jobmate 054-7234-4 User manual

4½" Angle Grinder
054-7234-4
Instruction Manual
Imported by Trileaf Distribution Trifeuil Toronto, Canada M4S 2B8
PRODUCT SPECIFICATIONS
Rating:
120 V, 60 Hz, AC
Amperes:
5.8 A
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)
Need Assistance?
Call us on our toll free customer support line:
1-866-JOBMATE
Technical questions
Replacement parts
Parts missing from package

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
Tool use and care ………………………………………………………….
6
Service ………………………………………………………………………
6
Specific safety rules …………………………………………………………………..
7–8
Extension cord safety ………………………………………………………………...
8
Symbols ………………………………………………………………………………..
9
Know your angle grinder ……………………………………………………………..
10
Accessories ……………………………………………………………………………
11
Contents ……………………………………………………………………………….
11
Assembly and operation ……………………………………………………………..
12–18
Installing the side handle ………………………………………………….
12
Installing the guard …………………………………………………………
13–14
Installing a grinding disc …………………………………………………...
14–15
Positioning the guard ………………………………………………………
15
ON/OFF switch ……………………………………………………………..
16
Grinding ……………………………………………………………………..
17–18
Maintenance …………………………………………………………………………..
18
Parts diagram ………………………………………………………………………….
19
Parts list ………………………………………………………………………………..
20–21
Warranty ……………………………………………………………………….………
22
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 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 120 V operation. It must be connected to
a 120 V 15 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.
ALWAYS WEAR A DUST MASK DESIGNED FOR USE WHEN
OPERATING A POWER TOOL IN A DUSTY ENVIRONMENT.
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, cement and other masonry products
Arsenic and chromium from chemically-treated lumber
Your level of 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 dust
masks that are specially designed to filter out microscopic particles.
!
GENERAL SAFETY WARNINGS

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 which may
ignite the dust or fumes.
Keep bystanders, children and visitors
away while operating the tool. Distractions
can cause you to lose control.
ELECTRICAL SAFETY
Double insulated tools are equipped with a
polarized plug (one blade is wider than the
other). This plug will fit in a polarized plug
only one way.
If the plug does not fit fully into the outlet,
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-prong grounded power
cord and grounded power supply system.
Avoid body contact with grounded surfaces
such as pipes, radiators, ranges and
refrigerators. There is increased risk of
electric shock if your 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. Never use the cord
to carry the tool 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.
When operating a power tool outdoors,
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
Stay alert, watch what you are doing and
use common sense when operating a
power tool. Do not use the 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.
Dress properly. Do not wear loose clothing
or jewellery.
Contain long hair. Keep your hair, clothing
and gloves away from moving parts. Loose
clothing, jewellery or long hair can be
caught in moving parts.
!
POWER TOOL SAFETY

6
PERSONAL SAFETY –cont’d
Avoid accidental starting. Be sure the
switch is OFF before plugging in. Carrying
tools with your finger on the switch or
plugging in tools that have the switch ON
invites accidents.
Remove adjusting keys or 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 enables better control of the tool
in unexpected situations.
Use safety equipment. Always wear eye
protection.
Dust mask, non-skid safety shoes, hard
hat or hearing protection must be used for
appropriate conditions.
TOOL USE AND CARE
Use clamps or another practical way to
secure and support the workpiece to a
stable platform. Holding the work by hand
or against your body is unstable and may
lead to loss of control.
Do not force the tool. Use the correct tool
for your application. The correct tool will do
the job better and safer at the rate for
which it was designed.
Do not use the tool if the power switch
does not turn it ON or OFF. Any tool that
cannot be controlled with the switch is
dangerous and must be repaired.
Disconnect the plug from the power source
before making any adjustments, changing
accessories or storing the tool. Such
preventive safety measures reduce the risk
of starting the tool accidentally.
Store idle tools out of reach of children and
other 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.
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.
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.
SERVICE
Tool service must be performed only by
qualified personnel. Service or
maintenance performed by unqualified
personnel could result in risk of injury.
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
follow Maintenance instructions may
create a risk of electric shock or injury.
POWER TOOL SAFETY

7
WARNING: For your safety, do not
plug in your angle grinder until you
have read and understood this Owner’s
Manual.
WARNING: Always wear eye
protection that conforms with CSA
requirements or ANSI safety standard
Z87.1.
WARNING: Always wear gloves to
protect your hands from hot sparks.
WARNING: Always wear hearing
protection and dust mask. Use only in well
ventilated areas. Use of personal
protective equipment and working in a safe
environment will reduce the risk of injury.
Always keep hands out of the path of the
grinding disc. Avoid awkward hand
positions where a sudden slip could cause
your hand to move into the moving blade.
To avoid injury from accidental starting,
always unplug the angle grinder from the
power source before installing or removing
grinding discs.
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 that comply 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.
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.
SPECIFIC SAFETY RULES
!
!
!
!

8
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 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 below 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 A 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.
!
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

9
V
volts
A
amperes
Hz
hertz
W
watt
kW
kilowatts
microfarads
L
liters
kg
kilograms
H
hours
N/cm2
newtons per square
centimeter
Pa
pascals
Min
minutes
S
seconds
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 earthing at
earthing terminal, Class I
tools
revolutions or
reciprocations per
minute
diameter
off position
arrow
warning symbol
WARNING: Some of the symbols below may be used on your tool.
Please study them and learn their meaning. Proper interpretation of
these symbols will allow you to operate the tool better and safer.
!
SYMBOLS
This symbol designates that
this tool is listed with both
Canadian and U.S.
requirements by Underwriters
Laboratories.
HOMOLOGUE
90SM
E205586

10
KNOW YOUR ANGLE GRINDER
Side handle
Air vents
ON/OFF switch
Guard
Spindle locking
button
Disc flange
Disc

11
AVAILABLE ACCESSORIES
WARNING: Use only grinding
discs recommended for this angle
grinder. Follow instructions that
accompany the grinding discs.
Improper use of grinding discs may
cause injury to the operator or damage
to the angle grinder.
Do not use any accessory unless you have
completely read the instructions or
Owner’s Manual for that accessory.
Grinding 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.
CONTENTS
Carefully unpack the angle grinder.
Compare against the “Angle Grinder
Components” chart below.
NOTE: See illustration of components
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
DESCRIPTION
QTY
A
Angle grinder
1
B
Side handle
1
C
Disc guard
1
D
Grinding disc
1
E
Clamp nut wrench
1
Owner’s manual
1
ACCESSORIES & CARTON CONTENTS

12
WARNING: Always disconnect
your angle grinder from the power
source when replacing grinding discs,
adjusting the guard, cleaning or when
the tool is not in use. Disconnecting the
angle grinder will prevent accidental
starting that could cause serious
personal injury.
INSTALLING THE SIDE HANDLE
1. Unplug the angle grinder from the
power source.
2. Install the side handle (1) by screwing
it clockwise into the left side (2) of the
gear housing (3) (Fig. 1).
NOTE: The handle can be installed on
either the left or right side of the grinder
gear housing, depending upon operator
preference (Fig. 6 & 7). The side handle
must always be used to prevent loss of
control and possible injury.
3. Tighten the side handle securely.
NOTE: Hand-tighten the side handle. Do
not over tighten.
ASSEMBLY AND OPERATION
!
1
2
3

13
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).
2. Turn the clamp nut counter clockwise
and remove it from the spindle.
NOTE: If the clamp nut cannot be
loosened by hand, use the wrench (3)
provided.
3. Remove the disc flange (4). It will
simply pull off the spindle (5).
4. Loosen the guard clamp bolt 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 mate with the
groove (9) in the spindle housing
(Fig. 3).
NOTE: Rotate the guard so it is positioned
correctly depending upon the location of
the side handle in Fig. 6 &7.
ASSEMBLY AND OPERATION
!
7
9
8

14
INSTALLING THE GUARD –cont’d
6. Rotate guard to position it toward the
rear of the grinder.
7. Use a #2 Philips®screwdriver to
tighten the guard clamp screw (Fig. 4).
8. Install the disc flange, making sure it
mates with the flats on the spindle.
9. Install the clamp nut finger tight to
hold the disc flange in place.
INSTALLING A GRINDING DISC
WARNING: Use correct size
grinding disc. Never use a grinding disc
thinner than 5/32"(3.9mm).
1. Depress the spindle lock button (1)
and rotate the clamp nut (2) until
spindle locks (Fig. 5).
2. 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).
3. Make sure the flats on the bottom of
disk flange are engaged with the flats
on the spindle (5).
4. Place the grinding disc over the
spindle with the concave side of the
disc (6) facing outward.
ASSEMBLY AND OPERATION
!

15
INSTALLING GRINDING DISC - cont’d
5. 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.
6. Depress the spindle lock button and
rotate the grinding disc clockwise until
the spindle locks.
7. Securely tighten the clamp nut with
the wrench provided.
POSITIONING THE GUARD
WARNING: Guard must be
positioned correctly to protect the
operator. Rotate the guard to the
correct position as noted in Fig. 6 or 7
at right. Guard placement depends
upon where your hand is positioned on
the handle.
!
ASSEMBLY AND OPERATION
!
Handle on
right side
Handle on
left side

16
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 air vents.
They must always be open for proper
motor cooling.
ON/OFF SWITCH
To turn the switch ON, press the back of
the switch slider (3) into the body of the
tool. While pressing on the rear of the
slider, push it forward (1) until the front part
of the switch (2) 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.
ASSEMBLY AND OPERATION
WARNING: Have you read “GENERAL SAFETY WARNINGS”, “POWER
TOOL SAFETY”, “SPECIFIC SAFETY RULES”, EXTENSION CORD SAFETY” and
“SYMBOLS” on pages 3, 4, 5, 6, 7, 8 & 9 of this Manual? If not, please do it now
before you operate this angle grinder. Your safety depends on it!
Every time you use the angle grinder you should verify the following:
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 and hearing and breathing protection are being worn.
Failure to adhere to these safety rules can greatly increase the chances of
injury.
!
!
!

17
GRINDING
Always select and use grinding discs that
are recommended for the material to be
ground. Make sure that the minimum
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.
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.
!
ASSEMBLY AND OPERATION
!

18
GRINDING –cont’d
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.
WARNING: When servicing, use only
identical replacement parts. Use of any
other part may create a hazard or cause
product damage.
DO NOT abuse power tools. Abusive
practices can damage the tool as well as
the workpiece.
WARNING: DO NOT attempt to
modify tools or create accessories. Any
such alteration or modification is misuse
and could result in a hazardous condition
leading to possible serious injury. It will
also void the warranty.
CLEANING
DO NOT use solvents when cleaning
plastic parts. Most plastics are susceptible
to damage from various types of
commercial solvents and may be damaged
by their use. Use a clean cloth to remove
dirt, dust, oil, grease, etc.
WARNING: Do not at any time
allow brake fluids, gasoline, petroleum-
based products, penetrating oils, etc. to
come in contact with plastic parts. They
contain chemicals that can damage,
weaken or destroy plastic.
WARNING: Always wear safety
goggles or safety glasses with side shields
during all grinding operations. It is critical
that you also wear safety goggles or safety
glasses with side shields and a dust mask
while blowing dust out of the angle grinder
with an air jet. Failure to take these safety
precautions could result in permanent eye
or lung damage.
LUBRICATION
All of the bearings in this angle grinder are
lubricated with a sufficient amount of high-
grade lubricant for the life of the unit under
normal conditions. Therefore, no further
lubrication is required.
!
!
!
!
MAINTENANCE
ASSEMBLY AND OPERATION

19
PARTS DIAGRAM –MODEL 054-7234-4
1
2
3
4
5
67
8
9
10
11
12
139
14
15
16
17
18
19
20 21
22 23
24 25
26 12 27 28 729 30 31
37
32 33 34 35
36
38 39 40 41 42
43
45
44
46
47
48
49
50
51
52

20
WARNING: When servicing, use only JobMate™ replacement parts. Use of any
other parts may create a safety hazard or cause damage to the tool.
Any attempt to repair or replace electrical parts on this power tool may create a safety
hazard unless repair is performed by a qualified technician.
Always order by PART NUMBER, not by key number.
Key #
Part #
Part Name
Quantity
1
JP115X-01
Outside flange
1
2
JP115X-02
Inner flange
1
3
JP115X-03
Screw M5X16
1
4
JP115X-04
Wheel guard
1
5
JP115X-05
Nut
1
6
JP115X-06
Spindle
1
7
JP115X-07
Key
2
8
JP115X-08
Screw M4X12
4
9
JP115X-09
Spring washer
7
10
JP115X-10
Plain washer
4
11
JP115X-11
Gear box cover
1
12
JP115X-12
Bearing 6000
2
13
JP115X-13
Bearing cover
1
14
JP115X-14
Screw M4X8
3
15
JP115X-15
Gear
1
16
JP115X-16
Washer
1
17
JP115X-17
Cir-clip
1
18
JP115X-18
Bush
1
19
JP115X-19
Cir-clip for spindle lock button
1
20
JP115X-20
Screw ST4.2X20
4
21
JP115X-21
Spring
1
22
JP115X-22
Spindle lock button
1
23
JP115X-23
Gear box
1
24
JP115X-24
Side handle
1
25
JP115X-25
ScrewM8X16
1
26
JP115X-26
Pinion gear
1
27
JP115X-27
Bearing cover
1
28
JP115X-28
Screw M4X8
2
29
JP115X-29
Rotor
1
30
JP115X-30
Bearing 607
1
!
PARTS LIST –MODEL 054-7234-4