Craftsman 31511870 User Manual CIRCULAR SAW Manuals And Guides L0408209

CRAFTSMAN Saw Circular Manual L0408209 CRAFTSMAN Saw Circular Owner's Manual, CRAFTSMAN Saw Circular installation guides

User Manual: Craftsman 31511870 31511870 CRAFTSMAN CIRCULAR SAW - Manuals and Guides View the owners manual for your CRAFTSMAN CIRCULAR SAW #31511870. Home:Tool Parts:Craftsman Parts:Craftsman CIRCULAR SAW Manual

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•owners manual

Sears

MOOEL

NO.

315.11870
CAUTION:
Read Rules for
Safe Operation
and Instructions
Carefully

•

Introduction

•

Operation

•

Repair

THIS

J_

Parts

SAFETY

SEAL

OF THE

POWER

TOOL

INSTITUTE

ASSURES

YOU:

1,
2.

the Seal, ere pro_foced in accordance
with applicable
Standards for Safety of Under.
writers" Laboratories
and AmHcan
Netionol Standards (ANSI),
That the nyanufm;h/rer's
power tools, 'lnch_d|ns the p_rticular
fool assodeled with
Thtt
_:_lIpillln©o
with ipplir, ibte ,foty
stindai_ki
Is ,Isii, i,i'id by Independint
In-

3.

speotlon and testing
That every nlotor_ed

4.
$.

cr,nducte4 by Underwriters j Laboratories
tool ki inipicted
under power.

Thit every tool his with
protection
of the usiir.
Thee the tool mnufi_urer

It adequate

spontir

Conimnar

COP_IGHT,

of the Institutes
1969.

BY

Is I

Instructions

member

_i

Sifaty

llon

I:_OW'_R TOOL

INST!'!_"!_,

the

(UL).

end 8 Use of surety
Power

Tool

rules

In/Htotu

for the

lind

Is a,

Progrim.
]]_C.

ALL

RIGHTS

RF_ERVED

GUARANTEE
CRAFTSMAN
PORTABLE ELECTRIC TOOLS ARE UNCONDITIONALLY
GUARANTEED
FOR
ONE YEAR TO GIVE COMPLETE SATISFACTION OR RETURN FOR FREE REPLACEMENT.
THIS GUARANTEE
SEARS STORE.

SERVICE IS AVAILABLE

BY SIMPLY

RETURNING

THE

TOOL TO ANY

SEARS, ROEBUCK AND CO. end SIMPSONS-SEARS LTD.

introduction
DOUBLE

SERVICING OF A TOOL WITH DOUBLE INSULATION REQUIRES EXTREME CARE AND KNOWLEDGE OF THE SYSTEM AND SHOULD BE PERFORMED ONLY BY A QUALIFIED SERVICE TECHNICIAN.
FOR SERVICE WE SUGGEST YOU RETURN THE TOOL TO YOUR NEAREST SEARS
STORE FOR REPAIR WHICH
WILL BE DONE
WITH
ORIGINAL
FACTORY
REPLACEMENT
PARTS.

INSULATION

Double insulation is a concept in safety, replacing the
standard grounded supply system, in electric power
tools. The construction of a double insulated tool offers protection equal to,a properly grounded
tool withour the necessity for us,ng a g ruunded conductor, The
double insulation
system ehmmntes
the need for the
usual three wire 9rounded
power cord and grounded
supply system.

Features include e rip guide for making fast,
smooth, consistent rip cuts without penciled lines;
push button arbor lock for fast, easy blade changeover; easy _ew saw blade port with directed air flow
for keeping line of cut clear; uses 7, 7-_, or 7-t/z
inch blades; kick-proof clutch which allows blade to
slip on spindle should binding or jamming occur
a|ong with exclusive riving knife assure maximum
user saf_ry.

Wherever there is electric current in the tool there
ore two complete sets of insulation to protect the user.
All exposed metal parts are isolated from the internal
metal motor components with prOtecting insulation.
The lead wires, switch, etc. with their functional in÷
sulution have the added protection of non-conductlve
sleeving or housings to complete the double insulation
system.

When

servicing

use

only

identi¢(=l

reploeemeot

I_sts,

RULES FOR SAFE OPERATION

I.
2.

3.
4.
S
6.
7.
8.
9.
10.
I I.
|2.
13.
14.
15.
16.
17,
18

KNOW
YOUR POWER TOOL -- Read owner's manual carefully.
Learn its applications and limitations as well as the speclf'ic pOtential hazards peculiar to this tool.
GROUND
ALL TOOLS -- UNLESS DOUBLE-INSULATED.
if tool'is
equipped with three-prong
plug, it should be plugged into a three-hole electrical
receptacle.
If adapter is used to accommodate two.prong receptacle, the adapter wire must be attached
to o known ground. " (Usually the
screw securing the receptacle cover plate.) Never remove third prong.
KEEP GUARDS IN PLACE and in working order.
KEEP WORK AREA CLEAN. Cluttered
areas and benches invite accidents.
AVOID
DANGEROUS
ENVIRONMENT.
Don't use pOwer tool in damp or wet locations.
And keep
work area well lit.
KEEP CHILDREN
AWAY.
All visitors should be kept safe distance from work area.
STORE IDLE TOOLS. When not in use, tools should be stored in dry, high or locked-up place--out of reach of children.
DON'T
FORCE TOOL. It will do the iob better and safer at the rate for which it wn¢ designed.
USE RIGHT
TOOL. Don't force small tool. or attachment
to do the job of o heavy duty! tool.
WEAR PROPER APPAREL. Noloose clothing
or jewelry to get caught
in moving
parts.
Rubber
gloves and footwear
Ore recommended
when working outdoors.
USE SAFETY GLASSES with most tools. Alto foc'e or dust mask if cuffing operation is dusty.
DON'T
ABUSE CORD. Never carry tool by cord or yank it to disconnect
from receptacle.
Keep
cord from heat. oil and sharp edges.
SECURE WORK.
Use clamps or a vise to hold work. it's safer than using your hand and it frees
both bonds to Ol_Zrate tool.
DON'T
OVERREACH.
Keep proper footing and balance at all times.
MAINTAIN
TOOLS WITH
CARE. Keep tools sharp at off times, ar_ clean for best and safest
performance.
Follow instructions
for lubricating
and changing
accessories.
DISCONNECT
TOOLS. When not in use, before servicing; when changing attochmenls,
blades,
bits, cutters, etc.
REMO_'E ADJUSTING
KEYS AND WRENCHES.
Form habit of _:hecking to see that keys and adjusting wrenches Ore removed from tool before turning it on.
AVOID
ACCIDENTAL
STARTING.
Don't carry plugged-in tool with finger on switch.
eOp,RIGk'r.

IH_).

B_lf

POWER

TOOL.

INSTITUTE,

INC,

ALL

RI_.NT_;

Po,ae 2

REgeRV[D

1.

2.
3.
4.
5.
678,
9.
10.
1 1.
12.

DO read thoroughly
INTRODUCTION
and OPERATING
INSTRUCTIONS
before
using
your
CIRCULAR
SAW.
DO be sure the voltage
of the
power supply
agrees with the data plate marking
on the unit.
DO use correct size extension cord as recommended_
DO be sure switch
is in "OFF"
position
before
connecting
tool to power supply,
DO be sure sow blade is properly mounted
with
teeth pointing upward at front of sow.
DO tighten
locking nuts oher
making
adjustments.
DO let saw blade come to full speed before beginning
cut.
DO releaseswitch
immediately
if blade binds or
jams in work.
DO disconnect power cord when cleaning
or do_
ing maintenance
on tool,
DO replace both brushes when either is worn to
about 1/_ inch in length.
DO keep blades sharp..
DO disconnect
•from power source and store in
a clean dry place.

1.

DON'T
use your CIRCULAR
SAW before reading thoroughly,
INTRODUCTION
and OPERATING INSTRUCTIONS.

2.

DON'T begin operation
unless lower blade guard
operates freely.
DON'T
use o dull blade or damaged
blade.

3.
4.
S,
6.
7.
8.
9.
10.
] ].
12.

DON'T
begin operation
until sow blade clamp
screw is securely
tightened.
DON'T
cut materials
that ore not suitably
supported.
DON'T
tie back lower blade guard•
DON'T
force tool, allow Circular
Saw to perform as Jt waS designed,
DON'T
leave Circular
Saw unattended
before
disconnecting
from power source.
DON'T allow the card near saw blade when operating,
DON'T allow children to operate Circulor
Sow,
DON't
DON'T
flying.
cool.

carry unit by power cord.
plug or cover air vents to keep dust from
Vents must be kept open to keep motor

CAUTION

The operation of any power tool con result in foreign object= being thrown into the eyes, which con
result
in severe eye damage.
Always
wear safety
glosses or eye shields before commencing
power
tool operation.
We recommend Wide Vision Safety
Mask for use over spectacles, or standard
safety
glasses . . . available
at Sears retail
or catalog
1totes.

KEEP HAND.S AWAY

FROM CUTTING

ARIL_

DO NOT REACH UNDERNEATH
WORK
PIECE FOR ANY REASON WHILE
SAW
BLADE IS ROTATING.
IF SAW SHOULD' BE USED IN OVERHEAD
OR VERTICAL POSITION, IT IS NORMAL
THAT BLADE GUARD NOT COMPLETELY
RETRACT,
THEREFORE ALWAYS
CHECK
GUARD BEFORE MAKING NEXT CUT.
AVOID
USE OF ALL SOLVENTS
WHEN
CLEANING
PLASTIC PARTS, USE CLEAN
CLOTHS AND WIPE PARTS AS MUCH AS
POSSIBLE TO REMOVE
DIRT,
CARBON
DUST, ETC. MOS_" PLASTICS
ARE SUSCEPTIBLE TO VARIOUS
TYPES OF COMMERCIAL
SOLVENTS
AND
MAY
BE DAMAGED
BY
THE USE OF THESE SOLVENTS.
THIS PRODUCT,
or any electrical
product,
requires extreme
care when service
repairs
ore
mode.
A dangerous electrical
hazard
con be
created by tempering
lr_th the electrical
or insulating systems or in the replacement
or subxtltut/on
of repQir par_. Repairs
should
be made
only by a qualified
technician.
If service is required we suggest you return the tool to your
nearest Sears store far approved
service
with
original

factory

r_plocement

I_rts.

WHEN
ELECTRIC
TOOLS ARE USED ON FIBERGLASS berets, sports cars, etc. it has been found
that they are subject to accelerated wear and possible premature
failure, as the fiberglass chips and
gi4ndings ore highly abrasive to bearings, brushes,
commutator,
etc. Consequently
it is not recommended that this tool be used tar continuous production work on any fiberglass
material.
During
any use on fiberglass
it is extremely important
that
the tool is €leaned frequently
by blowing wlth on
oir jet.
EXTENSION
CORDS-_The
use of any Extension
cord will cause some loss of power. To keep this to
a minimum
and to prevent overheating
and motor
burn-out, use the table below to determine the MINIMUM
wire size (A.W.G.)
Extension Cord.

• Extonxion Co_d Leqltl,
25- 50
50- 75
7S-100

Feet
Feet
Feet

Wire Size A.W.G.
14
12
10

Extension cords suitable far use with your Circular
SaW are available
at your neare_
Sear= Catalog
Order or Retail Store
Another
time saving convenience
is a €ord-lock
offered by Sears which prevents separation of cord.
Cord-lock is available
et your nearest Sears Retail
Store or Catalog Order House.

Page 3'

operating

\

Fig.

PREPARING

Fig. 2

Fig. 3

FOR OPERATION

When making accurate cuts take into consideration
not only the width of tee blade but also its kerf. Most
blades have teeth that ere set alternately to the right
and left. This means the kerr or cut made ,s wider
than the blade itself.

wrench to acti_ute kick-proof clutch. Operating with
blade Screw securely tightened is recommended only
for the users which prefer to operate without benefit
of kick-proof clutch.

If a board is marked to precise length from the right,
for example, the bose ..edge(guide) must ride the left
aide of the hue. Splitting the hne or guiding to its
right may cause the work piece to be shorter by the
width of the kerf.

The best of saw blades will not cut efficiently if they
are not kept ,clean and sharp. Using a dull blade
will do nothing more than place e heavy load on your
sew. Keep extra blades On band, so that sharp blades
are always available. Gum end wood pitch hardened
on blade will slow it down. Use hot water or kere_ne
to remove these accumulations. DO NOT USE GASOLINE,

Always be ©er_in guards ere working properly before
connecting un=t to power supply. "if guards do not work
freely, clean thoroughly of all sawdust, etc. Should
improper operating condition still exist the torsion
spring in |owes blade guard may need replacing. ISee
Torsion Spring Replacement instructions, page 6). The
design of your saw allows unit to be positioned on the
end of the motor housing, for one}' guard inspection,
blade change-over, and riving knife assembly,
BLADE CHANGE-OVER:
IMPORTANTmBE
SURE
POWER CORD IS DISCONNECTED
FROM POWER
SUPPLY. (See Fig. I) Position unit on end of motor
housing and depress lock pin fully.
Using wrench,
Key No. 46, (See I_rts list, page 9) turn blade Screwy,
Key No. $4, €lockw=se while depressing lock pm until
pin moves into lock position. While holdang leek pin,
turn blade screw counterclockwise to loosen. Release
lock and remove blade Screw, spring washer, Key No.
56, and blade washer, Key No. 5,5, from spindle shaft.
Wipe a drop of all onto flange bushing and blade
washer (D) where contact is made with saw blade.
Position saw blade (A) ins/de blade guard (C) with
teeth pointing upward at front of saw..Place the undercut side of blade washer (D) and spring washer (E)
over shaft, insert blade screw IF), engage lock pin
and tighten blade screw until spring washer is flattened. Loosen blade screw 1/6 turn or one hex with

TO ASSEMBLE RIVING KNIFE: IMPORTANT---BE
SURE POWER CORD IS DISCONNECTED
FROM
POWER SUPPLY. (See Fig. 2) The Riving Knife keeps
wood apart to guard against blade binding or jamruing. The effectiveness of the riving knife depends
upon the amount
of effort used in assembling and
arriving at a proper setting. The saw blade should be
in place before assembling riving knife as this is the
determining
factor
for proper setting.
Position
holes in knife (A) over ho|es in
upper blade
guurd (B) and insert screws (C) through holes in riving knife and into threaded boles in upper blade
guard. _urn
at least 1/16 inch clearance between
tip of blade tooth and inside edge uttip of knife and
t ghten screws securely.

TO OPERATE
To start a cut, rest front edge of besa on supported
portion of wnrk, line up guide (line where bose and
outlxmrd besa meet or edge of base when outboard
bose is removed) with line of cut, hold handles Firmly
end squeeze tagger switch. Allaw saw blade to reach
full speed, then guide sew into work with.steady, even
pressure. DO_NOT FORCE. When cut is Completed
release switchand allow blade to stop before lifting
sow From work.

Page 4

..IAFTSMAN

CIRCULAR

SAW--MODEL

NUMBER

315.11870

\

Fig. 5

Fig. 4

DEPTH OF CUT--freer
depth adjustment
should
permit only one tooth of the blade to proie_ below the
material to be cut. (For carbide tipped blades, only
of.a tooth.) Depth adjustment should allow only
the minimum blade exposure beyond maximum thickness of material to be cut, More depth will an/y increase friction and make for a rough cut. To adjust
depth of cut (See Fig. 3) loosen knob (A), grasp handle, bold rear of base against flat surface and raise
un_ until required depth is reached, Tighten knob h)
lock, A setting approximately Ya inch d_pper than
thickn_se of material to be cat is recommended for
best perfarn_nce. Depth setting should 'be at max/mum depth when performing blade installation or
change-over.

T° CROSS CUT AND RiP CUT--The
guide (llne
where bose and outboard base meet or edge of base
when outboard bcue is removed) is in line with sew
blade when .b_.velsetting is at 0 °. Inner face of notch
in base is guide when bevel setting is at 45 ° . At inter_
mediate settings blade will cut slightly to the left of
the guide edge. To compensate offeatyonr guide line
to the right on the board to be cut.

The rip guide provided with your sew will assist you
in making rip cuts of up to 5_ inches. (See Pig. 4)
Outboard bose must be removed I_fose assembling rip
gmae. I/VtPORTANT_EE
SURE POWER CORD ISDISCONNECTED
FROM POWER SUPPLY.
Lo_en

Page5

Fig, 6

knurled head screw IB) by turning conntemlockwise
and remove outboard base. Insert rip guide (A) under
clamp bracket (C) and adjust to desired setting with
graduated surface up. Tighten knurled head screw
in clamp bracket securely. Outboard base may also
be removed for closer cutting parallel to walls etc.
Closest cutting will be accomplished with bevel set_ng at 0 °.
H01d• guide

face

firmly

to obtain a true cut
Guiding edge of work
results when using rip
• • blade from binding in

against

right

edge

of wnrk

without
cramping the blade.
must he streight
for desirable
guide. Us_ caution to prevent
the kerf at end of a cut.

TO BEVEL CUT,-**-_..True
angle of cat may be adjusted
to anydesired setting between 0 ° and 45 °. (See Fig. 5)
IMPORTAHT_EE
SURE POWER CORD IS DISCONNEC'TED FROM POWER SUPPLY. Loosen knobs and
adjust base so that index mark (B) is at O°, Tighten
knob (A) (See Fig. S). Set desired depth of cut and
tighten knob U_) (See Fig. 3), Set index mark (B) in
line with _requirod angle setting on bevel scale and
tighten knob (A) (See Fig. 5), After setting at required angle make a tria.I cut in scrap material along a
guide line to determine how much if any guide line
must be offset to produce desirable cut.
TO POCKET CUT---(See
Fig. 6) With
0 swing k_war blade guard up and
of base fiat on work-piece. Sta_ unit
blade into work moving unit steadily
rh, ing knife to move into kerr until
york. After
cut is complete,
release
blade to come to a complete
step
from work. CoreenD my
be cleaned
sew or sebre sew.

bevel setting at
hold, rest frQnt
end slowly lower
forward to allmr
base is fiat on
switch and allow
bob)re removing
out with e hand

TORSION

SPRING

REPLACEMENT

WEAR SAFETY GLASSES OR EYE SHIELD
REPLACING TORSION SPRING.

WHEN

IMPORTANT--BE
SURE POWER CORD IS DISCONNECTED FROM POWER SUPPLY, In pml_rlng to replace torsion spring e 3/32"
pin at least one inch
long will be required. In the event such a Pin is not
available o 4 or 5 penny finishing nail cut off below
the head and scores will suffice.
Fig. 7

£
Remove decal 17-_ inch) to expose shoulder screw.
Remove shoulder screw (A), holding lower blade guard
(B) onto upper blade guard, by turning eon"terclo.¢,kwise. Remove lower blade guard while exercising
caution to retain sprin 9 washer in place on shoulder
on upper blade guard.

Fig. 8

O

Page 6

(See Fig.7) Position lower blade guard onto flat curface inside up with shoulder screw through hole in
blade guard. Insert prong (X) of torsion spring !C)
into, dot in spnng spacer (D) with prong (Y)" resting
against sh0ulder on reverse side of spacer, Insert
_'prlng. and spacer into Ic_wer blade guard with prong
(,!") placed into slot in blade guard, (See Fig. 8) Pos:treu !_ inch hole in wrench (E) over threaded partion of shoulder s_rew, insert pin or noil (F) through
smell hole in wrench and engage pin behind prong
IX) of torsion spring. Maintaining downward pressure
on wrench to hold spring m place turn wrench clockwise approximately 270 ° or ,a_ turn where pin will
line up with through hole (G! :n. lower b.lnde guard.
To locate pin and hole top pin hghtly with hammer
or n_. lint while turning wrench slowly m area of hole
location With pin seated :n hole in lower blade guard
position over open area and continue tapping until
on|y appreximatnly i/16"
of pm is exposed above
wrench.Shoulder screw and wrench may now be removed. (See Fig. 9) Position lower blade g,ua.rd onto upper
blade guard with pre._g (X) positioned ,.to clot in upper blade guard, ,nsert shoulder screw and tighten
securely before removing pin wjtl: a Pair of phers.
_iqtain
clear area for la.wer blade guard when re_;ing pm as sudden spnng engagement will cause
immediate retraction of lower blade guard.

BRUSH REPLACEMENT
Periodically check brushes for wear and repluce both
brushes when either is worn to about v/_ inch in length.
To check length of brushes they must be removed
from the unit (see instructions below). Replacemei:t of
these relatively inexpensive ports, when necessary,
will keep your Circular Sow operating more efficiently
and prolong the life of the motor.
Replacement of worn-out brushes is considered norreal operating mc_ntenanee and is not therefore €o_emd by gwrentee.
IMPORTANT--BE

SURE POWER CORD IS DISCON-

NECTED FROM POWER SUPPLY. Ta replace carbon
brushes (See Fig. 101, Key No. 71, (See pan list, poge
9) unscrew brush cops, Key No. 70, and remove old
brush. Reassemble new brush assembly making
sure
curvature of brush matches curvature
of the surface
of the motor to which it is mated and that the brushes
move freely inside brush holder. Be sure brush caps
ore securely tightened.

LUBRICATION
All the bearings in this teal ore lubricated
with n sufficient amount of high grade lubricant
for the llfe of
the unitunder
normal operating conditions, therefore,
no further
lubrication
is required.

Fig. 10

ACCESSORIES

ADD

GREATER

VERSATILITY

CORD LOCK
SAW BLADES

.L

,4*U--,

3HyCru/ts m 814opstcd c:essorics
SAW GUIDE

G CASE

WHEN

USING

ATTACHMENTS

MANUFACTURERS

ALWAYS

WEAR SAFETY GLASSES AND

RECOMMENDATIONS

AS

TO

THEIR

FOLLOW

USE

ADDITIONAL
ACCESSORIES AVAILABLE
-- VISIT YOUR NEAREST SEARS RETAIL
STORE OR CATALOG OFFICE FOR A COMPLETE SELECTION
Pdge 7



---

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