0171950en 002
0609
Generator
GP 6600A
GPS 6600A
CARB
OPERATOR’S MANUAL
0171950EN
DANGER
CARBON MONOXIDE
Using a generator indoors CAN KILL YOU IN MINUTES.
Generator exhaust contains carbon monoxide (CO). This is a poison you cannot see or
smell. If you can smell the generator exhaust, you are breathing CO. But even if you cannot
smell the exhaust, you could be breathing CO.
• NEVER use a generator inside homes, garages, crawlspaces, or other partly enclosed
areas. Deadly levels of carbon monoxide can build up in these areas. Using a fan or
opening windows and doors does NOT supply enough fresh air.
• ONLY use a generator outside and far away from windows, doors, and vents. These
openings can pull in generator exhaust.
Even when you use a generator correctly, CO may leak into the home. ALWAYS use a
battery-powered or battery-backup CO alarm in the home.
If you start to feel sick, dizzy, or weak after the generator has been running, move to fresh
air RIGHT AWAY. See a doctor. You could have carbon monoxide poison.
Foreword
WARNING
CALIFORNIA
Proposition 65 Warning:
Engine exhaust, some of its constituents, and certain vehicle
components, contain or emit chemicals known to the State of
California to cause cancer and birth defects or other reproductive
harm.
This manual provides information and procedures to safely operate
and maintain this Wacker Neuson model. For your own safety and
protection from injury, carefully read, understand and observe the
safety instructions described in this manual.
Keep this manual or a copy of it with the machine. If you lose this
manual or need an additional copy, please contact Wacker Neuson
Corporation. This machine is built with user safety in mind; however,
it can present hazards if improperly operated and serviced. Follow
operating instructions carefully! If you have questions about operating
or servicing this equipment, please contact Wacker Neuson
Corporation.
The information contained in this manual was based on machines in
production at the time of publication. Wacker Neuson Corporation
reserves the right to change any portion of this information without
notice.
All rights, especially copying and distribution rights, are reserved.
Copyright 2009 by Wacker Neuson Corporation.
No part of this publication may be reproduced in any form or by any
means, electronic or mechanical, including photocopying, without
express written permission from Wacker Neuson Corporation.
Any type of reproduction or distribution not authorized by Wacker
Neuson Corporation represents an infringement of valid copyrights
and will be prosecuted. We expressly reserve the right to make
technical modifications, even without due notice, which aim at
improving our machines or their safety standards.
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GP/GPS 6600A Table of Contents
Foreword 3
1. California Evaporative Emission Control Warranty Statement 7
2. Safety Information 9
2.1 Laws Pertaining to Spark Arresters ...................................................... 9
2.2 Operating Safety ................................................................................ 10
2.3 Operator Safety while using Internal Combustion Engines ................ 12
2.4 Service Safety .................................................................................... 13
2.5 Label Locations .................................................................................. 14
2.6 Safety and Operating Labels .............................................................. 15
3. Operation 19
3.1 Determining Power Requirements ..................................................... 19
3.2 Installation .......................................................................................... 20
3.3 Recommended Battery (GPS only) .................................................... 20
3.4 Battery Installation (GPS only) ........................................................... 21
3.5 Wheel Kit ............................................................................................ 22
3.6 Generator Derating ............................................................................. 24
3.7 Grounding the Generator ................................................................... 25
3.8 Operating Heavy Loads ...................................................................... 25
3.9 Use of Extension Cords ...................................................................... 26
3.10 Control Panel ...................................................................................... 27
3.11 Ground Fault Circuit Interrupter (GFCI) .............................................. 28
3.12 Twist-Lock Receptacles ..................................................................... 29
3.13 Engine Auto Idle ................................................................................. 29
3.14 Engine Speed ..................................................................................... 29
3.15 Voltage Selection ............................................................................... 30
3.16 Before Starting ................................................................................... 31
3.17 To Start ............................................................................................... 32
3.18 To Stop ............................................................................................... 33
5
Table of Contents GP/GPS 6600A
4. Maintenance 34
4.1 Engine Maintenance ............................................................................34
4.2 Periodic Maintenance Schedule ..........................................................34
4.3 Engine Oil ............................................................................................35
4.4 Servicing Air Cleaner ...........................................................................36
4.5 Spark Plug ...........................................................................................37
4.6 Cleaning the Sediment Cup ................................................................38
4.7 Carburetor Adjustment ........................................................................39
4.8 Adjusting Engine Speed ......................................................................39
4.9 Storage ................................................................................................40
4.10 Transport .............................................................................................40
4.11 Troubleshooting ...................................................................................41
4.12 Wire Colors ..........................................................................................42
4.13 Electrical Schematic ............................................................................42
4.14 Engine Schematic ...............................................................................44
5. Technical Data 46
5.1 Generator ............................................................................................46
5.2 Engine .................................................................................................47
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California Evaporative Emission Control Warranty Statement
1. California Evaporative Emission Control Warranty Statement
YOUR WARRANTY RIGHTS AND OBLIGATIONS
The California Air Resources Board and Wacker Neuson Corporation,
Inc., are pleased to explain the evaporative emission control system
(EECS) warranty on your model year 2008 and later portable
generator. In California, new portable generators must be designed,
built and equipped to meet the State’s stringent anti-smog standards.
Wacker Neuson Corporation must warrant the EECS on your portable
generator for the period of time listed below, provided there has been
no abuse, neglect or improper maintenance of your portable generator.
Your EECS on your model year 2008 and later portable generator
includes the fuel and vent line, fuel and vent line clamps, fuel and vent
line fittings, carbon canister, fuel tank and fuel tank cap.
Where a warrantable condition exists, Wacker Neuson Corporation will
repair your portable generator at no cost to you including diagnosis,
parts and labor.
MANUFACTURER’S WARRANTY COVERAGE:
This EECS is warranted for two years from the initial date of purchase.
If any evaporative emission-related part on your equipment is
defective, the part will be repaired or replaced by Wacker Neuson
Corporation at no charge to you. The owner shall not be charged for
diagnostic labor that leads to determination that a warranted part is in
fact defective, provided that such diagnostic work is performed at a
Wacker Neuson Corporation authorized service center.
WARRANTY PERIOD:
Any warranted part that is not scheduled for replacement as required
maintenance, or which is scheduled only for regular inspection to the
effect of “repair or replace as necessary”, shall be warranted for two
years. Any warranted part that is scheduled for replacement as
required maintenance shall be warranted for a time not less than the
remaining warranty period.
7
California Evaporative Emission Control Warranty Statement
OWNER’S WARRANTY RESPONSIBILITIES:
As the portable generator owner, you are responsible for performance
of the required maintenance listed in your Operator’s Manual. Wacker
Neuson Corporation recommends that you retain all receipts covering
maintenance on your portable generator, but Wacker Neuson
Corporation cannot deny warranty solely for the lack of receipts.
As the portable generator owner, you should however be aware that
Wacker Neuson Corporation may deny you warranty coverage if your
portable generator or a part has failed due to abuse, neglect, or
improper maintenance or unapproved modifications.
You are responsible for presenting your portable generator to Wacker
Neuson Corporation’s authorized service center as soon as the
problem exists. The warranty repairs should be completed in a
reasonable amount of time, not to exceed 30 days. If you have a
question regarding your warranty coverage, you should contact your
nearest authorized Wacker Neuson service center or call 1-800-770-
0957.
WHAT IS NOT COVERED:
All failures caused by abuse, neglect, or improper maintenance are not
covered. In addition, the use of add-on or modified parts will be
grounds for disallowing a warranty claim.
WARRANTED PARTS:
The repair or replacement of any warranted part otherwise eligible for
warranty coverage may be excluded from such warranty coverage if
Wacker Neuson Corporation demonstrates that the portable generator
has been abused, neglected, or improperly maintained, and that such
abuse, neglect, or improper maintenance was the direct cause of the
need for repair or replacement of the part. That notwithstanding, any
adjustment of a component that has a factory installed, and properly
operating, adjustment limiting device is still eligible for warranty
coverage. The following emission warranty parts are covered:
(1) Fuel and Vent Lines
(2) Fuel and Vent Line Clamps
(3) Fuel and Vent Line Fittings
(4) Carbon Canister
(5) Fuel Tank
(6) Fuel Tank Cap
8
GP/GPS 6600A Safety Information
2. Safety Information
This manual contains DANGER, WARNING, CAUTION, NOTICE, and
NOTE callouts which must be followed to reduce the possibility of
personal injury, damage to the equipment, or improper service.
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that follow this
symbol to avoid possible injury or death.
DANGER indicates a hazardous situation which, if not avoided, will
result in death or serious injury.
DANGER
WARNING indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
WARNING
CAUTION indicates a hazardous situation which, if not avoided, could
result in minor or moderate injury.
CAUTION
NOTICE: Used without the safety alert symbol, NOTICE indicates a
situation which, if not avoided, could result in property damage.
Note: Contains additional information important to a procedure.
2.1 Laws Pertaining to Spark Arresters
Notice: State Health Safety Codes and Public Resources Codes
specify that in certain locations spark arresters be used on internal
combustion engines that use hydrocarbon fuels. A spark arrester is a
device designed to prevent accidental discharge of sparks or flames
from the engine exhaust. Spark arresters are qualified and rated by
the United States Forest Service for this purpose.
In order to comply with local laws regarding spark arresters, consult
the engine distributor or the local Health and Safety Administrator.
9
Safety Information GP/GPS 6600A
2.2 Operating Safety
Using a generator indoors CAN KILL YOU IN MINUTES. Generator
exhaust contains carbon monoxide. This is a poison you cannot see or
smell. NEVER use this generator inside a home or garage, EVEN IF
DANGER
DANGER
doors and windows are open. Only use this generator OUTSIDE and
far away from windows, doors, and vents.
BACKFEED FROM THE GENERATOR INTO THE PUBLIC POWER
DISTRIBUTION SYSTEM CAN CAUSE SERIOUS INJURY OR
DEATH TO UTILITY WORKERS!
Improper connection of generator to a building’s electrical system can
allow electrical current from the generator to backfeed into utility lines.
This may result in electrocution of utility workers, fire, or explosion.
Connections to a building’s electrical system must be made by a
qualified electrician and comply with all applicable laws and electrical
codes.
If connected to a building’s electrical system the generator must meet
the power, voltage, and frequency requirements of the equipment in
the building. Differences in power, voltage, and frequency
requirements may exist and improper connection may lead to
equipment damage, fire, and personal injury or death.
Familiarity and proper training are required for the safe operation of the
machine. Machines operated improperly or by untrained personnel
can be hazardous. Read the operating instructions contained in this
WARNING
manual and the engine manual, and familiarize yourself with the
location and proper use of all controls. Inexperienced operators should
receive instruction from someone familiar with the machine before
being allowed to operate it.
2.2.1 NEVER operate the generator when open containers of fuel, paint, or
other flammable liquids are near.
2.2.2 NEVER operate the generator, or tools attached to the generator, with
wet hands.
2.2.3 NEVER use worn electrical cords. Severe electrical shock and
equipment damage may result.
2.2.4 NEVER run the electrical cords under the generator, or over vibrating
or hot parts.
2.2.5 NEVER enclose or cover the generator when it is in use or when it is
hot.
2.2.6 NEVER overload the generator. The total amperage of the tools and
equipment attached to the generator must not exceed the load rating
of the generator.
2.2.7 NEVER operate the machine in snow, rain, or standing water.
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GP/GPS 6600A Safety Information
2.2.8 NEVER allow untrained personnel to operate or service the generator.
The generator set should be set up by a certified electrician.
2.2.9 NEVER stand on the machine.
2.2.10 DO NOT stand under the machine while it is being hoisted or moved.
2.2.11 DO NOT attach equipment to the machine when it is suspended.
2.2.12 Store the machine properly when it is not being used. The machine
should be stored in a clean, dry location out of the reach of children.
2.2.13 ALWAYS position and operate the generator on a firm,
noncombustible, level surface.
2.2.14 ALWAYS transport the generator in an upright position.
2.2.15 ALWAYS keep the machine at least one meter (three feet) away from
structures, buildings, and other equipment during use.
2.2.16 ALWAYS keep the area immediately surrounding and underneath the
machine clean, neat, and free of debris and combustible materials.
Make sure that the area overhead is clear of debris that could fall onto
or into the machine or exhaust compartment.
2.2.17 ALWAYS remove all tools, cords, and other loose items from the
generator before starting it.
2.2.18 ALWAYS make certain the machine is well-grounded and securely
fastened to a good earthen ground per national and local regulations.
11
Safety Information GP/GPS 6600A
2.3 Operator Safety while using Internal Combustion Engines
Internal combustion engines present special hazards during operation
and fueling. Read and follow the warning instructions in the engine
owner’s manual and the safety guidelines below. Failure to follow the
WARNING
DANGERDANGER
2.3.1 Do not smoke while operating the machine.
2.3.2 Do not smoke when refueling the engine.
2.3.3 Do not refuel a hot or running engine.
2.3.4 Do not refuel the engine near an open flame.
2.3.5 Do not spill fuel when refueling the engine.
2.3.6 Do not run the engine near open flames.
warnings and safety standards could result in severe injury or death.
NEVER install a generator in an enclosed area such as a tunnel or a
trench. Using a generator in a tunnel or a trench CAN KILL YOU IN
MINUTES. Generator exhaust contains carbon monoxide. This is a
poison you cannot see or smell. NEVER use this generator inside a
tunnel or a trench.
2.3.7 Do not start the engine if fuel has spilled or a fuel odor is present. Move
the generator away from the spill and wipe the generator dry before
starting.
2.3.8 Refill the fuel tank in a well-ventilated area.
2.3.9 Replace the fuel tank cap after refueling.
2.3.10 ALWAYS check the fuel lines and the fuel tank for leaks and cracks
before starting the engine. Do not run the machine if fuel leaks are
present or the fuel lines are loose.
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GP/GPS 6600A Safety Information
2.4 Service Safety
Poorly maintained equipment can become a safety hazard! In order
for the equipment to operate safely and properly over a long period of
time, periodic maintenance and occasional repairs are necessary. If
WARNING
2.4.1 Do not use gasoline or other types of fuels or flammable solvents to
2.4.2 DO NOT attempt to clean or service the machine while it is running.
2.4.3 Do not modify the machine without the express written approval of the
2.4.4 DO NOT allow water to accumulate around the base of the machine.
the generator is experiencing problems or is being serviced, attach a
“DO NOT START” sign to the control panel to notify other people of its
condition.
clean parts, especially in enclosed areas. Fumes from fuels and
solvents can become explosive.
manufacturer.
If water is present, move the machine and allow the machine to dry
before servicing.
2.4.5 DO NOT service the machine if your clothing or skin is wet.
2.4.6 DO NOT allow untrained personnel to service this equipment. Only
trained electrical technicians should be allowed to service the electrical
components of this equipment.
2.4.7 Keep the machine clean and labels legible. Replace all missing and
hard-to-read labels. Labels provide important operating instructions
and warn of dangers and hazards.
2.4.8 ALWAYS replace the safety devices and guards after repairs and
maintenance.
2.4.9 ALWAYS let the engine cool before transporting or servicing the
machine.
2.4.10 ALWAYS keep hands, feet, and loose clothing away from the moving
parts on the generator and engine.
2.4.11 ALWAYS turn the engine off before servicing the machine. If the
engine has electric start, disconnect the negative terminal on the
battery before servicing the machine.
2.4.12 ALWAYS keep the fuel lines in good condition and properly connected.
Leaking fuel and fumes are extremely explosive.
13
Safety Information GP/GPS 6600A
2.5 Label Locations
GND
88897
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GP/GPS 6600A Safety Information
2.6 Safety and Operating Labels
Wacker Neuson machines use international pictorial labels where
needed. These labels are described below:
Label Meaning
WARNING!
Hot surface!
CAUTION
Lifting point.
GND
88897
Electrical ground
Press circuit breaker switch to OFF position.
Check the fuel level.
15
Safety Information GP/GPS 6600A
Label Meaning
Open the fuel flow valve.
Press engine switch to ON position.
GPS - Press ignition switch.
GP - Pull the rewind starter.
Press circuit breaker switch to ON position.
Press engine switch to OFF position.
Close the fuel flow valve.
Using a generator indoors CAN KILL YOU IN MINUTES. Generator exhaust contains carbon monoxide. This is a poison you cannot see or smell.
NEVER use inside a home or garage, EVEN
IF doors and windows are open.
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GP/GPS 6600A Safety Information
Label Meaning
Only use OUTSIDE and far away from windows, doors, and vents.
WARNING!
To reduce the risk of electrical shock and arc
flash, read the Operator’s Manual. Improper
connection of the generator to a building’s
electrical system can allow electrical current
from the generator to backfeed into utility lines.
This may result in electrocution of utility workers, fire, or explosion. Connections to a building’s electrical system must be made by a
qualified electrician and comply with all applicable laws and electrical codes.
A nameplate listing the model number, item
number, revision number, and serial number is
attached to each unit. Please record the information found on this plate so it will be available should the nameplate become lost or
damaged. When ordering parts or requesting
service information, you will always be asked
to specify the model number, item number,
revision number, and serial number of the unit.
Important Emissions Information
This equipment meets California EVP
emission regulations for small off-road
engines.
This machine may be covered by one or more
patents.
17
Safety Information GP/GPS 6600A
Label Meaning
DANGER!
No sparks, flames or burning objects near
machine.
Shut off the engine before refueling.
Read the Operator’s Manual for machine
information.
WARNING
Operation of this equipment may create sparks
that can start fires around dry vegetation. A
spark arrestor may be required. The operator
should contact local fire agencies for laws or
regulations relating to fire prevention
requirements.
GFCI TEST INSTRUCTIONS - TEST BEFORE EACH USE
Normal operating state - sensing device green LED is "ON" and circuit breaker is at "ON"
position.
Step 1: Press "TEST" button. Green LED should go "OUT" and red LED should come
"ON" and circuit breaker should trigger to "OFF" position.
Step 2: If sensing device LED or breaker does not trip or change state, "DO NOT USE".
Consult an electrician for assistance.
Step 3: Press "RESET" button. Red LED should turn "OFF" and green LED should turn
"ON".
Step 4: Manually reset (switch) circuit breaker to "ON" position to restore circuit power.
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GP/GPS 6600A Operation
3. Operation
3.1 Determining Power Requirements
This generator is designed to operate single-phase, 60 Hz appliances
running at 120 VAC or 240 VAC. Check the nameplate or label
provided on tools and appliances to make sure their power
requirements match the power output of the generator.
Some appliances and tools require a surge of current when starting.
This means that the amount of power needed to initially start the
equipment is larger than the power required to keep it running. The
generator must be capable of supplying this “surge” current. Other
types of appliances require more power than is actually stated on their
nameplate.
The information in “Approximate Starting Power Requirements” is
offered only as a general guideline to help you in determining power
requirements for different types of equipment. Check with your nearest
Wacker Neuson dealer, or contact the manufacturer or dealer of the
tool or appliance, with questions regarding its power requirements.
NOTICE: If a tool or appliance does not reach full speed within a few
seconds when switched on, turn it off immediately to avoid damage.
Approximate Starting Power Requirements
• Incandescent lights and appliances such as irons and hot plates, which
use a resistive-type heating element, require the same wattage to start
and run as is stated on their nameplates.
• Fluorescent and mercury lamps require 1.2–2 times their stated
wattage to start.
• Electrical motors and many types of electrical tools often require a
large starting current. The amount of starting current depends on the
type of motor and its use.
• Most electrical tools require 1.2–3 times their stated wattage for
starting.
• Loads such as submersible pumps and air compressors require a very
large force to start. They need as much as 3–5 times the wattage
stated on the nameplate in order to start.
If the wattage is not given for a particular tool or appliance, it can be
calculated by multiplying its voltage and amperage requirements:
Single Phase: VOLTS x AMPS = WATTS
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Operation GP/GPS 6600A
3.2 Installation
Place the generator in an area where it will not be exposed to rain,
snow, or direct sunlight. Make sure it is positioned on firm, level
ground, so it will not slide or shift. Position the engine exhaust away
from areas where people may be present.
The surrounding area must be free from water and moisture. All
components must be protected from excessive moisture.
Using a generator indoors CAN KILL YOU IN MINUTES. Generator
exhaust contains carbon monoxide. This is a poison you cannot see or
smell. NEVER use this generator inside a home or garage, EVEN IF
DANGER
DANGERDANGER
doors and windows are open. Only use this generator OUTSIDE and
far away from windows, doors, and vents.
NEVER install a generator in an enclosed area such as a tunnel or a
trench. Using a generator in a tunnel or a trench CAN KILL YOU IN
MINUTES. Generator exhaust contains carbon monoxide. This is a
poison you cannot see or smell. NEVER use this generator inside a
tunnel or a trench.
3.3 Recommended Battery (GPS only)
This generator is shipped without a battery. The recommended battery
to be used is:
Battery Type 50-N18L-A
Voltage 12 V
Capacity 20 A/h
L x W x H 206 x 90 x 164 mm
(8-1/8 x 3-9/16 x 6-7/16 in.)
20
GP/GPS 6600A Operation
3.4 Battery Installation (GPS only)
3.4.1 Align the holes found in the battery tray (a) to the holes on the frame
cross-member
3.4.2 Insert M8 x 14 screws (b) through the tray then through the holes of
the cross-member.
3.4.3 Insert the nuts (c) onto the screws and tighten. Torque nuts to 18.75
Nm. (13.5 ft.lbs).
3.4.4 Align the holes in the battery tube (d) to the holes in front of the battery
tray.
3.4.5 Insert M8 x 35 screws (e) through the battery tray then through the
tube.
3.4.6 Insert the nuts (f) onto the screws and tighten. Torque nuts to 18.75
Nm. (13.5 ft.lbs).
3.4.7 Insert the tube clamps (g) onto the upper frame tube and align the
holes to the holes of the battery tube.
3.4.8 Insert M8 x 35 screws (h) through the battery tube then through the
tube clamps.
3.4.9 Insert the nuts (j) onto the bolts and tighten. Torque nuts to 18.75 Nm.
(13.5 ft.lbs).
3.4.10 Slide the J-bolt (k) through the holes found in the battery holder (l).
3.4.11 Insert the rounded end of the J-bolt (k) into the slot of the battery tray
and insert the tip of the J-bolt through the hole.
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Operation GP/GPS 6600A
3.5 Wheel Kit
The wheel kit (Part No. 0161308) is a standard item on Item Number
0620012, 0620015, 0620043 and 0620046 only. It is available as an
option on all other models.
3.5.1 Hoist the generator, and align the axle (c) with the lower cross-member
of frame.
3.5.2 Insert the axle brackets (k) over the axle and align the holes found in
the axle bracket to the holes of the cross-member. Ensure that the
brackets extend under the tube of the frame.
3.5.3 Insert M6 x 16 screws (l) through the outer holes on the cross-member,
then through the holes of the axle bracket.
3.5.4 Insert M6 nuts (m) onto the screws and tighten. Torque to 7.5 Nm (5.25
ft.lbs.).
3.5.5 Assemble the washers (g) next to the rings (h), then add the wheels
(d).
3.5.6 Add the washers (g) next to the wheels, then insert the pins (f) into the
holes of the axle and separate the legs of the pins.
3.5.7 Align the holes found in the leg bracket (b) to the holes of the lower
cross-member.
3.5.8 Insert M6 x 16 screws (l) through the outer holes on the cross-member,
then through the holes of the leg bracket.
3.5.9 Insert M6 nuts (n) onto the screws and tighten. Torque to 7.5 Nm (5.25
ft.lbs.).
3.5.10 Insert M8 x 30 screw (o) through the hole in the leg bracket and
through the hole in cross-member.
3.5.11 Insert M8 nut (p) onto the screw and tighten. Torque to 18.75 Nm (13.5
ft.lbs.).
3.5.12 Align the holes in the rubber foot mounts (e) to the holes of the leg
bracket.
3.5.13 Insert M6 x 20 screws (m) through the leg bracket, then through the
holes of the rubber foot mounts.
3.5.14 Insert the nuts (n) onto the screws and tighten. Torque to 7.5 Nm (5.25
ft.lbs.).
3.5.15 Align the holes found in the handles (a, j) to the holes of the brackets
(1) on the frame.
3.5.16 Insert M6 x 16 screws (l) through the handles, then through the
brackets on the frame.
3.5.17 Insert nuts (m) onto the screws and tighten. Torque to 7.5 Nm (5.25
ft.lbs.).
22
GP/GPS 6600A Operation
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Operation GP/GPS 6600A
3.6 Generator Derating
All generators are subject to derating for altitude and temperature.
Internal combustion engines, unless modified, run less efficiently at
higher altitudes due to the reduction of air pressure. This translates
into a lack of power and thus reduction in generator output.
Temperature affects both engine and generator performance. As
temperature increases, an engine will run less efficiently and more
resistance will be found in electrical components. Therefore, as the
temperature increases, the output of the generator decreases. Altitude
also affects the cooling capacity of air—the higher the altitude the less
dense the air is and thus the lower its ability to transfer heat.
For every increase in altitude of 500 m (1650 ft.) above 1000 m (3300
ft.), the output of the generator will be reduced by 3%. For every
increase of 5° C (9° F) in ambient temperature above 40° C (104° F),
the output of the generator will be reduced by 3%. Use the tables
shown for altitude and temperature deration factors. It may be
necessary to consider both altitude and ambient temperature deration
factors to determine true generator output.
Ambient Temp.
°C (°F)
45 (113) 3 % 0.97
50 (122) 6 % 0.94
55 (131) 9 % 0.91
60 (140) 12 % 0.88
Altitude
m (ft.)
1500 (4900) 3 % 0.97
2000 (6600) 6 % 0.94
2500 (8200) 9 % 0.91
3000 (9900) 12 % 0.88
3500 (11500) 15 % 0.85
Derate Factor
Derate Factor
4000 (13100) 18 % 0.82
24
GP/GPS 6600A Operation
3.7 Grounding the Generator
A ground connection (a) is located on the generator frame. For proper
operating safety, this ground terminal must be connected to a good
ground source. This ground connection must comply with National
Electrical Code standards, and state and local regulations.
3.8 Operating Heavy Loads
Limit operations requiring the maximum rated output of 6600 W to 20–
30 minutes. For continuous operation do not exceed the continuous
rated output of 6000 W (CAN models = 5500 W).
NOTICE: DO NOT exceed the current limit specified on the control
panel for any receptacle.
wc_gr000544
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Operation GP/GPS 6600A
3.9 Use of Extension Cords
When a long extension cord is used to connect an appliance or tool to
the generator, a voltage loss occurs—the longer the cord, the greater
the voltage loss. This results in less voltage being supplied to the
appliance or tool and increases the amount of current draw or reduces
performance. A heavier cord with a larger wire size will reduce the
voltage loss.
Damaged extension cords can cause electrical shock, resulting in
serious injury or death. DO NOT use worn, bare, or frayed cords.
WARNING
Current Load in Watts Maximum Cable Length in Feet
(Amps) 120V 240V #10 #12 #14 #16
2.5 300 600 1000. 600 375 250
Replace damaged cords immediately.
Use the chart below as a guide for selecting proper cable size.
5 600 1200 500 300 200 125
7.5 900 1800 350 200 125 100
10 1200 2400 250 150 100 15 1800 3600 150 100 65 20 2400 4800 125 75 50 -
Use only extension cords rated for outdoor use and equipped with a
third-wire ground.
NOTICE: Operating equipment at low voltage can cause it to overheat.
26
GP/GPS 6600A Operation
3.10 Control Panel
Ref. Description Ref. Description
a Engine Switch g GFCI test button
b Auto Idle Switch h GFCI reset button
c Twist-lock receptacle - 120V j Twist-lock receptacle - 120/240V
d Main Circuit Breaker k Ignition Switch (GPS only)
e Voltage Selector Switch m 20A circuit breaker (CAN only)
f Duplex receptacle - 120V n 30A circuit breaker (CAN only)
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wc_gr003143
Operation GP/GPS 6600A
3.11 Ground Fault Circuit Interrupter (GFCI)
The GFCI should be tested for proper operations every time the
generator is used.
Normal operating state - sensing device green LED is “ON” and circuit
breaker is at “ON” position.
3.11.1 Press “TEST” button (g). Green LED should go “OUT” and red LED
should come “ON” and circuit breaker should trigger to “OFF” position
(d).
3.11.2 If sensing device LED or breaker does not trip or change state, “DO
NOT USE”. Consult an electrician for assistance.
3.11.3 Press “RESET” button (h). Red LED should turn “OFF” and green LED
should turn “ON”.
3.11.4 Manually reset (switch) circuit breaker to “ON” position to restore
circuit power (d).
wc_gr003143
28
GP/GPS 6600A Operation
3.12 Twist-Lock Receptacles
Twist-lock receptacles (c, j) are used at the 120V Amp and 120/240V
outlets. These receptacles are protected by the GFCI.
To attach a power cord to a twist-lock receptacle, insert plug into
receptacle and turn it clockwise to lock it in place.
3.13 Engine Auto Idle
The auto idle switch (b) automatically reduces engine speed
approximately 7 seconds after all appliances or tools attached to the
generator have been turned off. The engine automatically returns to
full speed when a tool or appliance is turned back on.
To turn the auto idle feature on, push the auto idle switch to “AUTO”.
The AUTO setting is recommended while the generator is running to
minimize fuel consumption. To avoid extended engine warm-up
periods, keep switch set to “OFF” when starting the engine and until
the engine reaches operating temperature.
3.14 Engine Speed
Generators require a fixed engine speed to maintain the correct
voltage. Engine speed is controlled by a governor which automatically
adjusts to varying loads on the engine to maintain a constant speed.
See Technical Data. There is no throttle control. Use the auto idle
switch on the generator to control engine speed.
wc_tx000791gb.fm 29
Operation GP/GPS 6600A
3.15 Voltage Selection
The voltage selector switch (e) allows the generator to operate in either
single (120V) or dual voltage (120/240V) mode.
In single-voltage mode, use only the 120V twist-lock (c) and duplex
receptacles (f1, f2). The full rated power of the generator is shared
between the three receptacles.
In dual voltage mode both the 120V and 120/240V receptacles are
powered; lower watts are available on receptacles (f1, f2, c). The 120/
240V twist-lock receptacle (j) should be used in dual mode only. To
achieve full power in this receptacle it should be used alone.
NOTICE: NEVER switch the voltage selector switch with the main
breaker on! This can cause arcing and can damage the generator.
Turn all tools and appliances off and place main breaker (d) in the OFF
position before changing voltage switch position.
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30
GP/GPS 6600A Operation
3.16 Before Starting
3.16.1 Read and understand the safety and operating labels and instructions
at the beginning of this manual.
3.16.2 Inspect the generator for any signs of damage which may affect
operation or pose a safety hazard.
3.16.3 Check:
• oil level in engine
• fuel level
• condition of air cleaner
• tightness of external fasteners
• condition of fuel lines.
Note: The engine is equipped with an oil alert system. If the oil level in
the engine drops too low, the engine will not start.
3.16.4 Fill the fuel tank with fresh, regular, unleaded grade gasoline. Do not
exceed the fuel tank capacity (see Technical Data).
NOTICE: Fill the tank after placing the machine on level ground.
3.16.5 DO NOT use an oil/gas mixture to fill the tank. The use of gasohol or
any fuel containing more than 10% ethanol is not recommended.
Consult the engine owner's manual for complete fuel specifications.
wc_tx000791gb.fm 31
Operation GP/GPS 6600A
3.17 To Start
Before starting, be sure you read and understand all the safety and
operating instructions in this manual.
3.17.1 Ensure that the generator is properly installed in an outdoor location.
See Sections Installation and Operator Safety while using Internal
Combustion Engines for installation warnings and safety guidelines.
3.17.2 Disconnect all loads from the generator and place the main circuit
breaker switch in the OFF position (a2).
3.17.3 Set the auto idle switch to “OFF” (c).
3.17.4 Open the fuel valve (d1).
Note: If the engine is cold, move the choke lever to the closed position
(e2). If the engine is warm, set the choke lever to the open position
(e1).
3.17.5 On recoil start engines, turn the engine switch to “ON” (b1) and pull the
starter rope (f).
3.17.6 On electric start engines, press the ignition switch (k) and hold until the
engine starts. Release the switch after the engine starts.
NOTICE: DO NOT run the starter motor more than 5 seconds at a time
or damage to the starter motor may occur. If the engine fails to start,
release the switch and wait 10 seconds to let the starter motor cool
before trying again.
Note: If the oil level in the engine is low, the engine will not start. If this
happens, check the oil level and add oil as needed.
3.17.7 As the engine warms up, move the choke lever to the OPEN position
(e1).
3.17.8 Allow the engine to warm up for a few minutes before placing the main
breaker in the "ON" position (a1) and attaching loads.
32
GP/GPS 6600A Operation
wc_gr002500
3.18 To Stop
3.18.1 Turn off and disconnect all tools and appliances attached to the
3.18.2 Place the main circuit breaker in the OFF position (a2).
3.18.3 Turn the engine switch to “OFF” (b2).
3.18.4 Close the fuel valve (d2).
generator.
Note: To stop the engine quickly in an emergency, turn or press the
engine switch to “OFF” (b2).
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Maintenance GP/GPS 6600A
4. Maintenance
4.1 Engine Maintenance
The chart below lists basic machine and engine maintenance. Refer to
your engine operator’s manual for additional information on engine
maintenance.
4.2 Periodic Maintenance Schedule
Check the fuel level.
Check the engine oil level.
Inspect the air filter. Replace as
needed.
Check external hardware.
Clean the air cleaner element.*
Inspect the shockmounts for damage.
Change the engine oil.*
Clean the sediment cup or fuel
strainer.
Check and clean the spark plug.
Check and adjust the valve clearance.
Daily
before
starting
After
first
20 hrs.
Every
50
hrs.
Every
100
hrs.
Every
300
hrs.
Clean the fuel tank.*
Check condition of the fuel lines.
Replace when necessary.
*Service more frequently in dusty conditions.
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GP/GPS 6600A Maintenance
4.3 Engine Oil
4.3.1 Drain the oil while the engine is still warm.
4.3.2 Remove the oil filler plug (a) and the drain plug (b) to drain the oil.
Note: In the interests of environmental protection, place a plastic sheet
and a container under the machine to collect any liquid that drains off.
Dispose of this liquid in accordance with environmental protection
legislation.
4.3.3 Install the drain plug.
4.3.4 Fill the engine crankcase with the recommended oil up to the level of
the plug opening (c). See section Technical Data for oil quantity and
type.
4.3.5 Install the oil filler plug.
35
wc_gr000022
Maintenance GP/GPS 6600A
4.4 Servicing Air Cleaner
Service the air cleaner frequently to prevent carburetor malfunction.
NOTICE: NEVER run the engine without the air cleaner. Severe
engine damage will occur.
NEVER use gasoline or other types of low flash-point solvents for
cleaning the air cleaner. A fire or explosion could result.
WARNING
To service:
4.4.1 Remove the air cleaner cover (a). Inspect the element (b) for holes or
tears. Replace the element if it is damaged.
4.4.2 Wash the foam element (b) in a solution of mild detergent and warm
water. Rinse it thoroughly in clean water. Allow the element to dry
thoroughly. Soak the element in clean engine oil and squeeze out
excess oil.
wc_tx000799gb.fm 36
wc_gr002815
GP/GPS 6600A Maintenance
4.5 Spark Plug
Clean or replace the spark plug as needed to ensure proper operation.
Refer to your engine operator’s manual.
The muffler becomes very hot during operation and remains hot for a
while after stopping the engine. Do not touch the muffler while it is hot.
WARNING
Note: Refer to section “Technical Data” for the recommended spark
plug type and the electrode gap setting.
4.5.1 Remove the spark plug and inspect it.
4.5.2 Replace the spark plug if the insulator is cracked or chipped.
4.5.3 Clean the spark plug electrodes with a wire brush.
4.5.4 Set the electrode gap (a).
4.5.5 Tighten the spark plug securely.
NOTICE: A loose spark plug can become very hot and may cause
engine damage.
37
Maintenance GP/GPS 6600A
4.6 Cleaning the Sediment Cup
4.6.1 Turn the fuel valve off.
4.6.2 Remove the sediment cup (a) and the O-ring (b).
4.6.3 Wash both thoroughly in a nonflammable solvent. Dry and reinstall
them.
4.6.4 Turn the fuel valve on and check for leaks.
b
a
wc_gr000029
wc_tx000799gb.fm 38
GP/GPS 6600A Maintenance
4.7 Carburetor Adjustment
4.7.1 Start the engine and allow it to warm up to operating temperature.
4.7.2 Set the pilot screw (a) two turns out. See Note.
4.7.3 With the engine idling, turn the pilot screw (a) in or out to the setting
that produces the highest rpm.
4.7.4 After the pilot screw is adjusted, turn the throttle stop screw (b) to
obtain the standard idle speed. See Technical Data.
Note: On some engines the pilot screw is fitted with a limiter cap (c)
to prevent excessive enrichment of the air-fuel mixture in order to
comply with emission regulations. The mixture is set at the factory and
no adjustment should be necessary. Do not attempt to remove the
limiter cap. The limiter cap cannot be removed without breaking the
pilot screw.
4.8 Adjusting Engine Speed
Generators require a fixed engine speed to maintain the correct
voltage. Engine speed is controlled by a governor which automatically
adjusts to varying loads on the engine to maintain a constant speed.
There is no throttle control.
To set the engine to the proper speed:
Turn the speed adjusting screw (b) in or out to obtain a no-load speed.
See Technical Data.
NOTICE: Setting the engine speed too high or too low may damage
tools and other appliances attached to the generator.
wc_gr000032
39
Maintenance GP/GPS 6600A
4.9 Storage
Before storing the generator for a long period of time:
4.9.1 Close the fuel valve and remove and empty the sediment cup or fuel
strainer.
4.9.2 Disconnect the fuel line from the carburetor. Place the open end of the
fuel line into a suitable container and open the fuel valve to drain the
fuel from the tank.
Gasoline is extremely flammable. Drain the fuel tank in a wellventilated area. DO NOT drain the fuel tank in an area with flames or
WARNING
4.9.3 Loosen the drain screw on the carburetor and drain any remaining fuel
4.9.4 Change the engine oil.
4.9.5 Remove the spark plug and pour approximately 30 ml (1 ounce) of
sparks.
from the carburetor.
clean engine oil into the cylinder. Crank the engine a few turns to
distribute the oil to the inside of the cylinder walls.
4.9.6 Pull the starter rope slowly until resistance is felt and leave the handle
in this position. This ensures that the intake and exhaust valves are
closed.
4.9.7 Store the generator in a clean, dry area.
4.10 Transport
Let the engine cool before transporting the generator or storing it
indoors, to avoid burns or fire hazards.
WARNING
When transporting the generator:
4.10.1 Turn the engine fuel valve to the OFF position.
4.10.2 Position the generator level to prevent fuel from spilling.
4.10.3 Secure the generator by tying it down with a suitable rope.
When transporting the machine by hand, be sure to employ manpower
commensurate with the weight of the machine. To avoid back injury
WARNING
when lifting the machine, bend the knees to pick it up rather than
bending your back only.
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GP/GPS 6600A Maintenance
4.11 Troubleshooting
Problem / Symptom Reason / Remedy
If engine doesn't start, check
that:
If engine starts but there is no
power at receptacles, check
that:
If engine starts but runs erratically, check that:
If the GFCI trips when a load
is connected, check that:
• Engine switch is on “Start”.
• Fuel valves under fuel tank and on engine are open.
• Fuel tank has fuel.
• Choke lever is in correct position. Choke should be
closed when starting a cold engine.
• All loads are disconnected from generator.
• Spark plug is in good condition.
• Spark plug cap is tight.
• Engine oil level is adequate.
• Circuit breaker is closed.
• Connector from generator to control panel is tight.
• Hose routing from the fuel tank to the engine is correct. For proper operation, the hose must run
through the bushing in the lifting bracket. Refer to the
Parts Book for illustration.
• The connected equipment may be wired incorrectly
or faulty. Contact equipment supplier.
• See section Determining Power Requirements.
41
Maintenance GP/GPS 6600A
4.12 Wire Colors
Wire Colors
B Black R Red Y Yellow Or Orange
G Green T Tan Br Brown Pr Purple
L Blue V Violet Cl Clear Sh Shield
P Pink W White Gr Gray LL Light blue
4.13 Electrical Schematic
Ref. Description Ref. Description
A Generator E Honda Engine
B Control box
C Electric start engines (GPS)
Ref. Description Ref. Description
1 Main stator winding 1 12 Engine ON / OFF switch
2 Main stator winding 2 13 Rectifier
3 Auto idle unit 14 Rotor winding/brushes
4 Main circuit breaker 15 Secondary (excitation) winding
5 Voltage selector switch
16 DC winding
(120/240V position shown)
6 Duplex receptacle—120V 17 Automatic voltage regulator (AVR)
7 Twist-lock receptacle—120V 18 15A fuse (GPS only)
8 Twist-lock receptacle—120/240V 19 Ignition switch (GPS only)
9 Auto idle switch 20 GFCI
10 5A fuse 21 Neutral bond wire
11 Capacitor
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GP/GPS 6600A Maintenance
43
Maintenance GP/GPS 6600A
4.14 Engine Schematic
Ref. Description Ref. Description
A Generator E Honda Engine
B Control box
C Electric start engines (GPS)
Ref. Description Ref. Description
1 Idle solenoid 6 Solenoid (GPS only)
2 Fuel cut solenoid 7 Starter (GPS only)
3 Oil alert module 8 Charging coil (GPS only)
4 Oil level switch 9 Battery (GPS only)
5Coil
wc_tx000799gb.fm 44
GP/GPS 6600A Maintenance
45
Technical Data GP/GPS 6600A
5. Technical Data
5.1 Generator
Item No. GP 6600A
0620330
GP 6600A
0620329
Generator
Maximum Output
Continuous Output
W
W
6600
6000
Type Dual voltage, single phase,
Auto voltage regulator system
AC Voltages Available
Frequency
volts
phase
Hz
120 / 240
1ø
60
Power Factor 1.0
AC receptacles:
125V duplex
125V duplex
125V twist-lock
125V/250V twist-lock
amp
amp
amp
amp
20
20
30
30
GPS 6600A
0620331
Main Circuit Breaker
L x W x H
Weight (dry)
amp
mm
(in.)
Kg (lbs.)
685 x 530 x 537
(27 x 21 x 21.2)
89.8 (198)
2-pole, 27 amp each pole
1003 x 686 x 677
(39.5 x 27 x 26.7)
99.8 (220)
870 x 530 x 537
(34.3 x 21 x 21.2)
96.6 (213)
wc_td000242gb.fm 46
GP/GPS 6600A Technical Data
5.2 Engine
Engine Power Rating
Net power rating per SAE J1349. Actual power output may vary due to
conditions of specific use.
Item No. GP 6600A
0620330
GPS 6600A
0620331
0620329
Engine
Engine type Single cylinder, 4-cycle, air-cooled, gasoline engine
Engine make Honda
Engine model GX 390 K1
Maximum rated
power @ rated
kW (Hp)
8.2 (11) @ 3600 rpm
speed
Spark plug Champion RN10Y
Electrode gap
Operating speed
Autoidle VAC
Air cleaner
mm (in.)
rpm
high idle
low idle
type
0.7 - 0.8 (0.028 - 0.031)
3600
119
90
Dry type with oil-wetted foam pre-cleaner
Battery
Engine lubrication
Engine oil capacity
Fuel
Fuel tank capacity
Fuel consumption
Running time
type
rating
size (in.)
oil grade
l (qts.)
type
l (gal.)
l (qts.)/hr.
hrs.
Y50-N18L-A
N/A
12V - 20 Amp-hour
1
/8 x 3-9/16 x 6-7/
8-
SAE 10W30 service class SF, SE, SD or SC
1.1 (1.2)
Regular unleaded gasoline
18.7 (4.94)
3.9 (4.1)
4.8
47
16
Wacker Neuson SE · Preußenstraße 41 · D-80809 München · Tel.: +49-(0)89-3 54 02-0 · Fax: +49 - (0)89-3 54 02-390
Wacker Neuson Corporation · P.O. Box 9007 · Menomonee Falls, WI 53052-9007 · Tel. : (262) 255-0500 · Fax: (262) 255-0550 · Tel. : (800) 770-0957
Wacker Neuson Limited - Room 1701–03 & 1717–20, 17/F. Tower 1, Grand Century Place, 193 Prince Edward Road West, Mongkok, Kowloon, Hongkong.
Tel: (852) 3605 5360, Fax: (852) 2758 0032
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