master mechanic 134471 User manual

7 AMP 4 1/2" ANGLE GRINDER
134471
Owner’s Manual
PRODUCT SPECIFICATIONS
Rating:
120V, 60Hz, AC
Amperes:
7 AMP
Speed:
11,000 RPM (no load)
Maximum disc diameter:
4½" (115 mm)
Spindle threads:
5/8" –11UNC (15.875 mm)
Minimum disc thickness:
5/32" (3.9 mm)
Weight:
3 lb 6 oz (1.53 kg)
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
©2011 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 safety ………………………………………………………………….…..
5
Electrical safety ……………………………………………………………………….
5
Personal safety ………………………………………………………………………..
5–6
Power tool use and care.……………………………………………………………..
6
Service …………………………………………………………………………………
6
Specific safety rules …………………………………………………………………..
7–10
Kickback and related warnings ……………………………………………………...
8–9
Safety warnings specific for grinding and abrasive cutting-off operations ……...
9
Additional safety warnings specific for abrasive cutting-off operations …………
9–10
Safety warnings specific for sanding operations …………………………………..
10
Safety warnings specific for polishing operations …………………………………
10
Safety warnings specific for wire brushing operations ……………………………
10
Extension cord safety ………………………………………………………….……..
11
Symbols ………………………………………………………………………………..
12
Know your angle grinder ………………………….................................................
13
Available accessories ………………………………………………………………...
13
Contents ……………………………………………………………………………….
14
Assembly and operating ……………………………………………………………..
15–20
Installing the auxiliary handle ………………………………………………………..
15
Installing the guard ……………………………………………………………………
15–16
Positioning the guard …………………………………………………………………
16
Installing a grinding disc ……………………………………………………………..
17
ON/OFF switch ………………………………………………………………………..
19
Grinding ………………………………………………………………………………..
19–20
Maintenance …………………………………………………………………………..
21
Exploded view ………………………………………………………………………...
22
Parts listing …………………………………………………………………………….
23–24
Warranty ……………………………………………………………………….………
25
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
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.
!

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.
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

7
WARNING: This power tool is
intended to function as a grinder or cut-
off tool. Read all safety warnings,
instructions, illustrations and
specifications provided with this power
tool. Failure to follow all instructions listed
below may result in electric shock, fire
and/or serious injury.
WARNING: Operations such as
sanding, wire brushing or polishing are
not recommended to be performed with
this power tool. Operations for which the
power tool was not designed may create a
hazard and cause personal injury.
Do not use accessories which are not
specifically designed and
recommended by the tool manufacturer.
Just because the accessory can be
attached to your power tool, it does not
assure safe operation.
The rated speed of the accessory must
be at least equal to the maximum speed
marked on the power tool. Accessories
running faster than their RATED SPEED
can break and fly apart.
The outside diameter and the thickness
of your accessory must be within the
capacity rating of your power tool.
Incorrectly sized accessories cannot be
adequately guarded or controlled.
The arbor size of wheels, flanges,
backing pads or any other accessory
must properly fit the spindle of the
power tool. Accessories with arbor holes
that do not match the mounting hardware
of the power tool will run out of balance,
vibrate excessively and may cause loss of
control.
Do not use a damaged accessory.
Before each use inspect the accessory
such as abrasive wheels for chips and
cracks, backing pad for cracks, tear or
excess wear, wire brush for loose or
cracked wires. If power tool or
accessory is dropped, inspect for
damage or install an undamaged
accessory. After inspecting and
installing an accessory, position
yourself and bystanders away from the
plane of the rotating accessory and run
the power tool at maximum no-load
speed for one minute. Damaged
accessories will normally break apart
during this test time.
Wear personal protective equipment.
Depending on application, use face
shield, safety goggles or safety
glasses. As appropriate, wear dust
mask, hearing protectors, gloves and
workshop apron capable of stopping
small abrasive or workpiece fragments.
The eye protection must be capable of
stopping flying debris generated by
various operations. The eye protection
must be capable of stopping flying debris
generated by various operations. The dust
mask or respirator must be capable of
filtrating particles generated by your
operation. Prolonged exposure to high
intensity noise may cause hearing loss.
Keep bystanders a safe distance away
from work area. Anyone entering the
work area must wear personal
protective equipment. Fragments of
workpiece or of a broken accessory
may fly away and cause injury beyond
immediate area of operation.
SPECIFIC SAFETY RULES
!
!

8
Hold power tool by insulated gripping
surfaces only, when performing an
operation where the cutting accessory
may contact hidden wiring or its own
cord. Cutting accessory contacting a "live"
wire may make exposed metal parts of the
power tool "live" and shock the operator.
Position the cord clear of the spinning
accessory. If you lose control, the cord
may be cut or snagged and your hand or
arm may be pulled into the spinning
accessory.
Never lay the power tool down until the
accessory has come to a complete
stop. The spinning accessory may grab
the surface and pull the power tool out of
your control.
Do not run the power tool while
carrying it at your side. Accidental
contact with the spinning accessory could
snag your clothing, pulling the accessory
into your body.
Regularly clean the power tool’s air
vents. The motor’s fan will draw the dust
inside the housing and excessive
accumulation of powdered metal may
cause electrical hazards.
Do not operate the power tool near
flammable materials. Sparks could ignite
these materials.
Do not use accessories that require
liquid coolants. Using water or other
liquid coolants may result in electrocution
or shock.
FURTHER SAFETY INSTRUCTIONS
FOR ALL OPERATIONS
Kickback and Related Warnings
Kickback is a sudden reaction to a pinched
or snagged rotating wheel, backing pad,
brush or any other accessory. Pinching or
snagging causes rapid stalling of the
rotating accessory which in turn causes
the uncontrolled power tool to be forced in
the direction opposite of the accessory’s
rotation at the point of the binding.
For example, if an abrasive wheel is
snagged or pinched by the workpiece, the
edge of the wheel that is entering into the
pinch point can dig into the surface of the
material causing the wheel to climb out or
kick out. The wheel may either jump
toward or away from the operator,
depending on direction of the wheel’s
movement at the point of pinching.
Abrasive wheels may also break under
these conditions.
Kickback is the result of power tool misuse
and/or incorrect operating procedures or
conditions and can be avoided by taking
proper precautions as given below.
Maintain a firm grip on the power tool
and position your body and arm to
allow you to resist kickback forces.
Always use auxiliary handle, if
provided, for maximum control over
kickback or torque reaction during
start-up. The operator can control torque
reactions or kickback forces, if proper
precautions are taken.
Never place your hand near the rotating
accessory. Accessory may kickback over
your hand.
Do not position your body in the area
where power tool will move if kickback
occurs. Kickback will propel the tool in
direction opposite to the wheel’s
movement at the point of snagging.
SPECIFIC SAFETY RULES
!

9
Kickback and Related Warnings - cont’d
Use special care when working corners,
sharp edges etc. Avoid bouncing and
snagging the accessory. Corners, sharp
edges or bouncing have a tendency to
snag the rotating accessory and cause
loss of control or kickback.
Do not attach a saw chain woodcarving
blade or toothed saw blade. Such blades
create frequent kickback and loss of
control.
ADDITIONAL SAFETY INSTRUCTIONS
FOR GRINDING AND CUTTING-OFF
OPERATIONS
Safety Warnings Specific for
Grinding and Abrasive Cutting-Off
Operations:
Use only wheel types that are
recommended for your power tool and
the specific guard designed for the
selected wheel. Wheels for which the
power tool was not designed cannot be
adequately guarded and are unsafe.
The guard must be securely attached to
the power tool and positioned for
maximum safety, so the least amount of
wheel is exposed towards the operator.
The guard helps to protect operator from
broken wheel fragments and accidental
contact with wheel.
Wheels must be used only for
recommended applications. For
example: do not grind with the side of
cut-off wheel. Abrasive cut-off wheels are
intended for peripheral grinding, side
forces applied to these wheels may cause
them to shatter.
Always use undamaged wheel flanges
that are of correct size and shape for
your selected wheel. Proper wheel
flanges support the wheel thus reducing
the possibility of wheel breakage. Flanges
for cut-off wheels may be different from
grinding wheel flanges.
Do not use worn down wheels from
larger power tools. Wheel intended for
larger power tool is not suitable for the
higher speed of a smaller tool and may
burst.
ADDITIONAL SAFETY INSTRUCTIONS
FOR CUTTING-OFF OPERATIONS
Additional Safety Warnings Specific
for Abrasive Cutting-Off Operations:
Do not "jam" the cut-off wheel or apply
excessive pressure. Do not attempt to
make an excessive depth of cut.
Overstressing the wheel increases the
loading and susceptibility to twisting or
binding of the wheel in the cut and the
possibility of kickback or wheel breakage.
Do not position your body in line with
and behind the rotating wheel. When the
wheel, at the point of operation, is moving
away from your body, the possible
kickback may propel the spinning wheel
and the power tool directly at you.
When wheel is binding or when
interrupting a cut for any reason, switch
off the power tool and hold the power
tool motionless until the wheel comes
to a complete stop. Never attempt to
remove the cut-off wheel from the cut
while the wheel is in motion otherwise
kickback may occur. Investigate and take
corrective action to eliminate the cause of
wheel binding.
SPECIFIC SAFETY RULES
!
!

10
Additional Safety Warnings Specific for Abrasive
Cutting-Off Operations: - cont’d
Do not restart the cutting operation in
the workpiece. Let the wheel reach full
speed and carefully reenter the cut. The
wheel may bind, walk up or kickback if the
power tool is restarted in the workpiece.
Support panels or any oversized
workpiece to minimize the risk of wheel
pinching and kickback. Large
workpieces tend to sag under their own
weight. Supports must be placed under the
workpiece near the line of cut and near the
edge of the workpiece on both sides of the
wheel.
Use extra caution when making a
"pocket cut" into existing walls or other
blind areas. The protruding wheel may cut
gas or water pipes, electrical wiring or
objects that can cause kickback.
ADDITIONAL SAFETY INSTRUCTIONS
FOR SANDING OPERATIONS
Safety Warnings Specific for
Sanding Operations:
Do not use excessively oversized
sanding disc paper. Follow
manufacturer’s recommendations,
when selecting sanding paper. Larger
sanding paper extending beyond the
sanding pad presents a laceration hazard
and may cause snagging, tearing of the
disc or
kickback.
ADDITIONAL SAFETY INSTRUCTIONS
FOR POLISHING OPERATIONS
Safety Warnings Specific for
Polishing Operations:
Do not allow any loose portion of the
polishing bonnet or its attachment
strings to spin freely. Tuck away or trim
any loose attachment strings. Loose and
spinning attachment strings can entangle
your fingers or snag on the workpiece.
ADDITIONAL SAFETY INSTRUCTIONS
FOR WIRE BRUSHING OPERATIONS
Safety Warnings Specific for Wire
Brushing Operations:
Be aware that wire bristles are thrown
by the brush even during ordinary
operation. Do not overstress the wires
by applying excessive load to the
brush. The wire bristles can easily
penetrate light clothing and/or skin.
If the use of a guard is recommended
for wire brushing, do not allow any
interference of the wire wheel or brush
with the guard. Wire wheel or brush may
expand in diameter due to work load and
centrifugal forces.
SPECIFIC SAFETY RULES
!
!
!

11
WARNING: Keep the extension
cord clear of the working area. Position
the cord so it will not get caught on the
workpiece, tools or any other obstructions
while you are working with the power tool.
Make sure any extension cord used with
this tool is in good condition. When using
an extension cord, be sure to use one of
heavy enough gauge to carry the current
the tool will draw. An undersized cord will
cause a drop in line voltage resulting in
loss of power and overheating.
The table at right shows the correct size to
use according to cord length and
nameplate ampere rating. If in doubt, use
the next heavier gauge. The smaller the
gauge number the heavier the cord.
Be sure your extension cord is properly
wired and in good condition. Always
replace a damaged extension cord or have
it repaired by a qualified electrician before
using it. Protect your extension cord from
sharp objects, excessive heat and damp or
wet areas.
Use a separate electrical circuit for your
power tools. This circuit must not be less
than 14 gauge wire and should be
protected with either a 15 AMP time
delayed fuse or circuit breaker. Before
connecting the power tool to the power
source, make sure the switch is in the OFF
position and the power source is the same
as indicated on the nameplate. Running at
lower voltage will damage the motor.
!
MINIMUM GAUGE (AWG)
EXTENSION CORDS (120V use only)
Amperage
rating
Total length
More
than
Not
more
than
25'
(7.5 m)
50'
(15 m)
100'
(30 m)
150'
(45 m)
0
6
18
16
16
14
6
10
18
16
14
12
10
12
16
16
14
12
12
16
14
12
Not Applicable
EXTENSION CORD SAFETY

12
This symbol designates that this tool is
listed with U.S. requirements by
ETL Testing Laboratories, Inc.
Conforms to UL Std. 60745-1 and
60745-2-3.
3042597
JD3033U
LISTED
V
Volts
A
Amperes
Hz
Hertz
W
Watts
kW
Kilowatts
Microfarads
L
Liters
kg
Kilograms
H
Hours
N/cm2
Newtons per square
centimeter
Pa
Pascals
OPM
Oscillations per minute
Min
Minutes
S
Seconds
or a.c.
Alternating current
Three-phase alternating
current
Three-phase alternating
current with neutral
Direct current
No load speed
Alternating or direct
current
Class II construction
Splash-proof
construction
Watertight construction
Protective grounding at
grounding terminal,
Class I tools
Revolutions or
reciprocations per
minute
Diameter
Off position
Arrow
Warning symbol
Wear your safety
glasses
SYMBOLS
WARNING: Some of the following symbols may appear on the angle
grinder. Study these symbols and learn their meaning. Proper interpretation
of these symbols will allow for more efficient and safer operation of this tool.
!

13
AVAILABLE ACCESSORIES
WARNING: Use only grinding
discs and cut-off discs that are
recommended for this angle grinder.
Follow the instructions that accompany
the accessories. The use of improper
accessories may result in injury to the
operator or damage to the angle
grinder.
Before using any accessory, carefully read
the instructions or the owner’s manual for
the accessory.
Grinding discs
Cut-off discs
WARNING: If any part is missing or
damaged, do not plug the angle grinder
into the power source until the missing or
damaged part is replaced.
KNOW YOUR ANGLE GRINDER
ACCESSORIES
!
!
Auxiliary
handle
Air vents
ON/OFF switch
Guard
Spindle locking
button
Guard clamp
lever

14
CONTENTS
Carefully unpack the angle grinder.
Compare the contents against the “ANGLE
GRINDER COMPONENTS” chart at right.
NOTE: See illustration of the angle grinder
below.
WARNING: To avoid fire or toxic
reaction, never use gasoline, naphtha,
acetone, lacquer thinner or similar
highly volatile solvents to clean the
tool.
!
ANGLE GRINDER COMPONENTS
KEY
DESCRIPTION
QTY
A
Angle grinder
1
B
Auxiliary handle
1
C
Grinding disc
1
D
Flange wrench
1
E
Disc guard
1
Owner’s Manual
1
CONTENTS

15
WARNING: Always disconnect
your angle grinder from the power
source when replacing grinding or cut-
off discs, adjusting the guard, cleaning
the tool or when the tool is not in use.
Disconnecting the angle grinder will
prevent accidental starting that could
cause serious personal injury.
INSTALLING THE AUXILIARY HANDLE
1. Unplug the angle grinder from the
power source.
2. Install the auxiliary handle (1) by
screwing it clockwise into the left side
(2) of the gear housing (3) (Fig. 1).
NOTE: The handle can be installed in
three different positions; left side, right side
or in the middle of the tool (Fig. 6, 7 & 8).
WARNING: The auxiliary handle
must always be used to prevent loss of
control and possible injury.
3. Tighten the auxiliary handle securely.
NOTE: Hand tighten the auxiliary handle.
Do not over tighten.
INSTALLING THE GUARD
WARNING: The guard must be
installed before installing a grinding
disc or using the angle grinder. Failure
to do so could result in serious
personal injury.
1. Depress the spindle lock button (1)
and rotate the clamp nut (2) until the
spindle locks (Fig. 2).
ASSEMBLY AND OPERATION
!
!
!
Fig. 1
Fig. 2

16
INSTALLING THE GUARD –cont’d
2. Turn the clamp nut counter clockwise
and remove it from the spindle.
NOTE: Always use the wrench (3) to
remove the clamp nut.
3. Remove the disc flange (4). It will
simply pull off the spindle (5).
4. Pull the guard clamp lever (6) outward
to allow the guard clamp to expand for
installation.
5. Slide the guard clamp (7) over the
spindle housing (8) until the blade
guard locating detents (9) mate with
the grooves (10) in the spindle
housing (Fig. 3).
6. Press the guard clamp fully onto the
spindle housing.
NOTE: Rotate the guard so it is positioned
correctly depending upon the location of
the side handle in Fig. 4, 5 & 6.
7. Push the guard clamp lever toward
the guard clamp until the guard clamp
firmly locks the guard onto the spindle
housing.
POSITIONING THE GUARD
WARNING: The guard must be
positioned correctly to protect the
operator. Guard placement depends
upon which side of the tool the auxiliary
handle is used, to afford the greatest
protection for the user. Rotate the
guard to the correct position as noted
in Fig. 4, 5 or 6 at right.
ASSEMBLY AND OPERATION
!
Fig. 3
Fig. 5
Fig. 4
Fig. 6
Fig. 2

17
INSTALLING A GRINDING DISC
WARNING: Use the correct size
grinding disc. Never use a grinding disc
thinner than 5/32" (3.9mm).
1. Lock the disc guard onto the spindle
housing.
2. Depress the spindle lock button (1)
and rotate the clamp nut (2) until the
spindle locks (Fig. 7).
3. Turn the clamp nut counter clockwise
and remove it from spindle.
NOTES:
a) If the clamp nut cannot be loosened by
hand, use the wrench (3) provided.
b) DO NOT remove the disc flange (4).
4. Make sure the flats on the bottom of
disc flange are engaged with the flats
on the spindle (5).
5. Place the grinding disc over the
spindle with the concave side of the
disc (6) facing outward.
6. Screw the clamp nut (2) onto the
spindle with the flat side of nut facing
up. Fit the raised small diameter
portion of the clamp nut into the hole
in the grinding disc. Tighten to finger
tight only.
7. Depress the spindle lock button and
rotate the grinding disc clockwise until
the spindle locks.
8. Securely tighten the clamp nut with
the wrench provided.
ASSEMBLY AND OPERATION
!
!
ASSEMBLY AND OPERATION
Fig. 7

18
WARNING:Never attach a wood
cutting or carving blade of any type to
this angle grinder. It is designed for
grinding metal only. Use for any other
purpose is not recommended and
creates a hazard which will result in
serious injury.
WARNING: Never cover the air
vents. They must always be open for
proper motor cooling.
ASSEMBLY AND OPERATION
!
!
For safety reasons, the operator
must read the sections of this
Owner’s Manual entitled "GENERAL
SAFETY WARNINGS", "POWER
TOOL SAFETY", "SPECIFIC SAFETY
RULES", "EXTENSION CORD
SAFETY" and "SYMBOLS" before
using this angle grinder.
Verify the following every time the
angle grinder is used:
1. Cord is not damaged
2. Grinding disc is correct for the
type of material being ground
3. Grinding disc is in good
condition and securely tightened
onto the spindle
4. Proper eye, hearing and
breathing protection are being
worn.
Failure to adhere to these safety
rules can greatly increase the
chances of serious injury.
WARNING
!

19
ON/OFF SWITCH
To turn the switch ON, press the back of
the switch slider (1) into the body of the
tool. While pressing on the rear of the
slider, push it forward (2) until the front part
of the switch (3) engages the catch
(Fig. 8). When the switch “snaps” into
position, the switch will remain ON and the
motor will continue running. To turn the
switch OFF, press the rear of the slider
into the angle grinder body. The switch will
“snap” to the OFF position.
GRINDING
Always select and use grinding discs that
are recommended for the material to be
ground. Make sure that the maximum
operating speed of the grinding disc
selected is not less than 11,000 RPM.
Secure all work before beginning the
grinding operation.
Secure small workpieces in a vice or clamp
to a workbench.
WARNING: Never use your
grinder with the guard removed. It has
been designed for use only with the
guard installed. Attempting to use the
grinder with the guard removed will
result in loose particles being thrown
against the operator resulting in serious
personal injury.
WARNING: Never use your
grinder without eye protection.
Following this rule will reduce the risk
of serious personal injury.
!
ASSEMBLY AND OPERATION
!
Fig. 8

20
GRINDING –cont’d
The efficient operation of the angle grinder
begins by controlling the pressure and
surface contact between the grinding disc
and the workpiece. Flat surfaces are
ground at an acute angle, normally
between 5 and 15 degrees (Fig. 9).
For maximum control, hold the grinder in
front and away from you with both hands,
keeping the grinding disc clear of the
workpiece. Start your grinder and let the
motor and grinding disc build up to full
speed. Gradually lower the grinder until the
grinding disc contacts the workpiece.
For best results keep the grinder tilted at
an angle of between 5 and 15 degrees and
continuously moving at a steady,
consistent pace. Move the grinder back
and forth or up and down over the work
area. Keep the grinder moving so that an
excessive amount of material is not
removed from one area. If the grinder is
held in one spot too long, it will gouge and
cut grooves in the workpiece. If the grinder
is held at too sharp an angle, it will gouge
the workpiece because of the
concentration of pressure on a small area.
Use just enough pressure to keep the
grinder from chattering or bouncing. Heavy
pressure will decrease its speed and put a
strain on the motor. Normally, the weight of
the tool alone is adequate for most
grinding jobs. Use light pressure when
grinding jagged edges or loose bolts where
there is potential for the grinder to snag on
the metal edge.
Lift the grinder away from the workpiece
before turning it OFF.
ASSEMBLY AND OPERATION
Fig. 9
5° to 15°