OWNER'S OPERATING MANUAL
3/8 in. (10 mm) Electric Drill – D28VSR
DOUBLE INSULATED
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SPECIFICATIONS:
Chuck Capacity
Switch
1/16 in. (1.6 mm) To 3/8 in. (10 mm)
Adjustable Variable Speed/Reversible
120 volts, 60 Hz, AC
3.0 Amperes
Rating
Input
No Load Speed
Horsepower
0-1300 RPM
1/3
THANK YOU FOR BUYING A RYOBI DRILL.
Your new drill has been engineered and manufactured to Ryobi's high standard for dependability, ease of operation, and
operator safety. Properly cared for, it will give you years of rugged, trouble-free performance.
CAUTION: Carefully read through this entire owner's manual before using your new drill. Pay close attention to
the Rules for Safe Operation, Warnings, and Cautions. If you use your drill properly and only for what it is intended, you will
enjoy years of safe, reliable service.
Thank you again for buying Ryobi tools.
SAVE THIS MANUAL FOR FUTURE REFERENCE
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READ ALL INSTRUCTIONS
1. KNOW YOUR POWER TOOL. Read owner's
manual carefully. Learn its applications and
limitations as well as the specific potential
hazards related to this tool.
2. GUARD AGAINST ELECTRICAL SHOCK by
preventing body contact with grounded
surfaces. For example: Pipes, radiators,
ranges, refrigerator enclosures.
16. DON'T OVERREACH. Keep proper footing
and balance at all times. Do not use on a
ladder or unstable support.
17. MAINTAIN TOOLS WITH CARE. Keep tools
sharp at all times, and clean for best and
safest performance. Follow instructions for
lubricating and changing accessories.
18. DISCONNECT TOOLS. When not in use,
before servicing, or when changing
attachments, blades, bits, cutters, etc., all tools
should be disconnected from power supply.
3. KEEP GUARDS IN PLACE and in working
order.
4. KEEP WORK AREA CLEAN. Cluttered areas
and benches invite accidents.
19. REMOVE ADJUSTING KEYS AND
WRENCHES. Form habit of checking to see
that keys and adjusting wrenches are removed
from tool before turning it on.
5. AVOID DANGEROUS ENVIRONMENT. Don't
use power tool in damp or wet locations or
expose to rain. Keep work area well lit.
20. AVOID ACCIDENTAL STARTING. Don't
carry plugged-in tools with finger on switch.
Be sure switch is off when plugging in.
6. 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.
7. STORE IDLE TOOLS. When not in use tools
should be stored in a dry and high or locked-
up place - out of the reach of children.
21. MAKE SURE YOUR EXTENSION CORD IS
IN GOOD CONDITION. When using an
extension cord, be sure to use one 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 gage size (A.W.G.) of at
least 16 is recommended for an extension
cord 100 feet or less in length. A cord
exceeding 100 feet is not recommended. If in
doubt, use the next heavier gage. The smaller
the gage number, the heavier the cord.
8. DON'T FORCE TOOL. It will do the job better
and safer at the rate for which it was designed.
9. USE RIGHT TOOL. Don't force small tool or
attachment to do the job of a heavy duty tool.
Don't use tool for purpose not intended - for
example - A circular saw should never be
used for cutting tree limbs or logs.
10. WEAR PROPER APPAREL. Do not wear
loose clothing or jewelry that can get caught
in the tool's moving parts and cause personal
injury. Rubber gloves and nonskid footwear
are recommended when working outdoors.
Wear protective hair covering to contain long
hair and keep it from being drawn into nearby
air vents.
22. OUTDOOR USE EXTENSION CORDS.
When tool is used outdoors, use only
extension cords suitable for use outdoors.
Outdoor approved cords are marked with
the suffix W-A, for example - SJTW-A or
SJOW-A.
23. KEEP BITS CLEAN AND SHARP. Sharp bits
minimize stalling and kickback.
11. ALWAYS WEAR SAFETY GLASSES.
Everyday eyeglasses have only impact-
resistant lenses; they are NOT safety glasses.
24. KEEP HANDS AWAY FROM DRILLING
AREA. Keep hands away from bits. Do not
reach underneath work while bit is rotating. Do
not attempt to remove material while bit is
rotating.
12. PROTECT YOUR LUNGS. Wear a face or
dust mask if operation is dusty.
13. PROTECT YOUR HEARING. Wear hearing
protection during extended periods of
operation.
25. NEVER USE IN AN EXPLOSIVE ATMO-
SPHERE. Normal sparking of the motor could
ignite fumes.
14. DON'T ABUSE CORD. Never carry tool by
cord or yank it to disconnect from receptacle.
Keep cord from heat, oil and sharp edges.
15. SECURE WORK. Use clamps or a vise to
hold work. Both hands are needed to operate
the tool.
26. INSPECT TOOL CORDS PERIODICALLY
and if damaged, have repaired at your nearest
authorized service center. Stay constantly
aware of cord location.
27. INSPECT EXTENSION CORDS PERIODI-
CALLY and replace if damaged.
Page 3
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RULES FOR SAFE OPERATION (Continued)
28. KEEP HANDLES 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 strong solvents to clean your tool.
34. DRUGS, ALCOHOL, MEDICATION. Do not
operate tool while under the influence of drugs,
alcohol, or any medication.
35. WHEN SERVICING USE ONLY IDENTICAL
RYOBI REPLACEMENT PARTS.
29. STAY ALERT. Watch what you are doing
and use common sense. Do not operate tool
when you are tired. Do not rush.
36. POLARIZED PLUGS. To reduce the risk of
electric shock, this tool has 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 the proper outlet. Do not
change the plug in any way.
30. 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 should
be properly repaired or replaced by an
authorized service center unless indicated
elsewhere in this instruction manual.
37. SAVE THESE INSTRUCTIONS. Review them
frequently and use them to instruct others
who may use this tool. 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:
31. DO NOT USE TOOL IF SWITCH DOES NOT
TURN IT ON AND OFF. Have defective
switches replaced by an authorized service
center.
32. DRILLING INTO ELECTRICAL WIRING IN
WALLS CAN CAUSE DRILL BIT AND
CHUCK TO BECOME ELECTRICALLY LIFE.
Do not touch the chuck or metal housing when
drilling into a wall; grasp only the insulated
handle(s) provided on the tool.
• 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.
33. INSPECT FOR and remove all nails from
lumber before drilling.
WARNING:
WEAR YOUR
The operation of any drill 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.
SAFETY
GLASSES
FORESIGHITS BETTER
THAN NO SIGHT
Look for this symbol to point out important safety precautions.
It means attention!!! Your safety is involved.
Page 4
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OPERATION
APPLICATIONS
KNOW YOUR ELECTRIC DRILL
See Figure 1.
(Use only for the purposes listed below)
Before attempting to use your drill, familiarize yourself with
all operating features and safety requirements.
1. Drilling in wood.
2. Drilling in ceramics, plastics, fiberglass, and laminates.
3. Drilling in both hard and soft metals.
4. Using driving accessories, such as driving screws with
screwdriver bits.
WARNING:
If any parts are missing do not operate your drill until the
missing parts are replaced. Failure to do so could result
in possible serious injury.
5. Mixing paints.
KEYLESS CHUCK
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LOCK-ON
BUTTON
VARIABLE SPEED
CONTROL SELECTOR
LOCK-ON
BUTTON
FORWARD-REVERSE
LEVER
SWITCH
TRIGGER
VARIABLE SPEED
CONTROL SELECTOR
SWITCH TRIGGER
Fig. 1
ELECTRICAL CONNECTION
Your drill has a precision built Ryobi electric motor. It should
be connected to a power supply that is 120 volts, 60 Hz
only. Do not operate this tool on direct current (DC). A
voltage drop of more than 10 percent will cause a loss of
power and the motor will overheat. If this tool does not
operate when plugged into an outlet, double-check the
power supply.
WARNING:
Do not allow familiarity with your drill to make you care-
less. Remember that a careless fraction of second is
sufficient to inflict severe injury.
Page 5
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OPERATION
KEYLESS CHUCK
See Figure 2.
KEYLESS
CHUCK BODY
UNLOCK
(RELEASE)
Your new drill has a keyless chuck. As the name implies, you
can hand tighten or release drill bits in the chuck jaws. Grasp
and hold the collar of the chuck with one hand. Rotate the
chuck body with your other hand. The arrows on the chuck
indicate which direction to rotate the chuck body in order to
LOCK (tighten) or UNLOCK (release) the drill bit.
CHUCK
JAWS
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NOTE: Closing chuck jaws completely without a bit inserted
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could cause premature failure of the chuck.
WARNING:
DRILL BIT
Do not hold chuck body with one hand and use power of
the drill to tighten chuck jaws on drill bits. Chuck body
could slip in your hand or your hand could slip and come
in contact with rotating drill bit. This could cause an
accident resulting in serious personal injury.
LOCK
(TIGHTEN)
KEYLESS
CHUCK COLLAR
Fig. 2
SWITCH
See Figure 3.
LOCK-ON BUTTON
To turn your drill ON, depress the switch trigger. Release
switch trigger to turn your drill OFF.
LOCK-ON BUTTON
See Figure 3.
Your drill is equipped with a "lock-on" feature, which is
convenient when continuous drilling for extended periods of
timeisrequired. Tolock-on, depresstheswitchtrigger, push
in and hold the lock-on button located on the side of the
handle, then release switch trigger. Release lock-on button
and your drill will continue running.
To release the lock, depress the switch trigger and release
it.
If you have the "lock-on" feature engaged during use and
your drill becomes disconnected from power supply, disen-
gage the "lock-on" feature immediately.
SWITCH TRIGGER
Fig. 3
WARNING:
Before connecting your drill to power supply source,
always check to be sure it is not in “lock-on” position
(depress and release switch trigger). Failure to do so
could result in accidental starting of your drill resulting in
possible serious injury. Also, do not lock the trigger on
jobs where your drill may need to be stopped suddenly.
Page 6
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OPERATION
REVERSIBLE
See Figure 4.
FORWARD
Your drill has the feature of being reversible. The direction of
chuck rotation is controlled by a lever located above the
switch trigger. With your drill held in normal operating posi-
tion, thedirectionofrotationlevershouldbepositionedtothe
left of the switch for drilling operation. The direction of
rotationisreversedwhentheleveristotherightoftheswitch.
FORWARD-REVERSE
LEVER
The design of the switch will not permit changing the
direction of rotation while the drill is running. Release
the switch trigger and allow the drill to stop before
changing its direction.
NOTE: Your drill will not run unless switch lever is
pushed fully to the left or right.
VARIABLE SPEED
See Figure 5.
REVERSE
Your drill has a variable speed control selector designed to
allow operator control and adjustment of speed and torque
limits. The speed and torque of your drill can be increased or
decreased by rotating the variable speed control selector in
the direction of the arrows shown in figure 5.
Fig. 4
NOTE: Hold your drill in normal operating position and turn
the variable speed control selector clockwise to increase the
speed and torque of your drill. Turn counterclockwise to
decrease the speed and torque of your drill.
TO INCREASE SPEED
VARIABLE SPEED
CONTROL SELECTOR
If you desire to lock the switch on at a given speed, depress
the switch trigger, push in and hold the lock-on button, and
release the switch trigger. Next, adjust the variable speed
control selector until the desired speed is reached.
NOTE: If the variable speed control selector is fully
turned in the counterclockwise direction (zero setting)
your drill may not run.
If you desire not to use the variable speed control
selector, turn it in the full clockwise direction. This will
allow the speed of your drill to be fully controlled by the
amount of switch trigger depression.
TO DECREASE SPEED
Avoid running your drill at low speeds for extended periods of
time. Running at low speeds under constant usage may
cause your drill to become overheated. If this occurs, cool
your drill by running it without a load and at full speed.
Fig. 5
The following guidelines may be used in determining correct
speed for various applications:
LOW speed is ideal when minimum speed and power is
required. For example: starting holes without center punch-
ing, driving screws, mixing paint, and drilling in ceramics.
MEDIUM speed is suitable for drilling hard metals, plastics,
and laminates.
HIGH speed produces best results when maximum power is
required. For example: drilling in wood; soft metals such as
aluminum, brass, and copper; and when using driving acces-
sories.
Page 7
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OPERATION
WARNING:
KEYLESS
CHUCK JAWS
Your drill should never be connected to power supply
when you are assembling parts, making adjustments,
installing or removing drill bits, or when not in use.
Disconnecting your drill will prevent accidental starting
that could cause serious injury.
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TO INSTALL BITS
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See Figure 6.
DRILL BIT
1. UNPLUG YOUR DRILL.
WARNING:
KEYLESS CHUCK
Failure to unplug your drill could result in accidental
starting causing serious injury.
RIGHT
Fig. 6
2. Open or close the chuck jaws to a point where the
opening is slightly larger than the drill bit you intend to
use. Also, raise the front of your drill slightly to keep the
drill bits from falling out of the chuck jaws.
3. Insert drill bit into chuck the full length of the jaws.
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WARNING:
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Do not insert drill bit into chuck jaws and tighten as shown in
figure 7. This could cause drill bit to be thrown from your drill
resulting in possible serious personal injury or damage to your
chuck.
4. Tighten the chuck jaws securely on drill bit.
5. To tighten the chuck jaws on drill bit; grasp and hold the
collar of the chuck with one hand, while rotating the
chuck body with your other hand.
Fig. 7
WRONG
NOTE: Rotate the chuck body in the direction of the
arrow marked LOCK to tighten chuck jaws. Do not use
a wrench to tighten or loosen the chuck jaws.
TO REMOVE BITS
1. UNPLUG YOUR DRILL.
WARNING:
Failure to unplug your drill could result in accidental
starting causing serious injury.
2. Loosen the chuck jaws from drill bit.
3. To loosen: grasp and hold the collar of the chuck with
one hand, while rotating chuck body with your other
hand.
NOTE: Rotate chuck body in the direction of the arrow
marked UNLOCK to loosen chuck jaws. Do not use a
wrench to tighten or loosen the chuck jaws.
4. Remove drill bit from chuck jaws.
Page 8
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OPERATION
WARNING:
Always wear safety goggles or safety glasses with side
shields when operating drill. Failure to do so could result
indust,shavings,orlooseparticlesbeingthrownintoyour
eyes, resulting in possible serious injury.
DRILLING
See Figure 8.
1. Depress and release the switch trigger to be sure your
drill is in OFF position before connecting it to power
supply.
2. Check the direction of rotation lever for correct setting
(forward or reverse). See Figure 4, Page 7.
3. Secure the material to be drilled in a vise or with
clamps to keep it from turning as the drill bit rotates.
4. Plug your drill into power supply source.
5. Hold your drill firmly and place the bit at the point to be
drilled.
6. Depress the switch trigger to start your drill. Do not
lock the switch ON for jobs where your drill may need
to be stopped suddenly.
7. Move the drill bit into the workpiece applying only
enough pressure to keep the bit cutting. Do not force
your drill or apply side pressure to elongate a hole. Let
your drill and bit do the work. See Figure 8.
Fig. 8
WARNING:
Be prepared for binding or breakthrough. When these
situations occur, drill has a tendency to grab and kick in
the opposite direction and could cause loss of control
when breaking through material. If not prepared, this loss
of control can result in possible serious injury.
When drilling hard, smooth surfaces use a center punch to
mark the desired hole location. This will prevent the drill bit
from slipping off center as the hole is started. However, the
variable speed feature allows starting holes without center
punching if desired. To accomplish this, operate your drill at
a low speed until the hole is started.
When drilling metals use a light oil on the drill bit to keep it
from overheating. The oil will prolong the life of the bit and
increase the drilling action.
If the bit jams in the workpiece or if your drill stalls, stop the
tool immediately. Remove the bit from the workpiece and
determine the reason for jamming.
Page 9
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OPERATION
CHUCK REMOVAL
See Figure 9.
Whenever necessary to remove the chuck for replacement,
etc., use the following procedure for chuck removal:
MALLET
1. UNPLUG YOUR DRILL.
WARNING:
Failure to unplug your drill could result in accidental
starting causing serious injury.
KEYLESS
CHUCK JAWS
2. Open chuck jaws.
3. Insert a 5/16 inch or larger hex key wrench (Allen
wrench) into the chuck of your drill and tighten the
chuck jaws securely.
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4. Tap sharply with a mallet in a counterclockwise direc-
tion.
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5. This will loosen the chuck on the spindle.
6. It can now be unscrewed by hand. See Figure 9.
7. Open the chuck jaws and remove hex key wrench.
HEX KEY WRENCH
(ALLEN WRENCH)
KEYLESS
CHUCK
TO RETIGHTEN A LOOSE CHUCK
The chuck may at times become loose on the spindle and
develop a wobble. To tighten, follow these steps:
CHUCK REMOVAL
Fig. 9
1. UNPLUG YOUR DRILL.
WARNING:
Failure to unplug your drill could result in accidental
starting causing serious injury.
2. Insert hex key wrench into chuck and tighten chuck
jaws securely.
3. Tap Allen wrench sharply with a mallet in a clockwise
direction.
4. This will tighten the chuck on the spindle.
5. Open the chuck jaws and remove hex key wrench.
Page 10
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MAINTENANCE
When electric tools are used on fiberglass boats, sports
cars, wallboard, spackling compounds, or plaster, it has
been found that they are subject to accelerated wear and
possible premature failure, as the fiberglass chips and
grindings are highly abrasive to bearings, brushes,
commutators, etc. Consequently it is not recommended that
this tool be used for extended work on any fiberglass material,
wallboard, spackling compounds, or plaster. During any use
on fiberglass it is extremely important that the tool is cleaned
frequently by blowing with an air jet.
WARNING:
When servicing use only identical Ryobi replacement
parts. Use of any other parts may create a hazard or
cause product damage.
GENERAL
Avoid using solvents when cleaning plastic parts. Most plas-
ticsaresusceptibletodamagefromvarioustypesofcommer-
cial solvents and may be damaged by their use. Use clean
cloths to remove dirt, carbon dust, etc.
WARNING:
Always wear safety goggles or safety glasses with side
shieldsduringpowertooloperationorwhenblowingdust.
If operation is dusty, also wear a dust mask.
WARNING:
Do not at any time let brake fluids, gasoline, petroleum-
based products, penetrating oils, etc. come in contact
with plastic parts. They contain chemicals that can
damage, weaken, or destroy plastic.
EXTENSION CORDS
Theuseofanyextensioncordwillcausesomelossofpower.
To keep the loss to a minimum and to prevent tool from
overheating, use an extension cord that is heavy enough to
carry the current the tool will draw.
WARNING:
Check extension cords before each use. If damaged
replaceimmediately. Neverusetoolwithadamagedcord
since touching the damaged area could cause electrical
shock resulting in serious injury.
A wire gage size (A.W.G.) of at least 16 is recommended for
an extension cord 100 feet or less in length. When working
outdoors, use an extension cord that is suitable for outdoor
use. The cord's jacket will be marked WA.
WARNING:
Donotusethisproductasacomponentofotherproducts.
Also, do not use attachments or accessories not
recommended for use with this product. Any such use
could result in possible serious personal injury.
CAUTION:
Keep extension cords away from the drilling area and
position the cord so that it will not get caught on lumber,
tools, etc., during drilling operation.
LUBRICATION
All of the bearings in this tool are lubricated with a sufficient
amount of high grade lubricant for the life of the unit under
normaloperatingconditions. Therefore, nofurtherlubrication
is required.
Page 11
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OWNER'S OPERATING MANUAL
3/8 in. (10 mm) Electric Drill – D28VSR
DOUBLE INSULATED
• SERVICE
Now that you have purchased your tool, should a need ever exist for repair parts or service,
simply contact your nearest Ryobi Authorized Service Center. Be sure to provide all
pertinent facts when you call or visit. Please refer to the Service Center insert or call 1-800-
525-2579 in the United States or 1-800-265-6778 in Canada for your nearest Ryobi
complete list of Authorized Service Centers.
• MODEL NO. AND SERIAL NO.
The model number of this tool will be found on a plate attached to the motor housing.
Please record the model number and serial number in the space provided below.
• HOW TO ORDER REPAIR PARTS
WHEN ORDERING REPAIR PARTS,
ALWAYS GIVE THE FOLLOWING INFORMATION:
D28VSR
• MODEL NUMBER
• SERIAL NUMBER
RYOBI TECHNOLOGIES INC.
RYOBI TECHNOLOGIES INC.
1428 Pearman Dairy Road
Anderson, SC 29625
Post Office Box 910
Cambridge, Ontario N1R 6K2
Phone 1-800-265-6778
Post Office Box 1207
Anderson, SC 29622-1207
Phone 1-800-525-2579
972000-300
11-00
Printed in U.S.A.
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