Operator’s Manual
Pumps
PG2A
PG3A
500018773103 0121
Copyright
notice
© Copyright 2021 by Wacker Neus
on America Corporation
All rights, including copying and distribution rights, are reserved.
This publication may be photocopied by the original purchaser of the machine. Any other
type of reproduction is prohibited without express written permission from Wacker
Neuson America Corporation.
Any type of reproduction or distribution not authorized by Wacker Neuson America
Corporation represents an infringement of valid copyrights. Violators will be prosecuted.
Trademarks
All trademarks referenced in this manual are the property of their respective owners.
Manufacturer
Wacker Neuson America Corporation
N92W15000 Anthony Avenue
Menomonee Falls, WI 53051 U.S.A.
Tel: (262) 255-0500 · Fax: (262) 255-0550 · Tel: (800) 770-0957
www.wackerneuson.com
Original
instructions
This Operator’s Manual presents the original instructions. The original language of this
Operator’s Manual is American English.
wc_tx000001gb.fm
3
Foreword
This manual provides information and procedures to safely operate and maintain
this Wacker Neuson model. For your own safety and protection from injury, care-
fully read, understand and observe the safety instructions described in this manual.
Machine
documentation
From this point forward in this documentation, Wacker Neuson America
Corporation will be referred to as Wacker Neuson.
Keep a copy of the Operator’s Manual with the machine at all times.
For spare parts information, please see your Wacker Neuson Dealer, or visit
the Wacker Neuson website at http://www.wackerneuson.com/.
When ordering parts or requesting service information, be prepared to provide
the machine model number, item number, revision number, and serial number.
Expectations
for
information in
this manual
This manual provides information and procedures to safely operate and
maintain the above Wacker Neuson model(s). For your own safety and to
reduce the risk of injury, carefully read, understand, and observe all instructions
described in this manual
.
Wacker Neuson expressly reserves the right to make technical modifications,
even without notice, which improve the performance or safety standards of its
machines.
The information contained in this manual is based on machines manufactured
up until the time of publication. Wacker Neuson reserves the right to change
any portion of this information without notice.
The illustrations, parts, and procedures in this manual refer to Wacker Neuson
factory-installed components. Your machine may vary depending on the
requirements of your specific region.
CALIFORNIA
Proposition
65 Warning
Combustion 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.
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 dis-
charge 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.
wc_tx000001gb.fm
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Manufacturer’s
approval
This manual contains references to approved parts, attachments, and modifica-
tions. The following definitions apply:
Approved parts or attachments are those either manufactured or provided by
W
acker Neuson.
Approved modifications are those performed by an authorized Wacker
Neuson ser
vice center according to written instructions published by Wacker
Neuson.
Unapproved parts, attachments, and modifications are those that do not
meet the approved criteria.
Unapproved parts, attachments, or modifications may have the following conse-
quences:
Serious injury hazards to the operator and persons in the work area
Permanent damage to the machine which will not be covered under warranty
Contact your Wacker Neuson dealer immediately if you have questions about
approved or unapproved parts, attachments, or modifications.
wc_bo5000187731_03TOC.fm
5
PG 2A/3A Table of Contents
Table of Contents
1 Safety Information 7
1.1 Laws Pertaining to Spark Arresters............................................................. 7
1.2 Operating Safety ......................................................................................... 8
1.3 Operator Safety while using Internal Combustion Engines......................... 9
1.4 Service Safety........................................................................................... 10
1.5 Label Locations......................................................................................... 11
1.6 Safety Labels............................................................................................. 12
2 Operation 14
2.1 Application................................................................................................. 14
2.2 Recommended Fuel.................................................................................. 14
2.3 Before Starting .......................................................................................... 15
2.4 To Start...................................................................................................... 16
2.5 To Stop...................................................................................................... 16
2.6 Operation................................................................................................... 17
2.7 Hoses and Clamps.................................................................................... 17
2.8 Hoses and Clamps.................................................................................... 17
3 Maintenance 18
3.1 Periodic Maintenance Schedule................................................................ 18
3.2 Cleaning Pump.......................................................................................... 19
3.3 Adjusting Impeller Clearance .................................................................... 20
3.4 Mechanical Seal Replacement.................................................................. 21
3.5 Spark Plug................................................................................................. 21
3.6 Air Cleaner ................................................................................................ 22
3.7 Engine Oil.................................................................................................. 23
3.8 Engine Oil.................................................................................................. 23
3.9 Cleaning Sediment Cup ............................................................................ 23
3.10Cleaning the Sediment Cup (Honda) ........................................................ 23
3.11Carburetor Adjustment.............................................................................. 24
3.12Adjusting the Carburetor ........................................................................... 24
3.13Adjusting Idle Speed ................................................................................. 24
3.14Long-Term Storage................................................................................... 25
3.15Troubleshooting......................................................................................... 26
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6
Table of Contents PG 2A/3A
4 Technical Data 27
4.1 Engine Data ...............................................................................................27
4.2 Pump Data.................................................................................................28
4.3 Sound Specifications..................................................................................28
PG 2A/3A Safety Information
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1 Safety Information
This manual contains DANGER, WARNING, CAUTION, NOTICE, and
NOTE signal words 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.
WARNING indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION indicates a hazardous situation which, if not avoided, could
result in minor or moderate injury.
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.
1.1 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.
DANGER
WARNING
CAUTION
Safety Information PG 2A/3A
wc_si000163gb.fm
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1.2 Operating Safety
1.2.1 Do not allow anyone to operate this equipment without proper training.
People operating this equipment must be familiar with the risks and
hazards associated with it.
1.2.2 Do not touch the engine or muffler while the engine is on or
immediately after it has been turned off. These areas get hot and may
cause burns.
1.2.3 Do not use accessories or attachments that are not recommended by
Wacker Neuson. Damage to equipment and injury to the user may
result.
1.2.4 Do not pump volatile, flammable, or low flash point fluids. These fluids
could ignite or explode.
1.2.5 Do not pump corrosive chemicals or water containing toxic
substances. These fluids could create serious health and
environmental hazards. Contact local authorities for assistance.
1.2.6 Do not open the priming plug when the pump is hot. Do not loosen or
remove inlet or discharge hose fittings when the pump is hot. Hot water
inside could be pressurized much like the radiator on an automobile.
Allow the pump to cool to the touch before loosening the plug and
before loosening or removing the inlet or discharge hose fittings.
1.2.7 Do not open pump housing cover while pump is operating, or start
pump with the cover off. The rotating impeller inside the pump can cut
or sever objects caught in it.
1.2.8 Do not block or restrict flow from inlet line or discharge line. Remove
kinks from discharge line before starting pump. Operation with a
blocked inlet line or discharge line can cause water inside pump to
overheat.
1.2.9 Never stand on the machine.
1.2.10 Do not stand under the machine while it is being hoisted or moved.
1.2.11 Do not attach equipment to the machine when it is suspended.
1.2.12 Read, understand, and follow procedures in the Operator’s Manual
before attempting to operate the machine.
1.2.13 Be sure operator is familiar with proper safety precautions and
operation techniques before using machine.
WARNING 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 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.
PG 2A/3A Safety Information
wc_si000163gb.fm
9
1.2.14 Be sure the machine is on a firm, level surface and will not tip, roll,
slide, or fall while operating.
1.2.15 Close fuel valve on engines equipped with one when machine is not
being operated.
1.2.16 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.
1.3 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
warnings and safety standards could result in severe injury or death.
1.3.1 NEVER use this pump inside a home or garage, EVEN IF doors and
windows are open. Only use OUTSIDE and far away from windows,
doors, and vents. Using a pump indoors CAN KILL YOU IN MINUTES.
Pump exhaust contains carbon monoxide. This is a poison you cannot
see or smell.
1.3.2 NEVER use a pump inside an enclosed area such as a tunnel or a
deep trench unless adequate ventilation is provided through such
items as exhaust fans or hoses.
1.3.3 Do not smoke while operating the machine.
1.3.4 Do not smoke when refueling the engine.
1.3.5 Do not refuel a hot or running engine.
1.3.6 Do not refuel the engine near an open flame.
1.3.7 Do not spill fuel when refueling the engine.
1.3.8 Do not run the engine near open flames.
1.3.9 Refill the fuel tank in a well-ventilated area.
1.3.10 Replace the fuel tank cap after refueling.
WARNING
Safety Information PG 2A/3A
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1.4 Service Safety
• Do not attempt to clean or service the machine while it is running.
Rotating parts can cause severe injury.
• Do not crank a flooded engine with the spark plug removed on
gasoline-powered engines. Fuel trapped in the cylinder will squirt
out the spark plug opening.
• Do not test for spark on gasoline-powered engines if the engine is
flooded or the smell of gasoline is present. A stray spark could
ignite the fumes.
• Do not use gasoline or other types of fuels or flammable solvents
to clean parts, especially in enclosed areas. Fumes from fuels
and solvents can become explosive.
• Keep the area around the muffler free of debris such as leaves,
paper, cartons, etc. A hot muffler could ignite the debris and start
a fire.
• Replace worn or damaged components with spare parts
designed and approved by Wacker Neuson.
• Disconnect the spark plug on machines equipped with gasoline
engines, before servicing, to avoid accidental start-up.
WARNING A poorly maintained machine can become a safety hazard! In order for
the machine to operate safely and properly over a long period of time, periodic
maintenance and occasional repairs are necessary.
PG 2A/3A Safety Information
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1.5 Label Locations
wc_gr000833
A
C
D
E
G
F
B
Safety Information PG 2A/3A
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1.6 Safety Labels
Wacker Neuson machines use international pictorial labels where
needed. These labels are described below.
Label Meaning
A
Engines emit carbon monoxide; operate only in
well-ventilated area. Read the operator’s Manual.
No sparks, flames, or burning objects near the
machine. Shut off the engine before refueling.
B
WARNING
Hot surface
C
CAUTION
Read and understand the supplied Operator’s Manual
before operating this machine. Failure to do so
increases the risk of injury to yourself and others.
D
WARNING
Pressurized contents. Do not open when hot!
E
Impeller rotation.
F
Guaranteed sound power level in db(A)
wc_gr014566
wc_gr014563
wc_gr014565
wc_gr014564
PG 2A/3A Safety Information
wc_si000163gb.fm
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G
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 name-
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.
Label Meaning
wc_tx000511gb.fm
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Operation PG 2A/3A
2Operation
2.1 Application
This pump is intended for removing clean water and water containing some debris
and solids. Refer to “Technical Data” for maximum solid size.
2.2 Recommended Fuel
The engine requires regular grade unleaded gasoline. Use only fresh, clean
gasoline. Gasoline containing water or dirt will damage the fuel system. Consult the
engine owner’s manual for complete fuel specifications.
wc_tx000511gb.fm
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PG 2A/3A Operation
2.3 Before Starting
See Graphic: wc_gr000835
1. Read safety instructions at the beginning of this Operator’s Manual.
2. Place pump as near to water as possible, on a firm, flat, level surface.
3. To prime pump, remove prime plug (a) and fill pump housing with water. If the
pump housing is not filled with water before starting, it will not begin pumping.
WARNING Do not open priming plug, discharge plug, or loosen hose fittings if
pump is hot! Water or vapor inside pump may be under pressure.
4. Check for leaks between pump and engine. If water is leaking, the seal inside
pump is worn or damaged. Continued operation may cause water damage to
engine.
5. Check that hoses are securely attached to pump. Suction hose (b) must not
have any air leaks. Tighten hose clamps (c) and couplings (d). Check that
discharge hose (e) is not restricted. Lay hose out as straight as possible.
Remove any twists or sharp bends from hose which may block the flow of water.
6. Make sure suction strainer (f) is clean and securely attached to end of hose.
The strainer is designed to protect the pump by preventing large objects from
being pulled into the pump.
NOTICE: Strainer should be positioned so it will remain completely under water.
Running the pump with the strainer above water for long periods can damage the
pump.
7. Check fuel level, engine oil level, and condition of air cleaner.
WARNING
e
a
d
c
b
c
f
wc_gr000835
wc_tx000511gb.fm
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Operation PG 2A/3A
2.4 To Start
See Graphic: wc_gr000014
1. Open fuel valve by moving lever to the right (a1).
Note: If engine is cold, move choke lever to close position (b1). If engine is hot, set
choke to open position (b2).
2. Turn engine switch to “ON” (e1).
3. Open throttle by moving it slightly to left (d1).
4. Pull starter rope (c).
Note: If the oil level in the engine is low, the engine will not start. If this happens,
add oil to engine. Some engines are equipped with an oil alert light (f) that will
come on while pulling the starter rope.
5. Open choke as engine warms (b2).
6. Open throttle fully to operate.
2.5 To Stop
See Graphic: wc_gr000014
1. Reduce engine RPM to idle by moving throttle completely to right (d2).
2. Turn engine switch to “OFF” (e2).
3. Close fuel valve by moving lever to the left (a2).
wc_tx000511gb.fm
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PG 2A/3A Operation
2.6 Operation
Pump should begin pumping water within a minute depending on length of suction
hose and height of pump above water. Longer hoses will require more time.
WARNINGIf pump does not prime, check for loose fittings or air leak in suction
hose. Make sure strainer in water is not blocked.
Run engine at full speed while operating pump.
Do not pump corrosive chemicals or water containing toxic substances. These
fluids could create serious health and environmental hazards. Contact local
authorities for assistance.
2.7 Hoses and Clamps
See Graphic: wc_gr000836
2.8 Hoses and Clamps
Suction hoses (a) must be rigid enough not to collapse when pump is operating.
Discharge hoses (b) are usually thin-walled collapsible hoses. Rigid hoses similar
to those used as suction hoses may also be used as discharge hoses.
Note: Suction and discharge hoses are available from Wacker Neuson. Contact
your nearest dealer for more information.
Two clamps (c) are recommended for connection of suction hoses to inlet coupling.
Note: This connection is important. Even a small air leak on the suction side of
pump will prevent the pump from priming.
For other hose connections, one T-bolt or worm-gear-type clamp is usually
sufficient to hold hoses in place. In some cases, slight variances in hose diameters
may make it necessary to add more clamps in order to maintain tight connections.
WARNING
w c _ g r 0 0 0 8 3 6
>
?
=
wc_tx000512gb.fm
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Maintenance PG 2A/3A
3 Maintenance
3.1 Periodic Maintenance Schedule
Daily
before
starting
After
first
20 hrs.
Every
50
hrs.
Every
100
hrs.
Every
300
hrs.
Check fuel level.
Check engine oil level.
Inspect air cleaner element.
Replace as needed.
Check external hardware.
Inspect hoses and housing for leaks.
Clean air cleaner element.
Change engine oil.
Clean cooling system.
Check and clean spark plug.
Clean sediment cup.
Check and adjust valve clearance.
Check and adjust impeller clearance.
wc_tx000512gb.fm
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PG 2A/3A Maintenance
3.2 Cleaning Pump
See Graphic: wc_gr000837
After pumping water containing a large amount of dirt or debris, clean out inside of
pump housing.
1. Remove drain plug (b) from pump housing and drain any water left in pump.
2. Loosen the four knobs holding the pump cover (a) and remove cover.
3. Clean out dirt and debris. Inspect impeller and volute insert for wear.
The impeller may develop sharp edges. Use care when cleaning around impeller to
avoid getting cut.
WARNING
w c _ g r 0 0 0 8 3 7
=
>
wc_tx000512gb.fm
20
Maintenance PG 2A/3A
3.3 Adjusting Impeller Clearance
See Graphic: wc_gr000838
If it is necessary to replace impeller or volute, be sure clearance between impeller
and volute is adjusted correctly. The impeller (a) should be as close to the volute
(b) as possible without rubbing against it. Clearance is adjusted by adding or
removing shims (c) from behind impeller. To adjust the clearance do the following:
1. Remove pump housing but do not remove impeller.
2. Measure the distance (d) of volute.
3. Measure the distance (e) of impeller.
4. Subtract the distance (e) from (d).
5. (d) - (e) = (f) clearance.
6. The clearance between the volute and the impeller should be 0.3 mm (0.012 in.)
to 0.7 mm (0.028 in.). Adjust the distance by removing the impeller and adding
shims as needed.
Each shim measures 0.3 mm (0.012 in.).
As the impeller wears down, additional shims may be required to maintain the
clearance between the impeller and the volute. Check the clearance whenever the
mechanical seal (g), impeller, volute, or rear flange plate are replaced.
b
d
e
g
c
a
f
wc_gr000838
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