Manual For The 63477 3/4 HP Submersible Utility Pump Stainless Steel Construction 4400 GPH

User Manual: Manual for the 63477 3/4 HP Submersible Utility Pump Stainless Steel Construction 4400 GPH 3/4 HP Submersible Utility Pump Stainless Steel Construction 4400 GPH

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Owner’s Manual & Safety Instructions
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.

17d

Visit our website at: http://www.harborfreight.com
Email our technical support at: productsupport@harborfreight.com
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-888-866-5797 as soon as possible.
Copyright© 2017 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.

Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.

Before start-up, note the following:
The Pump must be connected to a Ground Fault Circuit Interrupter (GFCI) protected receptacle which has
been installed according to regulations. The receptacle must have a supply voltage of 120 VAC at 60 Hz.

CAUTION
This Pump has been evaluated for use with water only.

WARNING
IMPORTANT! For your own safety –
before starting to run the Pump, please have
the following items checked by an expert:

9.

1. Risk of electric shock – This Pump is supplied
with a grounding conductor and grounding-type
attachment plug. To reduce the risk of electric shock,
be certain that it is connected only to a properly
grounded, grounding-type receptacle.

10. Do not use an extension cord with this item.

2. Risk of electric shock – This Pump has not been
investigated for use in swimming pool areas.
3. The electrical connections must be
protected from moisture.
4. If there is danger of flooding, the electrical
connections must be taken to higher ground.
5. Circulation of caustic fluids, as well as the circulation
of abrasive materials, must be avoided at all costs.
6. The Pump must be protected from frost.
7. The Pump must be protected from running dry.

To prevent death from electric shock,
Pump must be connected only to a GFCI
protected outlet.

11. WARNING: The cord of this product contains
lead and/or di (2-ethylhexyl) phthalate (DEHP),
chemicals 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.)
12. People with pacemakers should consult their
physician(s) before use. Electromagnetic fields in
close proximity to heart pacemaker could cause
pacemaker interference or pacemaker failure.
13. 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.

8. Access by children should also be
prevented with appropriate measures.

Fluid Type
The Pump is designed for use with water with a maximum temperature of 95° F (35°C).
Do not use the Pump for other fluids, especially not fuels, cleaning fluids, or other chemical products.

Page 2

For technical questions, please call 1-888-866-5797.

Item 63477

Specifications
Electrical Rating
Power Cord Length
Maximum Flow @ 0' Head Lift
Maximum Head Lift @ 0 GPH Flow
Discharge Port
Discharge Port Adapter

120 VAC / 60 Hz / 8.5 A
25'
4400 GPH
40'
1-1/4" NPT
1-1/4" NPT to 3/4" garden hose thread

Installation
The submersible motor Pump must be installed in a stationary position with either:
a. A fixed pipeline or
b. A flexible hose pipe.

Please note!
1. Do not install the Pump by suspending it
unsupported from its delivery pipe or power cord.
The Pump must be suspended from the handle
or be placed on the bottom of the basin.
To ensure that the Pump works properly, keep the
bottom free from sludge and dirt of all kinds.

2. If the water level sinks too low, any sludge in the
basin will dry out and stop the Pump from starting.
To help ensure the Pump will start as required,
check the Pump regularly with start-up tests.

Power Supply
1. The Pump is equipped with a shock-proof plug
according to regulations. The Pump is designed
to be connected to a 120 VAC, 60 Hz, Ground
Fault Circuit Interrupter (GFCI) protected socket.
2. Make sure that the socket is sufficiently
secured and is in excellent condition.

4.

WARNING: To prevent death from electric
shock, Pump must be connected only to
a GFCI protected outlet.

WARNING! If the power cord or plug is damaged,
do not use the Pump. The power cord or plug
may only be repaired by a certified electrician.

3. When the plug is inserted into the socket,
the Pump will start operating.

Areas of use
1. This Pump is designed to pump water only.
2. This Pump is designed to be used for:

3. This Pump should NOT be used for:
• Continuous run, fountain/pond water features

• Removing ground water from
basements and outdoor job sites

• Basement sump applications

• Very high flow

• Potable water systems

• Septic or sewage systems

4. This Pump can also be used to transfer water
(e.g. household, farming, plumbing).

Item 63477

For technical questions, please call 1-888-866-5797.

Page 3

Installation Instructions
GFCIProtected
Receptacle

1. Attach one end of a discharge hose to the
discharge port. Place the other end as needed
to direct the water discharge at least 3 feet
away from the source. Slope the discharge
hose downward, away from the source.

Power
Cord
Discharge
Hose

2. Place Pump in water.
DANGER! Do not use an extension cord with this Pump.
Keep plug dry and secured away from water.
3. Plug Power Cord into GFCI protected
outlet to start the Pump.

Operation
After reading these instructions, consider the following points before starting the Pump:
1. Verify that the Pump rests on the floor of the basin,
if it is not suspended by the handle.

5. Verify that water and moisture cannot
get near the power supply socket.

2. Verify that the discharge pipe is properly connected.

6. Verify that the Pump is installed so
as to prevent running dry.

3. Verify that the electrical connection
is 120 VAC, 60 Hz.

NOTE: The Pump will not start without 2-1/4" of water.

4. Verify that the electrical socket is GFCI
protected and in good condition. Test
GFCI protected outlet before use.

Page 4

For technical questions, please call 1-888-866-5797.

Item 63477

Maintenance

TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION:
Unplug the Pump from its electrical outlet before performing any
inspection, maintenance, or cleaning procedures.
If the Pump is moved during operation, flush it out with clean water after every use.

Quarterly Maintenance
The below maintenance must be performed at least once every 3 months under optimal conditions.
For frequent use, or dirty areas, more frequent maintenance is required.
1. Clean sludge and debris from the bottom of the basin.

3. Make sure discharge pipe is free from leaks.

2. Clean sludge/debris from the impeller.

4. Make sure check valve is functioning properly.

Troubleshooting
Problem

Possible Causes

Possible Solutions

Pump runs, but 1. Impeller clogged.
will not deliver 2. When starting, the water
any water.
height falls too low.
3. Low line voltage.
4. Check valve (sold separately)
stuck or installed backwards.

1. Clean out dirt and debris from impeller.
2. There must be at least 2-1/4" deep water
for the Pump to operate properly.
3. Consult an electrician.
4. Remove and examine check valve.

Pump won’t
start or run.

1. Consult an electrician.

1. Check power connections
and circuits/fuses.
2. Water level too low.
3. Impeller clogged.
4. Defective motor.

2. Allow water level to rise above 2-1/4",
or move Pump to a lower location.
3. Clean out Impeller.
4. Have a qualified service technician repair or replace.

Excessive noise 1. Debris in impeller.
or vibration.
2. Discharge hose restricted.

1. Clean impeller.
2. Clean Pump and discharge hose.

Pump starts
and stops too
frequently.

1. Do not exceed 95° F (35°C) water temperature.
2. Remove and examine check valve.

1. Water temperature too high.
2. Check valve (sold separately)
stuck or installed backwards.
3. Back flow of water from
discharge hose.

3. Install or inspect check valve (sold separately).

Follow all safety precautions whenever diagnosing or servicing the tool.
Disconnect power supply before service.

Item 63477

For technical questions, please call 1-888-866-5797.

Page 5

Parts List and Diagram

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.

Parts List
Part
1
3
4
5
6
7
8
9
10
11
12
13
14
14-1
14-2
14-3
14-4
14-5
14-6
14-7
14-8
15
16

Description
Power Cable
Self-Tapping Screw
Main Body Subassembly
Screw
O-Ring
Base Cover
Cable Sheath
Cable Guide
Cable Fastener
Capacitor 35Uf
Cable Connector
Self-Tapping Screw
Rear Cover
Cable Sheath
Washer
Yellow-Green Wire
Wire Connector
Washer
Screw
Nylon Cap
Tie
Wave Washer
Bearing

Qty.

Part

1
5
1
4
2
1
1
1
2
1
1
3
1
1
1
1
1
1
1
4
1
1
2

17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39

Description
Rotor
Stator
Bushing
Washer
Sealing Ring
Stator Housing
O-Ring
Front Cover
Adjustable Washer
Impeller
Nut
O-Ring
Pressure Washer
Self-Tapping Screw
Bracket
Positioning Ring
Gasket
Inner Base
Base
O-Ring
Self-Tapping Screw
O-Ring
Hose Adapter

Qty.
1
1
1
1
3
1
1
1
1
1
1
1
1
6
1
1
1
1
1
1
1
1
1

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 available individually as replacement parts.
Note: When ordering parts, specify which model the parts are being ordered for.

Page 6

For technical questions, please call 1-888-866-5797.

Item 63477

Assembly Diagram

Item 63477

For technical questions, please call 1-888-866-5797.

Page 7

Limited 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 this product is free from defects in materials and workmanship for the
period of 90 days from the date of purchase. This warranty does not apply to damage due directly or indirectly,
to misuse, abuse, negligence or accidents, repairs or alterations outside our facilities, criminal activity, improper
installation, 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 limitation 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 complaint must accompany the merchandise.
If our inspection verifies the defect, we will either 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 repaired 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 • 1-888-866-5797



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