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Portable Wheel Balancer
Item 39741
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
Email our technical support at: tech@harborfreight.com
Copyright© 1998 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 11f
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Specications
Hub Capacities 1-1/2 IN. to 4 IN. Diameter
Type of Wheels Light Truck and Automobile
CAUTION, without the safety alert
symbol, is used to address practices
not related to personal injury.
Safety Warnings
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.
Important Safety Information
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.
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.
WARNING Read all safety warnings
and instructions. Failure to follow the
warnings and instructions may result in
serious injury.
Save all warnings and instructions
for future reference.
1. Do not use the Wheel Balancer until
properly trained. This product is intended
for use by properly trained and experienced
personnel only. If you are not familiar
with the proper and safe operation of a
wheel balancer, do not use until trained.
2. Keep work area clean and well lit.
Cluttered areas invite injuries.
3. Keep children away. Children must never
be allowed in the work area. Do not let them
handle machines, tools, or extension cords.
4. Store idle equipment. When not in use, tools
must be stored in a dry location to inhibit rust.
5. Do not force tool. It will do the
job better and more safely at the
rate for which it was intended.
Do not use inappropriate attachments in
an attempt to exceed the tool capacity.
6. Dress properly. Do not wear loose
clothing or jewelry as they can be caught
in moving parts. Protective, electrically
nonconductive clothes and nonskid footwear
are recommended when working. Wear
restrictive hair covering to contain long hair.
7. Use eye protection. Always wear
ANSI-approved impact safety goggles.
8. Stay alert. Watch what you are doing;
use common sense. Do not operate
any tool when you are tired.
NOTICE is used to address practices
not related to personal injury.
Page 2 For technical questions, please call 1-800-444-3353. SKU 39741
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9. Check for damaged parts. Before using
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any tool, any part that appears damaged
should be carefully checked to determine
that it will operate properly and perform
its intended function. Check for alignment
and binding of moving parts; any broken
parts or mounting xtures; and any other
condition that may affect proper operation.
Any part that is damaged should be properly
repaired or replaced by a qualied technician.
10. Replacement parts and accessories.
When servicing, use only identical
replacement parts. Use of any other
parts will void the warranty. Only use
accessories intended for use with this tool.
11. Do not operate tool if under the inuence
of alcohol or drugs. Read warning labels
on prescriptions to determine if your judgment
or reexes are impaired while taking drugs.
If there is any doubt, do not operate the tool.
SAVE THESE
INSTRUCTIONS.
Assembly
WARNING Read all safety warnings
and instructions. Failure to follow the
warnings and instructions may result in
serious injury.
Save all warnings and instructions
for future reference.
Part numbers used below refer to the Parts
Diagram and Part Number Listing on page 5.
1. Thread Nut (10) onto threaded end of
Shaft (9). Then slide Flat Washer (10)
onto threaded end of Shaft.
2. Insert the threaded end of
the Shaft (9) into the Base (12).
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3. Use Lock Washer (13) and Nut (10)
from underneath to secure the Shaft.
4. The Balancing Cone Set (7) rests on top of
the tip located on top of the Shaft (9). The tip
10
of the Shaft ts into the recessed area on
the underside of the Balancing Cone Set.
When properly tted, the bubble in the
Level (4) should be perfectly centered.
Note: Use the level to make sure this tool
is positioned on a at, level surface.
5. With the Wheel Balancer in place, check the
balance of the Flange Set (1). Lightly tilt the
Flange Set and let it come to rest. It should
easily rock back and forth and come to rest
with the bubble centered in the Level.
Page 3For technical questions, please call 1-800-444-3353.SKU 39741
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Operation
Maintenance and Servicing
WARNING Read all safety warnings
and instructions. Failure to follow the
warnings and instructions may result in
serious injury.
Save all warnings and instructions
for future reference.
1. Remove all old wheel weights from
the wheel to be balanced.
2. Lay the rim of the wheel to be balanced down
centered over the top of the Flange Set.
If the wheel is not properly balanced, the
bubble inside the Level will not be centered
and will rest to one side of the Level.
3. Put one or more wheel weights on the
side of the rim where the bubble rests to
center the bubble in the Level. When the
bubble is centered, the wheel is balanced.
Secure the wheel weights to the rim.
4. Once balanced, remove the wheel
from the Flange Set (1).
Procedures not specically explained
in this manual must be performed
only by a qualied technician.
TO PREVENT INJURY FROM TOOL FAILURE:
Do not use damaged equipment.
If damaged or loose parts are noted, have
the problem corrected before further use.
1. BEFORE EACH USE, inspect the general
condition of the tool. Check for loose
hardware, misalignment or binding of moving
parts, cracked or broken parts, and any other
condition that may affect its safe operation.
2. AFTER USE, wipe external surfaces
of the tool with clean cloth.
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.
Page 4 For technical questions, please call 1-800-444-3353. SKU 39741
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Parts List and Assembly Diagram
Part Description Qty.
1 Flange Set 1
2 Rod and Spring Set 4
3 Screw (M2.5 x 20) 3
4 Level 1
5 Washer 1
6 Level Spring 1
7 Balancing Cone Set 1
8 Retaining Pin 4
9 Shaft 1
10 Nut (M20 x 1.5) 2
11 Flat Washer 1
12 Base 1
13 Lock Washer 1
14 Shaft Receiver 1
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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.
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Page 5For technical questions, please call 1-800-444-3353.SKU 39741
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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 veries 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 specic legal rights and you may also have other rights which vary
from state to state. ththththththththththththththhtthhthtththththththththththththththth
Page 6 For technical questions, please call 1-800-444-3353. SKU 39741
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3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 444-3353
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