HANDHELD
CONCRETE VIBRATOR
90304
ASSEMBLY AND OPERATING INSTRUCTIONS
3491 Mission Oaks Blvd., Camarillo, CA 93011
Copyright © 2003 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.
For technical questions and replacement parts, please call 1-800-444-3353
8.
9.
Do not overreach. Keep proper footing and balance at all times. Do not reach over
or across running machines.
Maintain tools with care. Keep tools clean for better and safer performance. Follow
instructions for lubricating and changing accessories. Inspect tool cords periodically,
and if damaged, have them repaired by an authorized technician. The handle must be
kept clean, dry, and free from oil and grease at all times.
10. Disconnect power. Unplug tool when not in use.
11. Avoid unintentional starting. Be sure the trigger is in the Off position when not in
use and before plugging in. Do not carry any tool with your finger on the trigger,
whether it is plugged in or not.
12. Stay alert. Watch what you are doing, use common sense. Do not operate any tool
when you are tired. The Concrete Vibrator is a physically demanding tool to use. Use
the tool for short periods of time to avoid fatigue and possible accidents.
13. Check for damaged parts. Before using 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 fixtures; and any other condition that may affect proper operation. Any
part that is damaged should be properly repaired or replaced by a qualified
technician. Do not use the tool if the trigger does not turn On and Off properly.
14. Guard against electric shock. Prevent body contact with grounded surfaces such
as pipes, radiators, ranges, and refrigerator enclosures.
15. 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. Approved accessories are available from Harbor
Freight Tools.
16. Do not operate tool if under the influence of alcohol or drugs. Read warning
labels if taking prescription medicine to determine if your judgment or reflexes are
impaired while taking drugs. If there is any doubt, do not operate the tool.
17. Use proper size and type extension cord. If an extension cord is required, it must
be of the proper size and type to supply the correct current to the tool without heating
up. Otherwise, the extension cord could melt and catch fire, or cause electrical
damage to the tool. This tool requires use of an extension cord with up to 10 amps
capability (up to 50 feet), with wire size rated at 18 AWG. Longer extension cords
require larger size wire. If you are using the tool outdoors, use an extension cord rated
for outdoor use. (signified by “WA” on the jacket).
18. Maintenance. For your safety, service and maintenance should be performed
regularly by a qualified technician.
19. Pacemaker safety warning. People with pacemakers should consult with their
physician(s) before using this product; operation of equipment in close proximity to a
heart pacemaker could cause interference or failure of the pacemaker.
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Note: Performance of this tool may vary depending on variations in local line voltage or tool
battery power. Extension cord usage may also affect tool performance.
Warning: The warnings, cautions, and instructions discussed in this instruction manual
cannot cover all possible conditions and situations that may occur. It must be under-
stood by the operator that common sense and caution are factors which cannot be
built into this product, but must be supplied by the operator.
WARNING: This product contains or, when used, produces a chemical known to the
State of California to cause cancer and birth defects or other reproductive harm.
(California Health & Safety Code 25249.5, et seq.)
Unpacking
When unpacking, check to make sure the parts listed on page 6 are included. If any parts
are missing or broken, please call Harbor Freight Tools at the number on the cover of this
manual as soon as possible.
FIGURE 1
Safety (#17)
Trigger (#16)
Base (#15)
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Operation
Note: Only use the Concrete Vibrator to vibrate and smooth wet concrete. Do not use it on
hard surfaces or you will damage the unit.
Note: Position the power cord away from the wet concrete and keep it dry at all times. Keep
the motor housing dry.
Warning! Never operate this Concrete Vibrator if the power cord or electrical compo-
nents are damaged or the seals are compromised. Never plug in the power cord when
wet or standing on damp or wet ground. Exercise extreme caution when working with
electrical equiptment in the presence of water to maintain your personal insulation to
avoid shock. Do not allow others in the work area when working with electrical
equipment. Use GFCI (Ground Fault Circuit Interuppter) outlets when using this tool.
1. Once the concrete has been hand smoothed, plug in the Concrete Vibrator.
2. Push in the Safety (#17) and then gently squeeze the Trigger (#16) to start the unit.
3. Set the Base (#15) on the concrete and slowly move it around without applying too much
force. Let the unit do the work.
4. When finished, release the Trigger (#16) and unplug the unit.
5. Be careful not to smash fingers, hands and feet under the tool’s base while the Concrete
Vibrator is in operation.
Maintenance
Warning! Unplug the Concrete Vibrator before attempting any maintenance.
1. Clean the unit immediately after each use, before any concrete dries on it. Do not
submerse the unit in water or you will short our and damage the motor. Use a wet cloth to
remove concrete from the Base (#15) and Shell (#7). Do not use any harsh detergents or
solvents to clean the Concrete Vibrator.
2. Dry the unit with a lint free cloth.
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM IN THIS
MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER NOR DISTRIBU-
TOR 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.
NOTE: Some parts are listed and shown for illustration purposes only and are not available
individually as replacement parts.
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Parts List
Part No.
1
2
Description
Handle
Cord
Plug
3
4
5
6
Handle Grip
Capacitor
Stator
7
8
9
Shell
End Cover
Nut
10
11
12
13
14
15
16
17
Spring Washer
Steel Plate
End Lid
Bearing
Rotor
Base
Trigger
Safety
Assembly Drawing
17
16
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