Craftsman 137.21239 User Manual
Operator’s Manual
12 in. SLIDING COMPOUND
MITER SAW WITH LASER TRAC
Model No. 137.212390
0
5
4
0
33.9
0
5
2
0
0
ϥ
CAUTION:
Before using this Miter Saw,
read this manual and follow
all its Safety Rules and
Operating Instructions
Safety Instructions
ϥ
Installation
ϥ
Operation
ϥ
Maintenance
ϥ
Parts List
®
Customer Help Line
For Technical Support
1-800-843-1682
Sears Parts &
Repair Center
1-800-488-1222
Sears, Roebuck and Co., Hoffman Estates, lL 60179 USA
Visit our Craftsman website: www.sears.com/craftsman
Part No. 137212390001 Printed in China
1
TABLE OF CONTENTS
SECTION PAGE
Warranty ............................................................................................... 2
Product Specifi cations .......................................................................... 3
Symbols................................................................................................. 4
Power Tool Safety ................................................................................ 5
Compound Miter Saw Safety ................................................................ 8
Electrical Requirements and Safety ...................................................... 9
Accessories and Attachments ............................................................... 12
Tools Needed for Assembly .................................................................. 13
Carton Contents ................................................................................... 14
Know Your Compound Miter Saw ........................................................ 15
Glossary of Terms ................................................................................ 16
Assembly and Adjustments .................................................................. 18
Operation .............................................................................................. 28
Maintenance ......................................................................................... 40
Troubleshooting Guide ......................................................................... 42
Parts List ............................................................................................... 44
WARNING
!
Some dust created by using power tools contains chemicals known to the state
of California to cause cancer and 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 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 fi lter out microscopic particles.
WARNING
!
To avoid electrical hazards, fi re hazards or damage to the tool, use proper
circuit protection.
This tool is wired at the factory for 110-120 Volt operation. It must be
connected to a 110-120 Volt / 15 Ampere time delay fuse or circuit breaker.
To avoid shock or fi re, replace power cord immediately if it is worn, cut or
damaged in any way.
Before using your tool, it is critical that you read and understand these
safety rules. Failure to follow these rules could result in serious injury to
you or damage to the tool.
2
WARRANTY
CRAFTSMAN ONE YEAR FULL WARRANTY
If this Craftsman tool fails due to a defect in material or workmanship within
one year from the date of purchase, call 1-800-4-MY-HOME
free repair (or replacement if repair proves impossible).
This warranty applies for only 90 days from the date of purchase if this product
is ever used for commercial or rental purposes.
This warranty does not include expendable parts, such as lamps, batteries,
bits or blades.
This warranty gives you specifi c legal rights, and you may also have other
rights which vary from state to state.
Sears, Roebuck and Co., Hoffman Estates, IL 60179
R
to arrange for
PRODUCT SPECIFICATIONS
MOTOR
Power Source ............................................................. 120V AC, 60Hz, 15 Amp
Speed ......................................................................... 4200 RPM (No load)
Brake .......................................................................... Electric
Double Insulated.......................................................... Yes
Motor Arbor Shaft Size................................................. 5/8 in.
BLADE SIZE
Diameter...................................................................... 12 in.
Arbor size.................................................................... 1 in. w/a 5/8 in. reducer
Rotating Table:
Diameter...................................................................... 11-13/16 in.
Miter Detent Stops ...................................................... 0, 15, 22.5, 31.6, 45º R & L
Bevel Positive Stops.................................................... 0, 33.9, 45º L
Cutting Capacity:
Crosscut....................................................................... 4 in. x 12-1/4 in.
Miter 45° R & L............................................................ 4 in. x 8-3/4 in. R & L
Bevel 45º L................................................................... 2-1/2 in. x 12-1/4 in. L
45° Miter and 45° Bevel .............................................. 2-1/2 in. x 8-3/4 in.
2007/12
3
SYMBOLS
WARNING ICONS
Your power tool and its Owner’s Manual may contain “WARNING ICONS”
(a picture symbol intended to alert you to, and/or instruct you how to avoid,
a potentially hazardous condition). Understanding and heeding these
symbols will help you operate your tool better and safer. Shown below are
some of the symbols you may see.
SAFETY ALERT: Precautions that involve your safety.
PROHIBITION
WEAR EYE PROTECTION: Always wear safety goggles or safety
glasses with side shields.
READ AND UNDERSTAND INSTRUCTION MANUAL: To reduce
the risk of injury, user and all bystanders must read and understand
instruction manual before using this product.
KEEP HANDS AWAY FROM BLADE: Failure to keep your hands away
from the blade will result in serious personal injury.
SUPPORT AND CLAMP WORK
DANGER
!
WARNING
!
CAUTION
!
CAUTION
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: used without the safety alert symbol indicates
a potentially hazardous situation which, if not avoided,
may result in property damage.
4
POWER TOOL SAFETY
GENERAL SAFETY INSTRUCTIONS
BEFORE USING THIS POWER TOOL
Safety is a combination of common
sense, staying alert and knowing how
to use your power tool.
CAUTION
To avoid mistakes that could cause
serious injury, do not plug the tool in
until you have read and understood
the following.
1. READ and become familiar
with the entire Operator’s
Manual. LEARN the tool’s
application, limitations and
possible hazards.
2. KEEP GUARDS IN PLACE and in
working order.
3. REMOVE ADJUSTING KEYS
AND WRENCHES. Form the habit
of checking to see that keys and
adjusting wrenches are removed
from the tool before turning ON.
4. KEEP WORK AREA CLEAN.
Cluttered areas and benches invite
accidents.
5. DO NOT USE IN DANGEROUS
ENVIRONMENTS. Do not use
power tools in damp locations, or
expose them to rain or snow. Keep
work area well lit.
6. KEEP CHILDREN AWAY. All
visitors and bystanders should be
kept a safe distance from work area.
7. MAKE WORKSHOP CHILD PROOF
with padlocks, master switches or by
removing starter keys.
8. DO NOT FORCE THE TOOL. It will
do the job better and safer at the
rate for which it was designed.
9. USE THE RIGHT TOOL. Do not
force the tool or an attachment to do
a job for which it was not designed.
10.USE PROPER EXTENSION
CORDS. 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. An
undersized cord will result in a drop
in line voltage and in loss of power
which will cause the tool to overheat.
The table on page 11 shows the
correct size to use depending on
cord length and nameplate ampere
rating. If in doubt, use the next
heavier gauge. The smaller the
gauge number, the heavier the cord.
11.WEAR PROPER APPAREL. Do
not wear loose clothing, gloves,
neckties, rings, bracelets or other
jewelry which may get caught in
moving parts. Nonslip footwear is
recommended. Wear protective hair
covering to contain long hair.
5
POWER TOOL SAFETY
12.ALWAYS WEAR EYE
PROTECTION. Any power
tool can throw foreign
objects into the eyes and
could cause permanent
eye damage. ALWAYS wear Safety
Goggles (not glasses) that comply
with ANSI Safety standard Z87.1.
Everyday eyeglasses have only
impact–resistant lenses. They
ARE NOT safety glasses. Safety
Goggles are available at Sears.
NOTE: Glasses or goggles not in
compliance with ANSI Z87.1 could
seriously injure you when they break.
13.WEAR A FACE MASK OR DUST
MASK. Sawing operation produces
dust.
14.SECURE WORK. Use clamps or
a vise to hold work when
practical. It is safer than
using your hand and
it frees both hands to
operate the tool.
15.DISCONNECT TOOLS FROM
POWER SOURCE before servicing,
and when changing accessories
such as blades, bits and cutters.
16.REDUCE THE RISK OF
UNINTENTIONAL STARTING.
Make sure switch is in the OFF
position before plugging the tool in.
17.USE RECOMMENDED
ACCESSORIES. Consult
this Operator’s Manual for
recommended accessories. The use
of improper accessories may cause
risk of injury to yourself or others.
18.NEVER STAND ON THE TOOL.
Serious injury could occur if the
tool is tipped or if the cutting tool is
unintentionally contacted.
19.CHECK FOR 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, 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.
20. NEVER LEAVE THE TOOL
RUNNING UNATTENDED. TURN
THE POWER “OFF”. Do not walk
away from a running tool until the
blade comes to a complete stop
and the tool is unplugged from the
power source.
21.DO NOT OVERREACH. Keep
proper footing and balance at all
times.
6
POWER TOOL SAFETY
22. MAINTAIN TOOLS WITH CARE.
Keep tools sharp and clean for best
and safest performance. Follow
instructions for lubricating and
changing accessories.
23. WARNING: Dust generated from
certain materials can be hazardous
to your health. Always operate saw
in well-ventilated area and provide
for proper dust removal.
24.
DANGER
!
People
with electronic devices, such as
pacemakers, should consult their
physician(s) before using this
product. Operation of electrical
equipment in close proximity to
a heart pacemaker could cause
interference or failure of the
pacemaker.
7
COMPOUND MITER SAW SAFETY
SPECIFIC SAFETY INSTRUCTIONS
FOR THIS COMPOUND MITER SAW
1. DO NOT operate the miter saw
until it is completely assembled
and installed according to these
instructions.
2. IF YOU ARE NOT thoroughly
familiar with the operation of miter
saws, seek guidance from your
supervisor, instructor or other
qualifi ed person.
3. ALWAYS hold the work fi rmly
against the fence and table.
DO NOT perform any operation
free hand (use clamp wherever
possible).
4. KEEP HANDS out of the path of the
saw blade. If the workpiece you are
cutting would cause your hands to
be within 8-3/4 in. of the saw blade,
the workpiece should be clamped in
place before making the cut.
5. BE SURE the blade is sharp, runs
freely and is free of vibration.
6. ALLOW the motor to come up to full
speed before starting a cut.
7. KEEP THE MOTOR AIR SLOTS
CLEAN and free of chips or dust.
8. ALWAYS MAKE SURE all handles
are tight before cutting, even if the
table is positioned in one of the
positive stops.
9. BE SURE both the blade and the
collar are clean and the arbor bolt is
tightened securely.
10.USE only blade collars specifi ed for
your saw.
11.NEVER use blades larger in
diameter than 12 inches.
12.NEVER apply lubricants to the
blade when it is running.
13.ALWAYS check the blade for
cracks or damage before operation.
Replace a cracked or damaged
blade immediately.
14.NEVER use blades recommended
for operation at less than 4200
RPM.
15.ALWAYS keep the blade guards in
place and use at all times.
16.NEVER reach around the saw
blade.
17.MAKE SURE the blade is not
contacting the workpiece before the
switch is turned ON.
18.IMPORTANT: After completing the
cut, release the trigger and wait for
the blade to stop before returning
the saw to the raised position.
19.MAKE SURE the blade has come
to a complete stop before removing
or securing the workpiece, changing
the workpiece angle or changing the
angle of the blade.
20. NEVER cut metals or masonry
products with this tool. This miter
saw is designed for use on wood
and wood-like products.
8
21.NEVER cut small pieces. If the
workpiece being cut would cause
your hand or fi ngers to be within
8-3/4 in. of the saw blade the
workpiece is too small.
22.PROVIDE adequate support to the
sides of the saw table for long work
pieces.
23.NEVER use the miter saw in an
area with fl ammable liquids or
gases.
24.NEVER use solvents to clean plastic
parts. Solvents could possibly
dissolve or otherwise damage the
material.
25.SHUT OFF the power before
servicing or adjusting the tool.
26.DISCONNECT the saw from
the power source and clean the
machine when fi nished using.
27.MAKE SURE the work area is clean
before leaving the machine.
ELECTRICAL REQUIREMENTS
POWER SUPPLY AND MOTOR
SPECIFICATIONS
The AC motor used in this saw is
a universal, nonreversible type.
See “MOTOR” in the “PRODUCT
SPECIFICATIONS” section on page 2.
WARNING
!
To avoid electrical hazards, fi re
hazards, or damage to the tool,
use proper circuit protection. Your
saw is wired at the factory for 120
V operation. Connect to a 120 V, 15
A circuit and use a 15 A time delay
fuse or circuit breaker. To avoid
shock or fi re, if power cord is worn
or cut, or damaged in any way, have
it replaced immediately.
28.SHOULD any part of your miter saw
be missing, damaged, or fail in any
way, or any electrical component
fail to perform properly, lock the
switch and remove the plug from
the power supply outlet. Replace
missing, damaged, or failed parts
before resuming operation.
9
ELECTRICAL REQUIREMENTS AND SAFETY
ELECTRICAL REQUIREMENTS –
cont’d
DOUBLE INSULATED
The power tool is double insulated to
provide a double thickness of insulation
between you and tool’s electrical
system. All exposed metal parts are
isolated from the internal metal motor
components with protecting insulation.
Replacement parts – When servicing,
use only identical replacement parts.
Polarized plugs – This saw has a plug
that looks like the one shown below:
To reduce the risk of electrical shock,
this saw has a polarized plug (one
blade is wider than the other). This plug
will fi t in a polarized outlet only one
way. If the plug does not fi t fully in the
outlet, reverse the plug. If it still does
not fi t, contact a qualifi ed electrician to
install the proper outlet. Do not change
the plug in any way.
WARNING
!
Double insulation does not take the
place of normal safety precautions
when operating this tool.
To avoid electrocution:
1. Use only identical replacement parts
when servicing a tool with double
insulation. Servicing should be
performed by a qualifi ed technician.
2. Do not use power tools in wet or
damp locations or expose them to
rain or snow.
MOTOR SAFETY PROTECTION
IMPORTANT
To avoid motor damage, the motor
should be blown out or vacuumed
frequently to keep sawdust from
interfering with the motor ventilation.
1. Connect this saw to a 120 V circuit.
This circuit must not be less than a
#12 wire with a 20 A time lag fuse or
a #14 wire with a 15 A time lag fuse.
NOTE: When using an extension
cord on a circuit with a #14 wire, the
extension cord must not exceed 25
feet in length.
2. If the motor will not start, release the
trigger switch immediately. UNPLUG
THE SAW. Check the saw blade to
make sure it turns freely. If the blade
is free, try to start the saw again. If
the motor still does not start, refer to
the TROUBLESHOOTING GUIDE.
3. If the tool suddenly stalls while
cutting wood, release the trigger
switch, unplug the tool and free the
blade from the wood. The saw may
now be started and the cut fi nished.
4. FUSES may “blow” or circuit
breakers may trip frequently if:
a. MOTOR is overloaded –
overloading can occur if you feed
10
ELECTRICAL REQUIREMENTS AND SAFETY
too rapidly or make too many
start/stops in a short time.
b. LINE VOLTAGE is more
than 10% above or below the
nameplate voltage rating. For
heavy loads, the voltage at motor
terminals must equal the voltage
specifi ed on the nameplate.
c. IMPROPER or dull saw blades
are used.
5. Most motor troubles may be traced
to loose or incorrect connections,
overload, low voltage or inadequate
power supply wiring. Always check
the connections, the load and supply
circuit if the motor doesn’t run well.
Check minimum gauge for the length
of cord you are using on the chart
below.
GUIDELINES FOR EXTENSION
CORDS
Use a proper extension cord. 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. 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 depending on 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 qualifi ed
person before using it. Protect your
extension cords from sharp objects,
excessive heat and damp or wet areas.
Use a separate electrical circuit
for your tools. This circuit must not
be less than a #12 wire with a 20 A
time lag fuse or a #14 wire with a 15
A time lag fuse. NOTE: When using
an extension cord on a circuit with
a #14 wire, the extension cord must
not exceed 25 feet in length. Before
connecting the tool to the power line,
make sure the switch is in the OFF
position and the electric current is
rated the same as the current stamped
on the motor nameplate, running at a
lower voltage will damage the motor.
MINIMUM GAUGE FOR EXTENSION CORDS (AWG)
(When using 120 volts only)
Ampere Rating Total length of Cord
More Than Not More Than 25ft. 50ft. 100ft. 150ft.
0 6 18 16 16 14
6 10 18 16 14 12
10 12 16 16 14 12
12 16 14 12 Not Recommended
CAUTION: In all cases make certain
the receptacle in question is
properly grounded. If you are not
sure, have
receptacle.
11
a certifi ed electrician check the
ACCESSORIES AND ATTACHMENTS
RECOMMENDED ACCESSORIES
WARNING
!
● Use only accessories
recommended for this miter
saw. Follow instructions that
accompany accessories. Use of
improper accessories may cause
hazards.
● The use of any cutting tool
except 12 in. saw blades which
meet the requirements under
recommended accessories
is prohibited. Do not use
accessories such as shaper
cutters or dado sets. Ferrous
metal cutting and the use of
abrasive wheels is prohibited.
● Do not attempt to modify this
tool or create accessories not
recommended for use with this
tool. Any such alteration or
modifi cation is misuse and could
result in a hazardous condition
leading to possible serious injury.
WARNING
!
Read warnings and conditions on
your CARBIDE TIPPED SAW BLADE.
Do not operate the saw without the
proper saw blade guard in place.
Carbide is a very hard but brittle
material. Care should be taken while
mounting, using, and storing carbide
tipped blades to prevent accidental
damage. Slight shocks, such as
striking the tip while handling, can
seriously damage the blade. Foreign
objects in the workpiece, such as
wire or nails, can also cause tips
to crack or break off. Before using,
always visually examine the blade
and tips for bent blade, cracks,
breakage, missing or loose tips, or
other damage. Do not use if damage
is suspected. Failure to heed safety
instructions and warnings can result
in serious bodily injury.
ACCESSORIES
Visit your Sears Hardware Department
or see the Sears Power and Hand Tool
Catalog to purchase recommended
accessories for this power tool.
WARNING
!
To avoid the risk of personal injury,
do not modify this power tool or use
accessories not recommended by
Sears.
12
TOOLS NEEDED FOR ASSEMBLY
Supplied
Blade Wrench
COMBINATION SQUARE MUST BE
TRUE
Should not gap or overlap when square
is fl ipped over (see dotted fi gure).
Draw light line
on board along
this edge.
Not supplied
Adjustable Wrench
Hex Key
Combination Square
Phillips Screwdriver
Slotted Screwdriver
Straight edge or a 3/4 in.
board, this edge must be
perfectly straight.
Should not gap or overlap
when square fl ipped over
(see dotted fi gure).
13
CARTON CONTENTS
UNPACKING YOUR MITER SAW
WARNING
!
To avoid injury from unexpected
starting or electrical shock, do not
plug the power cord into a source
of power during unpacking and
assembly. This cord must remain
unplugged whenever you are
working on the saw.
1. Remove the miter saw from the
carton.
IMPORTANT: Do not lift miter saw
by the trigger switch handle. It may
cause misalignment. Lift machine
by the built-in carry handle.
2. Place the saw on a secure
stationary work surface.
3. Separate all parts from the packing
material. Check each one with the
illustration to make certain all items
are accounted for, before discarding
any packing material.
WARNING
!
If any part is missing or damaged,
do not attempt to assemble the
miter saw, or plug in the power cord
until the missing or damaged part is
correctly replaced. To avoid electric
shock, use only identical replacement
parts when servicing double insulated
tools. Call 1-800-4-MY-HOME
replacement parts.
®
for
Hold-down Clamp
Miter Saw
Dust Bag
14
Blade Wrench
Miter Handle
KNOW YOUR SLIDING MITER SAW
Dust Bag
Carrying Handle
Bevel Detent Pin
Hold-down Clamp
Sliding Fence
Left Table Extension
Table
Mounting Hole
Stop Latch Knob
Switch Handle
Laser Guide
Table Insert
Base
Positive Stop Locking Lever
Lower Blade Guard
Blade
Miter Handle
Carrying Handle
Laser ON/OFF
Switch
ON/OFF Trigger
Switch
Motor
Positive Miter Detents
15
Slide Carriage
Lock Knob
Right Extension Table
Extension Table
Lock Knob
Stop Plate
Loading...