Craftsman 351.233731 Operating instructions

SAVE THiS MANUAL
FOR
FUTURE
REFERENCE
MODEL NO.
351.23373!
12 1/2" PLANER
CAUTION:
READ ALL
INSTRUCTIONS
CAREFU LLY!
_art No. 4290.01
Sold by SEARS:
o safety instructions
o operating instructions
o replacement parts
ROEBUCK
AND CO.: Chicago:
RL60684
U.S.A. ©
October
1991
FULL ONE YEAR WARRANTY ON SEARS/CRAFTSMAN
12 1/2" Thickness Planer
if within one full yeer from the date of purchase, this Sears Craftsmen 12 1/2" Thickness
Planer fails due to a defect in material or workmanship, Sears will repair it, free of charge.
WARRANTY SERVICE IS AVAILABLE BY SIMPLY CONTACTING THE NEAREST SEARS STORE
OR SERVICE CENTER THROUGHOUT THE UNITED STATES.
This warranty gives you specific lega_ rights, and you may have other rights which vary
from state to state.
SEARS, ROEBUCK AND CO., DEPT.698/731A SEARS TOWER, CHICAGO, IL 60684
GENERAL
SAFETY
INSTRUCTIONS
BEFORE ANY WORK IS DONE, READ THE CAU=
TIONS LISTED BELOW CAREFULLY. WORKING
SAFELY PREVENTS ACCIDENTS.
OPERATOR SHOULD BE PREPARED FOR THE JOB
a. Wear proper apparel Do not wear loose clothing,
gloves, neckties, rings, bracelets or other jewelry
which may get caught in moving parts of the
machine.
b.
c.
d.
Wear protective hair coveringto contain long hair.
Wear safety shoeswith non-slip soles.
Wear safety glasses. Everyday glasses have
only impact resistant lenses. They are not safety
glasses.
e.
Wear face mask or dust mask if cutting operation
is dusty.
f.
Be alert and think dearly. Never operate power
tools when tired, intoxicated or when taking
medications that cause drowsiness.
WORK AREA SHOULD BE READY FOR THE JOB:
a.
Keep work area dean. Cluttered work areas and
workbenches invite accidents.
b.
c.
d.
e.
f.
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.
Work area should be properly Hghted.
The proper electrical outlet should be available
for the tool, A three-prong plug should be plugged
directly into a properly grounded three-prong
receptacle.
Extension cords shouBd have a ground prong and
the three wires of the extension cord should be the
correct gauge.
Keep visitors a safe distance from work area.
Keep chiHdren out of workplace. Make workshop
children-proof. Use padlocks, master switches and
remove starter keys to prevent any unintentional
use of power tools.
TOOL SHOULD BE MAINTAKNED:
f.
g.
Keep aH guards in place and in working order.
Keep all parts in working order. Check to determine that the guard or other parts will operate
properly and perform their intended function.
h. Check for damaged parts. Check for alignment of
moving parts, binding of moving parts, breakage of
parts, mounting and any other condition that may
affect a tool's operation.
i.
A guard or other part that is damaged should be
properly repaired or replaced. Do not perform
makeshift repairs (use the parts list provided with
owner's manual to order replacement parts).
OPERATOR SHOULD KNOW HOW TO USE TOOL:
a. Use the right tooa for the job. Do not force a tool
or attachment to do a job for which it was not
designed.
b.
Disconnect
tool when changing accessories,
such as blades, bits, cutters and the like.
c.
Avoid accidental
start-up. Make sure that the
machine is in the "off" position before plugging in.
Do not force a tool. _t will work most efficiently
at the rate for which it was designed.
Use recommended
accessories.
Consult the
owner's manual for recommended accessories.
The use of improper accessories may cause risk of
injury to persons,
d.
e.
f.
g.
h.
g.
a.
b.
c.
d.
e.
Always unplug power tool prior to inspection.
Consult the owner's manualfor specific maintaining and adjusting procedures.
Keep machine lubricated.
Use sharp bKadesand keepthetool clean for safest
operation.
Remove adjusting keys and wrenches. Form
habit of checking to see that keys and adjusting
wrenches are removed from tool before turning on.
FOR POWER TOOLS
i.
Handle the workpiece correctly. Use push sticks
or push blocks when required; protect hands from
possible injury.
Direction of feed. Feed work into a blade or cutter
against direction of rotation of the blade or cutter.
Turn the machine off if it jams. A blade jams when
digs too deeply into the work (the motor force
keeps it stuck in the work).
Never leave a tooJ running unattended. Turn the
power off and do not leave too! until it comes to a
complete stop:
j.
Do not overreach.
balance.
Keep proper footing
and
k.
Never stand on tool. Serious injury could occur if
the tool istipped or if the cutting too! is unintentionally contacted.
I.
Keep hands away from moving parts and cutting
surfaces.
m.
Know your power tool. Learn its operation, application and specific limitations.
CONTENTS
Warranty
................................
2
General Safety instructions
for Power Tools .......................
Operation ................................
Maintenance
.............................
6
8
2
Safety instructions for Planer ................
3
Trouble Shooting ..........................
Parts Illustration for Base ..................
9
10
Parts List for Base ........................
11
and Electrical Requirements
............
Electrical Connections
.....................
4
5
Parts IHustra_ion for Roller Case .............
Parts List for Roller Case ..................
12
13
Unpacking
5
Parts Illustration
14
5
Parts List for Motor
Motor Specifications
Assembly
and Checking Contents
...........
................................
WARNING
The 12 1/2" thickness planer has been marked with
warning labels that need to be observed for safe operation. The operator should be aware of the location and
contents of these labels.
LABEL ON FRONT OF UNIT
WARNING;
FOR SAFE OPERATION SEE OWNER'S MANUAL
Keep hands away during operation.
Allow the automatic feed to function properly.
Do not push or pull workpiece through machine.
Cutterhead must be at a complete stop before
freeing the workplace or making any adjustments.
Do not cut deeper than 1/16".
Wear eye protection.
.................
.......................
Thesawarning labels are placed in specific locations so
they are visible to the operator when starting and
operating the tool.
LABEL ON SIDE OF UNIT
Always use planer with cutterhead guard.
Cutterhead must be at a complete stop
before freeing the workpiece or making
any adjustments.
Use only identical replacement parts,
LABEL ON CUTTERHEAD
GUARD
WARNING
® TO REDUCE RISK OF INJURY,
ATTACH THE SAFETY COVER BEFORE
OPERATING.
FOR 12 1/2" THICKNESS
WARNING:
DO NOT ATTEMPT TO OPERATE
PLANER UNTIL IT IS COMPLETELY ASSEMBLED
ACCORDING TO INSTRUCTIONS.
1, KNOW GENERAL POWER TOOL SAFETY. Make
sure all precautions are understood and provided
for (see page 2),
2. SECURE ALL FASTENERS. Frequently check that
nuts and bolts are tight and have not vibrated loose.
3, FOLLOW OPERATION INSTRUCTIONS. Operate
the planer as described in the manual.
4. DO NOT FORCE THE CUT. Slowing or stalling the
motor will overheat it. Allow the automatic feed to
function properly.
5. SUPPORT WORKPIECE. Do not allow the board
to hang from the planer. Use support rollers,
&
USE QUALITY LUMBER. Blades last longer and
cuts go smoother on good wood.
7. DO NOT PLANE UNDERSIZED WOOD. Boards
which are too thin or too short could split while
being planed.
8. TAKE PRECAUTIONS AGAINST KICKBACK. Do
not permit anyone to stand or cross in line with the
cutterhead's rotation. A kickback or thrown debris
will travel in this direction.
9. KEEP PLANER MAINTAINED.
Follow maintenance instructions (see page 8).
15
LABELS
WARNING:
SAFETY INSTRUCTIONS
for Motor
PLANER
10. DISCONNECT POWER. Turn switch "OFF" and
disconnect power whenever planer is not in use.
CAUTION:
DO NOT ALLOW FAMILIARITY (GAINED
FROM FREQUENT USE OF YOUR PLANER) TO BECOME COMMON PLACE. ALWAYS REMEMBER THAT
A CARELESS FRACTION OF A SECOND IS SUFF!CIENT TO INFLICT SEVERE INJURY.
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 goggles complying with ANSI Z87.1
(shown on package) before commencing power tool
operation. Safety goggles are available at Sears retail or
catalog stores.
"THINK SAFETY: Safety is a combination of operator
common sense and alertness at all times when the
planer is being used.
MOTOR
SPECIFICATIONS
& ELECTRICAL
MOTOR
PROPERLY GROUNDED OUTLET
The 12 1/2" thickness planer is supplied with a motor and
with the wiring installed.
The 120 Volt AC universal motor has the following
specifications:
Max. Developed Horsepower ...................
2
Voltage ...................................
Amperes ..................................
Hertz
.....................................
Phase ..................................
RPM ....................................
120
14
3-PRONG PLUG_I
60
Single
8000
POWER SOURCE
REQUIREMENTS
__
1
GROUNDING PRONG
A temporary adapter, which looks like the adapter illustrated below, may be used to connect this plug to a
two-pole receptacle if a properly grounded outlet is not
available.
1.
The motor is designed for operation on the voltage
and frequency specified above.
The temporary adapter should be used only until a
properly grounded outlet can be installed by a qualified
electrician.
2.
Normal loads will be handled safely on voltages not
more than 10% above or below the specified voltage.
The green colored grounding lug extending from the
adapter must be connected to a permanent ground,
such as a properly grounded outlet box.
3.
Running the unit on voltages which are not within
the range may cause overheating and motor burnout.
Make sure this is
4.
Heaw loads require the voltage at motor terminals
be not less than the voltage specified.
I
connected to a known
ADAPTERI
GROUNDING INSTRUCTIONS
This tool is equipped with a three-conductor cord and
ground type plug which has a grounding prong, approved by Underwriters Laboratories and the Canadian
Standards Association.
Do not remove or alter the grounding prong in any manner.
In the event of a malfunction or breakdown grounding
prov des a path of least resistance for electrical current
to reduce the risk of electrical shock.
The plug must be plugged into a matching outlet that is
properly installed and grounded in accordance with all
local codes and ordinances.
Do not modify the plug provided. If it will not fit in the outlet, have the proper outlet installed by a qualified
electrician.
Improper connection
of the equipment-grounding
conductor can result in a risk of e_ectrical shock.
The conductor with insulation having a green outer surface is the equipment-grounding conductor.
If repair or replacement of the electrical cord or plug is
necessary, make sure the equipment-grounding
conductor is not connected to a line terminal.
Check with a qualified electrician or service personnel if the grounding instructions are not understood,
or if in doubt as to whether the tool is properly
grounded.
The tool has a three-prong plug, such as the one illustrated.
This tool is intended for use on a circuit having a nominal
rating less than 150 volts which has an outlet that looks
like the outlet illustrated.
3-PRON__gr°und
receptacle.
/
__
I_
GROUNDING
LUG
NOTE: The adapter illustrated is for use only if you already have a properly grounded two-prong receptacle.
Adapter is not allowed in Canada by the Canadian
Electrical Code.
EXTENSION CORDS
1.
The use of any extension cord will cause some drop
in the voltage and loss of power.
2.
The wires of the extension cord must be sufficient
in size to carry the current and maintain adequate
voltage.
3.
Use the table below to determine the minimum wire
size (A.W.G.) extension cord.
4.
Use only three-wire extension cords which have
three-prong grounding type plugs and three-pole
receptacles which accept the tool plug.
5.
If power cord is worn, cut or damaged in any way,
have it replaced immediately.
ELECTRICAL CONNECTIONS
Extension Cord Length
Upto 50 ft ..................................
50 - 100 ff ...................................
Wire Size A,W.G.
14
10
NOTE: Using extension cords over 100 ft. long is not
recommended,
ELECTRmCAL CONNECTIONS
WARNING: MAKE SURE THE UNIT IS "OFF" AND
DISCONNECTED
FROM THE POWER SOURCE
BEFORE INSPECTING ANY WIRING.
The motor and wiring are installed as shown in the wiring
diagram (See Figure 1).
The motor is assembled with an approved three-conductor cord to be used on 120 volts as indicated.
The power supply to the motor is controlled by a doublepole rocker switch.
Remove the key to prevent unauthorized use.
The power lines are attached to the switch with quick
connect terminals.
The green ground line must remain securely fastened to
the frame to properly protect against electric shock.
A manual reset overload protector isinstalled in line with
the power supply to the motor. If the planer isoverloaded
the protector will break the circuit.
tf the circuit breaker is tripped, turn the planer "off" and
reset the circuit by pressing the button.
UNPACKING
@
CIRCUIT
BREAKER
REEN
(GROUND)
Figure 1
CAUTION: BE SURE TO TURN THE PLANER "OFF"
PRIOR TO RESEN'ING THE CIRCUIT BREAKER TO
AVOID UNINTENTIONAL START-UP OF THE PLANER.
AND CHECKING
Check for shipping damages. If damage has occurred,
a claim should be filed with the carrier for fastest action.
The planer comes assembled as one unit.
1. Additional parts which need to be fastened to the
unit should be located and accounted for (See
Figure 2),
2. The handwheel attaches to either end of the crank
shaft.
CONTENTS
_oo,,_
...... _T
3.
The knife gauge is provided for removal and adjustment of the knives.
4. Adjusting tools are also !ocated in the parts bag.
CAUTION: DO NOT ATTEMPT ASSEMBLY IF PARTS
ARE MISSING. USE OWNER'S MANUAL TO ORDER
REPLACEMENT PARTS.
*........
.!
_
Figure 2
ASSEMBLY
CLEAN THE PLANER
Assembly and adjustment procedures are easier to perform on a clean unit. Unpainted steel surfaces have been
coated with a shipping preservative. Remove the preser,,ative with kerosene or penetrating oil. Use soap and
water on ruboer and plastic parts. Cleaning fluids tend
to deteriorate them. Non-flammable solvents are recommended.
INSTALL HANDWHEEL
Refer to Figure 4.
1. The handwheel attaches to the shaft (Key No. 17)
for cutterhead adjustment.
2. Place key (Key No. 44) into slot on shaft.
3. Slide handwheel (Key No. 21) onto shaft. Fasten the
handwheel to the shaft with bolt (Key N0.24).
INSTALL KNIFE GUARD
Refer to Figure 5.
1. The knife guard (Key No. 20) attaches to the roller
case. The knife guard directs the flow of chips
removed from the Workpiece and protects against
unintentional contact with the cutterhead.
WARNING: KNIFE GUARD MUST BE FASTENED
SECURELY PRIOR TO ANY TIME THAT THE PLANER
IS PLUGGED IN TO PROPERLY GUARD AGAINST
ACCIDENTAL CONTACT WITH THE CUTTERHEAD,
2. Fasten the I_nife guard using the two socket head
bolts and lock washers (Key Nos, 29 & 34).
MOUNT PLANER TO WORK SURFACE
Refer to Figure 5.
1. The planer is designed to be portable so it can be
moved to the job site, but it should be mounted to
a stable, level bench or table.
2. The base of the planer has mounting I_oles in it.
These holes form a rectangle 17 3/4" x 7 1/2". Use
a square to mark the position on the work surface.
Mount the planer to the work surface by bolting it
through the holes.
4. Drill pilot holes in suffacefor mounting with lag bolts
(Key No. 41).
5. Insert bumpers (Key No. 42) into bottom of the
base. Fasten planer with lag bolts (Key No. 41)
thi'ough mounting holes.
OPERATION
SAFETY PRECAUTIONS
ADJUSTING THE DEPTH OF CUT
WARNING:
Always observe the following safety
precautions.
Whenever adjusting or replacing any parts on the planer
turn the switch off and remove the plug from the power
source.
Check that all fasteners are securely tightened.
Make sure guards are properly attached. Guards should
be fastened securely and working properly.
Make sure that the knives are aligned and properly attached to the cutterhead.
Refer to Figure 5.
The height of the cutter blades is shown by indicators
(Ref. N0.24) located on either side of the planer in-feed
roller support, The indicators ride on scales (Ref. No. 25)
to show the thickness of the planed board.
Be certain that all moving parts are clear of interference.
Check that knives rotate freely without obstruction.
Do not plug the planer in unless the switch is in the "off"
position. After turning the switch on, allow the planer to
come to full speed before operating.
Keep hands clear of all moving parts.
Do not force the work into the knives. Allow the
automatic feed to work properly.
Replace or sharpen knives when they become damaged
or dull.
Always wear eye protection.
DEPTH OF CUT
Thickness planing refers to the sizing of lumber to a
desired thickness while creating a level surface parallel
to the opposite side of the board.
The quality of thickness planing depends on the
operator's judgement about the depth of the cut.
The depth of the cut depends on the width, hardness,
dampness, grain direction and grain structure of the
wood.
The maximum thickness of wood which can be removed
in one pass is 3/32".
For optimum planer performance the depth of the cut
should be less than 1/16".
The board should be planed with shallow cuts until the
work has a level side.
The thickness is adjusted by rotating the handwheel
(Key No. 21) towards the front of the machine to raise
the knife height.
To reduce the knife height,
towards the back.
rotate the handwheel
Do not set the knife below 13/32". Do not plane a board
which is less than 1/2" thick.
The knife height will be moved 1/16" with every complete
revolution of the handwheel.
The action between the crank shaft (Key No. 17) and the
elevation screws (Key Nos.8,9) is coupled with beveled
gears.
If play develops in the action of the handwheels, the
gears have become misaligned.
One or both of the gears (Key No.12) on the elevation
screws must be repositioned to eliminate the play.
Lower the knife height to access the bevel gears.
Loosen the set screw (Key No.13) and firmly hold the
gears together.
Tighten the set screw to lock the position.
When the depth of cut adjustment is operating correctly, make sure that the indicator is positioned correctly.
Make a test cut on a piece of wood and measure the
thickness produced.
Loosen the screw (Key No.22) (Refer to Figure 5) and
set the indicator to show the thickness produced.
Once an even surface has been created, flip the lumber
and create parallel sides.
Plane alternate sides until the desired thickness is obtained.
When half of the total depth of the cut is taken from each
side, the board will have a uniform moisture content and
additional drying will not warp it.
The depth of cut should be shallower when the work is
wider.
When planing hard wood, take light cuts or plane the
wood in thin widths.
Make a test cut when working with a new type of board
or different kind of operation.
Check the accuracy of the test cut prior to working on
finished product.
Figure 3
OPERATION
ADJUSTING THE KNIFE HEIGHT
Refer to Figure 5.
To produce an even surface on a workpiece, the knife
edges must be the same distance from the axis of the
cutterhead.
A knife gauge (Key No.31) has been provided to make
knife adjustment more convenient.
Remove the cutterheed guard (Ke_ No.20) by removing
the fastening bolts (KeyNo.29).
Rotate the cutterhead to access one knife. Use caution
-the blades are sharp.
Position the knife gauge on one side of the cutterheed.
Hold the gauge against the cutterhead so the contact
point is over the knife (See Figure 3).
While holding the gauge, use a hex wrench to loosen the
locking bolts.
Ad ust the knife by turning the adjustment screw. Turn
coiJnterclockwise to ra se the blade.
Adjust the blade so it touches the contact point while the
gauge is firmly held against the cutter head.
Adjust the other side of the blade in the same manner
and tighten the locking bolts securely.
Adjust the other knife in the same manner.
Replace the cutterhead guard and fasten it securely.
ADJUST THE BASE ROLLERS
Refer to Figure 4.
The base of the planer has two rollers in it to improve
feed action.
The cutterhead of the planer is parallel to the bed of the
planer.
The workbase rollers (Key No.2) are positioned beneath
the feed rollers to compensate for the pressure created
by the automatic feed.
The height was set during manufacturing, but should be
checked occasionally.
The rollers should be adjusted about 0,003" above the
table surface.
Use a straightedge across the two rollers and use a feeler
gauge to check the height.
Examine the adjustment of the rollers in several spots to
determine that both rollers are at the correct level in all
spots.
If the rollers require adjustment, loosen the set screws
(Key No.4) and turn the eccentric adjuster (Key No.3) to
position the roller.
Re-check the rollers until the proper position is located.
Secure the position by tightening the set screw.
ADJUSTING THE SUPPORT ROLLERS
The support rollers should be adjusted to help keep the
portion of the work which is outside the planer in line.
Use a straightedge to align the roller plate so the roller
height is even with the planer bed.
Loosen the nuts (Key No.31) and adjust the height with
the hex bolts (Key No.38).
Make sure that both of the hex bolts hold the position of
the roller plate. Hold the hex bolt with an open end
wrench and secure the adjustment by tightening the nut.
(Continued)
Check the alignment of the support roller at each end
with a straightedge.Use the eccentric bushings (Key
No.36) to adjust the position of the roller.
Lock the position by tightening the socket head bolts
(Key No.7).
AVOID DAMAGE TO BLADES
The thickness planer is a precision woodworking
machine and should be used on quality lumber only.
Do not plane dirty boards. Dirt and small stones are
abrasive and will wear the blade.
Remove nails and staples to avoid damaging the blades.
The planer should only cut wood.
Avoid knots. Heavy cross-grain makes knots hard. Also,
knots can come loose an;d jam the blade.
CAUTION: Any particle that may encounter the planer
knives may be projected from the planer, creating the
risk of a hazard.
PREPARING THE WORK
The thickness planer works best when the lumber has at
least one flat surface.
Use a surface planer or jointer to define a flat surface.
Twisted or severely warped boards can jam the planer.
Rip lumber in half to reduce the magnitude of the warp.
The work should be fed with the grain. Sometimes the
grain will switch directions in the middle of the cut.
If possible, cut the board in the middle before planing so
the grain direction is correct.
CAUTION: DO NOT PLANE A BOARD WHICH IS LESS
THAN 12" LONG. THE FORCE OF THE CUT COULD
SPLIT THE BOARD AND CAUSE A KICKBACK.
FEEDING THE WORK
The feed rate refers to the rate at which the lumber travels
through the planer.
The planer feed is automatic. It will vary slightly, depending on the type of wood cut.
The operator is responsible for aligning the work so it will
feed properly.
Stand on the side of the planer to which the height adjustment handwheel was attached.
Lift the work to the in-feed support roller by grasping the
edges of the board at approximately the middle of the
length.
Boards longer than 24" should have additional support
from freestanding material stands.
Rest the board end on the in-feed support roller and
direct the board into the planer.
Push slightly on the board and allow the automatic feed
to take the board. Release the board and allow the
automatic feed to function properly. Do not push or pull
on the workpiece.
CAUTION: DO NOT STAND DIRECTLY IN LINE WITH
THE FRONT OR REAR OFTHE PLANER. WHEN AN OBJECT IS PROJECTED FROM THE PLANER IT WILL
TRAVEL IN THIS DIRECTION.
OPERATION
FEEDING THE WORK (CONTINUED)
Move to the rear and receive the planed lumber by
grasping it in the same manner as it was fed.
Do not grasp any portion of the board which has not
g one past the out-feed support roller.
Repeat this operation on all the boards which need to
be the same thickness or adjust the height.
The planer has return rollers on top so an assistant can
pass work back to the operator.
NOTE: An assistant must follow the same precautions
as the operator.
The surface that the planer will produce will be smoother
if: a shallower depth of cut is used.
A snipe is a depression at either end of the board, caused
by an uneven force on the cutter head when work is
entering or leaving the planer.
A snipe will occur when boards are not supported
properly (see Adjusting the Support Rollers).
A slight snipe may still be noticed when the board is supported.
(Continued)
An uneven force is created when only one feed roller is
in contact with the work at the beginning or end of the
cut.
The snipe is more apparent when deeper cuts are being
taken.
When planing more than one board of the same thickness, butt the boards together to avoid the snipe.
Feed the work in the direction of the grain. Wood fed
against the grain will have chipped, splintered edges.
CHECKING FOR WORN KNIVES
The condition of knives will affect the precision of the cut.
Observe the quality of the cut which the planer produces
to check the condition of the knives.
Dull knives will tear, rather than sever wood fibers, and
produce a fuzzy appearance.
A raised grain will occur when dull knives pound on
wood that has a varying density.
A raised edge will be produced where the knives have
been nicked.
MAINTENANCE
Planer will operate best if it is kept in good condition.
Keep the unit adjusted as described in OPERATION.
Also, the knives must.be kept clean and sharp to ensure
the quality of cut and efficiency of operation.
WARNING:
MAKE CERTAIN THAT THE UNIT IS
D_SCONNECTED
FROM THE POWER SOURCE
BEFORE ATTEMPTING TO SERVICE_ OR REMOVE
ANY COMPONENT.
CLEANING THE KNIVES
Gum and pitch will collect on knives and cause excess
friction when working. Knives will overheat and wear at
an accelerated rate. Use a gum and pitch remover to
keep blades clean.
WHETTING THE KNIVES
Knives can be kept sharp by whetting them with a sharpening stone.
Remove the cutterhead guard. Partially cover the stone
with paper to protect the roller case.
Position cutterhead so stone will contact knife along its
beveled surface.
Stroke the stone across knife from one side to the other
while stone is also moved slightly in the direction of the
feed.
Make sure to do the same number of strokes on both
knives.
Replace the cutterhead guard.
REMOVING KNIVES
Knives that are noticeably nicked or worn must be resurfaced to a new beveled edge.
Remove knives one at a time. Hold knife with knife gauge
(see Figure 3).
Loosen the knife locking bolts and remove knives.
NOTE: Many shops do not have the capability to resurface knives. The Yellow Pages should list "Sharpening
Services" or "Tool Grinding".
REPLACEMENT
KNIVES
Often replacing knives is less expensive than resurfacing them. Keeping a spare set of knives on hand is
recommended. Knives should always be sharpened or
replaced as a matched set.
To replace the sharpened knives reverse the steps used
in removing the knives. Adjust knives as described in ADJUSTING THE KNIFE HEIGHT, page 7.
LUBRICATION
Motor and cutterhead bearings are sealed and need no
lubrication. Height adjustment guides and elevation
screws should be cleaned of debris and greased when
needed.
Occasionally apply a few drops of light machine oil to
the gibs to keep the roller casing sliding freely in relation
to the base.
TROUBLE SHOOTING
PROBLEM
POSSIBLE CAUSE
Snipe
REMEDY
Dull knives
1.
Replace or sharpen knives per instructions
Inadequate support of long boards
2.
Support long boards
(Gouging at ends
of Board)
Fuzzy Grain
(See "Maintenance", Page 8)
2.
3.
Uneven feed rol! pressure
3.
Checkfeed
4.
Cutter casting not aligned
5.
Lumber not butted properly
4.
5.
Check position on elevation screws
Butt end to end each piece of stock as
boards pass through planer
6.
Support rollers misaligned
6.
Adjust support rollers
1.
Planing wood with a high moisture
1. Remove high moisture content from wood
content
Torn Grain
Rough Raised
Grain
Uneven Depth
Cut Side to side
Cutterhead
Elevation
Adjusts
with
roll operation
by drying
1,
Too heavy a cut
1.
Review"Depth
2,
3,
Knives cutting against grain
Dull knives
2.
3.
Review"Feeding the Work", Page 7
Replace or sharpen knives per instructions
(See "Maintenance", Page 8)
of Cut", Page 6
1,
Dull Knives
1,
Replace or sharpen knives per instructions
(See "Maintenance", Page 8)
2.
3.
Too heaw a cut
Moisture content too high
2.
3.
Review "Depth of Cut", Page 6
Dry the wood or use dried wood
1.
Knife projection not uniform
1.
Adjust knife projection (See "Adjust the Knife
Height", Page 7)
2.
Cutterhead not leveled to
planer bed
2,
Rollerhead case not level; adjust
elevation screws
1.
2.
Beveled gears dirty
Elevation screws dirty
1,
2.
Clean and lubricate beveled gears
Clean and lubricate elevation screws
3.
Gears or screws worn
3.
Replace
DifficUlty
4.
Friction between casing & covers
4.
Clean, lubricate
Board Thickness
Does Not Match
1.
2.
Indicator not set correctly
Knife projection incorrect
1. Adjust indicator/securely tighten
2. Set knife projection correctly
Depth Of Cut
Scale
Chain Jumping
ON/OFF
W'iil Not Turn On
(See "Maintenance",
Page 8)
1.
2.
Sprockets worn
Chain worn
1.
2.
Replace sprockets
1.
Switch malfunction
1.
Have a qualified electrician replace the
ON!OFF switch
2.
Circuit breaker tripped
2.
Reset circuit breaker. (Be sure planer is
disconnected from power source.)
Replace chain
15
37
3
39
52
Z1
55
o
7
!
4Z
53
T
7
5
5
Figure 4 - Replacement Parts Illustration for Base
2
35
36
3O
REPLACEMENT
KEY
No.
1
2
3
4
5
DESCRIPTION
Base
Base roller
Eccentric adjusters
Set screw, 6mm - 1.0 x 8
* Bearing, 608
PARTS LIST FOR BASE
PART
No.
QTY.
3801.00
3802.00
3803.00
1043.00
STD315485
1
2
4
4
4
24
25
26
27
28
Bolt, socket head, 6mm-1.0 x 16
Top cover
Support roller
Washer, lock, 8mm
Top handle
1760.00
3822.00
3823.00
0824.00
3824.00
1
1
2
4
2
KEY
NO.
PART
DESCRIPTION
No.
QTY.
6
7
8 '
9
10
Guide plate
Bolt, socket head, 6mm-1.0 x 10
Elevation screw, LH. thread
Elevation screw, R.H. thread
Set plate
3805.00
3806.00
38O7.O0
3808.00
3809.00
2
2O
1
1
2
29
30
31
32
33
Bolt, socket head, 8mm-1.25 x 20
Roller plate
Hex nut, 6ram - 1.0
Washer, wavy, 8mm
Pivot bolt
1064.00
3825.00
0875.00
3826.00
3827.00
4
2
4
8
4
11
12
13
14
15
Spring
Beveled gear
Set screw, 6mm - 1.0 x 10
Cover, left side
Cover, right side
3810.00
3811.00
0183.00
3813.00
3814.00
2
2
4
1
I
34
35
36
37
38
Top roller
Washer, lock, 6mm
Eccentric bushing
Shaft cover
Bolt, hex head, 6ram-1.0 x 25
3828.00
1514.00
3830.00
3852.00
0870.00
2
4
4
1
4
16
17
18
19
20
21
22
23
Bracket
Shaft
"E" Ring, 12mm
Key, 4mmx 10mm
Beveled gear
Handwheel
Handle, handwheel
Handle screw
3815.00
4268.00
3817.00
1531.00
3818.00
4271.00
3820.00
39
40
41
42
43
44
Screw, pan head, 6ram-1.0 x 10
Spacer
Lag bolt
Bumper, (Set of 4)
Washer, flat, 6mm
Key, 4ram x 8mm
3812.00
3887.00
1649.00
3890.00
0871,00
3873.00
4
4
4
1
1
1
!
2
1
2
2
2
1
1
3821.00
!
1
Always order by Part No.; Not by Key No.
* Standard hardware item available locally.
2O
12
31
10
3
1
24
22
6
2
24
14
28
Figure 5 - Replacement Parts Illustration for Roller Case
12
REPLACEMENT
Key
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
*
PARTS LIST FOR ROLLER CASE
Description
Roller case
Cutterhead
Planer knives, (set)
Cutter head gib, (set)
Bolt, flat head, 5ram - .80 x 12
* Bearing, 6202
Retaining ring, Int. - 35ram
* Bearing, 6203
Retaining ring, Int. - 40mm
Key, 5ram x 10ram
Drive pulley
Poly V-belt, 135J-6
Nut, 16ram - 1.50
Feed roller
Retaining bracket
Spring
Bracket
Screw, pan head, 5ram-.80 x 10
* Retaining ring, Ext. - 15mm
Knife guard
Belt guard
Screw, pan head, 4mm-.70 x 8
Wear plate
Indicator
Scale
Knife locking bolt
Chain sprocket
Chain, #410 - 26P
Bolt, socket head, 5ram-.80 x 10
Spacer
Knife gauge
Washer, flat, 4mm
Roll pin, 4ram x 8mm
Washer, lock, 5mm
Standard hardware item available locally.
13
Part
No,
3831.00
3832.00
3833.00
3834.00
3835.00
STD315225
3836.00
STD315235
3838:00
3839.00
3840.00
3841,00
3829.00
3842.00
3843.00
3844.00
3845.00
1784.00
STD582056
3847.00
3848.00
0781.00
3849.00
3850.00
3851.00
2706.00
3853.00
3854.00
3855.00
3856.00
3879.00
3888.00
4282.00
1808.00
Qty.
1
1
1
1
4
1
1
1
1
1
1
1
1
2
4
4
4
8
2
1
1
4
4
2
2
14
3
2
2
1
1
4
4
2
51
10
5O
>
3
2
5o
29
45
\
3O
52
_
\43
32
27
48
33
Figure S- Replacement Parts Illustration for Motor
REPLACEMENT
KEY
NO.
DESCRIPTION
PARTS LmST FOR MOTOR
PART NO.
QTY.
KEY
NO.
PART NO.
QTY.
Chain sprocket
3853.00
1
29
Switch cover
3880.00
1
30
Switch box
4286.00
1
Switch with key
0423.00
1
Circuit breaker
4287.00
I
33
Switch bracket
3891.00
1
0781.00
2
3882.00
1
1
Motor housing
3857.00
1
28
2
Stator
4283.00
1
3
Fan casing
4284.00
1
4
Fan
3860.00
1
3t
5
Aligning bushing
3861.00
4
32
STD315215
1
6
7
* Bearing, 620t
Armature
DESCRIPTION
4285.00
1
34
8
* Bearing, 6200
STD315205
1
35
4-.70 x 8ram Screw, pan head
Line cord
9
Motor pulley
3865.00
1
36
Line cord holder
3883.00
1
10
Brush holder
3866.00
2
37
Line cord clamp
3884.00
1
11
Carbon brush, (set of 2)
3867.00
1
38
4-1.50 x 16ram Screw, pan head
3885.00
4
12
Brush cap
3868.00
2
39
5-1.60 x 50ram Screw, pan head
1544.00
3
13
5-.80 x 10ram Screw, set
1838.00
2
40
Aligning pin
3886.00
2
14
Gear box bracket
3869.00
1
41
6-1.60 x 20ram Bolt, socket head (TF)
3180.00
2
15
Gear box
3870.00
1
42
6-1.0 x 20ram Bolt, socket head
!515.00
2
16
Pinion shaft
3871b0
1
43
Hitch pin
3889.00
3
17
Gear
3872.00
1
44
5mm Washer, star
1474.00
3
18
4 x 8mm Key
3873.00
1
45
5-1.60 x 60ram Screw, pan head
1643.00
1
t9
Pinion shaft
3874.00
1
46
6mm Washer, lock
1514.00
4
20
Gear
3875.00
1
47
4ram Washer, fiat
3888.00
2
21
3 x 8ram Key
Gear
3846.00
1
48
5-.80 x 10ram Screw, pan head
1504.00
1
3876.00
1
49
Terminal connector
1251.00
1
Gear shaft
3877.00
1
50
5-1.60 x 70ram Screw, pan head
4288.00
2
STD315225
1
51
1"Motor assembly
6548.00
1
1531.00
1
52
Gear box assembiy
Owner's Manual
6549.00
1
@
4290.01
1
23
24
* Bearing, 6202
25
4 x 10ram Key
26
* 15ram Retaining ring, external
STD582056
2
27
* Bearing, 6002
STD315525
1
*
o
Standard hardware item, available Iocally.
Not shown.
1"
Assembly includes Key Nos. 1 through 50 (except for Key No. 28).
12 1/2"
OWNER'S
_ANUAL
SERVICE
ickness
Planer
Thank you for purchasing your 12 1/2" Thickness Planer from
Sears. This unit will provide you with many years of reliable
service. Should the need exist for repair parts or service,
simply contact any Sears Service Center and most Sears,
Roebuck and Co. stores. Be sure t o provide all pertinen t facts
when you call or visit. The model number of your Thickness
Planer ls on the side of the planer.
MODEL NO.
351.233731
HOW TO ORDER
REPAIR PARTS
All parts listed may be ordered from any Sears Service
Center and most Sears stores. If the parts you need are not
stocked locally, your order will be electronically transmitted
to a Sears Repair Parts Distribution Center for handling.
When ordering replacement parts, always give the following
information:
NAME OF ITIEM: 12 1/2" Thickness Planer
MODEL NUMBER: 351.233731
PART NUMBER:
PART DESCRIPTION:
_,..o. 0,_.. ,,._
Sold by SEARS_ ROEBUCK
n_
AND CO., Chicago,
iL 60684 U.S.A. ©
O_t_her
1991