Harbor Freight Tools Drill 03670 User Manual

3/8” VSR DRILL  
Model 03670  
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, please call 1-800-444-3353.  
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ELECTRICAL SAFETY  
4.  
Grounded tools must be plugged into an outlet properly installed and  
grounded in accordance with all codes and ordinances. Never remove the  
grounding prong or modify the plug in any way. Do not use any adapter  
plugs. Check with a qualified electrician if you are in doubt as to whether  
the outlet is properly grounded. If the tools should electrically malfunction or  
break down, grounding provides a low resistance path to carry electricity away  
from the user.  
5.  
6.  
Double insulated tools are equipped with a polarized plug (one blade is  
wider than the other). This plug will fit in a polarized outlet only one way. If  
the plug does not fit fully in the outlet, reverse the plug. If it still does not  
fit, contact a qualified electrician to install a polarized outlet. Do not  
change the plug in any way. Double insulation eliminates the need for the  
three wire grounded power cord and grounded power supply system.  
Avoid body contact with grounded surfaces such as pipes, radiators,  
ranges, and refrigerators. There is an increased risk of electric shock if your  
body is grounded.  
7.  
Do not expose power tools to rain or wet conditions. Water entering a power  
tool will increase the risk of electric shock.  
8.  
Do not abuse the Power Cord. Never use the Power Cord to carry the tools  
or pull the Plug from an outlet. Keep the Power Cord away from heat, oil,  
sharp edges, or moving parts. Replace damaged Power Cords immedi-  
ately. Damaged Power Cords increase the risk of electric shock.  
9.  
When operating a power tool outside, use an outdoor extension cord  
marked “W-A” or “W”. These extension cords are rated for outdoor use, and  
reduce the risk of electric shock.  
PERSONAL SAFETY  
10.  
11.  
Stay alert. Watch what you are doing, and use common sense when oper-  
ating a power tool. Do not use a power tool while tired or under the influ-  
ence of drugs, alcohol, or medication. A moment of inattention while operat-  
ing power tools may result in serious personal injury.  
Dress properly. Do not wear loose clothing or jewelry. Contain long hair.  
Keep your hair, clothing, and gloves away from moving parts. Loose  
clothes, jewelry, or long hair can be caught in moving parts.  
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12.  
13.  
14.  
15.  
Avoid accidental starting. Be sure the Power Switch is off before plugging  
in. Carrying power tools with your finger on the Power Switch, or plugging in  
power tools with the Power Switch on, invites accidents.  
Remove adjusting keys or wrenches before turning the power tool on. A  
wrench or a key that is left attached to a rotating part of the power tool may result  
in personal injury.  
Do not overreach. Keep proper footing and balance at all times. Proper  
footing and balance enables better control of the power tool in unexpected  
situations.  
Use safety equipment. Always wear eye protection. Dust mask, non-skid  
safety shoes, hard hat, or hearing protection must be used for appropriate  
conditions.  
TOOL USE AND CARE  
16.  
Use clamps (not included) or other practical ways to secure and support  
the workpiece to a stable platform. Holding the work by hand or against your  
body is unstable and may lead to loss of control.  
17.  
Do not force the tool. Use the correct tool for your application. The correct  
tool will do the job better and safer at the rate for which it is designed.  
18.  
Do not use the power tool if the Power Switch does not turn it on or off.  
Any tool that cannot be controlled with the Power Switch is dangerous and must  
be replaced.  
19.  
Disconnect the Power Cord Plug from the power source before making any  
adjustments, changing accessories, or storing the tool. Such preventive  
safety measures reduce the risk of starting the tool accidentally.  
20.  
21.  
Store idle tools out of reach of children and other untrained persons. Tools  
are dangerous in the hands of untrained users.  
Maintain tools with care. Keep cutting tools sharp and clean. Properly  
maintained tools with a sharp cutting edge are less likely to bind and are easier  
to control. Do not use a damaged tool. Tag damaged tools “Do not use” until  
repaired.  
22.  
Check for misalignment or binding of moving parts, breakage of parts, and  
any other condition that may affect the tool’s operation. If damaged, have  
the tool serviced before using. Many accidents are caused by poorly main-  
tained tools.  
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23.  
Use only accessories that are recommended by the manufacturer for your  
model. Accessories that may be suitable for one tool may become hazardous  
when used on another tool.  
SERVICE  
24.  
Tool service must be performed only by qualified repair personnel. Service  
or maintenance performed by unqualified personnel could result in a risk of injury.  
25.  
When servicing a tool, use only identical replacement parts. Follow  
instructions in the “Inspection, Maintenance, And Cleaning” section of this  
manual. Use of unauthorized parts or failure to follow maintenance instructions  
may create a risk of electric shock or injury.  
SPECIFIC SAFETY RULES  
1.  
Hold tool by insulated gripping surfaces when performing an operation  
where the cutting tools may contact hidden wiring or its own cord. Contact  
with a ‘live’ wire will make exposed metal parts of the tool ‘live’ and shock the  
operator.  
2.  
3.  
Maintain labels and nameplates on the Drill. These carry important information.  
If unreadable or missing, contact Harbor Freight Tools for a replacement.  
Always wear safety impact eye goggles and heavy work gloves when using  
the Drill. Using personal safety devices reduce the risk for injury. Safety impact  
eye goggles and heavy work gloves are available from Harbor Freight Tools.  
4.  
Maintain a safe working environment. Keep the work area well lit. Make sure  
there is adequate surrounding workspace. Always keep the work area free of  
obstructions, grease, oil, trash, and other debris. Do not use a power tool in  
areas near flammable chemicals, dusts, and vapors. Do not use this product in a  
damp or wet location.  
5.  
6.  
Make sure to read and understand all instructions and safety precautions as  
outlined in the manufacturer’s manual for the Drill.  
When using a hand-held power tool, always maintain a firm grip on the tool  
with both hands to resist starting torque.  
7.  
Always keep the extension cord away from moving parts on the tool.  
8.  
Avoid unintensional starting. Make sure you are prepared to begin work  
before turning on the Drill.  
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10.  
11.  
Make sure the Drill bit being used is free from burrs and any other foreign  
matter which could damage the tool.  
Never leave the Drill unattended when it is plugged into an electrical outlet.  
Turn off the tool, and unplug it from its electrical outlet.  
12.  
13.  
Always unplug the Drill from its electrical outlet before performing and  
inspection, maintenance, or cleaning procedures.  
WARNING! Some dust created by power sanding, sawing, grinding, drilling,  
and other construction activities, contain chemicals known (to the State of Cali-  
fornia) to cause cancer, birth defects or other reproductive harm. Some ex-  
amples of these chemicals are: lead from lead-based paints, 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.)  
14.  
WARNING! People with pacemakers should consult their physician(s)  
before using this product. Operation of electrical equipment in close proximity to  
a heart pacemaker could cause interference or failure of the pacemaker.  
GROUNDING  
WARNING!  
Improperly connecting the grounding wire can result in the risk of electric  
shock. Check with a qualfified electrician if you are in doubt as to whether the  
outlet is properly grounded. Do not modify the power cord plug provided with  
the tool. Never remove the grounding prong from the plug. Do not use the  
tool if the power cord or plug is damaged. If damaged, have it repaired by  
a service facility before use. If the plug will not fit the outlet, have a proper  
outlet installed by a qualified electrician.  
GROUNDED TOOLS: TOOLS WITH THREE PRONG PLUGS  
1.  
Tools marked with “Grounding Required” have a three wire cord and three prong  
grounding plug. The plug must be connected to a properly grounded outlet. If  
the tool should electrically malfunction or break down, grounding provides a low  
resistance path to carry electricity away from the user, reducing the risk of elec-  
tric shock. (See Figure A.)  
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2.  
3.  
The grounding prong in the plug is connected through the green wire inside the  
cord to the grounding system in the tool. The green wire in the cord must be the  
only wire connected to the tool’s grounding system and must never be attached  
to an electrically “live” terminal. (See Figure A.)  
Your tool must be plugged into an appropriate outlet, properly installed and  
grounded in accordance with all codes and ordinances. The plug and outlet  
should look like those in the following illustration. (See Figure A.)  
FIGURE A  
DOUBLE INSULATED TOOLS: TOOLS WITH TWO PRONG PLUGS  
4.  
Tools marked “Double Insulated” do not require grounding. They have a special  
double insulation system which satisfies OSHA requirements and complies with  
the applicable standards of Underwriters Laboratories, Inc., the Canadian  
Standard Association, and the National Electrical Code. (See Figure B.)  
5.  
Double insulated tools may be used in either of the 120 volt outlets shown in the  
following illustration. (See Figure B.)  
FIGURE B  
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EXTENSION CORDS  
1.  
2.  
Grounded tools require a three wire extension cord. Double Insulated tools  
can use either a two or three wire extension cord.  
As the distance from the supply outlet increases, you must use a heavier gauge  
extension cord. Using extension cords with inadequately sized wire causes a  
serious drop in voltage, resulting in loss of power and possible tool damage.  
(See Figure C, next page.)  
3.  
4.  
5.  
The smaller the gauge number of the wire, the greater the capacity of the cord.  
For example, a 14 gauge cord can carry a higher current than a 16 gauge cord.  
(See Figure C.)  
When using more than one extension cord to make up the total length, make  
sure each cord contains at least the minimum wire size required.  
(See Figure C.)  
If you are using one extension cord for more than one tool, add the nameplate  
amperes and use the sum to determine the required minimum cord size.  
(See Figure C.)  
6.  
If you are using an extension cord outdoors, make sure it is marked with the suffix  
“W-A” (“W” in Canada) to indicate it is acceptable for outdoor use.  
7.  
Make sure your extension cord is properly wired and in good electrical condition.  
Always replace a damaged extension cord or have it repaired by a qualified  
electrician before using it.  
8.  
Protect your extension cords from sharp objects, excessive heat, and damp or  
wet areas.  
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SYMBOLOGY  
Double Insulated  
Canadian Standards  
Association  
Underwriters  
Laboratories, Inc.  
Volts Alternating Current  
V ~  
A
Amperes  
n
No Load Revolutions  
per Minute (RPM)  
o
xxxx/min.  
UNPACKING  
When unpacking, check to make sure all the parts shown on the Parts List on page 13  
are included. If any parts are missing or broken, please call Harbor Freight Tools at the  
number shown on the cover of this manual as soon as possible.  
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ASSEMBLY AND OPERATING INSTRUCTIONS  
NOTE: For additional information regarding the parts listed in the following pages, refer  
to the Assembly Diagram on page 14.  
FIGURE 1  
Chuck  
Belt Hanger  
Level  
Directional Switch  
Torque Adjustment  
Lock Button  
Trigger  
Tool Hanger Loop  
Power Cord  
Refer to FIGURE 1 and 2.  
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.  
Loading Bits  
1. To load a bit, hold the back end of the Chuck (#5)  
with one hand, while turning the front end counter-  
FIGURE 2  
clockwise to open the jaws.  
2. Insert the bit.  
Front End  
3. Hold the back end of the Chuck (#5) with one hand,  
while turning the front end clockwise to close and  
tighten the jaws around the bit shank.  
4. With heavy leather gloves on, tug on the bit and  
make sure it is securely attached. Check that it is  
straight.  
Back End  
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.  
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Operation (continued)  
Refer to FIGURE 1, 2, and 3.  
Note: When holding the drill in your hand, the Directional Switch points toward the right,  
the unit will drill forward. When it is pointed to the left, the unit will drill in reverse.  
Drilling  
1. Securely clamp your workpiece.  
2. 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 to  
forward (right). Grasp the handle firmly and slowly squeeze the Trigger. Never force the  
tool. Only apply light pressure when drilling. If you need more or less torque, use the  
Torque Adjustment on the Trigger. Turning the Torque Adjustment screw toward the +  
sign will add more torque. See FIGURE 3.  
Note: When drilling plastics or plastic coated chip board, follow the same directions as  
stated in number 2 for wood.  
Note: If a bit becomes wedged into the workpiece, change the Directional Switch to the  
reverse position.  
3. 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 use lubricants  
with brass, copper, and cast iron. Grasp the handle firmly and slowly squeeze the Trigger.  
Never force the tool. Only apply light pressure when drilling.  
4. 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 handle  
firmly with both hands and slowly squeeze the Trigger. Never force the tool. To back out a  
screw, change the Directional Switch to the reverse position (left).  
FIGURE 3  
Using the Lock Button.  
When you are drilling for  
extended times and want to  
take your finger off of the  
Trigger, use the Lock Button.  
Directional  
Squeeze the Trigger to start the  
drill, then push the Lock Button.  
The drill will stay on. When you  
are finished, just squeeze the  
Trigger to stop the drill.  
Torque Adjustment  
Trigger  
Lock Button  
PAGE 11  
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INSPECTION, MAINTENANCE, AND CLEANING  
Refer to the Assembly Drawing on page 14.  
1.  
WARNING! Make sure the Power Switch of the Drill is in its “OFF” position  
and that the tool is unplugged from its electrical outlet before performing any  
inspection, maintenance, or cleaning procedures.  
2.  
BEFORE EACH USE, inspect the general condition of the Drill. Check for loose  
screws, misalignment or binding of moving parts, cracked or broken parts, dam-  
aged electrical wiring, and any other condition that may affect its safe operation. If  
abnormal noise or vibration occurs, have the problem corrected before further  
use. Do not use damaged equipment.  
3.  
4.  
5.  
6.  
Periodically check the mounting screws and tighten if necessary.  
Clean the unit with a damp cloth. Never use solvents to clean the unit.  
Inspect the chuck and remove any dirt or debris.  
Inspect the Carbon Brushes (#14) periodically. See the Assembly Drawing on page  
9. Remove the Carbon Brush Holder (#15) on the side of the drill. Take the  
Carbon Brush (#14) out of the Carbon Brush Holder (#15). If it is dirty, use a  
pencil eraser to clean it. If it is worn, replace it and replace the Carbon Brush (#14).  
If you replace one Carbon Brush, you must replace them both. Repeat the process  
with the Carbon Brush Holder (#15) on the other side of the drill.  
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 MANUFACTUER 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.  
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Parts List  
Part No.  
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
Description  
Qty.  
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
2
1
1
1
2
2
2
1
2
6
Left Motor Housing  
Screw M5 x 22  
Spring Washer (5)  
Chuck  
Spindle  
Half Circle Key  
Bearing 201  
Gear  
Fender Ring 10  
Brass Bushing  
Bearing  
Armature  
Carbon Brush  
Carbon Brush Holder  
Bearing  
Stator  
Clip  
Self Tapping Screw 4 x 12  
Cable Sheath  
Power Cord and Plug  
Switch Module  
Limb  
Outgoing Line  
Limb  
Right Motor Housing  
Screw 4 x 16  
Screw 4 x 20  
NOTE: Some parts are listed and shown for illustration purposes only, and are not avail-  
able individually as replacement parts.  
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ASSEMBLY DIAGRAM  
SKU 03670  
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