Craftsman 315.11721 Owner's Manual

OWNERS

_NUAL

MODEL NO.

315,11721

CAUTION:

Read Rules for

Safe Operation

and Instructions

Carefully

SAVE THIS

MANUAL FOR

FUTURE REFERENCE

!i i!< ¸i ! iii

CRRFTS!dRN°

DOUBLE INSULATED

lntrodur.tion

Operation

Maintenance

Repair Parts

Designed exclusively for and sold onty by

SEARSi ROEBUCK AND CO., Dept, 6gsi731A, Sears 'Tower, Chigago, IL 60684

FULL ONE YEAR WARRANTY ON CRAFTSMAN BELT SANDER
If this Craftsman Belt Sander fails to give complete satisfaction within one year'from th_e of purchase

RETURN IT TO THE NEAREST SEARS STORE THROUGHOUT THE UNITED STATES and Sears will repair
it, free of charge,

If this belt sander is used for commercial or rental purposes this warranty applies for only 90 days from

the date of purchase,
This warranty gives you specific legal rights, and you may also have other rights which vary from state to

state.

SEARS, ROEBUCK AND CO,
DEPT. 698/731A
SEARS TOWER

CHICAGO, IL 60684

INTRODUCTION

Your Craftsman 3-Inch Belt Sander is suitable for
coarse, medium and fine sanding of wood, metals,

plastics and other materials.-It is ideal when used for
smoothing rough boards, chamfering, rounding
edges and many other general sanding applications.

It is ideal for refinishing large pieces of furniture,
stairs and other large surfaces, its balanced design

makes it easy to use.

DOUBLE INSULATION

Double insulation [s a concept in safety, in electric

power tools, which eliminates the need for the usual
three wire grounded power cord and grounded supp-

ly system. Wherever there is electric current in the

tool there are two complete sets of insulation to pro-
tect the user. AI exposed metal parts are isolated

from the internat metal motor components with pro-
tecting insulation.

RULES FOR SAFE OPERATION

WARNING -- DO NOT ATTEMPT TO OPERATE UNTIL YOU HAVE READ THOROUGHLY AND UNDERSTAND
COMPLETELY ALL INSTRUCTIONS, RULES, ETC. CONTAINED IN THiS MANUAL. FAILURE TO COMPLY CAN

RESULT IN ACCIDENTSoINVOLVING FIRE, ELECTRIC SHOCK, OR SERIOUS PERSONAL INJURY. SAVE

OWNEJ_SMANUAI_-AND RE_IF.W_FREQpENTLY FOR CONTINUING SAFE OPERATION, AND INSTRUCTING

iPOSSIBLE THIRD,PAR'_ USJEB._ ' "

IMPORTANT -- Servicing of a tool with double in-
sulation requires extreme care and knowledge of the

system and should be performed only by a qualified
service technician. For service, return the tool to

your nearest Sears store for repair which will be
done with original factory replacement parts.

-SWITCH
A trigger switch controls operation of the Sander.

The trigger switch can be locked on for continuous
operation. To lock, putt trigger, press lock button in-
ward, and release trigger. Pull triggei" and release to

stop.
DANGER: Keep hands and fingers away from moving

sanding belt. Any part of body coming in contact

with moving belt could cause serious injury.

DANGER: Do not wear loose clothing or jewelry

when operating Sander. They could get caught in
moving parts causing injury. Keep head away from

Sander and sanding area. Hair could get caught in
moving parts and foreign objects could get thrown

away from Sander causing injury. Never use in an ex-
plosive atmosphere. Normal sparking of motor could
ignite fumes.

READ

ALl, INSTRUCTIONS

1

KNQ_YOU_ POWER TOOL -- Read owner s manual carefully. Learn its ap-

_f_ti,c:;a_6r_s_'an'd;lir_'i_tations.as_well as the specific potential haz,_rds peculiar to

thins tool,

2, _U_I_AGA_]Nj_T:_ISk_P.utRiCAL SHOCK BY PREVENTING BODY CONTACT

I/y_,,H G[ROUNDED'SURFACES, For example: Pipes, radiators, ranges, refrig-
ei'_to r enclosures,

3. KEEP GUARDS IN PLACE and in working order.

4. KEEP WORK AREA CLEAN. Cluttered areas and benches invite accidents.
5, AVOID DANGEROUS ENVIRONMENT. Don't use power tool in damp or wet

locations or expose to rain. Keep work area well lit.

6. KEEP CHILDREN AWAY. All visitors should be kept safe distance from work
area. Do not let visitors contact tool or extension cord.

7. STORE IDLE TOOLS, When not in use, tools should be stored in dry', high or

locked-up place -- out of reach of children. "

Page 2

RULES FOR SAFE OPERATION(Continued)

8. DON'T FORCE TOOL. It will do the job better and safer at the rate for which it
was designed.

9. USE RIGHT TOOL. Don't force small too! or attachment to do the job of a heavy
duty tool. Don't use tool for purpose not intended - for example - Don't use

a circular saw for cutting tree limbs or logs.

10. WEAR PROPER APPAREL. No loose clothing or jewelry to get caught in moving
parts. Rubber gloves and footwear are recommended when working outdoors.
Also, wear protective hair covering to contain long hair.

11. USE SAFETY GLASSES with all tools. Also face or dust mask if cutting
operation is dusty.

12. DON'T ABUSE CORD. Never carry toot by cord or yank it to disconnect from
receptacle. Keep cord from heat, oit and sharp edges.

!3. SECURE WORK. Use clamps or a vise to hold work. It's safer than using your

hand and it frees both hands to operate tool.

14. DON'T OVERREACH. Keep proper footing and balance at all times.

15. MAINTAIN TOOLS WITH CARE. Keep tools sharp at all times, and clean for best
and safest performance. Follow instructions for lubricating and changing ac-

cessories.

16. DISCONNECT TOOLS. When not in use, before servicing, or when changing

attachments, blades, bits, cutters, etc. all tools should be disconnected.

17, REMOVE ADJUSTING KEYS AND WRENCHES, Form habit of checking to see

that keys and adjusting wrenches are removed from tool before turning it on.

18. AVOID ACCIDENTAL STARTING. Don't carry plugged-in tools with finger on

switch. Be sure switch is off when plugging in.

19. OUTDOOR USE EXTENSION CORDS. When tool is used outdoors, use only

extension cords suitable for use outdoors. Outdoor approved cords are marked
with the suffix W-A, for example m SJTW-A or SJOW-A.

20. NEVER USE THIS OR ANY POWER SANDER FOR WET SANDING. Failure to

comply can result in electrical shock causing serious injury or worse.

21. KEEP HANDS AWAY FROM SANDING AREA.

22. NEVER USE IN AN EXPLOSIVE ATMOSPHERE. Normal sparking of the motor

could ignite fumes,

23. INSPECT TOOL CORDS PERIODICALLY and if damaged, have repaired at your

nearest Sears Repair Center.

24. INSPECT EXTENSION CORDS PERIODICALLY and replace if damaged.

25. KEEP HANDLES DRY, CLEAN, AND FREE FROM OIL AND GREASE. Always

use a clean cloth when cleaning. Never use brake fluid, gasoline, or any strong

solvents to clean your tool.

26. STAY ALERT. Watch what you are doing and use common sense. Do not op-

erate tool when you are tired.

27. CHECK 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 mov-

ing 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 by an authorized service center unless
indicated elsewhere in this instruction manual.

28. DO NOT USE TOOL IF SWITCH DOES NOT TURN IT ON AND OFF. Have defect-
ive switches replaced by authorized service center.

29, Inspect for and remove all nails from lumber before sanding.

30. DRUGS, ALCOHOL, MEDICATION. Do not operate tool while under the infl-
uence of drugs, alcohol, or any medication.

31. SAVE THESE INSTRUCTIONS.

Page 3

TRACKING

OPERATION

PREPARING FOR OPERATION

For ease of operation your Sander has a front handle and a rear
handle. These handles allow two-hand operation which aids in

maintaining control and keeping sanding area level with

workpiece. When operating your Sander hold the front handle
with your left hand and the rear handle with your right hand as

shown in Fig. 1.
Selecting the correct size and type sanding belt is an extreme-

ly important step in achieving a high quality sanded finish.
Aluminum oxide, silicone carbide, and other synthetic

abrasives are best for power sanding.
In general, coarse grit wilt remove the most material and finer

grit will produce best finish in all sanding operations. The con-
dition of the surface to be sanded witt determine which grit

belt will do the job. If the surface is rough, start with a coarse
grit belt sanding until surface is uniform. Medium grit belt may

then be used to remove scratches teft by the coarser belt and

finer grit belt used for finishing of the surface. Always con-

Fig. I'"

Fig, 2

Fig, 3

tinue sanding with each grit belt until surface is uniform.

INSTALLING AND ADJUSTING SANDING BELT
Disconnect sander from power supply.

See Figure 2. Release tension on belt by ;_ushing the front

pulley squarely against the top or edge of workbench. When

the pulley is pushed back it will lock in that position allowing
slack in the belt so it can be removed. Install new belt making

sure arrow on inside of belt is pointing in the direction of rota-
tion which is clockwise when looking into open side of sander.

To put tension on the belt, insert a screwdriver between the

idler pulley support bracket and the idler pulley support as il-

lustrated and pry toward front of sander.
To adjust sanding belt, connect sander to power supply. Place
sander in an upside down position as illustrated (See Fig. 3),

pull switch trigger and release immediately while observing
tracking of sanding belt. If sanding belt runs outward turn
tracking screw clockwise and counterclockwise if belt runs in-

ward. This should be done until you are sure belt will not come

in contact with striker bar. When you are sure belt wilt not rub
against striker bar start sander and fine adjust the tracking

screw until belt stabilizes. When correctly adjusted, the outer
edge of the belt will be even with the outer edge of sanding

shoe pad (Key 28, page 11). Belt life will be increased ap-

preciably if a few seconds are spent adjusting the belt track-

ing.

NOTE: Idler pulley rubbing housing when in the released posi-
tion without sandpaper is not harmful to the operation of the

tool. The sanding belt, when assembled, wit not allow pulley
to project as far.

TO OPERATE
Clamp or otherwise secure the work to prevent it moving under

the Sander. DANGER: Unsecured work could be thrown back
toward operator causing injury. With Sander off work, press

the trigger switch and when the motor reaches its maximum
speed, lower the Sander on the work with a slight forward mo-

tion. Using the rear handle to control the Sander and the front
handle only to guide it, move it slowly over the work. Allowing

the Sander to remain in one place will result in an uneven sur-
face. The Sander was designed to provide the proper weight on

the sand belt and extra pressure will only result in uneven
work, slow cutting from slow belt speed, clogged belts and

possible motor bum-out.
Use the proper belt when heavy cutting is desired, not heavy

pressure. The importance of this cannot be over-emphasized,
the weight has been built into the tool to give the most effi-

cient pressure at the proper location.

Page 4