark plug.
3.4.4 CHECKING OIL LEVEL
See the “Before Starting the Generator” section for information on
checking the oil level. The oil level should be checked before each
use, or at least every eight hours of operation. Keep the oil level
maintained.
3.4.5 CHANGING THE OIL
Change the oil after the first 20 to 30 hours of operation. Change
the oil every 50 to 100 hours or every season thereafter. If running
this unit under dirty or dusty conditions, or in extremely hot
weather, change the oil more often.

Hot oil may cause burns. Allow engine to
cool before draining oil. Avoid prolonged
or repeated skin exposure with used oil.
Thoroughly wash exposed areas with soap.
Use the following instructions to change the oil after the engine
cools down:
1. Clean area around oil drain plug.
2. Remove oil drain plug from engine and oil fill plug to drain oil
completely into a suitable container.
3. When oil has completely drained, install oil drain plug and
tighten securely.
4. Fill oil sump with recommended oil. (See “Before Starting the
Generator” for oil recommendations).
5. Wipe up any spilled oil.
6. Dispose of used oil at a proper collection center.
Maintenance

15
3.4.6 REPLACING THE SPARK PLUG
See Engine Specifications for recommended spark plug. Replace
the plug once each year. This will help the engine start easier and
run better.
1. Stop the engine and pull the spark plug wire off of the spark
plug.
2. Clean the area around the spark plug and remove it from the
cylinder head.
3. Set the spark plug's gap to 0.70-0.80 mm. Install the correctly
gapped spark plug into the cylinder head (Figure 14).
Figure 14 - Spark Plug Gap
3.4.7 BATTERY REPLACEMENT (IF APPLICABLE)
NOTE:
The battery shipped with the generator has been fully charged.
A battery may lose some of its charge when not in use for
prolonged periods of time. If the battery is unable to crank the
engine, plug in the 12V charger included in the accessory box
(see the Charging a Battery section). RUNNING THE GENERATOR
DOES NOT CHARGE THE BATTERY. The part number for this
battery is 0G9449.

The NEGATIVE battery terminal should:
1. Always be DISCONNECTED FIRST.
2. Always be CONNECTED LAST.
Figure 15 - Battery Connections
RED (+)
BLACK (-)
3.4.8 SPARK ARRESTOR
The engine exhaust muffler has a spark arrestor screen. Inspect
and clean the screen at least once each year (Figures 16 and 17).
If unit is used regularly, inspect and clean more often.
NOTICE:
If using the generator on any forest-covered, brush-covered
or grass-covered unimproved land, it must equipped with a
spark arrestor. The spark arrestor must be maintained in good
condition by the owner/operator.
Clean and inspect the spark arrestor as follows:
1. Remove clamp and spark arrestor from muffler.
2. Inspect screen and replace if torn, perforated or otherwise
damaged. DO NOT USE a defective screen. If screen is not
damaged, clean it with commercial solvent.
3. Replace the spark arrestor and clamp.
Figure 16 – Spark Arrestor GP5000/GP6000E/GP6500E
Arrestor Screen
Clamp
SparkArrestor
Screen
Cone
Screw
Figure 17 - Spark Arrestor GP2600/GP2800
Clamp
SparkArrestor
Screen
Cone
Maintenance

16
3.5 SERVICE AIR CLEANER
3.5.1 GP5000/GP6000E/GP6500E AIR CLEANER
The engine will not run properly and may be damaged if using a
dirty air cleaner. Clean or replace the air filter once a year. Clean or
replace more often if operating under dusty conditions (Figure 18).
The air filter part number is 0G84420151.
To clean or replace air filter:
1. Remove air cleaner cover and remove filter.
2. Wash in soapy water. Squeeze filter dry in clean cloth (DO
NOT TWIST).
3. Clean air cleaner cover, then insert filter into the base of the
air cleaner. Re-install air cleaner cover.
Figure 18 - Air Filter (GP5000/GP6000E/GP6500E)
KNOB TO
OPEN AIRBOX
3.5.2 GP2600/GP2800 AIR CLEANER
The engine will not run properly and may be damaged if using a
dirty air filter. Clean the air filter every 25 hours (Figure 19). Clean
or replace more often if operating under dusty conditions.
1. Remove air filter cover.
2. Wash in soapy water. Squeeze filter dry in clean cloth (DO
NOT TWIST).
3. Clean air filter cover before re-installing it.
Figure 19 - Air Filter
AIR FILTER
COVER
AIR
FILTER
UNLOCK
COVER MOVE TO
THE RIGHT
3.6 VALVE CLEARANCE
3.6.1 GP5000/GP6000E/GP6500E VALVE CLEARANCE
• Intake — 0.15 ± 0.02 mm (cold)
• Exhaust — 0.20 ± 0.02 mm (cold)
After the first 50 hours of operation, check the valve clearance
in the engine and adjust if necessary.
Important: If feeling uncomfortable about doing this procedure or
the proper tools are not available, please take the generator to the
nearest service center to have the valve clearance adjusted. This is
a very important step to ensure longest life for the engine.
3.6.2 GP2600/GP2800 VALVE CLEARANCE
• Intake — 0.10 ± 0.02 mm (cold)
• Exhaust — 0.15 ± 0.02 mm (cold)
After the first 50 hours of operation, check the valve clearance
in the engine and adjust if necessary.
Important: If feeling uncomfortable about doing this procedure or
the proper tools are not available, please take the generator to the
nearest service center to have the valve clearance adjusted. This is
a very important step to ensure longest life for the engine.
3.7 GENERAL
The generator should be started at least once every 30 days and
be allowed to run at least 30 minutes. If this cannot be done and
the unit must be stored for more than 30 days, use the following
information as a guide to prepare it for storage.

NEVER store engine with fuel in tank indoors
or in enclosed, poorly ventilated areas where
fumes may reach an open flame, spark or pilot
light as on a furnace, water heater, clothes
dryer or other gas appliance.

Allow unit to cool entirely before storage.
Maintenance