Harbor Freight Tools 66784 Product manual
12V Diesel Transfer Pump
Item 66784
Read this material before using this
product. Failure to do so can result in
serious injury. SAVE THIS MANUAL.
When unpacking, make sure that the product is intact and undamaged.
If any parts are missing or broken, please call 1-800-444-3353 as soon as possible.
Visit our website at: http://www.harborfreight.com
Copyright© 2009 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. Tools required for assembly and service may not be included.
Manual Revised 11h
Save This Manual
Keep this manual for the safety warnings and
precautions, assembly, operating, inspection,
maintenance and cleaning procedures. Write the
product’s serial number in the back of the manual near
the assembly diagram (or month and year of purchase
if product has no number). Keep this manual and the
receipt in a safe and dry place for future reference.
Safety Alert Symbol
and Signal Words
In this manual, on the labeling, and all other
information provided with this product:
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.
Work Area
a. Keep the work area clean and well lighted.
Cluttered or dark areas increase the risks of
electric shock, re, and injury to persons.
b. Do not operate pumps in explosive
atmospheres, such as in the presence of
ammable liquids, gases or dust. Pumps create
sparks which may ignite the dust or fumes.
c. Keep bystanders, children, and visitors away
while operating the pump. Distractions are able
to result in the loss of control of the pump.
Electrical Safety
a. Do not expose pumps to rain or wet
conditions. Water entering a pump will
increase the risk of electric shock.
b. Do not abuse the Power Cables. Never use
the cables for carrying or pulling the pump.
Keep cables away from heat, oil, sharp edges
or moving parts. Damaged or entangled
cables increase the risk of electric shock.
Personal Safety
WARNING indicates a hazardous situation which, if
not avoided, could result in death or serious injury.
CAUTION, used with the safety alert symbol,
indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury.
NOTICE is used to address practices
not related to personal injury.
CAUTION, without the safety alert symbol, is used
to address practices not related to personal injury.
IMPORTANT SAFETY
INSTRUCTIONS
INSTRUCTIONS PERTAINING TO A
RISK OF FIRE, ELECTRIC SHOCK,
OR INJURY TO PERSONS
WARNING – When using pumps, basic precautions
should always be followed, including the following:
a. Stay alert, watch what you are doing and
use common sense when operating a pump.
Do not use a pump while you are tired or under
the inuence of drugs, alcohol or medication.
A moment of inattention while operating pumps
may result in serious personal injury.
b. Prevent unintentional starting. Ensure
the switch is in the off-position before
connecting to the power supply.
c. Do not overreach. Keep proper
footing and balance at all times.
Proper footing and balance enables better
control of the pump in unexpected situations.
d. Use safety equipment. A dust mask,
non-skid safety shoes and a hard hat must
be used for the applicable conditions.
e. Wear ANSI-approved safety goggles
during setup and use.
f. Dress properly. Do not wear loose clothing or
jewelry. Keep your hair, clothing and gloves
away from moving parts. Loose clothes, jewelry
or long hair can be caught in moving parts.
Pump Use and Care
a. Do not force the pump. Use the correct pump for
your application. The correct pump will do the job
better and safer at the rate for which it was designed.
Page 2 For technical questions, please call 1-800-444-3353. SKU 66784
b. Do not use the pump if the switch does not turn
it on and off. Any pump that cannot be controlled
with the switch is dangerous and must be repaired.
c. Disconnect the Cables from the power
supply before making any adjustments,
changing accessories, or storing pumps.
Such preventive safety measures reduce the
risk of starting the pump accidentally.
d. Store idle pumps out of the reach of children and
do not allow persons unfamiliar with the pump or
these instructions to operate the pump. Pumps
are dangerous in the hands of untrained users.
e. Maintain pumps. Check for misalignment or
binding of moving parts, breakage of parts
and any other condition that may affect
the pump’s operation. If damaged, have the
pump repaired before use. Many accidents
are caused by poorly maintained pumps.
4. Do not use for uid transfer into or from aircraft.
5. This product is not designed for use with medical
products, water, or uids for human consumption.
6. Anchor the barrel or tank (not included)
to prevent tipping.
7. Do not use while on a motorized vehicle
while the engine is running.
8. Avoid unintentional starting. Prepare to
begin work before turning on the Pump.
9. When using a handheld pump, maintain
a rm grip on the pump with both
hands to resist starting torque.
10. Do not leave the Pump unattended
when it is connected to a power supply.
Turn off the pump, and disconnect it from
its power supply before leaving.
f. Use the pump, accessories and pump bits
etc. in accordance with these instructions,
taking into account the working conditions
and the work to be performed. Use of
the pump for operations different from those
intended could result in a hazardous situation.
Battery Precautions
a. Under abusive conditions, liquid may be
ejected from the battery. Avoid contact.
If contact accidentally occurs, ush with
water. If liquid contacts eyes, additionally
seek medical help. Liquid ejected from the
battery may cause irritation or burns.
Service
a. Pump service must be performed only
by qualied repair personnel, using
only identical replacement parts.
Specic Safety Instructions
1. This Pump is designed for use with diesel fuel or
kerosene only. Not for use with uids that have a
ash point below 100° F (i.e., gasoline, alcohol).
2. Maintain labels and nameplates on
the Pump. These carry important safety
information. If unreadable or missing, contact
Harbor Freight Tools for a replacement.
11. This product is not a toy. Keep
it out of reach of children.
12. People with pacemakers should consult their
physician(s) before use. Electromagnetic elds
in close proximity to heart pacemaker could
cause pacemaker interference or pacemaker
failure. In addition, people with pacemakers should:
• Avoid operating alone.
• Do not use with power switch locked on.
• Properly maintain and inspect
to avoid electrical shock.
13. WARNING: Handling the cord on this product will
expose you to lead, a chemical known to the State of
California to cause cancer, and birth defects or other
reproductive harm. Wash hands after handling.
(California Health & Safety Code § 25249.5, et seq.)
The brass components of this product contain lead,
a chemical known to the State of California to cause
birth defects.
(California Health & Safety Code § 25249.5, et seq.)
14. The warnings, precautions, and instructions
discussed in this instruction manual cannot
cover all possible conditions 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 product,
but must be supplied by the operator.
SAVE THESE
3. Never smoke near the Pump or use
the Pump near an open ame.
INSTRUCTIONS.
Page 3For technical questions, please call 1-800-444-3353.SKU 66784
Functional Description
Specications
Only use with diesel fuel or
kerosene.
Product
Applications
Electrical Input 12VDC / 13.5A
Fuse 25A (included)
Motor
Pump
Operating Conditions
Hose Size
Thermal Overload
Protection
Do not use with gasoline,
alcohol, water, corrosive
chemicals, solvents, or
liquids that have a ash
point below 100° F.
30 Minute Duty Cycle*
2800 RPM
Self-Priming, Volumetric,
Rotating Vane,
with Bypass Valve
Inlet/Outlet: 3/4″ Female NPT
Lift: 6.6 Feet
Flow Rate: 10 GPM
-4° – 140° F
up to 90% Relative Humidity
0.75 IN. I.D., 1.125 IN. O.D.,
13 FT. Long
Yes
*Duty Cycle (Duration of Use)
30 Minute Duty Cycle
30 minutes welding
followed by
at least 30 minutes of rest
Avoid damage to the Pump by not pumping for
more than the prescribed duty cycle time. The Duty
Cycle denes the number of minutes, within a one hour
period, during which a given pump can pump without
overheating. For example, this Pump with a 30 minute
duty cycle must be allowed to rest for at least 30 minutes
after every 30 minutes of use. Failure to carefully
observe duty cycle limitations can easily over-stress
a pump contributing to premature pump failure.
This pump has an internal thermal protection system
to help prevent this sort of over-stress. When the
unit overheats, it automatically shuts down, then it
automatically begins pumping again after cooling off.
When the pump can be used again, use shorter pumping
periods and longer rest periods to prevent needless wear.
Page 4 For technical questions, please call 1-800-444-3353. SKU 66784
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