1/2” D-HANDLE VSR DRILL
Model 47991
SET UP AND OPERATING INSTRUCTIONS
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Copyright© 2002 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.
For technical questions or replacement parts, please call 1-800-444-3353.
Revised Manual 07d, 09j, 11a
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11. Remove adjusting keys and
wrenches. Check that keys and
adjusting wrenches are removed
from the tool or machine work surface
before plugging it in.
proximity to heart pacemaker could
cause pacemaker interference or
pacemaker failure. In addition, people
with pacemakers should:
• Avoid operating alone.
• Don’t use with power switch locked
on.
• Properly maintain and inspect to
avoid electrical shock.
12. Avoid unintentional starting. Do not
carry any tool with your finger on the
trigger, whether it is plugged in or not.
• Any power cord must be properly
grounded. Ground Fault Circuit
Interrupter (GFCI) should also be
implemented – it prevents sustained
electrical shock.
13. Stay alert. Watch what you are doing,
use common sense. Do not operate
any tool when you are tired.
14. Take caution as some woods
contain preservatives such as
copper chromium arsenate (CCA)
which can be toxic. When drilling
these materials extra care should be
taken to avoid inhalation and minimize
skin contact.
17. 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.
15. WARNING: Some dust created by
power sanding, sawing, grinding,
drilling, and other construction
activities, contains chemicals
known [to the State of California] to
cause cancer, birth defects or other
reproductive harm. Some examples
of these chemicals are:
Lead from lead-based paints
18. Guard against electric shock.
Prevent body contact with grounded
surfaces such as pipes, radiators,
ranges, and refrigerator enclosures.
Crystalline silica from bricks and
cement or other masonry products
Arsenic and chromium from chemically
treated lumber
Your risk from these exposures
varies, depending on how often you
do this type of work. To reduce your
exposure to these chemicals: work in
a well ventilated area, and work with
approved safety equipment, such as
those dust masks that are specially
designed to filter out microscopic
particles. (California Health & Safety
Code § 25249.5, et seq.)
19. 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.
20. Do not operate tool if under the
influence of alcohol or drugs. Read
warning labels on prescriptions to
16. People with pacemakers should
consult their physician(s) before
use. Electromagnetic fields in close
determine if your judgment or reflexes
are impaired while taking drugs. If there
is any doubt, do not operate the tool.
SKU 47991
For technical questions, please call 1-800-444-3353.
Page 3
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21. 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 of 0 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).
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.
OPERATION
Refer to FIGURE 1 below.
Warning! Always unplug the unit when
changing bits.
Warning! After drilling or driving screws,
the bit will be extremely hot. Do not
touch it until it has had ample time to
cool down.
22. Maintenance. For your safety,
maintenance should be performed
regularly by a qualified technician.
23. The warnings, cautions, and
instructions discussed in this
instruction manual cannot cover
all possible conditions and
1. Insert the Chuck Key (41) into one of
the holes in the Chuck (3) and turn it
counterclockwise to open the jaws.
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.
2. Insert the bit and hand tighten it, then
tighten it with the Chuck Key (41) by
turning it clockwise.
Carbon Brush
(also found on bottom of tool)
Torque
Switch
Figure 1
Trigger
Chuck
Lock Button
Side Handle
Power Cord
SKU 47991
For technical questions, please call 1-800-444-3353.
Page 4
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3. With heavy leather gloves on, tug on
the bit and make sure it is securely
attached. Check that it is straight.
use lubricants with brass, copper, and
cast iron. Grasp the handles firmly with
both hands and slowly squeeze the
Trigger (34). Never operate the tool
without the side handle. Never force
the tool. Only apply light pressure
when horizontal drilling.
Note: Always use sharp bits. Dull or
damaged bits may cause undue stress
on the drill and possibly break causing
injury. Bits are available at Harbor
Freight Tools.
8. When driving screws, use bits suitable
for the type and size of screw you are
using. Drill a pilot hole for the screw
head to bite into. Use the lowest
torque setting. Grasp the handles
firmly with both hands and slowly
squeeze the Trigger (34). Never force
the tool. To back out a screw, stop and
change the Directional Switch to the
back position.
4. Securely clamp your workpiece.
5. Locate the Side Handle on the desired
side of the tool.
Drilling
6. When drilling wood, place the bit
at the point to be drilled. If you are
drilling a hard, smooth surface, use a
punch to mark the drill location. Set
the Directional Switch forward. Grasp
the handles firmly with both hands
and slowly squeeze the Trigger (34).
Never operate the tool without the side
handle. Never force the tool. Only
apply light pressure when horizontal
drilling. If you need more or less
torque, use the torque adjustment on
the top of the drill.
MAINTENANCE
1. Unplug the drill while performing
maintenance.
2. Periodically check the mounting screws
and tighten if necessary.
3. Clean the unit with a damp cloth.
Never use solvents to clean the unit.
4. Inspect the chuck and remove any dirt
or debris.
Note: When drilling plastics or plastic
coated chip board, follow the same
directions as stated in number 5 for
wood.
5. Inspect the Carbon Brushes (29). See
Figure 1 on page 4.
• Remove the Carbon Brush Cap
(30) on top of the drill.
Note: If a bit becomes wedged into the
workpiece, stop and change the
Directional Switch to the reverse
position. Then slowly squeeze the
Trigger to back the bit out of the work
piece.
• Take the Carbon Brush (29) out of
the Brush Holder (28). If it is dirty,
use a pencil eraser to clean it. If it
is worn, replace it and replace the
Carbon Brush Cap (30). If you
replace one Carbon Brush, you
must replace them both. Repeat
the process with the Carbon Brush
Cap (30) on the bottom of the drill.
7. When drilling metal, always use a
punch to mark the drilling position.
Use a lubricant to prolong the life of
the bit and increase the drilling action
with most metals. With steel, tin, and
sheet metal use a light machine oil,
with aluminum, use paraffin. Do not
REV 07d
SKU 47991
For technical questions, please call 1-800-444-3353.
Page 5
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PARTS LIST
Part
1
Description
Q’ty
1
Part
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
Description
Windshield
Q’ty
1
Screw
Washer
Chuck
2
1
Bolt
2
3
1
Stator
1
4
Fender Ring
Felt Cover
Felt
1
Bearing
1
5
1
Bearing Sleeve
Motor Housing
Brush Holder
Carbon Brush
Carbon Brush Cap
Right Handle
Screw
1
6
1
1
7
1/2 Circle Key
Spindle
1
2
8
1
2
9
Screw
4
2
10
11
12
13
14
15
16
17
18
19
20
21
Bearing
1
1
Head Shell
Gear
1
6
1
Governor
1
Needle Bearing
Needle Bearing
1/2 Circle Key
Middle Gear
Gear
1
Trigger
1
1
Cable Clamp
Screw
1
1
2
1
Cable Sheath
Power Cord
Left Handle
Screw
1
1
1
Needle Bearing
Middle Cover
Bearing
1
1
1
8
1
Chuck Key
1
Armature
1
Note: Chuck Key (41) not shown in Assembly Drawing.
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 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
TECHNICIANSAND NOT BYTHE BUYER. THE BUYERASSUMESALLRISKAND LIABILITYARISING 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.
SKU 47991
For technical questions, please call 1-800-444-3353.
Page 6
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ASSEMBLY DRAWING
1
2
3
4
5
6
7
8
9
10
11
12
13
4
34
36
37
35
SKU 47991
For technical questions, please call 1-800-444-3353.
Page 7
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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 • (800) 444-3353
SKU 47991
For technical questions, please call 1-800-444-3353.
Page 8
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