Ryobi D45CK User manual

This new drill has been engineered and manufactured to Ryobi’s high standard for dependability, ease of operation,
and operator safety. When properly cared for, the drill 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 buying a Ryobi product.
OPERATOR'S MANUAL
3/8 in. Drill-Driver
D45CK
DOUBLE INSULATED
SAVE THIS MANUAL FOR FUTURE REFERENCE
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n Introduction ...................................................................................................................................................................... 2
n General Safety Rules.....................................................................................................................................................3-4
n Specific Safety Rules ....................................................................................................................................................... 4
n Symbols ........................................................................................................................................................................5-6
n Electrical........................................................................................................................................................................... 7
n Features.........................................................................................................................................................................8-9
n Operation.....................................................................................................................................................................9-13
n Maintenance................................................................................................................................................................... 14
n Exploded View and Repair Parts List............................................................................................................................. 15
n Parts Ordering / Service................................................................................................................................................. 16
TABLE OF CONTENTS
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.

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WARNING:
Read and understand all instructions. Failure to follow
all instructions listed below, may result in electric shock,
fire and/or serious personal injury.
SAVE THESE INSTRUCTIONS
WORK AREA
n Keep your work area clean and well lit. Cluttered
benches and dark areas invite accidents.
n Do not operate power tools in explosive atmospheres,
such as in the presence of flammable liquids, gases,
or dust. Power tools create sparks which may ignite the
dust or fumes.
n Keep bystanders, children, and visitors away while
operating a power tool. Distractions can cause you to
lose control.
ELECTRICAL SAFETY
n 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.
n 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 ground-
ed.
n Don’t expose power tools to rain or wet conditions.
Water entering a power tool will increase the risk of elec-
tric shock.
n Do not abuse the cord. Never use the cord to carry
the tools or pull the plug from an outlet. Keep cord
away from heat, oil, sharp edges, or moving parts.
Replace damaged cords immediately. Damaged cords
increase the risk of electric shock.
n When operating a power tool outside, use an outdoor
extension cord marked “W-A” or “W”. These cords
are rated for outdoor use and reduce the risk of electric
shock.
PERSONAL SAFETY
n Stay alert, watch what you are doing and use common
sense when operating a power tool. Do not use tool
while tired or under the influence of drugs, alcohol,
or medication. A moment of inattention while operating
power tools may result in serious personal injury.
n 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.
GENERAL SAFETY RULES
n Avoid accidental starting. Be sure switch is off before
plugging in. Carrying tools with your finger on the switch
or plugging in tools that have the switch on invites acci-
dents.
n Remove adjusting keys or wrenches before turning
the tool on. A wrench or a key that is left attached to a
rotating part of the tool may result in personal injury.
n Do not overreach. Keep proper footing and balance
at all times. Proper footing and balance enables better
control of the tool in unexpected situations.
n Use safety equipment. Always wear eye protection.
Dust mask, nonskid safety shoes, hard hat, or hearing
protection must be used for appropriate conditions.
n Do not wear loose clothing or jewelry. Contain long
hair. Loose clothes, jewelry, or long hair can be drawn
into air vents.
n Do not use on a ladder or unstable support. Stable
footing on a solid surface enables better control of the
tool in unexpected situations.
TOOL USE AND CARE
n Use clamps or other practical way to secure and sup-
port the workpiece to a stable platform. Holding the
work by hand or against your body is unstable and may
lead to loss of control.
n Do not force tool. Use the correct tool for your appli-
cation. The correct tool will do the job better and safer
at the rate for which it is designed.
n Do not use tool if switch does not turn it on or off.
Any tool that cannot be controlled with the switch is
dangerous and must be repaired.
n Disconnect the plug from power source before mak-
ing any adjustments, changing accessories, or storing
the tool. Such preventive safety measures reduce the
risk of starting the tool accidentally.
n Store idle tools out of the reach of children and other
untrained persons. Tools are dangerous in the hands of
untrained users.
n Maintain tools with care. Keep cutting tools sharp
and clean. Properly maintained tools with sharp cutting
edges are less likely to bind and are easier to control.
n 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 maintained tools.
n 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.
n Keep the tool and its handle dry, clean and free from
oil and grease. Always use a clean cloth when clean-
ing. Never use brake fluids, gasoline, petroleum-based
products, or any strong solvents to clean your tool. Fol-
lowing this rule will reduce the risk of loss of control and
deterioration of the enclosure plastic.

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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.
n Hold tool by insulated gripping surfaces when per-
forming an operation where the cutting tool may
contact hidden wiring or its own cord. Contact with a
“live” wire will make exposed metal parts of the cutting
tool “live” and shock the operator.
ADDITIONAL SAFETY RULES
n Know your power tool. Read operator’s manual care-
fully. Learn its applications and limitations, as well
as the specific potential hazards related to this tool.
Following this rule will reduce the risk of electric shock,
fire, or serious injury.
n Always wear safety glasses. Everyday eyeglasses
have only impact-resistant lenses; they are NOT
safety glasses. Following this rule will reduce the risk
of serious personal injury.
n Protect your lungs. Wear a face or dust mask if the
operation is dusty. Following this rule will reduce the
risk of serious personal injury.
n Protect your hearing. Wear hearing protection during
extended periods of operation. Following this rule will
reduce the risk of serious personal injury.
n Inspect tool cords periodically and, if damaged, have
repaired at your nearest Authorized Service Center.
Constantly stay aware of cord location. Following this
rule will reduce the risk of electric shock or fire.
n 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,
SERVICE
n Tool service must be performed only by qualified re-
pair personnel. Service or maintenance performed by
unqualified personnel may result in a risk of injury.
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. Following this rule will
reduce the risk of shock, fire, or serious injury.
n Do not abuse cord. Never carry the tool by the cord
or yank it to disconnect it from the receptacle. Keep
cord away from heat, oil, and sharp edges. Following
this rule will reduce the risk of electric shock or fire.
n 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. A wire gage size (A.W.G.) of at least 16 is recom-
mended for an extension cord 50 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. An undersized cord will
cause a drop in line voltage resulting in loss of power and
overheating.
n Inspect for and remove all nails from lumber before
using this tool. Following this rule will reduce the risk of
serious personal injury.
n Drugs, alcohol, medication. Do not operate tool while
under the influence of drugs, alcohol, or any medica-
tion. Following this rule will reduce the risk of electric
shock, fire, or serious personal injury.
n Save these instructions. Refer to them frequently and
use them to instruct others who may use this tool. If you
loan someone this tool, loan them these instructions
also.
n When servicing a tool, use only identical replacement
parts. Follow instructions in the Maintenance section
of this manual. Use of unauthorized parts or failure to fol-
low Maintenance Instructions may create a risk of shock
or injury.
GENERAL SAFETY RULES
SPECIFIC SAFETY RULES

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SYMBOLS
Some of the following symbols may be used on this tool. Please study them and learn their meaning. Proper interpreta-
tion of these symbols will allow you to operate the tool better and safer.
Read The Operator’s Manual
Safety Alert
No Hands Symbol
No Hands Symbol
No Hands Symbol
No Hands Symbol
SYMBOL NAME DESIGNATION/EXPLANATION
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.
To reduce the risk of injury, user must read and understand
operator’s manual before using this product.
Eye Protection 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.
Failure to keep your hands away from the blade will result in
serious personal injury.
Failure to keep your hands away from the blade will result in
serious personal injury.
Failure to keep your hands away from the blade will result in
serious personal injury.
Wet Conditions Alert
.../min Per Minute
Class II Construction
n
o
No Load Speed
Direct Current
Alternating Current
min Minutes
W Watt
Hz Hertz
A Amperes
V Volts
Hot Surface To reduce the risk of injury or damage, avoid contact with
any hot surface.

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WARNING:
WARNING:
To avoid serious personal injury, do not attempt to use this
product until you read thoroughly and understand com-
pletely the operator’s manual. Save this operator’s manual
and review frequently for continuing safe operation and
instructing others who may use this product.
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 servic-
ing, use only identical replacement parts.
SYMBOLS
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
The following signal words and meanings are intended to explain the levels of risk associated with this
product.
SYMBOL SIGNAL MEANING
DANGER: Indicates an imminently hazardous situation, which, if not avoided, will
result in death or serious injury.
WARNING: Indicates a potentially hazardous situation, which, if not avoided, could
result in death or serious injury.
CAUTION: Indicates a potentially hazardous situation, which, if not avoided, may
result in minor or moderate injury.
CAUTION: (Without Safety Alert Symbol) Indicates a situation that may result in
property damage.

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DOUBLE INSULATION
Double insulation is a concept in safety in electric power tools,
which eliminates the need for the usual three-wire grounded
power cord. All exposed metal parts are isolated from the
internal metal motor components with protecting insulation.
Double insulated tools do not need to be grounded.
WARNING:
The double insulated system is intended to protect the
user from shock resulting from a break in the tool's in-
ternal insulation. Observe all normal safety precautions
to avoid electrical shock.
Important: Servicing of a tool with double insulation requires
extreme care and knowledge of the system and should be
performed only by a qualified service technician. For service,
we suggest you return the tool to your nearest authorized
service center for repair. Always use original factory replace-
ment parts when servicing.
ELECTRICAL CONNECTION
This tool has 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 your tool does
not operate when plugged into an outlet, double-check the
power supply.
ELECTRICAL
WARNING:
Keep the extension cord clear of the working area. Po-
sition the cord so that it will not become entangled in the
rotating foam pad or 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.
WARNING:
Check extension cords before each use. If damaged re-
place immediately. Never use tool with a damaged cord
since touching the damaged area could cause electrical
shock resulting in serious injury.
EXTENSION CORDS
When using a power tool at a considerable distance from
a power source, be sure to use an extension cord that has
the capacity to handle the current the tool will draw. An un-
dersized cord will cause a drop in line voltage, resulting in
overheating and loss of power. Use the chart to determine
the minimum wire size required in an extension cord. Only
round jacketed cords listed by Underwriter’s Laboratories
(UL) should be used.
When working outdoors with a tool, use an extension cord
that is designed for outside use. This type of cord is desig-
nated with "WA" on the cord's jacket.
Before using any extension cord, inspect it for loose or
exposed wires and cut or worn insulation.
**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 gage - 20 amp circuit.

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KNOW YOUR DRILL-DRIVER
See Figure 1.
Before attempting to operate your drill-driver, familiarize
yourself with all operating features and safety require-
ments.
WARNING:
Carefully read through this entire operator's manual
before using your new drill-driver. Pay close attention
to the Safety Rules, Warnings and Cautions. If you
use your drill-driver properly and only for what it
is intended, you will enjoy years of safe, reliable
service.
WARNING:
Do not allow familiarity with your drill-driver to make
you careless. Remember that a careless fraction of
a second is sufficient to inflict severe injury.
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FEATURES
SWITCH
TRIGGER
DIRECTION OF
ROTATION SELECTOR
(FORWARD/REVERSE)
KEYLESS
CHUCK
BIT STORAGE AREA
TORQUE
ADJUSTMENT
RING
LOCK-ON
BUTTON
Fig. 1
SCREWDRIVER BITS
LEVEL LEVEL
KEYLESS CHUCK
Your drill-driver has a keyless chuck that allows you to
hand tighten or release drill bit in the chuck jaws.
SWITCH
To turn your drill-driver ON, depress the switch trigger.
Release switch trigger to turn your drill-driver OFF.
FORWARD/REVERSE SELECTOR
(DIRECTION OF ROTATION SELECTOR)
Your drill-driver has a forward/reverse selector located
above the switch trigger.
VARIABLE SPEED
This tool has a variable speed switch that delivers
higher speed with increased trigger pressure. Speed is
controlled by the amount of switch trigger depression.
BIT STORAGE
When not in use, bits provided with your drill-driver
can be placed in the storage area located in the motor
housing.
LEVEL
Two levels are recessed in the motor housing of your
drill-driver. They can be used to keep drill bits level
during both horizontal and vertical drilling operations.
CORD
Your drill-driver has a 10 foot cord that reduces the
need for an extension cord.
CORD
SPECIFICATIONS:
Chuck Capacity 1/16 in. to 3/8 in.
(1.6 mm to 10 mm)
Input 120 V, 60 Hz, AC only, 4.5 Amps.
Switch Variable Speed
No Load Speed 0-1000/min.
Clutch 24 Positions

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WARNING:
If any parts are missing, do not operate your drill-driver until the missing parts are replaced. Failure to do so
could result in possible serious personal injury.
APPLICATIONS
(Use only for the purpose listed below)
n Drilling in wood.
n Drilling in ceramics, plastics, fiberglass, and lami-
nates.
FEATURES
n Drilling in both hard and soft metals.
n Using driving accessories, such as driving screws
with screwdriver bits.
n Mixing paints.
OPERATION
LOCK-ON BUTTON
See Figure 2.
Your drill is equipped with a lock-on feature which is
convenient when continuous drilling for extended periods
of time is required. To lock-on, depress the switch
trigger, 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.
If you have the lock-on feature engaged during use and
your drill becomes disconnected from power supply,
disengage the lock-on feature immediately.
VARIABLE SPEED
See Figure 2.
Your drill has a variable speed switch designed to allow
operator control of speed and torque limits. The speed
and torque of your drill can be increased by depressing
the switch trigger.
Note: Depress switch trigger all the way for maximum
speed and torque of your drill. Depress switch trigger
only part of the way for less speed and torque.
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.
The following guidelines may be used in determining
correct speed for various applications:
n Low speed is ideal when minimum speed and power
is required. For example, starting holes without center
punching, driving screws, mixing paint, and drilling
in ceramics.
n Medium speed is suitable for drilling hard metals,
plastics, and laminates.
n 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 accessories.
FORWARD/REVERSE
SELECTOR
SWITCH
TRIGGER
LOCK-ON
BUTTON
TO INCREASE SPEED,
DEPRESS SWITCH TRIGGER Fig. 2

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FORWARD
SELECTOR
Fig. 3
REVERSE
This tool has the feature of being reversible. The direction
of rotation is controlled by a selector located above the
switch trigger. With the drill held in normal operating
position, the direction of rotation selector should be
positioned to the left of the switch for drilling. The
drilling direction is reversed when the selector is to the
right of the switch.
CAUTION:
To prevent gear damage, always allow chuck to come
to a complete stop before changing the direction of
rotation.
To stop, release switch trigger and allow the chuck to
come to a complete stop.
WARNING:
Your drill should never be connected to power supply
when you are assembling parts, making adjustments,
installing or removing drill bits, cleaning, or when not
in use. Disconnecting your drill will prevent accidental
starting that could cause serious personal injury.
KEYLESS CHUCK
See Figure 4.
A keyless chuck has been provided with your drill to allow
for easy installation and removal of bits. As the name
implies, you can hand tighten or release drill bits in the
chuck jaws. Arrows on the chuck indicate which direc-
tion to rotate the chuck body in order to LOCK (tighten)
or UNLOCK (release) the chuck jaws. Grasp and hold
the collar of the chuck with one hand. Rotate the chuck
body with your other hand. Insert drill bit straight into the
chuck the full length of the jaws, and tighten securely by
rotating the chuck body in a clockwise direction.
WARNING:
Do not hold chuck body with one hand and use
power of the drill to tighten chuck jaws on drill bit.
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.
INSTALLING BITS
See Figure 4.
n Unplug your drill.
WARNING:
Failure to unplug your drill could result in accidental
starting causing serious injury.
n Open or close the chuck jaws to a point where the
opening is slightly larger than the bit size you intend
to use. Also, raise the front of your drill slightly to
keep the bit from falling out of the chuck jaws.
n Insert drill bit straight into chuck the full length of
the jaws as shown in figure 4.
n Tighten the chuck jaws on drill bit.
n 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.
Note: Rotate the chuck body in the direction of the
arrow marked LOCK to tighten chuck jaws.
n Do not use a wrench to tighten or loosen the chuck
jaws.
OPERATION
REVERSIBLE
See Figure 3. UNLOCK
(Release)
DRILL BIT
CHUCK
JAWS CHUCK BODY
LOCK
(Tighten)
Fig. 4
RIGHT
CHUCK
COLLAR

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ADJUSTABLE TORQUE CLUTCH
Your drill is equipped with an adjustable torque clutch for
driving different types of screws into different materials.
The proper setting depends on the type of material and
the size of screw you are using.
TO ADJUST TORQUE
n Identify the twenty four torque indicator settings
located on the front of your drill. See Figure 6.
n Rotate adjusting ring to the desired setting.
• 1 - 4 For driving small screws.
• 5 - 8 For driving screws into soft
material.
• 9 - 12 For driving screws into soft and
hard materials.
• 13 - 16 For driving screws in hard wood.
• 17 - 20 For driving large screws.
• 21 - For heavy drilling.
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REMOVING BITS
See Figure 4.
n Unplug your drill.
WARNING:
Failure to unplug your drill could result in accidental
starting causing serious injury.
n Loosen the chuck jaws from drill bit.
n To loosen: grasp and hold the collar with one hand,
while rotating chuck body with your other hand.
Note: Rotate chuck body in the direction of the ar-
row marked UNLOCK to loosen chuck jaws.
n Do not use a wrench to tighten or loosen the chuck
jaws.
n Remove drill bit from chuck jaws.
WARNING:
Make sure to insert drill bit straight into chuck jaws.
Do not insert drill bit into chuck jaws at an angle and
then tighten, as shown in Figure 5. This could cause
drill bit to be thrown from drill, resulting in possible
serious personal injury or damage to the chuck.
OPERATION
TO INCREASE
TORQUE
Fig. 6
Fig. 5
TO DECREASE
TORQUE ADJUSTING
RING
WRONG

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WARNING:
Be prepared for binding or bit breakthrough. When
these situations occur, drill has a tendency to grab
and kick opposite to the direction of rotation 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 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 workpiece or if the drill stalls, release
switch trigger immediately. Remove the bit from the
workpiece and determine the reason for jamming.
WARNING:
Always wear safety goggles or safety glasses with
side shields when operating your drill. Failure to do
so could result in dust, shavings, loose particles or
foreign objects being thrown into your eyes, causing
possible serious injury.
DRILLING
See Figure 8.
When drilling hard smooth surfaces use a center punch
to mark desired hole location. This will prevent the
drill bit from slipping off center as the hole is started.
However, the low speed feature allows starting holes
without center punching if desired. To accomplish this,
simply operate your drill at a low speed until the hole
is started.
The material to be drilled should be secured in a vise
or with clamps to keep it from turning as the drill bit
rotates.
Hold tool firmly and place the bit at the point to be
drilled. Depress the switch trigger to start tool.
Move the drill bit into the workpiece applying only
enough pressure to keep the bit cutting. Do not force
or apply side pressure to elongate a hole.
OPERATION
BIT STORAGE
See Figure 7.
When not in use, bits provided with your drill can be
placed in the storage area located on the bottom of
your drill as shown in figure 7.
SCREWDRIVER
BITS
BIT
STORAGE AREA
Fig. 7
LEVEL
Fig. 8
LEVEL DRILLING
See Figures 8 and 9.
Two levels are recessed in the motor housing of your
drill-driver. One is located on top, while the other is
located on the end. They can be used to keep drill bits
level during both horizontal and vertical drilling opera-
tions.
LEVEL
Fig. 9

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CHUCK REMOVAL
See Figures 10, 11, and 12.
Whenever necessary to remove the chuck for replace-
ment, etc. use the following procedure for chuck re-
moval:
n Unplug your drill.
n Rotate torque adjusting ring to the maximum torque
setting.
WARNING:
Failure to unplug your drill could result in accidental
starting causing serious injury.
n Open chuck jaws.
n Insert a 5/16 in. or larger hex key into the chuck of
your drill and tighten chuck jaws securely.
n Tap the hex key sharply with a mallet in a clockwise
direction. See Figure 10. This will loosen the screw in
the chuck for easy removal.
n Open the chuck jaws and remove hex key. Remove
the chuck screw by turning it in a clockwise direc-
tion. See Figure 11.
Note: The chuck screw has left hand threads.
n Insert hex key into chuck and tighten chuck jaws
securely. Tap sharply with a mallet in a counter-
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clockwise direction. This will loosen the chuck on
the spindle. It can now be unscrewed by hand. See
Figure 12.
TO RETIGHTEN A LOOSE CHUCK
The chuck may at times become loose on the spindle and
develop a wobble. Also, the chuck screw may become
loose causing the chuck jaws to bind and prevent them
from closing. To tighten, follow these steps:
nUnplug your drill.
WARNING:
Failure to unplug your drill could result in accidental
starting causing serious injury.
n Insert hex key into chuck and tighten chuck jaws
securely. Tap hex key sharply with a mallet in a
clockwise direction. This will tighten the chuck on
the spindle. See Figure 10.
n Open the chuck jaws and remove the hex key.
n Tighten the chuck screw.
Note: The chuck screw has left hand threads.
OPERATION
Fig. 10
Fig. 11
Fig. 12
SCREWDRIVER
HEX KEY
TORQUE
ADJUSTING
RING
KEYLESS
CHUCK
MALLET
CHUCK
JAWS
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Electric tools used on fiberglass material, wallboard,
spackling compounds, or plaster are subject to accel-
erated wear and possible premature failure because
the fiberglass chips and grindings are highly abrasive to
bearings, brushes, commutators, etc. Consequently, we
do not recommended using this tool for extended work
on these types of materials. However, if you do work
with any of these materials, it is extremely important to
clean the tool using compressed air.
WARNING:
Always wear safety goggles or safety glasses with
side shields during power tool operation or when
blowing dust. If operation is dusty, also wear a dust
mask.
LUBRICATION
All of the bearings in this tool are lubricated with a suf-
ficient amount of high grade lubricant for the life of the
unit under normal operating conditions. Therefore, no
further lubrication is required.
WARNING:
When servicing use only identical Ryobi replacement
parts. Use of any other parts may create a hazard
or cause product damage.
WARNING:
The tool should never be connected to a power
supply when you are assembling parts, making
adjustments, cleaning, performing maintenance,
or when the tool is not in use. Disconnecting the
tool will prevent accidental starting that could cause
serious injury.
GENERAL
Use clean cloths to remove dirt, carbon dust, etc.
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.
MAINTENANCE

15
RYOBI 3/8 in. (10 mm) DRILL-DRIVER – MODEL NO. D45CK
The model number will be found on a plate attached to the motor housing. Always mention the
model number in all correspondence regarding your DRILL-DRIVER or when ordering parts.
SEE BACK PAGE FOR PARTS ORDERING INSTRUCTIONS
NOTE: The assembly shown represents an important part of the Double Insulated System. To avoid the
possibility of alteration or damage to the system, service should be performed by your nearest authorized
service center.
SEE NOTE
PARTS LIST
Key No. Part No. Description Quan.
1 6612001 Chuck Screw ................................................................................ 1
2 940214077 Data Plate ..................................................................................... 1
3 940185030 Logo Plate..................................................................................... 1
4 690032011 3/8 in. (10 mm) Chuck................................................................... 1
983000-473 Operator’s Manual

983000-473
3-04
• 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 call 1-800-525-2579 for
your nearest Ryobi Authorized Service Center. You can also check our website at
www.ryobitools.com for a 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:
• MODEL NUMBER
• SERIAL NUMBER
OPERATOR'S MANUAL
3/8 in. Drill-Driver
D45CK
DOUBLE INSULATED
D45CK
RYOBI TECHNOLOGIES, INC.
1428 Pearman Dairy Road, Anderson, SC 29625
Post Office Box 1207, Anderson, SC 29622-1207
Phone [phone]
www.ryobitools.com