Craftsman 351.243971 User manual

Operator's ManuaU ®
15"
3 Speed
BAND SAW
Model No.
351.243971
CAUTION: Read and follow
all Safety Rules and Operating
Instructions before First Use
of this Product.
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
8659.01 Draft (03/31/97)

Warranty ............................................. 2
Safety Rules .................................... 2-3
Unpacking ............................................... 3
Assembly .................................. 3-5
installation .................................... 5-6
Operation .................................. 6-9
Maintenance ................................... 9
Troubleshooting ...................................... 10
Parts Illustration and List for Motor ........... 12-13
Parts I!lustration and List for Front .............. 14-15
Parts Illustration and List for Blade Guides ...... !6-17
Parts Illustration and List for Table ............. 18-19
Parts Illustration and List for Gear Box ......... 20-21
PREPARE WORK AREA FOR JOB
= Keep work area clean.. Cluttered work areas invite
accidents.
o Do not use power tools in dangerous environments.
Do not use power tools in damp or wet locations. Do
not expose power tools to rain..
o Work area should be properly lighted
• Proper electrical receptacle should be available for
tool. Three-prong plug should be plugged directly
into properly grounded, three-prong receptacle.
o Extension cords should have a grounding prong and
the three wires of the extension cord should be of
the correct gauge.
a Keep visitor-s at a safe distance from work area.
o Keep children out of workplace. Make workshop
childproof. Use padlocks, master' switches or remove
switch keys to prevent any unintentional use of
power tools..
FULL ONE YEAR WARRANTY ON
CRAFTSMAN BAND SAW
If within one full year from the date of purchase, this
Craftsman Band Saw fails due to a defect in material or
workmanship, Sears will repair it free of charge..
Warranty service is available by contacting Sears in-
home major brand repair service.. This warranty gives
you specific legal rights and you may also have other
rights which vary from state to state..
If this Band Saw is used for commercial purposes, this
warranty applies for only 90 days.
Sears, Roebuck and Co., Dept. 817 WA, Hoffman
Estates, IL 60179
WARNING: For your own safety, read all of the
instructions and precautions before operating tool
CAUTION: Always follow proper operating procedures
as defined in this manual -- even if you are familiar
with use of this or similar tool& Remember that being
careless for even a fraction of a second can result in
severe personal injury.
BE PREPARED FOR JOB
•Wear proper apparel. Do not wear loose clothing,
gloves, neckties, rings, bracelets or other jewelry
which may get caught in moving parts of machine,.
° Wear protective hair covering to contain long hair.
° Wear safety shoes with non-slip soles.
• Wear safety glasses complying with United States
ANSI Z87.,1. Everyday glasses have only impact
resistant lenses.. They are NOT safety glasses.
=Wear face mask or dust mask if operation is dusty
° Be alert and think clearly. Never operate power tools
when tired, intoxicated or when taking medications
that cause drowsiness.
TOOL SHOULD BE MAINTAINED
• Always unplug tool prior to inspection..
o Consult manual for specific maintaining and adjust-
ing procedures.
o Keep tool lubricated and clean for safest operation..
• Remove adjusting tools. Form habit of checking to
see that adjusting tools are removed before switch-
ing machine on
• Keep all parts in working order. Check to determine
that the guard or other parts will operate properly
and perform their intended function..
• Check for damaged parts.. Check for alignment of
moving parts, binding, breakage, mounting and any
other condition that may affect a tool's operation.
o A guard or other part that is damaged should be
properly repaired or' replaced. Do not perform
makeshift repair& (Use parts list provided to order'
replacement part&)
KNOW HOW TO USE TOOL
• Use right tool for job. Do not force tool or attachment
to do a job for which it was not designed.
= Disconnect tool when changing blade.
° Avoid accidental start-up. Make sure that the tool is
in the "off" position before plugging in.
• Do not force too! It will work most efficiently at the
rate for which it was designed_
• Keep hands away from moving parts and cutting
surfaces°
• Never leave tool running unattended.Turn the power
off and do not leave tool until it comes to a complete
stop,
o Do not overreach, Keep proper footing and balance.
o Never stand on tool, Serious injury could occur if tool
is tipped or if blade is unintentionally contacted
2

• Know your tool, Learn the tool's operation, applica-
tion and specific limitations,
o Use recommended accessories (refer to page t5)
Use of improper accessories may cause risk of
injury to persons.
° Handle workpiece correctly Protect hands from pos-
sible injury.
• Turn machine off if it jams. Blade jams when it digs
too deeply into workpiece, (Motor force keeps it
stuck in the work,,) Do not remove summed or cut off
pieces until the saw is turned off, unplugged and the
blade has stopped,
WARNING: The operation of any power tool can result
in foreign objects being thrown into the eyes, which can
result in severe eye damage. Always wear safety gog-
gles complying with United States ANSI Z87 1 (shown
on package) before commencing power tool operation.
Safety goggles are available through your Sears cata-
logo
Refer to Figure 1.
Check for shipping damage. If damage has occurred, a
claim must be filed with carrier. Check for complete-
hess. Immediately report missing parts to dealer,
The band saw comes assembled as one unit. Additional
parts which need to be fastened to the saw should be
located and accounted for before assembling: _._
A
B
C
D
E
F
G
H
1
J
K
L
Table stud
V-belt
Motor pulley with set screw
Flat washer, (3)
Table with back trunnion attached
Trunnion rod with acorn nut
Knob, internal threads
Knob, external threads
Rip fence with knob
Miter gauge assembly
Table insert
Front trunnion with bolts and lock washers
D
Figure 1-- Unpacking
3
M Motor mounting hardware
N Knob, internal threads
Not shown: Motor wiring bag: strain relief, serrated
washer and wire nuts
IMPORTANT; Table is coated with a protectant. To
ensure proper fit and operatibn, remove coating.
Coating is easily removed with mild solvents, such as
mineral spirits, and a soft cloth. Avoid getting solution
on paint or any of the rubber or plastic parts, Solvents
may deteriorate these finishes Use soap and water on
paint, plastic or rubber components.. After cleaning,
cover all exposed surfaces with a light coating of oil
Paste wax is recommended for table top.
WARNING: Never use highly volatile solvents Non
flammable solvents are recommended to avoid possible
fire hazard
Refer to Figure 5, 6, 8, 9 and 10.
CAUTION: Do not attempt assembly if parts are miss-
ing. Use operator's manual to order replacement parts.
ATTACH TABLE
Refer to Figure 9.
o Table (Key No 1) is attached to frame with two cast
iron trunnions.
o Finger tighten one1 socket head bolt with washer
(Key Nos 3 and 4) on left side of front trunnion
(Key noo2) into table,.
o Bring table to frame by inserting back of blade into
slot.. Position table with back trunnion (Key No, 5) on
guide posts which are welded to frame.
- Position front trunnion so it rides on guide post.
Attach externally threaded knob with flat washer
(Key No& 12 and 11) to secure back trunnion.
o Insert trunnion rod with acorn nut and flat washer
(Key No& 10 and 11) through other guide post and
attach the internally threaded knob with flat washer
(Key Nos 12 and 1I) to the trunnion rod.,
• Mount second bolt with washer on front trunnion.
Position front trunnion flat against bottom of table
and tighten internally threaded knob to secure..
° Tighten socket bolts (Key No..3) to secure trunnions
to table, Install table stud (Key No !6),
SET HORIZONTAL STOP
Refer to Figure 9.
• When table is attached to frame, a bolt (Key No..14)
is used for a horizontal stop..
° Loosen trunnion knobs and set table at 90° to blade
using a square
e Secure position of table with knobs..
. Adjust bolt to contact bottom edge of table
. Lock bolt in position with hex nut (Key No 15)

ATTACH RIP FENCE
Refer to Figure 9,
o Rip fence (Key No 19) rides in the slot of table (Key
No_1).
• Slide rip fence into slot
a Hold rip fence to table and fasten by threading knob
(Key No,,20) into rip fence°
- Rip fence can be repositioned by loosening knob
ATTACH GUIDE LOCKING KNOB
Refer to Figure 8.
= Slide 5A,"flat washer (Key No, 37) on hex head bolt
(Key No. 32),
* Tighten knob (Key No,.30) on to hex head bolt
ALIGN TABLE
Refe_ to Figure 9,
The table must be aligned properly so that the blade
is at a right angle to the table and that the rip fence
is aligned with the blade,
. Lock the table in the horizontal position, Mount the
rip fence on the table_Slide the dp fence next to, but
not touching, the blade,, Lock the rip fence,
• Check that the blade is aligned parallel with the rip
fence,, If the blade and fence are not parallel, loosen
knobs (Key Nos. 12 and 13) on the trunnions (Key
Nos. 2 and 5), Adjust the table position so that the
blade and rip fence are parallel Secure the table
position by tightening the knobs
. After assembly, the table has to be aligned in order
to have the blade running through the center of the
slot in the table insert.
• To move table sideways, loosen the four socket head
bolts (Key No. 3) that secure the trunnions to the
table. Move table to left or right until blade runs
through the center of slot. Tighten bolts and make
sure that table stays in position while bolts are being
tightened,
MOUNT MOTOR
Refer to Figure 6,
=Mount motor to motor mount plate (Key No, 9) using
carriage bolts, lock washers, and hex nuts provided
(Key Nos, 19, 21 and 22).
° Finger tighten hex nuts. Motor will need to be reposi-
tioned to obtain proper' V-belt tension.
WIRE MOTOR
Refer to Figures 2 and 6.,
The motor should be wired for 115 volts and counter-
clockwise rotation as viewed from shaft end of motor. A
schematic supplied with motor will describe proper
wiring procedures. Be sure to wire motor for counter-
clockwise rotation facing shaft end,
Remove thin hex nut from strain relief. Insert strain
relief into 7/£,,knockout in shaft side of motor connection
box, Secure with thin hex nut..Pass motor cord through
Blue
Black t
Orange
Red
White t
Yellow
Figure 2 - Wiring Schematic
115 Volts
strain relief. Secure motor cord by tightening thick hex
nut Connect and insulate wires properly using wire
nuts provided. Wire motor to rnotor cord using the
schematic shown in Figure 2
WARNING: All electrical connections must be per-
formed by a qualified electrician..
GROUND MOTOR
Green wire of motor cord and serrated washer must be
connected to motor body. Remove green grounding
screw located in connection box of motor_ Position
green wire ring terminal onto grounding screw and ser-
rated washer next to ring terminal, Secure serrated
washer and green wire in motor cord to motor body
NOTE: Be sure that the serrated washer is secured
directly in contact with motor body.
INSTALL MOTOR PULLEY
Refer-to Figure 10.
• Slide motor pulley (Key No,,26) onto motor shaft with
key in motor shaft groove and motor pulley keyway,,
o Use straightedge across outer surface of both motor
and idler pulley (Key No, 23) to make sure motor pul-
ley and idler pulley are parallel,
° If the motor pulley and idler pulley are not parallel,
the band saw may develop excessive vibration,,
Reposition motor if necessary,
. When pulleys are aligned, secure the position of the
motor pulley with set screw (Key Nov27),,
INSTALL V-BELT
Refer to Figures 5, 6 and 10_
= Band saw uses a step-pulley drive system to provide
a selection of blade speeds,
oLoosen hex head bolt and hex nut (Figure 6, Key
Nos,. 11 and 14)Place V-belt (Figure 9, Key No 25)
on idler pulley and motor pulley (Figure 9, Key Nos.
23 and 26) with ",/-belt in desired location on pu!leys
(See Figure 5, Blade Speeds, page 8)
• Do not over tighten V-belts. Excessive tension on V-
belt will reduce life of belt, Belt is properly tensioned
when light pressure applied to midpoint of the belt
produces about Y2"deflection.
• Tension V-belt by pushing down on motor mount
plate and tightening hex head bolt and hex nut,
4

MOUNT SAW TO FLOOR
o If saw is not properly positioned on a flat surface, it
may develop excessive vibration.
o Mount to a fiat, level surface through holes on top of
base..
Refer to Figures 3 and 4,
MOTOR
The 115 Volt AC motor has the following specifications:
Horsepower ..................................... 3,4
Voltage ....................................... 115
Amps ........................................... 11.5
Hertz ........................................ 60
Phase .......................................... Single
RPM ............................................... 1725
POWER SOURCE
The motor is designed for operation on the voltage and
frequency specified,. Normal loads will be handled safe-
ly on voltages not more than 10% above or below the
specified voltage.
Running the unit on voltages which are not within the
range may cause overheating and motor burn-out.
Heavy loads require that the voltage at motor terminals
be no less than the voltage specified,. Power supply to
the motor is controlled by a double pole locking rocker
switch_ Remove the key to prevent unauthorized use.
GROUNDING INSTRUCTIONS
WARNING: improper connection of equipment ground-
ing conductor can result in the risk of electrical shock.
Equipment should be grounded while in use to proiect
operator from electrical shock_
Check with a qualified electrician if grounding instruc-
tions are not understood or if in doubt as to whether the
tool is properly grounded,.
This tool is equipped with an approved 3 conductor
cord rated at 150V and a three prong grounding type
plug for your protection against shock hazards.
Grounding plug should be plugged directly into a prop-
erly installed and grounded 3-prong grounding-type
receptacle, as shown (Figure 3).
Properly Grounded Outlet -'-"-'_{['--_"=----H
Grounding Prong "'_ (_ I1
Figure 3 - 3-Prong Receptacle
Do not remove or alter grounding prong in any manner,
In the event of a malfunction or breakdown, grounding
provides a path of least resistance for electrical shock,.
WARNING: Do not permit fingers to touch the termi-
nals of plug when installing or removing from outlet,
Plug must be plugged into matching outlet that is prop-
erly installed and grounded in accordance with all local
codes and ordinances Do not modify plug provided, If it
will not fit in outlet, have proper outlet installed by a
qualified electrician,
Inspect tool cords periodically, and if damaged, have
them repaired by an authorized service facility,
Green (or green and yellow) conductor in cord is the
grounding wire, If repair or replacement of the electric
cord or plug is necessary, do not connect the green (or
green and yellow) wire to a live terminal,.
Where a 2-prong wall receptacle is encountered, it
must be replaced with a properly grounded 3-prong
receptacle installed in accordance with National Electric
Code and local codes and ordinances.
WARNING: This work should be performed by a quali-
fied electrician,
A temporary 3-prong to 2-prong grounding adapter (see
Figure 4) is available for connecting plugs to a two pole
outlet if it is properly grounded
Grounding Lug
__ Make Sure
Adapter ........._ ,This iS
3-Prong Connected To
A Known
Ground
2-Prong Receptacle
Figure 4 -2-Prong Receptacle with Adapter
Do not use a 3-prong to 2-prong grounding adapter
unless permitted by local and national codes and ordi-
nances. (A 3-prong to 2-prong grounding adapter is not
permitted in Canada) Where permitted, the rigid green
tab or terminal on the side of the adapter must be
securely connected to a permanent electrical ground
such as a properly grounded water pipe, a properly
grounded outlet box or a properly grounded wire system.
Many cover plate screws, water pipes and outlet boxes
are not properly grounded To ensure proper ground,
grounding means must be tested by a qualified electri-
cian,
EXTENSION CORDS
o The use of any extension cord will cause some drop
in voltage and loss of power
o Wires of the extension cord must be of sufficient size
to carry the current and maintain adequate voltage.
o Use the table to determine the minimum wire size
(A.W G ) extension cord
5

o Use only 3-wire extension cords having 3-prong
grounding type plugs and 3-pole receptacles which
accept the tool plug.
o If the extension cord is worn, cut or damaged in any
way, replace it immediately
EXTENSION CORD LENGTH
Wire Size A.W.G.
Up to 50 ft............................................... 16
NOTE: Using extension cords over 50 ft. long is not
recommended..
Refer to Figures 5, 6, 7, 8, 9 and 10.
The 15", 3-speed vertical band saw for' cutting ferrous
and non-ferrous metals, The band saw features a uni-
tized frame of welded steel construction and a solid
cast iron work surface to ensure durability.
Table tilts to 45° and has a miter gauge and precision
machined rip fence for performing many different opera-
tions_ Fifteen inch balanced cast aluminum wheels with
ball bearings and rubber treads accommodate blade
widths up to _A".
A convenient tensioning and tracking mechanism
assures that changing blades is not cumbersome. Saw
can also accommodate blade widths up to ¾" for many
types of cuts.
SPECIFICATIONS
Depth of throat ............................... 14%"
Maximum depth of cut ............................. 8½"
Table size ...................................... 15 x 15"
Table tilt ...................................... 0 to 45°
Wheel diameter ............................. 15"
Blade length ............................... 111"
Blade width ................................ _A_to 3A"
Blade speeds .................... 80, 150 and 200 FPM
Overall dimensions ................... 69 x 27 x 21"
Motor ............................ Part No..8377.00
........................... TEFC, _ HP, 1725 RPM
Blades ............. No. 26660, 1,_,,Carbon Blade, 14 TPI
CAUTION: Always observe the following safety
precautions:
, Make sure that blade guides and thrust bearings are
positioned and adjusted correctly to prevent side-
ways and rearward movement of the blade. Adjust
upper guide to just clear workpiece_
° Check to make sure blade is tensioned and tracking
properly. Do not over tension the blade in order to
prevent premature blade wear and breakage. Avoid
under tensioning to eliminate back and forth, side to
side blade movement as it cuts.
° Use proper blade and speed for the cutting operation.
o After turning saw on, allow blade to come to full
speed before attempting any cutting operation.
• Support workpiece properly and use a smooth
steady feed to guide work through the cut. Use push
sticks or push blocks when required,.
° Keep hands away and out of line with moving parts.
o Always wear eye protection.
REMOVING BLADE
Refer to Figures 7 and 9.
WARNING: Disconnect band saw from power source
when changing or adjusting blades. Wear leather gloves
when handling band saw blades. Never wear gloves
when operating saw.
° Loosen hex nut (Figure 7, Key No1.30) and rotate
handwheel (Figure 7, Key No. 23) to release blade
tension Be careful; blade may spring from saw when
tension is released. Remove table stud (Figure 9,
Key No. 16), take out the released blade and replace
with another btade_
INSTALLING BLADE
• Although many of the adjustments may not be altered
when blade is removed, every adjustment should be
checked prior to using a newly installed blade.
• Follow safety precautions every time saw is operated..
° Make sure blade teeth are pointing down towards
table. "[iJrn blade inside out if necessary.
• Slip new blade into table slot and over upper and
lower' blade wheels and center' blade on blade
wheels. Slide blade in between blade guides.
Replace table stud.
o Tension and track blade as described in the following
sections.
TENSIONING BLADE
Refer to Figure 7.
° Tension blade by rotating handwheel (Key No. 23). Be
sure blade guides do not interfere with blade path..
• Tighten blade until it is properly tensioned_
° A properly tensioned blade will ring slightly when back
of blade is plucked (like a string on an instrument).
NOTE: Check tension of new blade. Additional tension
may be required after a few minutes of operation.
TRACKING BLADE
Refer To Figure 7,
,= Track blade after it has been tensioned Achange in
blade tension will affect wheel alignmenL
oProper tracking is achieved when drive and idler
wheels are aligned, Knob (Key No, 29) is used to tilt
tracking bar (Key No,,t3) and align blade wheels.
°Loosen nut (Key No. 30) which locks tracking knob
(Key No, 29),.Turn idler'wheel (Key Noo7) by hand
and observe how blade rides on wheels.
6

o if blade rides away from cabinet, turn knob clockwise
to tilt idler wheel uF
• if blade rides into cabinet, turn tracking knob coun-
terclockwise,
= When blade is tracking properly, lock position by
holding knob and tightening nut (Key No. 30) against
the cabinet.
ALIGNMENT OF DRIVE WHEEL
Refer to Figure 10,
NOTE: Only attempt adjusting drive wheel alignment if
blade cannot be properly tracked with tracking adjust-
ment alone.,
o A blade under high tension may also putt drive wheel
out of alignmenL
o Adjust alignment of drive wheel with set screws and
hex head bolts (Key Nos, 8 and 30),
BLADE GUIDES
NOTE: Adjust blade guides only after blade has been
properly tensioned and tracked,
° Blade guides support blade at sides and rear of
blade, and prevent twisting or deflection°
Blade guides should not touch blade when no work-
piece is in contact with blade. Adjust guides as
described in following sections.
UPPER BLADE GUIDES
Refer to Figure 8,
Upper blade guides employ guide pins for side sup-
port and a ball bearing on an adjusting pin at rear,
• Upper guide bracket (Key No. 13) should be posi-
tioned so guide on either side of blade will support
as much of blade width as possible without interfer-
ing with the tooth set,
oAdjust bracket depth by loosening bolts (Key Nos, 9
and t2) and sliding brackets into position_ Secure
position of upper guide casting by tightening bolts,
o Loosen set screws (Key No. 15) and adjust guide
pins (Key 1'4o,14) to side of blade, Use a feeler
gauge to check that guide pins are .002" away from
blade_
•Lock adjustment by tightening set screws.
° Adjust thrust bearing (Key No. 17) at rear of blade by
loosening set screw (Key No, 15)..
oPosition thrust bearing (Key No, 17) .002" away from
back of blade.
• Secure position of thrust bearing by tightening set
screw,
• Adjust the height of upper guide casting to clear the
workpiece by _A".Loosen knob (Key No. 30) and
rotate height adjustment knob (Key No. 22) until
upper blade guide bracket clears workpiece by ¼'L
Tighten knob (Key No, 30).
LOWER BLADE GUIDES
Refer to Figure 8
° Lower blade guides employ two guide blocks for side
supporL Lower guide bracket is spaced close to
table surface to minimize unsupported length of
blade.
Loosen bolt (Key No 19) to position lower guide
bracket on alignment block (Key No, 31)Adjust
lower guide bracket so guide blocks do not interfere
with blade set, Loosen set screws (Key No. 23) for
guide blocks (Key Nos. 21 and 34) and adjust guide
blocks to .002" from each side of blade,
Adjust thrust bearing (Key No, 36) at rear of blade by
.!oosening set screw (Key No, 23)_ Position thrust
bearing ,002" away from back of blade, Secure posi-
tion of thrust bearing by tightening set screw,
BLADE SELECTION
o Blades vary depending on type of material, size of
workpiece and type of cut that is being performed,
• Characteristics which make blades different are
width, thickness and pitch
BLADE WIDTH
o Width of blade describes distance from tip of a tooth
to back of blade_
o Width of blade will affect rigidity of blade A wider
blade will wander less and produce a straighter cut.
Width of blade also limits the smallest radius which
can be cuL A ¼" wide blade can cut about a 1A"
radius,
BLADE THICKNESS
oBlade thickness describes the distance between
sides of blade. A thicker blade has more rigidity and
stronger teeth,
• A narrow thick blade would be used to cut curves
while a wide thin blade would be used to make long,
straight cut&
BLADE PITCH
=Pitch describes number of teeth per inch or tooth
size. A blade with more teeth per inch will produce a
smoother cut°
eThe type of material being cut determines number of
teeth which should be in contact with work.
= For soft materials, the proper blade has between 4
and 8 teeth per inch
= When cutting hard materials, where shocking is more
detrimental, use a blade with 8 to 12 teeth per inch,
,_ There should always be at least three teeth in con-
tact with cut to avoid shocking blade
• Blade shocking occurs when pitch is too large and
blade tooth encounters too much material° This can
strip teeth from blade
• Blade manufacturers are prepared to supply informa-
tion about blades for specific applications,

BLADE SPEED
• The amount of force with which the blade cuts is
determined by speed.
oHigh cutting speeds are used on soft materials
where less force is needed and a high rate of materi-
al removal is desired.
° Low cutting speeds are used on hard materials
when more force is required,
o To change blade speed, position V-belt in proper
configuration (see Figure 5) Reposition and tension
V-belt as described in the next section,
80 FPM ............................. Steel and steel alloys
150 FPM .......................... Cast iron and bronze
200 FPM ............... Aluminum, brass and copper
ji,l
80 FPM 150 FPM 200 FPM
Figure 5 -Blade Speeds
REPOSITIONING V-BELT
Refer to Figures 5, 6 and 10o
° Blade speed is determined by the position of the
V-belt on the idler and motor pulleys (Figure 10, Key
Nos. 23 and 26)., Blade speed is changed by chang-
ing pulley position of V-belL
= Be sure to disconnect saw from power and turn saw
OFF before attempting to change blade spee&
• To change blade speed loosen motor mount plate
(Figure 6, Key Nov 9) by loosening hex nut on hex
head bolt (Figure 6, Key Nos 14 and 11). Position V-
belt on motor' and idler pulleys as required. See
Figure 5, Blade Speeds, for recommended pulley
and belt settings.
= Tension V-belt by pushing down on motor' mount
plate and tightening nut on the hex head bolt. Be
sure nut and bolt are tight. Belt is properly tensioned
when light pressure applied to midpoint of the belt
produces about Y2"deflection., Do not over tighten
V-belt.
TYPE OF CUT
• Rip fence guides workpiece to produce straight cuts
on longer pieces.
• Contour cutting is done by guiding workpiece free-
handed to produce curved shape&
° Beveled cutting can be done by tilting table and
using proper' work guide method.
= Regardless of which work guiding method is used, a
workpiece which overhangs table by more than 7"
should be properly supported by support stands.
(See Recommended Accessories, page 15.)
RIP FENCE OPERATION
Refer to Figure 9.
o Rip fence can be used to guide boards with one
square edge past blade when table is aligned prop-
erly
o Set rip fence to desired width of cut on inside of
throat. Remember to include the thickness of materi-
al that will be removed by blade.
= Use a square to measure from tip of a tooth to
fence. Lock fence securely with knob (Key No, 20),
,, The portion of material between blade and fence is
considered the workpiece, Material on outside and
behind cut isthe scrap materiai which is being cut
off Use the right hand to keep work against fence_
•Do not push on scrap portion of the work, This could
pinch or bind blade
•Avoid passing hands beyond the cut Use push
sticks or push blocks to finish cuts and pass work-
piece away from blade.
CONTOUR SAWING
° When contour sawing, use both hands to keep work-
piece flat against table and guided along desired
path.
= Avoid positioning hands in line with blade° If hands
slip they could contact blade.
• Try to stand to front of the saw and use hands over
the portion of table which is to right of blade and
before cuL
° Cut small corners by sawing around them. Saw to
remove scrap until desired shape is obtained_
BEVEL CUTTING
Refer to Figure 9o
o Perform a bevel operation by tilting table° Loosen
knobs (Key Nos. 12 and 13) and tilt table to desired
position_
° Use a square or protractor to set angle and lock
table in position with knob. Use caution when sup-
porting work while bevel cutting_ Do not allow work
to hang on blade_
MITER GAUGE
°Use miter gauge for securing and holding workpiece
at desired angle to produce angled cuts. Use scale
to adjust gauge to desired angle.
oNever use miter' gauge and rip fence at the same
time. The blade might bind in the workpiece.
Operator could be injured and/or workpiece could be
damaged
8

BLADE CLEANING BRUSH
Refer to Figure 7.
o Make sure that brush (Key No. 36) is in contact with
wheel to properly remove foreign particles from drive
wheel.
WARNING: Make certain that unit is disconnected
from power source before attempting to service or
remove any component.,
CLEANING
• Keep machine and workshop clean. Do not allow
sawdust to accumulate on band saw,,
• Keep wheels clean. Debris on wheels will cause
poor tracking and blade slippage,
° Keep mechanisms and threaded or sliding surfaces
clean and free of foreign particles.
= Operate band saw with a dust collector to minimize
clean upo
LUBRICATION
• The shielded ball bearings are permanently lubricat-
ed and require no further lubrication.
= Small amounts of machine oil can be applied to belt
tension mechanisms and threaded or sliding sur-
faces,
= Occasionally apply a coat of automobile type wax to
table top to keep it slick and corrosion free.
KEEP BAND SAW IN REPAIR
oIf power cord is worn or cut in any way, have it
replaced_
o Replace V-belt and blade when they are worn.
Replace any damaged or missing part.
= Use parts list to order parts.
9

SYMPTOM
Excessive blade breakage
!Premature blade dulling
POSSIBLE CAUSE(S) ................
1.Material not secure on table
2. incorrect speed or feed
3_Blade too coarse for material
4_incorrect blade tension
5,Teeth in contact with work before
sawing
6, Blade rubs on wheel flange
i7. Misaligned guides
'8, Blade too thick for' wheel diameter'
9..Cracking at weld
1,Blade too coarse
2. Excessive blade speed
3_Inadequate feed pressure
4.,Hard spots or-scale in or on
material
5.,Work hardening of workpiece
6. Blade installed backwards
7. Insufficient blade tension
Crooked cuts 1,Work not square
Rough cuts
Blade is twisting or unusual
wear on side/back of blade
Teeth ripping from blade
Motor running too hot
CORRECTIVE ACTION
il. Squarely place work on table
2. Check Blade Speed (Figure 5, page 8)
3, Usefiner pitch blade . _ . .•
4, Tension blade properly; see "Operation" "
5, Place blade in contact with work after saw is
started and has reached full speed
6_Adjust wheel alignment properly
7. Adjust blade guides properly
8oUse thinner blade
9_Replace blade
2,.Rate of feed too great
3_Blade guides not adjusted properly
4_Insufficient blade tension 4_
5, Upper blade guide too far 5.
from workpiece
6,,Dull blade 6o
7. Incorrect speed 7,_
8oBlade guide assembly loose or 8.
blade thrust bearing loose
1.Too much speed or feed 1_
2._Blade too coarse 2.
1,,Cut is binding blade t_
2. Blade guides or bearing worn 2.
3. Blade guides or bearings not 3_
adjusted properly
4, Blade guide brackets loose 4, Tighten properly
1,Teeth too coarse for work.........................1. use blade wii'hfiner teeth
2_Rate of feed too great 2. Decrease feed rate
3oVibrating wor kpiece 3.
4,Teeth filling with material 4,
IoBlade tension too great 1.
2. Blade too coarse for' work 2.
(typical when cutting pipe)
3, Blade too fine for work (typical
when cutting slick or soft material)
4, Excessive dirt and chips
1. Use finer tooth blade
2. Try lower speed
3oGently increase pressure
4.. Reduce speed; increase rate of feed for
scale and change blades for hard spots
5. Increase rate of feed
6. Remove blade, twist inside out and reinstall
blade
7. Tension blade properly; see "Operation"
1_Use rip fence; adjust tilt of table at 90° to
blade
2. Reduce rate of feed
3. Move both guide blocks within .002" from
blade (use gauge)
Tension blade properly; see "Operation"
Adjust upper guide to just clear workpiece
by ¼"
Replace blade
Check Blade Speed; see Figure 5, page 8 for
recommended speeds
Tighten blade thrust bearing within .002"
behind blade back
Reduce speed or feed
Replace with finer blade
Decrease feed pressure
Replace
Adjust blade guides; see "Operation"
Hold workpiece firmly
Use blade with coarser teeth
Reduce tension on blade
Use blade with finer teeth
3, Use blade with coarser teeth
Saw will not start Loose electrical connections Have qualified electrician check electrical
connections
10
4oClean thoroughly; vacuum motor and speed
change mechanism

Service Record
Craftsman Band Saw
DATE MAINTENANCE PERFORMED REPLACEMENTPARTS REQUIRED I
11

Model 351.243971
Figure 6 -Replacement Parts illustration for Motor
2
25
2O
30
27
424
6
/14 ti
23
17
12

/
_Y
NO.
1
2
3
4
5
6
7
8
9
10
11
t2
t3
14
15
16
17
t8
19
2O
21
22
23
24
25
26
27
28
29
3O
PART NO.
0423_00
3668,,00
0361 o00
46-58368-3
STD840407
829200
8293.B0
0168_00
8294°00
8295.01
8296°00
STD551037
8297,00
STD541037
8299.00
83oo,oo
STD5612t0
STD835020
5188.00
7256.00
STD852008
STD840812
0440,0O
8377,00
8685.00
DESCRIPTION
Switch
Switch Plate
5-0o8x 8mm Pan Head Screw
4mm Serrated Washer*
4-0.7mm Hex Nut*
Line Cord
Motor Cord
Strain Relief
Motor Mount Plate
Slide Bracket
%-16 x 6½" Hex Head Bolt
¾" Flat Washer*
Spacer
¾"-16 Hex Nut*
Pivot Bracket
Clevis Pin
'/£x 1" Cotter Pin*
8-1,25 x 20mm Hex Head Bolt*
8-1o25 x 20mm Carriage Bolt
Strain Relief
8ram Lock Washer*
8-'to25mm Hex Nut*
¾8x _6 x ¾" Key
Motor With Key
4-0,7 x 15mm Pan Head Screw
8172.0!
5199,00
0131,00
0853,0O
5199,O1
Strain Relief Plate
Wire Nut
Cord Clamp
5-0°8 x 15mm Pan Head Screw
Wire Nut
* Standard hardware item available locally,
QTY.
1
1
8
2
1
1
1
2
't
1
1
4
1
1
1
1
1
4j
4 '
!
8
1
1
2
2
13

Model 351.243971
Figure 7 - Replacement Parts illustration for Front
2
4
35
31
23 6
22
t
3;
I"
39
30
26
3
4
\8
\34
14

KEY
NO.
3
4
5
6
7
8
9
10
11
12
t3
14
15
PART NO.
N/A
8302°00
830300
366300
8304.00
0964,O0
830500
830&00
383&00
STD315238
6358o01
0341 o00
3605.01
STD835025
STD3t5235
DESCRIPTION QTY.
Frame 1
Upper Cabinet Door 1
Lower Cabinet Door 1
Knob (External Threads) 2
Latch 2
6-1n0 x 6mm Set Screw 3
Idler Wheel 1
Rubber Tread 2
3BMI-40 Retaining Ring 2
6203LL Bearing* 2
Idler Shaft !
3AM1-17 Retaining Ring 1
Tracking Bar 1
8-t,25 x 25mm Hex Hd, Bolt* 1
8mm Lock Washer* 1
16 3608,00
r17 3606,,00
18 3609°00
19 0836°00
2O STD851008
21 STD840812
22 3612,01
A Not Shown
* Standard hardware item available locally,
Recommended Accessories
&....Support Stand ........... _9214t7
/, ¼" Carbon Blade. 14 TPI _926660
Tracking Adjustment Bracket 1
Tension Bracket 1
Upper Cabinet Support 2
8-1o25 x 70mm Hex HdoBolt 2
8mm Flat Washer* 5
8-1 25mm Hex Nut* 4
Threaded Shaft 1
KEY
NO.
23
24
25
26
27
28
29
30
3!
32
PART NO.
5598,01
DESCRIPTION QTY.
Handwheel 1
Tension Support 1
6-1_0 x 16ram Hex Hd, Bolt* 8
6mm Flat Washer* 16
6-1,0mm Hex Nut* 8
Tensi0n Niit ......................
Tracking Knob 1
%6"-18 Hex Nut* t
10-1,5mm Eye Bolt 1
10mm Flat Washer* 1
36t&00
iSTD833016
STD851006
STD840610
3607°00
8307°00
STD541031
8308°00
STD8510!0
33 STD841015' i0-1,5mm Rex Nut* '................"t
34 847800
35 8310o00
36 3621,,00
37 3620,00
38 36t9,,00
39 0853°00
40 STD851005
41 8439,00
D840508
Drive Wheel
20-1.5mm Hex Nut
(Left Hand Thread)
Brush
Bracket
#8-18 x ¾" Thread
Forming Screw
5-&8 x 15mm Pan Hd. Screw
5mm Flat Washer*
17ram Waw washer .....
5-0,8mm Hex Nut*
1
1
1
1
2
1
1
1
!
15

Model 351.243971
Figure 8 - Replacement Parts Illustration for Blade Guides
10 12 22
... _23 ._ "24 \23
37
18
16

KEY
NO.
.............
2
3
4
5
7
8
9
10
11
12
13
14
15
16
17
18
!9 :
20
21
22
23
24 i
i
26 I
27 I
28 1
29 1
3O I
...i
31 1
32 1
33 r
34 _
35 I
36 I
37 I
PART NO,
8311 00
831200
604500
8313.01
3619,01
STD851005
8314.00
860700
STD833025
STD851006
STD840610
STD833016
8316400
8317o00
0958.00
8318°00
STD315205
1434.00
STD833012
8319.00
8298°00
9582 B0
0964.00
STD851010
8322.00
8323.00
1097.00
9564.00
8324.00
8352.00
6376 mOO
8325,15
835&00
8354°00
8355.00
STD315485
STD551031
DESCRIPTION
Guide Bar
Rack
5-08 x 20mm Socket Head Bolt
Blade Guard
Thread Forming Screw
5mm Flat Washer*
Guide Attaching Bracket
Guide Depth Bracket
6-1,0 x 25mm Hex Head Bolt*
6mm Flat Washer*
6-1 _0mm Hex Nut*
6-1.0 x 16mm Hex Head Bolt*
Upper Guide Bracket
Guide Pin
8-1.25 x 8mm Set Screw
Bearing Pin
6200LL Bearing*
3CM1-10 E-Ring
6-1o0 x 12mm Hex Head Bolt*
Guide Casting
Guide Block
Knob (Internal Threads)
6-1,,0 x 6mm Set Screw
10ram Flat Washer*
Pinion Shaft Assembly
3CMI-8 E-Ring
6-1 ,,0x 35mm Socket Head Bolt
Spring
Positioning Block
Knob (Internal Threads)
Alignment Block
%6-18 x 1¼" Hex Low Head Bolt
Lower Guide Bracket
Guide Block
Bearing pin
608LL Bearing*
%_"Fiat Washer*
QTY.
1
1
3
I
2
2
1
1
2
13
2
10
1
2
3
1
t
1
1
1
1
t
6
1
1
1
1
1
1
1
t
1
1
1
1
1
t
* Standard hardware item available localty
17

Model 351.243971
Figure 9 - Replacement Parts Illustration for Table
9!!
<
11
6
17
28
18

KEY
NO. PART NO.
8326,00
366000
1822_00
STD852008
8327.00
6 832&00
7 1286,00
8 8329,00
9 0361.00
10 9574.00
11 s D85i008
12 3659°00
13 8330°00
14 STD835025
15 STD840812
16 8331 00
17 021&00
! 8 6396,00
!9 5351,00
20 0010.00
21 8251.00
22 8250_00
23 1370°00
24 STD551025
25 8255.00
26 8252,,00
27 STD541010
28 STD511007
29 8253,,00
30 8254.00
DESCRIPTION
Table
Front Trunnion
8-1.25 x 20mm Socket Head Bolt
8mm Lock Washer*
Back Trunnion
Trunnion Scale
Rivet
Trunnion Indicator
5-0.8 x 8ram Pan Head Screw
Trunnion Rod with Acorn Nut
8mm Flat Washer*
Knob (Internal Threads)
Knob (External Threads)
8-1.25 x 25mm Hex Head Bolt*
8-1.25 Hex Nut*
Table Stud
Table Insert
3 x 12ram Spring Pin
Rip Fence
Knob (External Threads)
Miter Gauge
Miter Gauge Bar
#10 Fiber Washer
',4"Flat Washer*
Threaded Pin
Knob (Internal T'hreads)
#10-24 Hex Nut*
#10o24 x 3A,,Pan Head Screw*
Indicator
Scale
31 STD551010
32 STD511002
33 5991.00
34 1883°00
35 1093.00
36 8256,00
37 8257,00
#10 Flat Washer*
#10-24 x ¼" Pan Head Screw*
#10-24 x W' Flat Head Screw
5-0,8 x 8mm Fiat Head Screw
Guide
Indexing Pin
Miter Gauge Assembly (Ref. Nos,.21 - 36)
* Standard hardware item available locally.
QTY.
1
1
4
4
I
1
2
1
1
1
3
1
I
1
1
1
1
1
I
1
1
1
1
3
I
1
3
3
1
1
t
t
2
1
1
1
1
'19

Model 351.243971
Figure 10 - Replacement Parts Illustration for Gear Box
1t
30
8
7
_2 21
28
20