master mechanic 151997 User manual

20V 3/8" COMPACT CORDLESS DRILL/DRIVER
151997
Owner’s Manual
PRODUCT SPECIFICATIONS
DRILL
Chuck speeds:
0–350 / 0–1,400 RPM (no load)
Battery:
20V Li-ion/18V Ni-Cad
Clutch positions:
23 plus drilling mode
Keyless chuck:
3/8" single sleeve
Weight:
4 lb. 7 oz. (2.0 kg)
BATTERY & CHARGER
Battery voltage:
20V Li-ion (Maximum charged battery voltage, measured
without load, is 20V with a nominal value of 18V)
18V Ni-Cad
Charger:
1 Hour, Class 2
Will charge battery types:
20V Li-ion #153928
18V Ni-Cad #134458
Charger input:
120V AC, 60 Hz, 60W
Charger output:
18V DC, 2 AMP for Ni-Cad batteries
20V DC, 2 AMP for Li-ion batteries
Need Assistance?
Call us on our toll free customer support line:
1-866-349-8665 Monday –Friday from 9am to 5pm
Eastern Standard Time
Technical questions
Replacement parts
Parts missing from package
Manufactured For and Distributed By
True Value® Company, Chicago, IL
©2012 True Value Company
Made in China

2
Product specifications ………….…………………………………………………….
1
Table of contents ……………………………………………………………………...
2
General safety warnings ……………………………………………………………..
3–4
Eye, ear & lung protection ……………………………………………………………
3–4
Electrical safety ……………………………………………………………………….
4
Power tool safety ……………………………………………………………………...
5–6
General safety rules …………………………………………………………………..
5
Work area ………………………………………………………………….…………..
5
Electrical safety ……………………………………………………………………….
5
Personal safety ………………………………………………………………………..
5–6
Power tool use and care .…………………………………………………………….
6
Battery tool use and care …………………………………………………………….
7
Service …………………………………………………………………………………
7
Specific safety rules …………………………………………………………………..
8
Battery & charger safety ………………………………………………………….….
9–10
Battery pack recycling ………………………………………………………………..
10
Symbols ………………………………………………………………………………..
11
Know your cordless drill ……………………………………………………………..
12
Accessories & contents ………………………………………………………………
13
Assembly and operating ……………………………………………………………..
14–25
Charging the battery pack ……………………………………………………………
14
Installing a battery in the drill ………………………………………………………..
15
On-board screwdriver-bit storage …………………………………………………...
15
LED worklight ………………………………………………………………………….
15
Adjusting the torque ………..…………………………………………………………
15–16
Forward/reverse switch ………………………………………………………………
16
Two speed transmission ……………………………………………………………..
17
Variable-speed trigger switch ………………………………………………………..
17
Installing drill bits ……………………………………………………………………...
17–19
Removing bits …………………………………………………………………………
19
Bubble levels …………………………………………………………………………..
19
Drilling ………………………………………………………………………………….
21–22
Driving screws …………………………………………………………………………
22–23
Removing the chuck ………………………………………………………………….
23–24
Retightening a loose chuck ………………………………………………………….
24–25
Maintenance …………………………………………………………………………..
25
Exploded view …………………………………………………………………………
26
Parts list ………………………………………………………………………………..
27–28
Warranty ……………………………………………………………………….………
29
TABLE OF CONTENTS

3
EYE, EAR & LUNG PROTECTION
This instruction manual includes the following:
General Safety Rules
Specific Safety Rules and Symbols
Functional Description
Assembly
Operation
Maintenance
Accessories
!
ALWAYS WEAR EYE PROTECTION THAT CONFORMS WITH CSA
REQUIREMENTS or ANSI SAFETY STANDARD Z87.1
FLYING DEBRIS can cause permanent eye damage. Prescription
eyeglasses ARE NOT a replacement for proper eye protection.
WARNING: Non-compliant eyewear can cause serious injury if
broken during the operation of a power tool.
SAVE THESE INSTRUCTIONS FOR REFERENCE
WARNING: Use hearing protection, particularly during extended
periods of operation of the tool, or if the operation is noisy.
!
GENERAL SAFETY WARNINGS
WARNING: Before using this tool or any of its accessories, read this
manual and follow all Safety Rules and Operating Instructions. The important
precautions, safeguards and instructions appearing in this manual are not
meant to cover all possible situations. It must be understood that common
sense and caution are factors which cannot be built into the product.
!

4
ELECTRICAL SAFETY
OVERHEATING AND FIRE HAZARD
WARNING: To avoid electrical hazards, fire hazards or damage to the
tool, use proper circuit protection.
This tool is wired at the factory for 120V AC operation. It must be connected
to a 120V AC, 15 AMP circuit that is protected by a time-delayed fuse or
circuit breaker. To avoid shock or fire, replace power cord immediately if it
is worn, cut or damaged in any way.
GENERAL SAFETY WARNINGS
WEAR A DUST MASK THAT IS DESIGNED TO BE USED WHEN
OPERATING A POWER TOOL IN A DUSTY ENVIRONMENT.
WARNING: Dust that is created by power sanding, sawing, grinding,
drilling, and other construction activities may contain chemicals that are
known to cause cancer, birth defects, or other genetic abnormalities. These
chemicals include:
Lead from lead-based paints
Crystalline silica from bricks, cement, and other masonry products
Arsenic and chromium from chemically treated lumber
The level of risk from exposure to these chemicals varies, according to how
often this type of work is performed. In order to reduce exposure to these
chemicals, work in a well-ventilated area, and use approved safety
equipment, such as a dust mask that is specifically designed to filter out
microscopic particles.
!
WARNING: Ventilation openings in batteries and chargers must always be
open to allow cooling air to circulate freely. Air vents that are blocked,
restricted or covered may result in the battery or charger overheating.
Overheating may lead to damage to the tool or cause a fire, resulting in
possible serious injury.
!

5
WARNING: Read all safety warnings
and instructions. Failure to follow the
warnings and instructions may result in
electric shock, fire and/or serious injury.
Save all warnings and instructions for
future reference.
Work area safety
Keep work area clean and well lit.
Cluttered or dark areas invite accidents.
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.
Keep children and bystanders away
while operating a power tool.
Distractions can cause you to lose control.
Electrical safety
Power tool plugs must match the outlet.
Never modify the plug in any way. Do
not use any adapter plugs with earthed
(grounded) power tools. Unmodified
plugs and matching outlets will reduce risk
of electric shock.
Avoid body contact with earthed or
grounded surfaces such as pipes,
radiators, ranges and refrigerators.
There is an increased risk of electric shock
if your body is earthed or grounded.
Do not expose power tools to rain or
wet conditions. Water entering a power
tool will increase the risk of electric shock.
Do not abuse the cord. Never use the
cord for carrying, pulling or unplugging
the power tool. Keep cord away from
heat, oil, sharp edges or moving parts.
Damaged or entangled cords increase the
risk of electric shock.
When operating a power tool outdoors,
use an extension cord suitable for
outdoor use. Use of a cord suitable for
outdoor use reduces the risk of electric
shock.
If operating a power tool in a damp
location is unavoidable, use a residual
current device (RCD) protected supply.
Use of a ground fault circuit interrupter
(GFCI) reduces the risk of electric shock.
Personal safety
Stay alert, watch what you are doing
and use common sense when operating
a power tool. Do not use a power tool
while you are tired or under the
influence of drugs, alcohol or
medication. A moment of inattention while
operating power tools may result in serious
personal injury.
Use personal protective equipment.
Always wear eye protection. Protective
equipment such as dust mask, non-skid
safety shoes, hard hat, or hearing
protection used for appropriate conditions
will reduce personal injuries.
Prevent unintentional starting. Ensure
the switch is in the off-position before
connecting to power source and/or
battery pack, picking up or carrying the
tool. Carrying power tools with your finger
on the switch or energizing power tools
that have the switch on invites accidents.
POWER TOOL SAFETY
!

6
PERSONAL SAFETY –cont’d
Remove any adjusting key or wrench
before turning the power tool on. A
wrench or a key 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. This enables
better control of the power tool in
unexpected situations.
Dress properly. Do not wear loose
clothing or jewelry. Keep your hair,
clothing and gloves away from moving
parts. Loose clothes, jewelry or long hair
can be caught in moving parts.
If devices are provided for the
connection of dust extraction and
collection facilities, ensure these are
connected and properly used. Use of
dust collection can reduce dust-related
hazards.
Power tool use and care
Do not force the power tool. Use the
correct power tool for your application.
The correct power tool will do the job
better and safer at the rate for which it was
designed.
Do not use the power tool if the switch
does not turn it on and off. Any power
tool that cannot be controlled with the
switch is dangerous and must be repaired.
Disconnect the plug from the power
source and/or the battery pack from the
power tool before making any
adjustments, changing accessories, or
storing power tools. Such preventive
safety measures reduce the risk of starting
the power tool accidentally.
Store idle power tools out of the reach
of children and do not allow persons
unfamiliar with the power tool or these
instructions to operate the power tool.
Power tools are dangerous in the hands of
untrained users.
Maintain power tools. Check for
misalignment or binding of moving
parts, breakage of parts and any other
condition that may affect the power
tool’s operation. If damaged, have the
power tool repaired before use. Many
accidents are caused by poorly maintained
power tools.
Keep cutting tools sharp and clean.
Properly maintained cutting tools with
sharp cutting edges are less likely to bind
and are easier to control.
Use the power tool, accessories and
tool bits etc. in accordance with these
instructions, taking into account the
working conditions and the work to be
performed. Use of the power tool for
operations different from those intended
could result in a hazardous situation.
Hold power tools by insulated gripping
surfaces when performing 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 tool “live“and shock the
operator.
Hold power tool by insulated gripping
surfaces, when performing an operation
where the fastener may contact hidden
wiring or its own cord. Fasteners
contacting a “live“ wire may make exposed
metal parts of the power tool “live“ and
could give the operator an electric shock.
POWER TOOL SAFETY

7
Battery tool use and care
Recharge only with the charger
specified by the manufacturer. A charger
that is suitable for one type of battery pack
may create a risk of fire when used with
another battery pack.
Use power tools only with specifically
designated battery packs. Use of any
other battery packs may create a risk of
injury and fire.
When battery pack is not in use, keep it
away from other metal objects, like
paper clips, coins, keys, nails, screws
or other small metal objects that can
make a connection from one terminal to
another. Shorting the battery terminals
together may cause burns or a fire.
Under abusive conditions, liquid may
be ejected from the battery; avoid
contact. If contact accidentally occurs,
flush with water. If liquid contacts eyes,
additionally seek medical help. Liquid
ejected from the battery may cause
irritation or burns.
Service
Have your power tool serviced by a
qualified repair person using only
identical replacement parts. This will
ensure that the safety of the power tool is
maintained.
POWER TOOL SAFETY
SAVE THESE INSTRUCTIONS FOR REFERENCE

8
WARNING: Know your cordless
drill. Do not plug in the charger or
install the battery in the tool until you
have read and understand this
Instruction Manual. Learn the tool’s
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.
Always wear eye protection.
Any power tool can throw
foreign objects into your eyes
and cause permanent eye
damage. ALWAYS wear safety goggles
(not glasses) that comply with ANSI safety
standard Z87.1. Everyday glasses have
only impact resistant lenses. They ARE
NOT safety glasses.
WARNING: Glasses or goggles
not in compliance with ANSI Z87.1
could cause serious injury when they
break.
WARNING: Always use a safety
shield, hearing protection and dust
mask when drilling concrete.
Do not drill material too small to be
securely held.
Always keep hands out of the path of the
drill bit. Avoid awkward hand positions
where a sudden slip could cause your
hand to move into the path of the drill bit.
Secure the workpiece. Use clamps or a
vice to hold the workpiece. It is safer than
using your hand and it frees both hands to
operate the tool.
Make sure there are no nails or foreign
objects in the part of the workpiece to be
drilled.
To avoid injury from accidental starting,
always remove the battery from the tool
before installing or removing a drill bit.
Do not install or use any drill bit that
exceeds 7” (17.5 cm) in length or extends
more than 6” (15 cm) beyond the chuck
jaws. They can bend or break suddenly.
Before starting the operation, jog the drill
switch to make sure the drill bit does not
wobble or vibrate.
Do not use fly cutters or multiple-part hole
cutters, because they can come apart or
become unbalanced during use.
Make sure the spindle has come to a
complete stop before touching the chuck
or attempting to change the drill bit.
Always make sure the chuck is tight and
the drill bit firmly tightened in the chuck
before starting drill.
SPECIFIC SAFETY RULES
!
!
SAVE THESE INSTRUCTIONS FOR REFERENCE
!

9
WARNING: Only use the
diagnostic charger supplied with this kit
to charge a 20V Li-ion #153928 battery
or an 18V Ni-Cd #134458 battery.
Charging any other batteries may
damage the charger and possibly cause
serious injury.
Do not store or carry the battery in a
manner in which metal objects could
contact the exposed metal end. Do not
place the battery in aprons, pockets,
drawers, etc. with loose nails, screws, keys
etc. The battery could short circuit causing
a fire, personal injury or damage to the
battery.
Never attempt to open the battery for any
reason. If the housing of the battery breaks
or cracks, immediately discontinue use
and do not recharge.
Do not charge the battery if it is wet or
shows any evidence of corrosion.
A small leakage from the battery may
occur under extreme usage, charging or
temperature conditions. This does not
indicate a failure. However, if the outer
seal is broken and this leakage gets on
your skin, follow these steps:
1. Wash immediately with soap and
water.
2. Neutralize with a mild acid such as
lemon juice or vinegar.
3. If liquid gets into your eyes, flush
immediately with clean water for a
minimum of 10 minutes and seek
medical attention.
NOTE: The battery liquid is slightly acidic.
Do not incinerate the battery. It can
explode in a fire.
Do not use an extension cord. Plug the
charger cord directly into an electrical
outlet.
Use the charger only in a standard
120V, 60 Hz electrical outlet.
Do not use the charger in wet or damp
conditions. It is intended for indoor use
only. Do not use the charger near sinks or
tubs. Do not immerse the charger in water.
Do not allow the cord to hang over the
edge of a table or counter or touch hot
surfaces. The charger should be placed
away from sinks and hot surfaces.
Do not use the charger to charge any
batteries other than the cordless drill
batteries. Other batteries may explode.
Do not operate charger if the cord or plug
is damaged. Replace the damaged cord
and plug immediately.
Do not operate the charger if it has
received a sharp blow, been dropped or
otherwise damaged in any way. Have a
qualified technician examine the charger
and repair it if necessary. Do not
disassemble the charger.
Do NOT charge the batteries when the
work area or the battery temperature is at
or below 0° C (32° F) or above
45° C (113° F).
Unplug the charger when not in use and
before cleaning or maintenance.
BATTERY & CHARGER SAFETY
!

10
BATTERY PACK RECYCLING
To preserve our natural resources, please
recycle or dispose of batteries properly.
The batteries charged by this charger may
contain chemicals and metals that are
harmful to the environment. Never dispose
of re-chargeable batteries in your normal
household garbage or in landfill sites as
they will add to the pollution of the
environment.
Please call 1-800-822-8837 for the location
of your nearest RBRC battery recycling
location.
BATTERY & CHARGER SAFETY