Ryobi DP121L User Manual
OPERATOR’S MANUAL
12 in. DIGITAL DRILL PRESS
DP121L
Your drill press has been engineered and manufactured to our high standard for dependability, ease of operation, and
operator safety. When properly cared for, it will give you years of rugged, trouble-free performance.
WARNING: To reduce the risk of injury, the user must read and understand the operator’s manual before using
this product.
Thank you for your purchase.
SAVE THIS MANUAL FOR FUTURE REFERENCE
TABLE OF CONTENTS
Introduction ..................................................................................................................................................................... 2
Warranty .......................................................................................................................................................................... 2
General Safety Rules ....................................................................................................................................................3-4
Specific Safety Rules ....................................................................................................................................................... 5
Symbols ........................................................................................................................................................................ 6-7
Electrical .......................................................................................................................................................................... 8
Glossary of Terms ............................................................................................................................................................ 9
Features ....................................................................................................................................................................10-11
Tools Needed ................................................................................................................................................................. 11
Loose Parts ................................................................................................................................................................... 12
Assembly ..................................................................................................................................................................13-17
Operation ..................................................................................................................................................................18-20
Adjustments ................................................................................................................................................................... 21
Maintenance .................................................................................................................................................................. 22
Troubleshooting ............................................................................................................................................................. 23
Parts Ordering / Service ...................................................................................................................................Back Page
INTRODUCTION
This tool has many features for making its use more pleasant and enjoyable. Safety, performance, and dependability have
been given top priority in the design of this product making it easy to maintain and operate.
WARRANTY
RYOBI® POWER TOOL - LIMITED TWO YEAR WARRANTY AND 30 DAY EXCHANGE POLICY
Techtronic Industries North America, Inc., warrants its RYOBI® power tools with the following conditions:
30-DAY EXCHANGE POLICY:
warranty or you may exchange any RYOBI® power tool which does not work properly due to defective workmanship or
materials by returning the power tool to the dealer from which it was purchased. To receive a replacement power tool
or requested warranty service, you must present proof of purchase and return all original equipment packaged with the
original product. The replacement power tool will be covered by the limited warranty for the balance of the two year period
from the date of the original purchase.
WHAT THIS WARRANTY COVERS:
tool for a period of two years from the date of purchase. With the exception of batteries, power tool accessories are
warranted for ninety (90) days. Batteries are warranted for two years.
HOW TO GET SERVICE: Just return the power tool, properly packaged and postage prepaid, to an Authorized Service
Center. You can obtain the location of the Service Center nearest you by contacting a service representative at Techtronic
Industries North America, Inc., P.O. Box 1207, Anderson, SC 29622-1207, by calling 1-800-525-2579 or by logging on to
www.ryobitools.com. When you request warranty service, you must also present proof of purchase documentation, which
includes the date of purchase (for example, a bill of sale). We will repair any faulty workmanship, and either repair or replace
any defective part, at our option. We will do so without any charge to you. We will complete the work in a reasonable time,
but, in any case, within ninety (90) days or less.
WHAT’S NOT COVERED: This warranty applies only to the original purchaser at retail and may not be transferred. This
warranty only covers defects arising under normal usage and does not cover any malfunction, failure or defects resulting
from misuse, abuse, neglect, alteration, modification or repairs by other than Authorized Service Centers. Techtronic
Industries North America, Inc. makes no warranties, representations or promises as to the quality or performance of its
power tools other than those specifically stated in this warranty.
ADDITIONAL LIMITATIONS: Any implied warranties granted under state law, including warranties of merchantability or
fitness for a particular purpose, are limited to two years from the date of purchase. Techtronic Industries North America,
Inc. is not responsible for direct, indirect, or incidental damages, so the above limitations and exclusions may not apply to
you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
During the first 30 days after date of purchase, you may either request service under this
This warranty covers all defects in workmanship or materials in your RYOBI® power
2
GENERAL SAFETY RULES
WARNING:
Read and understand all instructions. Failure to follow
all instructions listed below, may result in electric shock,
fire and/or serious personal injury.
READ ALL INSTRUCTIONS
KNOW YOUR POWER TOOL. Read the operator’s
manual carefully. Learn the applications and limitations
as well as the specific potential hazards related to this
tool.
GU A R D AG A I N S T ELE C T R I C AL SH O C K BY
PREVENTING BODY CONTACT WITH GROUNDED
SURFACES. For example: pipes, radiators, ranges, re-
frigerator enclosures.
KEEP GUARDS IN PLACE and in good working order.
REMOVE ADJUSTING KEYS AND WRENCHES. Form
habit of checking to see that keys and adjusting wrenches
are removed from tool before turning it on.
KEEP WORK AREA CLEAN. Cluttered areas and
benches invite accidents. DO NOT leave tools or pieces
of wood on the tool while it is in operation.
DO NOT USE IN DANGEROUS ENVIRONMENTS. Do
not use power tools in damp or wet locations or expose
to rain. Keep the work area well lit.
KEEP CHILDREN AND VISITORS AWAY. All visitors
should wear safety glasses and be kept a safe distance
from work area. Do not let visitors contact tool or extension cord while operating.
MAKE WORKSHOP CHILDPROOF with padlocks,
master switches, or by removing starter keys.
DON’T FORCE THE TOOL. It will do the job better and
safer at the feed rate for which it was designed.
USE THE RIGHT TOOL. Do not force the tool or attach-
ment to do a job for which it was not designed.
USE THE PROPER EXTENSION CORD. Make sure
your extension cord is in good condition. Use only a cord
heavy enough to carry the current your product will draw.
An undersized cord will cause a drop in line voltage
resulting in loss of power and overheating. A wire gauge
size (A.W.G.) of at least 16 is recommended for an
extension cord 50 feet or less in length. If in doubt, use
the next heavier gauge. The smaller the gauge number,
the heavier the cord.
DRESS PROPERLY. Do not wear loose clothing, gloves,
neckties, or jewelry that can get caught and draw you
into moving parts. Rubber gloves and nonskid footwear
are recommended when working outdoors. Also wear
protective hair covering to contain long hair.
ALWAYS WEAR SAFETY GLASSES WITH SIDE
SHIELDS. Everyday eyeglasses have only impact-
resistant lenses, they are NOT safety glasses.
SECURE WORK. Use clamps or a vise to hold work when
practical, it is safer than using your hand and frees both
hands to operate the tool.
DO NOT OVERREACH. Keep proper footing and balance
at all times.
MAINTAIN TOOLS WITH CARE. Keep tools sharp
and clean for better and safer performance. Follow
instructions for lubricating and changing accessories.
DISCONNECT TOOLS. When not in use, before
servicing, or when changing attachments, blades, bits,
cutters, etc., all tools should be disconnected from power
source.
AVOID ACCIDENTAL STARTING. Be sure switch is off
when plugging in any tool.
USE RECOMMENDED ACCESSORIES. Consult the
operator’s manual for recommended accessories. The
use of improper accessories may result in injury.
NEVER STAND ON TOOL. Serious injury could occur if
the tool is tipped or if the cutting tool is unintentionally
contacted.
CHECK DAMAGED PARTS. Before further use of the
tool, a guard or other part that is damaged should be
carefully checked to determine that it will operate properly
and perform its intended function. Check for alignment
of moving parts, binding of moving parts, breakage of
parts, mounting and any other conditions that may affect
its operation. A guard or other part that is damaged must
be properly repaired or replaced by an authorized service
center to avoid risk of personal injury.
USE THE RIGHT DIRECTION OF FEED. Feed work into
a blade, cutter, or sanding spindle against the direction
or rotation of the blade, cutter, or sanding spindle only.
NEVER LEAVE TOOL RUNNING UNATTENDED. TURN
THE POWER OFF. Don’t leave tool until it comes to a
complete stop.
PROTECT YOUR LUNGS. Wear a face or dust mask if
the cutting operation is dusty.
PROTECT YOUR HEARING. Wear hearing protection
during extended periods of operation.
DO NOT ABUSE CORD. Never carry tool by the cord or
yank it to disconnect from receptacle. Keep cord from
heat, oil, and sharp edges.
USE OUTDOOR EXTENSION CORDS. When tool is
used outdoors, use only extension cords with approved
ground connection that are intended for use outdoors
and so marked.
STAY ALERT AND EXERCISE CONTROL. Watch what
you are doing and use common sense. Do not operate
tool when you are tired. Do not rush.
3
GENERAL SAFETY RULES
DO NOT USE TOOL IF SWITCH DOES NOT TURN IT
ON AND OFF. Have defective switches replaced by an
authorized service center.
ALWAYS TURN SWITCH OFF before disconnecting it
to avoid accidental starting.
NEVER USE IN AN EXPLOSIVE ATMOSPHERE. Normal
sparking of the motor could ignite fumes.
INSPECT TOOL CORDS PERIODICALLY. If damaged,
have repaired by a qualified service technician at an
authorized service facility. The conductor with insulation
having an outer surface that is green with or without
yellow stripes is the equipment-grounding conductor. If
repair or replacement of the electric cord or plug is necessary, do not connect the equipment-grounding conductor
to a live terminal. Repair or replace a damaged or worn
cord immediately. Stay constantly aware of cord location
and keep it well away from the rotating blade.
INSPECT EXTENSION CORDS PERIODICALLY and
replace if damaged.
GROUND ALL TOOLS. If tool is equipped with three-
prong plug, it should be plugged into a three-hole electrical receptacle.
USE ONLY CORRECT ELECTRICAL DEVICES: 3-wire
extension cords that have 3-prong grounding plugs and
3-pole receptacles that accept the tool’s plug.
KEEP TOOL DRY, CLEAN, AND FREE FROM OIL AND
GREASE. Always use a clean cloth when cleaning. Never
use brake fluids, gasoline, petroleum-based products, or
any solvents to clean tool.
NEVER START A TOOL WHEN ANY ROTATING
CO M PO N ENT IS I N CO NTA C T W I TH T HE
WORKPIECE.
DO NOT OPERATE A TOOL WHILE UNDER THE
INFLUENCE OF DRUGS, ALCOHOL, OR ANY
MEDICATION.
WHEN SERVICING use only identical replacement parts.
Use of any other parts may create a hazard or cause
product damage.
USE ONLY RECOMMENDED ACCESSORIES listed in
this manual or addendums. Use of accessories that are
not listed may cause the risk of personal injury. Instructions for safe use of accessories are included with the
accessory.
4
SPECIFIC SAFETY RULES
KEEP BITS CLEAN AND SHARP. Sharp bits minimize
stalling. Dirty and dull bits may cause misalignment of
the material and possible operator injury.
KEEP HANDS AWAY FROM WORK AREA. Keep hands
away from the bit. Restrain any loose clothing, jewelry,
long hair, etc., that may become entangled in the bit.
ALWAYS CLAMP WORKPIECE AND BRACE AGAINST
COLUMN TO PREVENT ROTATION. Never use your
hand to hold the object while drilling.
USE RECOMMENDED SPEED FOR DRILL ACCES-
SORY AND WORKPIECE MATERIAL.
BE SURE DRILL BIT OR CUTTING TOOL IS SECURELY
LOCKED IN THE CHUCK.
BE SURE CHUCK KEY IS REMOVED from the chuck
before connecting to power source or turning power
ON.
ADJUST THE TABLE OR DEPTH STOP TO AVOID
DRILLING INTO THE TABLE. Shut off the power, remove
the drill bit, and clean the table before leaving machine.
AVOID DIRECT EYE EXPOSURE when using the laser
guide.
ALWAYS ENSURE THE LASER BEAM IS AIMED AT
A SURFACE WITHOUT REFLECTIVE PROPERTIES.
Shiny reflective materials are not suitable for laser use.
NEVER PLACE YOUR FINGERS IN A POSITION
WHERE THEY COULD CONTACT THE DRILL or other
cutting tool if the workpiece should unexpectedly shift.
NEVER PERFORM ANY OPERATION by moving the
head or table with respect to one another. Do not turn the
motor switch ON or start any operation before checking
that the head and table support lock handle is clamped
tight to column and head and table support collars are
correctly positioned.
BEFORE ENGAGING THE POWER SWITCH, MAKE
SURE THE BELT GUARD IS DOWN AND THE CHUCK
IS INSTALLED PROPERLY.
LOCK THE MOTOR SWITCH OFF WHEN LEAVING
THE DRILL PRESS. Do not perform layout, assembly, or
set-up work on the table while the cutting tool is rotating,
switched on, or connected to a power source.
SAVE THESE INSTRUCTIONS. Refer to them frequently
and use to instruct other users. If you loan someone this
tool, loan them these instructions also.
WARNING:
Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals
known to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are:
• lead from lead-based paints,
• crystalline silica from bricks and cement and other masonry products, and
• 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.
5
SYMBOLS
Some of the following symbols may be used on this tool. Please study them and learn their meaning. Proper interpretation of these symbols will allow you to operate the tool better and safer.
SYMBOL NAME DESIGNATION/EXPLANATION
V Volts
A Amperes
Hz Hertz
W Watt
min Minutes
Alternating Current
Direct Current
n
o
.../min
No Load Speed
Class II Construction
Per Minute
Wet Conditions Alert
Voltage
Current
Frequency (cycles per second)
Power
Time
Type of current
Type or a characteristic of current
Rotational speed, at no load
Double-insulated construction
Revolutions, strokes, surface speed, orbits etc., per minute
Do not expose to rain or use in damp locations.
Read The Operator’s Manual
Eye Protection
Safety Alert
No Hands Symbol
Hot Surface
To reduce the risk of injury, user must read and understand
operator’s manual before using this product.
Always wear safety goggles or safety glasses with side shields
and a full face shield when operating this product.
Precautions that involve your safety.
Failure to keep your hands away from the blade will result in
serious personal injury.
To reduce the risk of injury or damage, avoid contact with
any hot surface.
6
SYMBOLS
The following signal words and meanings are intended to explain the levels of risk associated with this
product.
SYMBOL SIGNAL MEANING
DANGER:
WARNING:
CAUTION:
CAUTION:
Indicates an imminently hazardous situation, which, if not avoided, will
result in death or serious injury.
Indicates a potentially hazardous situation, which, if not avoided, could
result in death or serious injury.
Indicates a potentially hazardous situation, which, if not avoided, may
result in minor or moderate injury.
(Without Safety Alert Symbol) Indicates a situation that may result in
property damage.
SERVICE
Servicing requires extreme care and knowledge and should
be performed only by a qualified service technician. For
service we suggest you return the product to your nearest
AUTHORIZED SERVICE CENTER for repair. When servicing, use only identical replacement parts.
WARNING:
WARNING:
To avoid serious personal injury, do not attempt to use
this product until you read thoroughly and understand
completely the operator’s manual. Save this operator’s
manual and review frequently for continuing safe operation and instructing others who may use this product.
The operation of any power tool can result in foreign objects being thrown into your eyes, which can
result in severe eye damage. Before beginning power tool operation, always wear safety goggles or
safety glasses with side shields and a full face shield when needed. We recommend Wide Vision Safety
Mask for use over eyeglasses or standard safety glasses with side shields. Always use eye protection
which is marked to comply with ANSI Z87.1.
SAVE THESE INSTRUCTIONS
7
ELECTRICAL
EXTENSION CORDS
Use only 3-wire extension cords that have 3-prong grounding plugs and 3-pole receptacles that accept the tool’s plug.
When using a power tool at a considerable distance from the
power source, use an extension cord heavy enough to carry
the current that the tool will draw. An undersized extension
cord will cause a drop in line voltage, resulting in a loss of
power and causing the motor to overheat. Use the chart
provided below to determine the minimum wire size required
in an extension cord. Only round jacketed cords listed by
Underwriter’s Laboratories (UL) should be used.
**Ampere rating (on tool faceplate)
0-2.0 2.1-3.4 3.5-5.0 5.1-7.0 7.1-12.0 12.1-16.0
Cord Length Wire Size (A.W.G.)
25' 16 16 16 16 14 14
50' 16 16 16 14 14 12
100' 16 16 14 12 10 —
**Used on 12 gauge - 20 amp circuit.
NOTE: AWG = American Wire Gauge
When working with the tool outdoors, use an extension cord
that is designed for outside use. This is indicated by the
letters “WA” on the cord's jacket.
Before using an extension cord, inspect it for loose or
exposed wires, and cut or worn insulation.
WARNING:
Keep the extension cord clear of the working area.
Position the cord so that it will not get caught on lumber,
tools, or other obstructions while you are working with
a power tool. Failure to do so can result in serious personal injury.
SPEED AND WIRING
The no-load speed of this tool is approximately 3,000 rpm.
This speed is not constant and decreases under a load
or with lower voltage. For voltage, the wiring in a shop
is as important as the motor’s horsepower rating. A line
intended only for lights cannot properly carry a power
tool motor. Wire that is heavy enough for a short distance
will be too light for a greater distance. A line that can
support one power tool may not be able to support two
or three tools.
GROUNDING INSTRUCTIONS
In the event of a malfunction or breakdown, grounding
provides a path of least resistance for electric current to
reduce the risk of electric shock. This tool is equipped with
an electric cord having an equipment-grounding conductor and a grounding plug. The plug must be plugged into a
matching outlet that is properly installed and grounded in
accordance with all local codes and ordinances.
Do not modify the plug provided. If it will not fit the outlet,
have the proper outlet installed by a qualified electrician.
Improper connection of the equipment-grounding conductor
can result in a risk of electric shock. The conductor with
insulation having an outer surface that is green with or without yellow stripes is the equipment-grounding conductor. If
repair or replacement of the electric cord or plug is necessary, do not connect the equipment-grounding conductor
to a live terminal.
Check with a qualified electrician or service personnel if the
grounding instructions are not completely understood, or if
in doubt as to whether the tool is properly grounded.
Repair or replace a damaged or worn cord immediately.
This tool is intended for use on a circuit that has an outlet
like the one shown in figure 1. It also has a grounding pin
like the one shown.
WARNING:
Check extension cords before each use. If damaged replace immediately. Never use tool with a damaged cord
since touching the damaged area could cause electrical
shock resulting in serious injury.
ELECTRICAL CONNECTION
This tool is powered by a precision built electric motor. It
should be connected to a power supply that is 120 volts,
60 Hz, AC only (normal household current). Do not operate
this tool on direct current (DC). A substantial voltage drop
will cause a loss of power and the motor will overheat. If the
tool does not operate when plugged into an outlet, double
check the power supply.
GroundinG
8
Pin
120V Grounded outlet
Fig. 1
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