G8 Portable Fuel Transfer Pump
Owner’s Manual
GENERAL INFORMATION
This pump is designed
for use only with gasoline
(up to 15% alcohol blends
such as E15), diesel fuel
(up to 20% biodiesel
blends such as B20) and
kerosene. Do not use
this pump for dispensing
any uids other than
those for which it was
designed. To do so may damage
pump components and will void the
warranty.
This pump is designed to operate
on a typical 12-volt DC automotive
electrical system. The pump is
designed to operate with 12-volts DC
at the motor leads and the ratings
are determined at this voltage.
Performance may vary due to length
of power cord, battery condition or
output from vehicle charging system
that will affect system voltage.
The rated duty cycle of this pump
is 15 minutes ON and 30 minutes
OFF. Allow the pump to cool for 30
minutes.
Do not leave the system running
without uids. “Dry running” can
damage the pump. If the system fails
to deliver fuel after 15 to 20 seconds,
turn the system off and refer to the
Troubleshooting Section.
NOTE: This pump is not intended for
use with an automatic nozzle.
WARNING: This product shall not be
used for pumping fuel or other liquids
into aircraft.
NOTE: An automatic bypass valve
prevents pressure build up when the
pump is on with the nozzle closed. To
avoid motor damage, do not run the
pump more than 5 minutes with the
nozzle closed.
Do not pump the tank completely
dry, as contaminants from the bottom
of the tank may enter the pump.
IMPORTANT! DO NOT RETURN
THIS PRODUCT TO THE STORE.
Please contact Great Plains
Industries, Inc. before returning
any product. If you are missing
parts, or experience problems
with your installation, contact our
Customer Support Department.
We will be happy to assist you. Call
800-835-0113 or 316-686-7361 or
email: gpisales@gplains.com.
922130-01 Rev-04/2017
SAFETY INFORMATION
Observe all safety precautions
concerning safe handling of
petroleum fuels.
If using solvent to clean pump
components or tank, observe
the solvent manufacturer’s
recommendations for safe use and
disposal.
For your safety, please take a
moment to review the warnings
throughout this manual.
To prevent physical injury, observe
precautions against re or explosion
when dispensing fuel. Do not operate
the system in the presence of any
source of ignition including running
or hot engines, lighted cigarettes, or
gas or electric heaters.
Observe precautions against
electrical shock when operating
the system. Serious or fatal shock
can result from operating electrical
equipment in damp or wet locations.
Inspect external pump wiring
regularly to make sure it is in good
condition. To avoid electrical shock,
use extra care when connecting the
pump to power.
Avoid prolonged skin contact with
petroleum fuels. Use protective
goggles, gloves, and aprons in
case of splashing or spills. Change
saturated clothing and wash skin
promptly with soap and water.
Observe precautions against
electrical shock when servicing the
pump. Always disconnect power
before repairing or servicing.
Never apply electrical power to the
system when any of the coverplates
are removed.
2
INSTALLATION & OPERATION
Pump Installation
Make sure all threaded fuel
connections are wrapped with three
to four turns of the supplied thread
tape.
Make sure supply tank or container
is vented. A vent cap rated at 3 psi or
less is recommended.
NOTE: These components have
not been evaluated as part of the
UL Listed Equipment and are not
intended for use in a Hazardous
(Classied) Location.
Install Inlet Hose and Strainer
Wrap the threads of one end of the
inlet hose 3 or 4 times with thread
tape (supplied). Install hose end into
inlet side of pump (see Figure 1) and
tighten. Wrap threads on other end
of hose 3 or 4 times with thread tape
(supplied). Install metal strainer and
tighten. To avoid damage to pump
from dirt and debris, do not operate
pump without strainer.
Install Outlet Hose and Nozzle
Wrap the threads of one end of the
outlet hose 3 or 4 times with thread
tape (supplied). Install hose into
outlet side of pump (see Figure 1)
and tighten. Wrap threads on other
end of hose 3 or 4 times with thread
tape (supplied). Install manual nozzle
and tighten. To minimize static
electricity build up and possible
explosion, use only static wire
conductive hose when pumping
MANUAL NOZZLE
OUTLET SIDE
INLET SIDE
Figure 1
GROUND WIRE
ammable uids. Keep the ll
nozzle in constant contact with the
container being lled during the lling
process. Sparks or static discharge
will cause explosions.
Install Ground Wire
An external ground wire is provided
for use where required. GPI strongly
recommends grounding your pump
prior to use. To attach the ground
wire, remove one of the 1/4-20 x
1/2” hex head screws and install the
ground wire ring terminal (see Figure
2). Reinstall hex head screw and
tighten securely. Attach the alligator
clamp end of the ground wire to the
earth or chassis ground of the vehicle
your are lling.
STRAINER
Connect to Power Source
NOTE: This pump is designed to
operate on a typical 12-volt DC
automotive electrical system.
DO NOT attempt to connect to a 24volt or 115-volt electrical system.
WARNING: Carefully route the power
cord to the battery, protecting the
power cord from hot surfaces, sharp
edges or anything that could damage
the power cord, resulting in a short
circuit.
A 20-amp inline fuse is supplied on
the power cord’s red wire to protect
the motor and power cord. Connect
the red wire with red clamp to the
positive (ungrounded) side of the
power source. Connect black wire
with black clamp to the negative
(grounded) side of the power source.
Figure 2
NOTE: Power cord components,
such as the switch and fuse, have
not been evaluated as part of the
U. L. Listed equipment.
3
SWITCH
Figure 3
FUSE & HOLDER
NOTE: This pump is pre-wired for
installation in CLASS I, DIVISION 2
locations such as portable fuel tanks,
trailers, etc. Connection to a battery
will depend upon the application.
WARNING: This pump is not
intended for use in CLASS I,
DIVISION I locations.
Dispense Fuel
First, insert the nozzle into the
receiving tank, and then turn on the
pump with the inline switch (see
Figure 3). Squeeze the nozzle handle
to start fuel ow. When done, release
the nozzle handle and turn the pump
off at the switch. Always insert nozzle
into tank before turning pump on.
This pump is designed to be selfpriming. If fuel is not delivered within
15 to 20 seconds, turn the pump
off and refer to the Troubleshooting
Section of this manual.
After running the pump for a
maximum of 15 minutes, allow it to
cool for 30 minutes.
When nished refueling, make sure
the pump is turned off at the switch
and disconnect the power cord from
the 12-volt power source.
MAINTENANCE
This pump is designed for minimum
maintenance. Motor bearings are
sealed and require no lubrication.
Inspect the pump and components
regularly for fuel leaks and make sure
the hose and power cord are in good
condition. Keep the pump exterior
clean to help identify leaks.
Do not use this pump for water,
chemicals or herbicides. Dispensing
any uid other than that listed in this
manual will damage the pump. Use
of the pump with unauthorized uids
will void the warranty.
An automatic bypass valve prevents
pressure build up when the pump is
on with the nozzle closed. To avoid
pump damage, do not run the pump
more than 5 minutes with the nozzle
closed.
4
A kit containing O-rings, motor
shaft seal and gears is available for
this pump. To order replacement
kit, contact GPI and ask for part
number #147500-01 Gears and Seals
Overhaul Kit.
Inspect and Service Bypass
Poppet
To clean and service the Bypass
Poppet (see Figure 4):
• Remove the bypass plug with
O-ring, Spring, and poppet with
O-ring.
• Wipe parts and poppet cavity
with a clean cloth.
• When inspecting O-rings, look
for breaks, wear, and signs of
deterioration, such as swelling.
• Replace O-rings as necessary.
• Before seating, coat O-rings with
light grease.
• Make sure O-rings are well seated
and reinstall bypass poppet
assembly.
• Before installing the plug, unwrap
thread 3 or 4 times with thread
tape. Torque plug to 90 - 100
in•lbs.
Figure 4
PLUG
PLUG
O-RINGS
POPPET O-RING
POPPET
SPRING
Inspect and Service Gears
To clean and service gears
(See Figure 5):
• Remove the (4) 1/4-20 socket
head screws, (2) hex nuts, handle
and gear coverplate.
• Remove coverplate O-ring and
inspect for wear or damage.
Replace as needed.
• Before seating, coat O-rings with
light grease.
• Remove the gears and inspect for
wear or damage. Replace gears
as needed, making sure they turn
freely.
• Reinstall, coverplate, handle nuts
and hex screws (longer screws
are on top. Torque hex screws to
75 -85 in•lbs.
Inspect and Replace Motorshaft
Seal
To inspect and replace shaft seal
(See Figure 5):
• Remove the (4) 1/4-20 socket
head screws, (2) hex nuts, handle
and gear coverplate.
• Remove the pump housing. The
motorshaft seal is located on the
backside of the pump housing.
• Carefully remove shaft seal,
(noting orientation) and inspect
for wear or damage. Replace as
needed, making sure seal is well
seated in recess.
• Reinstall all parts. Torque hex
screws to 75 -85 in•lbs.
COVERPLATE
O-RINGS
Figure 5
MOTORSHAFT SEAL
GEARS
5
TROUBLESHOOTING
MOTOR DOES NOT RUN
PROBABLE CAUSE SOLUTION
Inpect for defective wiring or
Electrical connection is faulty
Fuse is blown
Motor is burned out Inspect and replace as necessary
MOTOR RUNS BUT DOES NOT PUMP FLUID
PROBABLE CAUSE SOLUTION
Fuel level is low Fill tank
System air leak
LOW FLOWRATE
PROBABLE CAUSE SOLUTION
improper electrical connections.
Repair as needed
Inspect fuse in fuse holder. If blown,
replace
Tighten all pump ttings and
connections. Inspect hoses for leaks
or damage. Replace as needed
Strainer is clogged Clean strainer
Tighten all pump ttings and
System air leak
Fuel tank is empty Fill tank
Poor connections or low voltage
For further assistance, visit gpi.net/solutions-center or call 1-800-835-0113.
6
connections. Inspect hoses for leaks
or damage. Replace as needed
Make sure electrical connections are
secure. Also, check battery voltage
SPECIFICATIONS
APPLICATIONS
The G8 Fuel Transfer Pump is
designed to safely transfer low
viscosity petroleum fuels such as
gasoline (up to 15% alcohol blends
such as E15), diesel fuel (up to 20%
biodiesel blends such as B20) and
kerosene.
PUMP HOUSING
Corrosion-resistant aluminum
PERFORMANCE
Pump Rate:
Duty Cycle:
Up to 8 GPM
(30 LPM)
15 min. ON,
30 min. OFF
Suction Lift: Up to 5.5 ft. (1.7 m)
OPERATING TEMPERATURE
-20°F to +125°F (-29°C to +52°C)
OPERATING PRESSURE
10 PSI / 0.69 bar
ELECTRICAL
Input: 12-volt DC
Current Draw: 15 amp
1100 RPM,
Motor:
1/10 HP,
Listed to UL and
Canadian Standards
MECHANICAL CONNECTIONS
Inlet: 3/4” NPT
Outlet: 3/4” NPT
SHIPPING WEIGHT
15.4 lbs / (6.9 kg)
PARTS & SERVICE
In order to preserve the UL Listing for
the motor, do not attempt to service
the motor. For products serviced
outside the factory, the UL nameplate
must be defaced to indicate that
the equipment may no longer meet
the requirements for UL Listing. This
does not apply to products serviced
outside the factory under the UL
program for Rebuilt Motors for Use in
Hazardous Locations.
For warranty consideration, parts,
or other service information, please
contact your local distributor. If you
need further assistance, contact the
GPI Customer Service Department
in Wichita, Kansas, during normal
business hours.
A toll free number is provided for
your convenience.
1-800-835-0113
To obtain prompt, efcient service,
always be prepared with the
following information:
• The model number of your pump.
• The serial number or
manufacturing date code of your
pump.
• Part descriptions and numbers.
For warranty work, always be
prepared with your original sales slip
or other evidence of purchase date.
Please contact GPI before returning
any parts. It may be possible to
diagnose the trouble and identify
needed parts in a telephone call.
GPI can also inform you of any
special requirements you will need
to follow for shipping fuel dispensing
equipment.
CAUTION: Do not return the
pump or parts without prior
approval from the GPI Customer
Service Department. Due to strict
government regulations, GPI cannot
accept parts unless they have been
drained and cleaned.
7
LIMITED WARRANTY
Great Plains Industries, Inc. 5252 E. 36th Street North, Wichita, KS USA 67220-3205, hereby
provides a limited warranty against defects in material and workmanship on all products
manufactured by Great Plains Industries, Inc. This product includes a 2 year warranty from
date of purchase as evidenced by the original sales receipt. A 30 month warranty from
product date of manufacture will apply in cases where the original sales receipt is not available. Reference product labeling for the warranty expiration date based on 30 months from
date of manufacture. Manufacturer’s sole obligation under the foregoing warranties will be
limited to either, at Manufacturer’s option, replacing or repairing defective Goods (subject to
limitations hereinafter provided) or refunding the purchase price for such Goods theretofore
paid by the Buyer, and Buyer’s exclusive remedy for breach of any such warranties will be
enforcement of such obligations of Manufacturer. The warranty shall extend to the purchaser
of this product and to any person to whom such product is transferred during the warranty
A. the product has been altered or modied outside
the warrantor’s duly appointed representative;
B. the product has been subjected to neglect, misuse, abuse or damage or has been installed or operated other than in accordance with the manufacturer’s operating instructions.
period. This warranty shall not apply if:
To make a claim against this warranty, contact the GPI Customer Service Department at
316-686-7361 or 800-835-0113. Or by mail at:
Great Plains Industries, Inc.
5252 E. 36
th
St. North
Wichita, KS, USA 67220-3205
The company will step you through a product troubleshooting process to
determine appropriate corrective actions.
GREAT PLAINS INDUSTRIES, INC., EXCLUDES LIABILITY UNDER THIS WARRANTY FOR
DIRECT, INDIRECT, INCIDENTAL AND CONSEQUENTIAL DAMAGES INCURRED IN THE
USE OR LOSS OF USE OF THE PRODUCT WARRANTED HEREUNDER.
The company herewith expressly disclaims any warranty of merchantability or tness for any
particular purpose other than for which it was designed.
This warranty gives you specic rights and you may also have
other rights which vary from U.S. state to U.S. state.
Note: In compliance with MAGNUSON MOSS CONSUMER WARRANTY ACT – Part 702
(governs the resale availability of the warranty terms).
© 2017 Great Plains Industries, Inc., All Rights Reserved.
Great Plains Industries, Inc. / 800-835-0113 / GPI.net
922130-01 Rev- 04/2017
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