®
Fuel transFer pump 12vdc
98135
set up and Operating instructiOns
®
distributed exclusively by Harbor Freight tools .
3491 Mission Oaks Blvd., Camarillo, CA 93011
read this material before using this product.
Failure to do so can result in serious injury.
save tHis manual.
©
®
Copyright 2008 by Harbor Freight Tools . All rights reserved. No portion of this manual or any
artwork contained herein may be reproduced in any shape or form without the express written
consent of Harbor Freight Tools. Diagrams within this manual may not be drawn proportionally. Due
to continuing improvements, actual product may differ slightly from the product described herein.
For technical questions or replacement parts, please call 1-800-444-3353.
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5. Use safety equipment. Wear ANSI-
approved safety goggles, a dust
sparks that could lead to fire or explo-
sion.
mask/respirator (for fumes), and non-
skid safety shoes during installation.
9. Place empty containers on flat level
ground before filling.
general/Operation safety
10. Use this Fuel Transfer Pump out-
doors only.
1. dO nOt smOKe while using this
Fuel Transfer Pump. dO nOt use
this pump near pilot lights, open
flame, or sparks.
11. DO NOT pump from or into a vehicle
that is running. Turn off engine of
fueled vehicle (and fueling vehicle)
before hooking up nozzle or starting
to pump.
2. Keep multiple class ABC fire extin-
guishers nearby.
12. Follow all local and state laws gov-
erning use of Fuel Pumps.
3. Before use, make sure to ground
the nozzle (54) to the neck of the
tank/container being filled with fuel
at all times. this will help prevent
buildup of static electricity which
can spark causing fire, and/or ex-
plosion and serious bodily injury
or death.
13. This Fuel Transfer Pump should only
be used for one fluid. This will ensure
that different fluids will not contami-
nate one another and help to prevent
unexpected reactions.
14. WARNING: This product contains
or, when used, produces a chemi-
cal known to the State of California
to cause cancer and birth defects or
other reproductive harm.
4. Keep children and bystanders away
while installing, operating, or main-
taining this Fuel Transfer Pump.
5. Stay alert, watch what you are doing
and use common sense when operat-
ing. Do not use while you are tired or
under the influence of drugs, alcohol
or medication. A moment of inat-
tention while operating may result in
serious personal injury.
(California Health & Safety Code §
25249.5, et seq.)
15. WARNING: The brass components
of this product contain lead, a chemi-
cal known to the State of California
to cause birth defects (or other repro-
ductive harm).
6. Do not leave this Fuel Transfer Pump
unattended while it is operating. Do
not lock the Fuel Nozzle in open posi-
tion.
(California Health & Safety Code §
25249.5, et seq.)
16. The warnings, precautions, and in-
structions discussed in this instruction
manual cannot cover all possible con-
ditions and situations that may occur.
It must be understood by the operator
that common sense and caution are
factors which cannot be built into this
7. This Fuel Transfer Pump is not a toy.
DO NOT allow children to operate it.
8. Do not wear clothing made from
synthetic fibers. There is danger
from static electricity build up causing
SKU 98135
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product, but must be supplied by the
operator.
maintenance safety
1. Have your equipment serviced by
a qualified repair person using
only identical replacement parts.
This will ensure that the safety of the
equipment is maintained.
2. Maintain labels and nameplates on
the pump. These carry important
safety information. If unreadable or
missing, contact Harbor Freight Tools
for a replacement.
save tHese
instructiOns.
speciFicatiOns
Permanent Magnetic
Motor pumps diesel,
Application
Flow
Kerosene, Light weight
oils, water and anti-
freeze*
Up to 10 Gallons Per
Minute
Duty Cycle
Continuous
Voltage Required
12 VDC, 23.5 A
* Not for use with fluids that have a flashpoint
below 100° F/38° C
unpacKing
When unpacking, check to make sure
that the item is intact and undamaged. If
any parts are missing or broken, please
call Harbor Freight Tools at the number
shown on the cover of this manual as soon
as possible.
REV 08h
Page 4
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barrel, or drum. When installed, at-
tach parts as in steps two and three.
initial set up
instructiOns
5. Wrench tighten all connections.
read the entire impOrtant
saFetY inFOrmatiOn section
at the beginning of this manual
including all text under
subheadings therein before set
up or use of this product.
Functions
1. this Fuel transfer pump is com-
patible and may be used with the
following fluids: Diesel, Kerosene,
light weight oils, water and anti-
freeze. this pump is nOt compat-
ible with, and should never be
used to pump: Acetone, Gasoline,
Ammonia, Lacquer Thinner, Ben-
zene, Bleach, Hydrochloric Acid, Ink
or Toluene. NOTE: No other fluids
should be used, but the “incom-
patible” fluids listed above can be
especially dangerous. not for use
with fluids that have a flashpoint
below 100°F/38°c.
tO prevent
seriOus injurY
FrOm accidental
OperatiOn:
turn the power switch of the
pump to its “OFF” position
and disconnect from power
source before assembling or
making any adjustments to
the pump.
note: For additional information regarding
the parts listed in the following pages,
refer to the Assembly Diagram near
the end of this manual.
2. Once used with a specific type of
fluid, continue to use ONLY that fluid
with this Pump (except for diesel
flushing for storage). Using another
fluid may lead to contamination or
reaction between the fluids.
assembly
note: use a gasoline- and oil-proof
pipe compound (not supplied) on
all joints.
general installation and
connection instructions
1. Thread male end of Steel Elbow (39)
into the Pump Housing (1). Tighten
securely at this point.
1. Keep work area clean and well lit.
Cluttered or dark areas invite acci-
dents.
2. Thread end of Hose (55) into female
end of Steel Elbow (39). DO NOT
tighten securely.
2. use safety equipment. always
wear ansi-approved safety gog-
gles. Safety equipment such as
dust mask/respirator (for fumes),
and non-skid safety shoes.
3. Thread Nozzle (54) to Hose (55). DO
NOT tighten securely.
4. After making sure connections will
fit, remove parts attached in step two
and three until after Fuel Transfer
Pump has been installed on tank,
3. This Fuel Transfer Pump has a built-
in Check Valve Assembly (27) with
pressure relief to prevent fluid ther-
mal expansion from causing unsafe
REV 08h
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system pressure. dO nOt install
additional check valves or foot
valves during installation without
proper relief valves built into them.
make sure to connect the ground
Wire (51).
6. The tank, barrel or drum should be
securely anchored to prevent acci-
dental movement or tipping.
4. Systems should be set up requiring a
minimum amount of suction lift. The
maximum vertical distance from the
surface of the fuel inside the tank to
the inlet of the Pump is 9 feet for gas
and 10 feet for diesel.
attaching Fuel transfer pump to a
vehicle
1. dO nOt attempt to connect and
power this pump to thin wiring from
cigarette lighter.
5. A water separator (not supplied)
should be used if you are going to
pump diesel fuel.
2. nOte: the ground Wire (51) must
always be independently connect-
ed to the frame or chassis of vehi-
cle and/or container being fueled,
or filled. For example, DO NOT
connect green and black wires
6. A filter (not supplied) should be used
at Pump outlet to insure that no
foreign material is transferred to fuel
tanks.
together. unless the Fuel transfer
pump and the fuel tank, barrel or
drum are grounded to one another,
sparking due to a static charge or
wiring faults could possibly ignite
fumes resulting in an explosion.
attaching Fuel transfer pump to
tank or Barrel
1. Tightly thread Suction Pipe (58) into
the inlet flange (24) at the base of the
Pump Housing (1). Thread the Suc-
tion Pipe Extension (59) to Suction
Pipe (58).
3. If this Fuel Transfer Pump is to be
powered from a vehicle power sys-
tem, it is recommended that perma-
nent wiring and connections be made
to the vehicle power system and
include a 30 amp, slow blow fuse.
2. Using a hack saw (not supplied), cut
the Suction Pipe Extension (59) to a
length within 3” of the bottom of the
tank, barrel or drum. DO NOT rest
the Suction Pipe Extension (59) on
the bottom.
connecting Fuel transfer pump
1. Remove the Junction Box Cover (18)
from the Motor Casing Assembly (6)
and straighten wires to make the
stripped wire ends accessible.
3. Screw the Inlet Flange (24) complete-
ly and securely into the tank, barrel or
drum opening.
4. Install the Hose (55) and Nozzle (54)
see “assembly instructions” on
page 6 of this manual.
2. Screw the furnished Cable Connector
(53) into the Conduit Opening of the
Motor Casing Assembly (6).
5. Connect the Cable (60) that extends
from the Cable Connector (53).
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3. Strip 6” of the outer insulation cover-
ing the Cable (60) being careful not to
damage the wire insulation.
10. If attaching to a vehicle, attach one
end of a 30 amp fuse holder to the
end of the remaining wire. Connect
the other end of the fuse holder to
the ungrounded side of the power
source. The battery terminal or the
end of the battery cable is recom-
mended.
4. Pass the stripped end of the Cable
(60) through the Cable Connector
(53) until 2” of the unstripped wire is
within the Motor Casing Assembly
(6).
11. Check all connections to make sure
they are correct. Install the 30 amp
fuse in the fuse holder.
5. Strip 1/2” of the insulation from the
ends of the Cable (60). Connect
these wires to the matching colored
Pump Wires using wire nuts (not sup-
plied).
6. Fold all wires into the Motor Casing
assembly (6) and replace the Junc-
tion Box Cover (18). Make sure all
screws are seated so there is no
space between the Junction Box
Cover (18) and the Motor Casing As-
sembly (6).
7. Run the Cable (60) to the 12 Volt
DC battery or similar power source.
Support the Cable (60) as necessary
and protect it from heat, sharp edges
or any other obstacle that could dam-
age it.
8. Strip the outer Cable (60) covering
as necessary. Make a secure con-
nection to the tank, barrel, drum or
vehicle with the Ground Wire (51).
9. nOte: to determine if a vehicle
system is negative (-) or positive
(+), check the battery marking of
the terminal that is wired to the
vehicles frame or motor block. For
vehicles with negative (-) ground,
connect the negative (black) wire
to the vehicle frame. For vehicles
with positive (+) ground, connect
the positive (red) wire to the ve-
hicle frame.
SKU 98135
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OperatiOn
this Fuel transfer
pump must be set
up according to all
“installation and connection”
information on pages 6 thru 8
of this manual.
to reduce build up of static
electricity and possible fire
and/or explosion, do not wear
synthetic fibers while using
this Fuel transfer pump.
1. Maintain nozzle contact with neck of
container being filled to reduce static
electricity buildup.
2. On initial start-up it may be necessary
to hold the Nozzle (54) open a few
seconds to allow pump to prime.
3. Remove Nozzle (54) from Pump and
insert into neck of tank, barrel, drum
or fuel cell.
4. Begin fueling by squeezing lever on
nozzle (54).
5. Warning: the pump motor is
equipped with thermal overload
protection. if overheated, it will
shut itself off without any damage
to the electrical system. Be sure
to turn off the pump power if this
occurs. as the motor cools, it will
start without warning if the power
is left on.
SKU 98135
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4. To keep Fuel Transfer Pump running
at its best, flush with diesel fuel if it is
to be stored for long periods of time.
maintenance and
servicing
Procedures not specifically
explained in this manual
must be performed only by a
qualified technician.
5. Remove and clean Screen (25) after
every 20 hours of continuous opera-
tion. Cleaning frequency depends
on the type and cleanliness of fluids
being pumped.
tO prevent
seriOus injurY
FrOm accidental
OperatiOn:
turn OFF the power to the
Fuel transfer pump before
any inspection or
6. For safety reasons, service and main-
tenance should be performed regu-
larly by a qualified technician.
maintenance is performed.
tO prevent seriOus
injurY FrOm pump
Failure:
do not use damaged
equipment. if abnormal noise,
vibration, or leakage occurs,
have the problem corrected
before further use.
cleaning, maintenance, and
lubrication
1. BeFOre eacH use, inspect the
general condition of the Pump.
Check for loose screws, loose or bro-
ken electrical wiring, and any other
condition that may affect its safe
operation.
2. Maintain labels and nameplates on
the pump. These carry important
safety information. If unreadable or
missing, contact Harbor Freight Tools
for a replacement.
3. aFter use, clean external surfaces
of the Pump with clean cloth.
SKU 98135
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troubleshooting
problem
possible causes
likely solutions
Pump will not
prime
1. Suction Pipe (58) leak.
2. Bypass Valve (28) open.
3. Vanes (33) sticking.
1. Check for leaks in Suction Pipe (58).
2. Remove and inspect Bypass Valve (28).
3. Check Vanes (33) and slots for nicks, burrs,
wear, and accumulation.
4. Inlet Gasket (26) leakage.
4. Check and tighten all covers and joints.
5. Excessive Rotor (34) or Vane 5. Check Rotor (34) and Vanes (33) for
(33) wear.
excessive wear or possible damage.
6. Motor not operating.
6. Motor Rotor (34) should turn clockwise
at Pump end; if not, have it repaired by a
qualified technician.
7. Motor is running backwards.
1. Dirt in Pump cavity.
2. Motor failure.
7. Check all wiring for correct polarity.
1. Clean out Pump cavity.
Pump hums but
will not operate
2. Motor bearing(s) (2) possibly frozen. Have
Motor repaired by qualified technician.
Low Capacity
1. Excessive dirt in Screen (25). 1. Remove and clean Screen (25).
2. Suction Pipe (58) Problem.
2. Check Suction Pipe (58) for leaks or
restrictions.
3. Bypass Valve (28) sticking.
4. Vanes (33) sticking.
3. Remove and inspect Bypass Valve (28)
4. Check Vanes (33) and slots for wear or
deposits.
5. Excessive Rotor (34) or Vane
(33) wear.
5. Check Rotor (34 and Vanes (33) for
excessive wear or damage.
6. Hose (55) damage.
6. Replace Hose (55) (dO nOt repair)
1. Check incoming line voltage.
Pump runs slowly 1. Incorrect voltage.
2. Vanes (33) sticking.
2. Check Vanes (33) and slots for wear.
3. Wiring problem.
3. Check for loose or broken wiring and replace
if damage is found.
4. Motor Casting Assembly (6)
4. Motor frame must be installed with punch
mark in line with notch in Motor Casting
Assembly (6).
out of line.
5. Brush problem.
5. Check Brushes for excessive wear and
adequate spring tension. Have repaired or
replaced by qualified technician.
6. Motor problem.
7. Motor failure.
6. Inspect armature and commutator and repair
or replace if necessary. Have work done by
a qualified technician.
7. Motor bearing(s) (2) failing. Have repaired
by qualified technician.
Follow all safety precautions whenever diagnosing or servicing the pump.
Disconnect power supply before service by qualified technician only.
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troubleshooting
problem
Motor Stalls
possible causes
1. Bypass Valve (28) sticking
likely solutions
1. Remove and inspect Bypass Valve (28).
2. Check incoming line voltage.
2. Low voltage.
3. Excessive Rotor (34) or Vane 3. Inspect Rotor (34) and Vanes (33) for
(33) wear.
excessive wear or damage and if necessary,
have replaced or repaired by qualified
technician.
Motor overheats
1. Pumping high viscosity fluids. 1. Pump may need to rest 5 minutes after every
5 minutes of pumping.
2. Clogged Screen (25).
2. Remove and clean Screen (25).
3. Restricted Suction Pipe (58),
or Suction Pipe Extension
(59).
3. Remove and clean Suction Pipe (58) and/or
Suction Pipe Extension (59).
4. Damaged, or worn Armature
(3).
4. Replace Armature (3).
5. Have Motor repaired by a qualified
5. Motor failure.
technician.
Motor will not turn 1. No Power.
1. Check incoming power source.
2. Check Line Switch (17).
on
2. Switch failure.
3. Motor failure.
3. Have repaired by qualified technician.
4. Thermal Protector (8) or fuse 4. Check Thermal Protector (8) and fuse and
failure.
replace if needed with identical part by
qualified technician.
Fluid leakage
1. Bad O-Ring or Gasket.
1. Check all O-Rings and Gaskets. (see parts
list on page 12 of this manual.)
2. Dirty shaft seal.
3. Bad shaft seal.
4. Incompatible fluid.
2. Clean seal and seal cavity.
3. Replace seal with identical part.
4. Refer to “Specification Chart” on page 3 of
this manual.
Follow all safety precautions whenever diagnosing or servicing the pump.
Disconnect power supply before service by qualified technician only.
please read tHe FOllOWing careFullY
THe MANUfACTUReR ANd/OR dISTRIBUTOR HAS PROvIded THe PARTS LIST ANd ASSeMBLY
dIAgRAM IN THIS MANUAL AS A RefeReNCe TOOL ONLY. NeITHeR THe MANUfACTUReR OR
dISTRIBUTOR MAKeS ANY RePReSeNTATION OR wARRANTY Of ANY KINd TO THe BUYeR THAT
He OR SHe IS qUALIfIed TO MAKe ANY RePAIRS TO THe PROdUCT, OR THAT He OR SHe IS
qUALIfIed TO RePLACe ANY PARTS Of THe PROdUCT. IN fACT, THe MANUfACTUReR ANd/
OR dISTRIBUTOR exPReSSLY STATeS THAT ALL RePAIRS ANd PARTS RePLACeMeNTS SHOULd
Be UNdeRTAKeN BY CeRTIfIed ANd LICeNSed TeCHNICIANS, ANd NOT BY THe BUYeR. THe
BUYeR ASSUMeS ALL RISK ANd LIABILITY ARISINg OUT Of HIS OR HeR RePAIRS TO THe
ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER
INSTALLATION OF REPLACEMENT PARTS THERETO.
SKU 98135
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parts list
parts list
part
1
description
Q’ty
1
part
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
49
51
52
53
54
55
56
57
58
59
60
description
Q’ty
1
Pump Housing
Bypass Cap
2
Ball Bearing
2
1/4-20 X 3/4” HHCS
Vane(s)
4
3
Armature Assembly
Motor Frame/Magnet Assembly
1/4-20 X 5” Thru-Bolt
Motor Casting Assembly
Switch Plate with Bushing
Thermal Protector
Brush Holder Assembly
Negative Brush Assembly
#8-32 X 1/2” Star Screw
#8-32 X 3/8” Star Screw
5/16” Spring Washer
Switch Shaft Assembly
Positive Brush Assembly
Line Switch
1
5
4
1
Rotor
1
5
2
Rotor Key
1
6
1
Rotor Cover
1
7
1
Rotor Cover Gasket
Seal Assembly
1
8
1
1
9
2
Steel Elbow
1
10
11
13
14
15
16
17
18
19
20
22
23
24
25
26
27
28
29
30
1
5/16-18 X 3/4” HHCS
Nozzle Cover
2
1
1
2
Switch Lever
1
1
5/15 X 18 Locknut
#14 X 5/8” Driver Screw
Locking Link
1
1
1
1
1
1
1/4” Spring Washer
5/16” Retaining Ring
Ground Wire (Green/White)
#8-32 X 3/8” Ground Screw
Cable Connector
Nozzle
2
Junction Box Cover
Negative Wire Lead
Positive Wire Lead
10-24 X 3/4” Star Screw
5/32 X 1/2” Pin
1
1
1
1
1
1
6
1
1
1
Inlet Flange
1
Hose
1
Screen
1
10-24 X .50 Star Screw
1/4-20 X .5 HHCS
Suction Pipe
4
Inlet Gasket
1
4
Check Valve Assembly
Bypass Valve
1
1
1
Suction Pipe Extension
Cable (not shown)
2
Bypass Valve Gasket
Bypass Spring
1
1
1
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assemBlY diagram
record product’s serial number Here:
note: If product has no serial number, record month and year of purchase instead.
note: Some parts are listed and shown for illustration purposes only, and are not avail-
able individually as replacement parts.
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limited 1 Year / 90 daY WarrantY
Harbor Freight Tools Co. makes every effort to assure that its products meet high
quality and durability standards, and warrants to the original purchaser that for a period
of one year from date of purchase that the tank is free of defects in materials and work-
manship (90 days if used by a professional contractor or if used as rental equipment).
Harbor Freight Tools also warrants to the original purchaser, for a period of ninety days
from date of purchase, that all other parts and components of the product are free from
defects in materials and workmanship. This warranty does not apply to damage due di-
rectly or indirectly to misuse, abuse, negligence or accidents, repairs or alterations out-
side our facilities, normal wear and tear, or to lack of maintenance. We shall in no event
be liable for death, injuries to persons or property, or for incidental, contingent, special
or consequential damages arising from the use of our product. Some states do not allow
the exclusion or limitation of incidental or consequential damages, so the above limita-
tion of exclusion may not apply to you. THIS wARRANTY IS exPReSSLY IN LIeU Of
ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES
Of MeRCHANTABILITY ANd fITNeSS.
To take advantage of this warranty, the product or part must be returned to us with
transportation charges prepaid. Proof of purchase date and an explanation of the com-
plaint must accompany the merchandise. If our inspection verifies the defect, we will ei-
ther repair or replace the product at our election or we may elect to refund the purchase
price if we cannot readily and quickly provide you with a replacement. We will return re-
paired products at our expense, but if we determine there is no defect, or that the defect
resulted from causes not within the scope of our warranty, then you must bear the cost
of returning the product.
This warranty gives you specific legal rights and you may also have other rights
which vary from state to state.
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 444-3353
SKU 98135
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