MasterCraft 54-1243-8 Owner's Manual
5" ANGLE GRINDER
54-1243-8
Owner’s Manual
PRODUCT SPECIFICATIONS
Rating:
120 V, 60 Hz AC
Amperes:
9 A
Speed:
11,000 RPM (no load)
Maximum disc diameter:
5" (127 mm)
Spindle threads:
5
/8" – 11UNC (15.875 mm)
Minimum disc thickness:
5
/32" (3.9 mm)
Weight:
6 lb 7 oz (2.92 kg)
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Call us on our toll free customer support line:
1-800-689-9928
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Replacement parts
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Imported by Mastercraft Canada Toronto, Canada M4S 2B8
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
Use and care of power tools .………………………………………………………..
6
Service …………………………………………………………………………………
6
Specific safety rules …………………………………………………………………..
7–8
Extension cord safety ………………………………………………………….……..
8
Symbols ………………………………………………………………………………..
9
Know your angle grinder ……………………………………………………………..
10
Accessories ……………………………………………………………………………
10
Contents ……………………………………………………………………………….
10–11
Assembly and operating ……………………………………………………………..
12–18
Installing the side handle …………………………………………………………….
12
Installing the guard ……………………………………………………………………
12–13
Installing a grinding disc ……………………………………………………………...
14
Positioning the guard …………………………………………………………………
15
Multiple function switch ………………………………………………………………
16
Grinding ………………………………………………………………………………..
17–18
Maintenance …………………………………………………………………………..
19
Exploded view ………………………………………………………………………...
20
Parts listing …………………………………………………………………………….
21–22
Warranty ……………………………………………………………………….………
23–24
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
CAUTION: Before using this tool or any of its accessories, read this
manual and follow all Safety Rules and Operating Instructions.
!
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 110–120 V operation. It must be
connected to a 110–120 V, 15 A 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
GENERAL SAFETY RULES
WARNING: Read and understand
all instructions. Failure to follow all
instructions listed below may result in
electric shock, fire and/or serious personal
injury.
WORK AREA
Keep your work area clean and well lit.
Cluttered benches and dark areas invite
accidents.
Do not operate power tools in potentially
explosive environments, such as in the
presence of flammable liquids, gas or dust.
Power tools create sparks that may ignite
dust or fumes.
Keep bystanders, children and visitors
away while operating the tool. Distractions
can cause the operator to lose control.
ELECTRICAL SAFETY
Double insulated tools are equipped with a
polarized plug (one blade is wider than the
other). This plug will only fit into a
polarized plug one way.
If the plug does not fit into the outlet
properly, reverse the plug. If it still does not
fit, contact a qualified electrician to install a
polarized outlet. Do not alter the plug in
any way. Double insulation eliminates the
need for the three-pronged grounded
power cord and grounded power supply
system.
Avoid contact between the operator's body
and grounded surfaces such as pipes,
radiators, ranges, and refrigerators. There
is an increased risk of electric shock if the
operator's body is grounded.
Do not expose power tools to rain or wet
conditions. Water entering the power tool
will increase the risk of electric shock.
Do not abuse the cord. Do not use the
power cord to carry the tool or to pull the
plug out of the outlet. Keep the power cord
away from heat, oil, sharp edges, and
moving parts. Replace a damaged power
cord immediately. A damaged power cord
increases the risk of electric shock.
When operating a power tool outdoors,
use an outdoor-rated extension cord type
“W-A” or “W”. These cords are rated for
outdoor use and they reduce the risk of
electric shock.
PERSONAL SAFETY
Stay alert, be aware of the surroundings,
and use common sense when operating a
power tool. Do not use a power tool while
tired or under the influence of drugs,
alcohol, or medication. A moment of
inattention while operating a power tool
may result in serious personal injury.
Dress properly. Do not wear loose clothing
or jewellery.
Contain long hair. Keep hair, clothing, and
gloves away from moving parts. Loose
clothing, jewellery, or long hair can get
caught in moving parts.
!
POWER TOOL SAFETY
6
PERSONAL SAFETY – cont’d
Avoid accidental start-ups. Verify that the
switch is in the OFF position before
plugging in the tool. Carrying a power tool
with a finger on the switch or plugging in a
tool that has the switch in the ON position
invites accidents.
Remove adjusting keys and wrenches
before turning the tool ON. A wrench or
key that is left attached to a rotating part of
the tool may result in personal injury.
Do not overreach. Keep proper footing and
balance at all times. Proper footing and
balance allows the operator to maintain
better control of the tool in unexpected
situations.
Use safety equipment. Always wear eye
protection.
Use a dust mask, non-skid safety shoes, a
hardhat, or hearing protection when
appropriate.
USE AND CARE OF POWER TOOLS
Use clamps or another practical means to
secure and support the workpiece to a
stable platform. Holding the work in a hand
or against the body is not stable, and may
lead to loss of control.
Do not force the tool. Use the correct tool
for the application. The correct tool will do
the job better and safer when used at the
rate that it was designed to work at.
Do not use a power tool if it cannot be
turned ON or OFF using the power switch.
A tool that cannot be controlled using the
switch is dangerous, and must be repaired.
Disconnect the plug from the outlet before
making any adjustments, changing
accessories, or storing the tool. Such
preventive safety measures reduce the risk
of accidental start-ups.
When power tools are not in use, store
them out of the reach of children or
untrained persons. Tools are dangerous in
the hands of untrained users.
Maintain tools with care. Keep cutting tools
sharp and clean. Properly maintained
cutting tools with sharp cutting edges are
less likely to bind, and are easier to
control.
Inspect the tool for misalignment or binding
of moving parts, broken parts, and any
other condition that may affect the
operation of the tool. If it is damaged, have
the tool serviced before using it. Many
accidents are caused by poorly maintained
tools.
Use only accessories that are
recommended by the manufacturer for this
model. Accessories that are suitable for
one tool may become hazardous when
used with another tool.
SERVICE
Tool servicing must be performed by
qualified personnel. Service or
maintenance performed by non-qualified
personnel could result in a risk of injury.
When servicing a tool, use only identical
replacement parts. Follow the instructions
in the Maintenance section of this Manual.
The use of unauthorized parts or failure to
follow the instructions in the Maintenance
section of this Manual may create a risk of
electric shock or injury.
POWER TOOL SAFETY
7
WARNING: Know your angle
grinder. Read the Owner’s Manual
carefully. 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: Wearing glasses or
goggles that do not comply with ANSI
Z87.1 could cause serious injury if they
break.
Always wear hearing protection and a dust
mask. Use only in a well-ventilated area.
Using personal safety devices and working
in a safe environment reduces the risk of
injury.
DANGER: Always unplug the tool
from the power source before changing
the grinding disc or cleaning the tool.
DANGER: Never place hands or
fingers near the grinding disc while the
tool is running. Severe injury will result.
WARNING: After prolonged use,
external metal parts will become hot to the
touch.
Always turn the switch OFF and wait for
the grinding disc to come to a complete
stop before putting the angle grinder down.
Grinding disc and guard must be securely
attached as described in this Owner’s
Manual before connecting the grinder to
the power source. Failure to do so will
increase the risk of serious injury if the
grinding disc shatters.
Make sure the guard is in good condition
and securely installed before operating
grinder.
Secure workpiece. Use clamps or a vice to
hold the work when practical. It’s safer
than using your hand and it frees both
hands to operate the tool.
Do not clamp grinder in vise or use as a
fixed grinder.
Grinding discs must be stored in a dry
location to prevent deterioration.
Before attaching the grinding disc, inspect
it for visible defects. If cracked, chipped or
warped do not install it.
Use only grinding discs in compliance with
ANSI Standard B7.1 and rated for a speed
greater than 11,000 RPM.
Do not remove the soft paper in the centre
of the grinding disc.
NOTE: If this paper has been previously
removed, insert some soft rubber or paper
between the grinding disc and the disc
flange to prevent damage to the grinding
disc.
Do not alter or enlarge the centre hole of
the grinding disc as this could result in
breaking it.
SPECIFIC SAFETY RULES
! ! !
!
!
8
Do not over tighten the clamp nut on the
grinding disc. Excessive tightening may
cause the disc to crack and possibly
shatter during operation.
Do not use the grinder if the disc flange or
clamp nut is missing or if the spindle is
bent.
Check to make sure the power cord and
any extension cord are clear of the area to
be cut. Contact with ”live” wires could
shock the operator or cause a fire.
Hold tool by insulated gripping surfaces
when performing an operation where the
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.
Always hold the grinder securely with two
hands while working and at all times when
it is running.
Never turn the grinder ON with the grinding
disc or any rotating parts touching the work
surface.
Never cover the air vents in the motor
housing with your hands while operating
the grinder.
WARNING: Keep the extension
cord clear of the work area. Position the
cord so it will not get caught on the
workpiece, a tool, or any other obstruction
while the power tool is in use.
If an extension cord is used with this angle
grinder, verify that it is in good condition.
When using an extension cord, be sure to
use one that is heavy enough to carry the
current that the tool will draw. An
undersized cord will cause a drop in line
voltage, which will result in a loss of power
and overheating.
The following table shows the correct size
to use according to cord length and the
amperage rating that is listed on the tool's
nameplate. When in doubt, use the next
heavier gauge. The smaller the gauge
number, the heavier the cord.
Verify that the extension cord is properly
wired and in good condition. Replace a
damaged extension cord immediately, or
have it repaired by a qualified electrician
before using it. Keep the extension cord
away from sharp objects, excessive heat,
and damp or wet areas.
Use a separate electrical circuit for power
tools. This circuit must consist of not less
than 14 gauge wire and should be
protected by either a 15 A time-delayed
fuse or a circuit breaker. Before connecting
the power tool to the outlet, verify that the
switch is in the OFF position, and that the
voltage of the power source is the same as
the voltage that is indicated on the tool's
nameplate. Running this angle grinder at
lower voltage will damage the motor.
EXTENSION CORD
SAFETY
!
SPECIFIC SAFETY RULES
MINIMUM GAUGE (AWG)
EXTENSION CORDS (120 V 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
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