Sears IO3.243OO User manual

' a44,rp g-,"1r.1
132-rtDz. * -zee y - ( .Z iu,,ry ocr I 2/g
OPERATING INSTRUCTIONS
AND PARTS IJIST FOR
BAND SAW
12 INCH
Instructions for Ordering P
All parts listed herein rnust be ordered through a Searg
retail store or rnail order house. Parts are shipped pre-
paid. When ordering repair parts, always give the follow-
ing inforrnation:
l. The Part Nurnber,
2. The Part Narne and Price.
3. The Model Nurnber 103.24300.
This list is valuable. It will assure your being able to
obtain proper parts service. We suggest you keep it with
other valuable papers.
SEARS, ROEBUCK and CO.
LITHOGRAPHED IN U. S.A.
Model Number IO3.243OO
This is the rnodel nurnber of your Band Saw. It will be
found on a plate on the back cover. Always rnention this
rnodel nurnber when comrnunicating with us regarding
your Band Saw or when ordering parts.
Source Forrn 3@19

OPERATING
INSTRUCTIONS
AND PAR,TS
LISTFOR.
BAND SAW
tnoDEt NUMBERI03.24300
COVERRETAININGNUTS
BTADEGUIDE
SAW GUARD
TABTETIIT IOCK HAN
TABLETIIT POINTER
FIGURE I
TNSTATLATION:
The Band Saw should be bolted securelyto a solidly
built work bench. It is suggested that the saw be
installed so that the table is 38 to 42 inchesfrom the
floor to suit the operator.
Four 9
/32 inch holes have been provided in the
band saw feet for bolting to the bench.
The motor, as recommended in a later paragraph,
may be installed behind or below the tool. The drive
pulley is designed for use with a standard Yz inch
V belt. The length of this belt may be determined
after the motor position hasbeen selected by measur-
ing with a piece of string or flexible tape around the
outside diameter of the pulleys, not in the grooves.
A hole approximately 3t/2 inchessguare should be
cut in the work bench directly ahead of the front feet
::#::.nt the accumulation of sawdust inside the
lUBRICATION:
The special double row ball bearing built into the
drive shaft hasbeen packed with lubricant and sealed
at the factory. It should require no further attention.
Note: If replacement of this bearing is necessary
in the future, full instructions covering the removal of
the old bearing and the installation of the new one
will be supplied with the replacement part.
Apply a few drops of oil (SAE #30) to the idler
wheel needle bearings. This may be accomplished
after removing the rubber oil hole plugs in the hub
of the idler wheels. Replace the plugs after oiling.
The blade thrust rollers, #18232, should be lubri-
cated occasionally. Other moving and sliding parts
such as the guide slide and table trunnions rnay
require occasional lubrication to maintain their
smooth operation.
SPEED
AND POWER:
For general use with wood and similar material,
proper operating speed and power may be attained
by using a |/3 horsepower 1750 R.P.M. motor
equipped with a 3 inch diameter pulley.
When purchasing the 3" motor pulley mentioned

-
above be sure to specify the shaft diameter of your
motor. Install the motor sothat the direction of rota-
tion of the Drive pulley is counter-clockwise when
viewed from the pulley side of the tool.
CONTROtS:
The table may be tilted from a level position to 45
degrees forward, after loosening the table tilt lock
with the handle provided.
The degree of tilt is shown on the calibrated trun-
nion scaleby . pointer asshown in figure l.
The upper g,rid. arrembly may be raised and
lowered to accommodate material of various thick-
ness after loosening the blade guide elevation lock
knob shown in 6gure l.
The blade thrust roller arsemblies and the lateral
guides in both the upper and lower blade euide
assemblies
may be reset after the set screw holding
each unit has been backed out several turns.
ADJUSTftTENTS:
This band saw was completely checked and tested
under power at the factory. Rough handling in ship-
ment may have caused some misalignment during
transit. Following are several points which might be
checked to insure proper operation.
The table should be square with the blade when the
pointer indicates zero on the trunnion scale. If this is
not the casethe tool will not produce accurate cuts
when set aeeording to thi,srcalc.-€orectionsmay be
made by resettingthe table squarewith the blade (use
an accuratesquare) and then readjusting the pointer
to the zero mark on the scale by loosening the screw
which holds the pointer to the tool.
cover near the blade tension adiusting knob. The
cover may be removed for checking tension or t€'
placing blades after removing the three knobs directly
opposite the cover retaining nuts shown in 6gure l.
Tension adjustments for the variouswidth blades may
be made according to figure 2.
To remoye or replace a blade, remove the front
cover and the set screw in the table slot. Release the
tension until the blade may be slipped off easily. In-
stall the new blade with the teeth pointing down and
away from the drive pulley and apply the correct
tension. Turn the pulley forward by hand for at least
a dozen revolutions or more. Watch caret,,.'^ry
to see
that the blade tracks in the same spot consistently.
If the blade tends to ride off the wheel, two adjust-
ments are provided to return the blade to its proper
track at the center of the drive wheel.
For minor adjustment of blade tracking difficulties,
the blade alignment adjusting knob shown in figure
I may be turned slightly in or out causing the rear
idler wheel to pivot and retrack the blade. If this ad-
justment is not sufficient the shaft on which the up.per
idler wheel is mounted may be moved toward ot
away from the frame. It is held in place by the
square head screw in the casting over the shaft. Be
certain that this screw is securely tightened after any
adjustment of the upper idler wheel.
Check the blade for correct tension before re-in-
stalling the cover. Replace the set screw in the table
slot.
Blade guide assemblies are provided both above
and below the. table to support the blade against
lateral and direct thrust. The roller type guides be-
hind the blade should be set approximately | /64 inch
from the blade edge. The blade should touch these
rollers only when cutting, and not when the saw is
running free. The lateral guides should be set as
close as possible to the blade without touching. When
viewed from the side they should be in such a position
that if the blade is pushed against them, the flat sur'
face, and not the teeth will ride the guides. These
Iateral guides should be checked often and refaced
and reset when necessary, to keep them close to the
blade.
When the saw is turned by hand, or when running
free under power, the blade should track smoothly on
all three wheels, and should touch none of the guides,
upper or lower.
The complete lower guide assembly is held in place
by " set screw through the frame casting and may be
adjusted as a unit after loosening this set scre!r'.
After making any adjustment on the Band Saw,
check carefully by turning the mechanism by hand
several times before applying power.
BIADE:
Following are several common causes of band saw
blade breakage. Avoid these situations by frequently
ADVANCE
WASHER
TOTHISPOSITION
TO
APPTYTHE
NECESSARY
TENSIONFOR 3/I
INCHWIDE
BIADES.
WITH
WASHER
AT THIS
POSIIIONPROPER
TENSION
HAS BEEN
APPTIED
FORBOTH
3/r6
AND r/r INCHBLADES.
FIGURE 2
A stop screw with lock nut may be found projecting
from the lower table surface over the frame casting.
This screw when properly set will allow accurate
return of the table to a true le.rcl position after it has
been tilted for an angular cut.
The proper tension for the 3/ | 6, | /4, or 378 inch
wide blades recommended is shown on the blade
tension indicator. This indicator is just inside the

checking adjustmentsand by exercising
carein opera'
tion, and you will be rewarded by increasedlife and
service from your blade.
Excessive tension greatly shortens the life of the
blade.
Failure to bring the upper guide assembly down
closeto the work allows distortion of the blade which
encourages
breakage.
Excessive feed pressure causesthe blade to ride
hard on the thrust roller, the friction hardens the
blade edge which causes
cracking and breakage. A
dull blade, or one that has been improperly set or
sharpened will require much greater feed pressures
than a good, sharp,properly setblade. To keep the
blade in good cutting condition it should be sharp-
ened after every 4 to 6 hours of actual cutting.
If the guidesare set too closeto the blade, rubbing
constantlJy',
or causingblade defection, the blade life
and service are definitely shortened.
Both the guides and the blade will be damaged if
the guides touch the teeth rather than the smooth
sides
of the blade when lateral thrust may be applied
during the cutting of irregular shapes.
A poor weld where the blade endsare joined, or a
weld that is improperly dressed down, leaving a
bump, is often a cause
of short blade life.
If the blade is allowed to rust, either on the tool or
in storage, pitting caused by rust may be severe
enoughto cause
breakage. Oil all blades before stor-.
ing-tlnipe oil off before installing on Band Saw.
Finally one of the most common causes
of blade
difficulty is the practice of cutting too sharp a radius
or of turning the work piece too fast when cutting a
radius thus binding or twisting the blade. Following
is a table showing the minimum radius which should
be cut with various width blades.
Blade Width
Inches
3/t6
t/4
3/8
Minimum Radius
Inches
t/2
I
3
FIGURE '
It is generally considered a good policy to work at
least /a inch over the specified minimum radius.
When storing blades, they may be folded simply
and conveniently in the following manner:
Hold the blade in front of you, teeth pointing away,
so that you can look through the circle formed by the
blade. Grasp the blade with the left hand so that the
thumb is on the smooth edge of the blade toward
your body and the fingers are on the blade teeth.
Place the right hand at a spot directly acrossthe circle
so that the thumb is away from the body on the saw
teeth while the fingersare on the smooth edgetoward
the body. The hands should now be on opposite sides
of the circle and in exactly opposite positions-1hs
palm of the left hand and the back of the right hand
toward your body. Without letting go of the blade,
twist each wrist until the palm of the right hand and
the back of the left hand is toward the body. As the
hands are moved slowly to within 6 to 8 inches of
each other during thiStwisting motion, the blade will
fall into a folded pattern of 3 small circles as shown
in the parts illustration. ,A small loop of string or 6ne
wire applied at two opposite points on the small
circles will hold the blade in this shape till released
for reinstallation on the saw.
OPERATION:
Hold the work piece 6rmly against the table surface
during cutting operations. If the piece is allowed to
tilt or otherwise raisefrom the table, the angle of the
cut will not be square.
To simplify the cutting of complex 6gures, it is
advisable to rough out the generalshapebefore finish-
ing the cut on the planned line, If possible,
when you
come to a sharp curve, cut it with a seriesof tangent
cuts rather than in one operation. It is often more
practical to turn and cut out through waste stock
rather than to pull a partially completed cut back off
the blade, thus running a risk of catching the blade
and pulling it off the wheel.
If you keep your mind slightly ahead of the blade,
thusanticipating curvesand changes
in position of the
work piece, you will find it much easierto follow the
planned line. Sharp turns often may be cut much
more e'asilyafter drilling out the area near the turn
before starting the sawing operation. Corners are cut
guite easily by first cutting around the corner in a
comfortable radius and then returning to saw the
corner from eachside.
Narrow slots can be worlced out by making repeat
cuts to the end of the slots.
Do not force the work against the blade in excess
to the cutting capacity of the blade asthis will make
the following of a pattern extremely difiicult.
A few practice cuts should enable one to get the
feel of band sawing.

36711
36713
36u3
r8o21
@- 3&r2
36728
x5r6
18517
18629
x&2
36718

Part No. PART NAME
Framc Arrcmbly with Drlvc Shaft and Bcarlng, Shroud
Studr, and Trunnlon Guldc Plnr.. ...,,/.......f20.00
Blade Thmrt Bcarint Arcrnbly. .60
Pivot Shaft . .. . .E0
Pivot Adjueting Knob .45
fdlcr Vhecl with Bcarin3r, Tirc and Oil Plug.. t.75
Front Covcr .... .. 10.00
Back Covcr .... 10.00
Bearlng-Drivc Shaft wtth Snap Ring and Woodnrfr Kcy 1.75
Pullcy with rct rcrwt-l lnch rlngle groovc V-pullcy
16 tnch borc. Purcharc from your norrclt Scarr rctrll
ltorc or mail ordcr hourc. Ark for C-atalo3 No. 9-2E0{
16 lnch borc.
l$2t2 Bladc Thrurt Rollcr .t5
lE{49 Guldc Tenrion Sprin3 .lt
16117 Tablc Ttlt Lock Nut .2t
16526 Her Nut .10
-#lE6l9 Knob .1t
1E629 Tablc Loch Handle .50
,6211 Tablc . 10.00
--t6all Bladc Teneion Adjurting Knob . .60
,6112 Table lnecrt . ... .20
t64lt Drivc Vhecl .... 2.00
36411 Lowcr Guidc Brackct .E5
t611, Uppcr Guidc Brackct 1.20
?6a17 Slidc . 1.00
t6612 Pin .. .l5
,661t ldlcr Spindlc .60
,6616 Covcr Spaccr Stud . .r0
t6621 Saw Guidc stud . .25
t67 l l Rctaining Ring .15
t67 12 Upper Guide Brackct Loclc Spaccr .... .15
,67 1, ldler Vheel lVarher .15
,67 |I Slide Guide .t0
t67 lE Tablc Trrnnion with Scalc . 1.60
t67 19 Tablc Trunnion Plain 1.50
Part No. PART NAME
Prepald
Sclltng
Prlcc
Each
t6721 Saw Guard .t 1.00
16722 Tcnaion lndicator .2t
t672, Spaccr .lt
t6721 Tablc Tilt Lock Clamp .... .20
t672E Polntcr .15
36729 Band Saw Blade--Purcharc from nGarcrt Scarr rctall
rtorc or mall ordcr houec. Ure only C-atalog No. 9-266{
ar thir ir the only blado which wtll givc ratirfectory
!GrvlCG.
,6711 Rer Lcg
t67tL Front Lcg
16E12 Saw Guidc
36E13 Oil Holc Plug .
36E15 Whecl Tire .
Prcpatd
Sellins
Prlcc
Erch
PARTSIIST
,6E16
.xl02
xr0a
xt09
xr32
xt33
xtt9
,6r06
361l0
,6tto
36t50
,6170
36tE0
36t90
,6220
10027 .1t
.1'
.15
.t5
.rl0
Bladc Tcneion Spring .2O
Set Scrcw %-2O r |l Sguarc l{cad Cup Point...... .10
Sct Screw yr-20 r % Slottcd Head Cup Point...... .10
Set Screw No. 10-20 r % Slottcd Hcad Cup Point.. .10
Set Scrcw 5/16-lC r l( Slottcd Hod Cup Polnt..... .10
Sct Scrcw 5l 16-16 r |{ Squarc Hcad Cup Point. . . . . .10
Sct Scrcw r/16-l} I ll, Slottcd Hcad Cup Point..... .10
rPettr nrrlod ln thtr nrnirr nry bo purchr.od locelly.
Thit rheet b intendcd for inetmction and rcpair part. gnly and ir not a packing rlip. Thc parta rhown and lirtcd rnay ln.
clude acceerorier not ncccr.arily part of thir tool. All paft. arp rhippcd prepaid. All pricer arc rubjcct to change without noticc.
i
Xf 5, Sct Screw 5/16-lE r % Slottcd Hcad Cup Point. .... .10
.Xrlt Machinc Bolt %-20 r { Squarc Hcd . .10
)(4l7 Hcr Nut 5/16-lE Scmi-Finirhcd . .10
X490 Her Lock Nut %-2E .lt
.X5 16 Machinc Scrcw No. C-12 r % Round Hcad. .10
.Xt39 Machlnc Scrcw No. l0-2f r Yr Round Head . .10
.X605 LocL Waehcr % .10
X602 Plain Vaahet 17/61 l.D. r 96 O.D. . .10
.X6f I Lock Warhct 5/16 tnch .10
)(7t0 Machinc Scrcw t/16-lE r g[ Hcr Hcad. .10
XTtl Machlnc Scrcw *-2A r 1l Fillirtcr Hcad. .10
.X1006 C-arrlage Bolt |(-20 r 3 Round Hod . .10
.X1026 Carrlasc Bolt 5/ l6-tE r l1l Round Hcad. .10
X1257 Acorn Nut 16-20 .lt
X1602 Voodruff Kcy-Arncrlcrn Standard No. 40{ .10
6
8-50-t0300