CRAFTSMAN 137.283290 Belt Disc Sander Owner’s Manual

CRAFTSMAN 137.283290 Belt Disc Sander

Product Information

Product Specifications

• MOTOR: 120V, 60 HZ, 4.2 AMPS
• HORSEPOWER: 2/3 (Max. Developed)
• SPEEDS:
  • MOTOR: 3450 RPM
  • BELT: 1760 FPM
  • DISC: 2800 RPM
• SIZES:
  • BELT: 4 X 36
  • DISC: 6
• TABLE: Adjustable
• TABLE   TILT: Adjustable
• BELT ARM TILT: Adjustable
• MITER GAUGE: Included

Safety Instructions

Before using this Belt / Disc Sander, it is important to follow these safety instructions:

1. Read and become familiar with the entire instruction manual.
2. Learn the tool’s applications, limitations, and possible hazards.
3. Keep guards in place and working order.
4. Remove adjusting keys and wrenches before turning ON the tool.
5. Keep the work area clean to avoid accidents.

Accessories and Attachments

The Belt / Disc Sander comes with the following accessories and attachments:

• Miter gauge

Carton Contents

The contents of the carton include:

• Belt / Disc Sander
• Instruction manual

Know your Belt/Disc, Sander

It is important to familiarize yourself with the different parts and features of the Belt / Disc Sander:

• Motor
• Belt
• Disc
• Table (adjustable)
• Table tilt (adjustable)
• Belt arm tilt (adjustable)
• Miter gauge

Assembly and Adjustments

Follow these steps to assemble and adjust the Belt / Disc Sander:

1. Refer to the instruction manual for detailed assembly instructions.
2. Ensure all parts are securely attached and tightened.
3. Adjust the table height and tilt according to your needs.
4. Adjust the belt arm tilt for proper sanding angles.

Operation

To operate the Belt / Disc Sander, follow these steps:

1. Ensure the power cord is properly connected to a 120V, 15 amp branch circuit.
2. Turn ON the tool using the power switch.
3. Select the desired speed for the motor, belt, and disc.
4. Securely hold the workpiece and feed it into the belt or disc for sanding.
5. Use the miter gauge for angled cuts or precise sanding.

Maintenance

To ensure the optimal performance and longevity of the Belt / Disc Sander, perform regular maintenance:

1. Regularly clean the tool and remove any debris or dust.
2. Inspect the power cord for any wear, cuts, or damage. Replace if necessary.
3. Keep the working area clean and free from clutter.

Troubleshooting Guide

If you encounter any issues with the Belt / Disc Sander, refer to the troubleshooting guide in the instruction manual for assistance.

Parts

A detailed parts list can be found in the instruction manual.

FAQ (Frequently Asked Questions)

Q: How do I adjust the table tilt on the Belt / Disc Sander?

• A: To adjust the table tilt, refer to the instruction manual for detailed instructions on how to use the table tilt adjustment mechanism.

Q: Can I use the Belt / Disc Sander for commercial or rental purposes?

• A: The warranty for commercial or rental use is limited to 90 days from the date of purchase.
• Please refer to the warranty section in the instruction manual for more information.

Q: What should I do if the power cord is worn or damaged?

• A: To avoid electrical hazards, replace the power cord immediately if it is worn, cut, or damaged in any way.
• Refer to the maintenance section in the instruction manual for instructions on how to replace the power cord.

CAUTION:

• Before using this Belt / Disc Sander, read this manual and follow all its Safety Rules and Operating Instructions.

WARRANTY

FULL TWO YEAR WARRANTY

• If this product fails due to a defect in material or workmanship within two years from the date of purchase, Sears will at its option repair or replace it free of charge.
• Contact a Sears Service Center for repair.
• If this product is used for commercial or rental purposes, this warranty applies only for 90 days from the date of purchase.
• This warranty is in addition to any statutory warranty.
• Sears Canada Inc., Toronto M5B 2B8

PRODUCT SPECIFICATIONS

• MOTOR 120V, 60 HZ, 4.2 AMPS
• HORSEPOWER ……….. 2/3 (Max. Developed)

SPEEDS:

• MOTOR ………….. 3450 RPM
• BELT ……………. 1760 FPM
• DISC …. ………… 2800 RPM

SIZES:

• BELT ……………. 4″ X 36″
• DISC ……………. 6″
• TABLE ……………… DISC / BELT
• TABLE TILT ………….. 0° TO 45°
• BELT ARM TILT ……….. 0° TO 90°
• MITER GAUGE ……….. YES

WARNING

• To avoid electrical hazards, fire hazards, or damage to the tool, use proper circuit protection.
• Your bench belt/disc sander is wired at the factory for 120V operation. Connect to a 120V, 15 amp branch circuit and use a 15 amp time delay fuse or circuit breaker.
• To avoid shock or fire, replace the power cord immediately if it is worn, cut, or damaged in any way.

SAFETY

GENERAL SAFETY INSTRUCTIONS BEFORE USING THE BELT / DISC SANDER Safety is a combination of common sense, staying alert, and knowing how to use your belt/disc sander.

WARNING

To avoid mistakes that could cause serious injury, do not plug the belt/disc sander in until you have read and understood the following

1. READ and become familiar with this entire instruction manual. LEARN the tool’s applications, limitations, and possible hazards.

2. KEEP GUARDS IN PLACE and in working order.

3. REMOVE ADJUSTING KEYS AND WRENCHES.

   • Form the habit of checking to see that keys and adjusting wrenches are removed from the tool before turning ON.

4. KEEP THE WORK AREA CLEAN. Cluttered areas and benches invite accidents.

5. DON’T USE IN A DANGEROUS ENVIRONMENT.

   • Don’t use power tools in damp locations, or expose them to rain. Keep the work area well-lighted.

6. KEEP CHILDREN AWAY. All visitors should be kept at a safe distance from the work area.

7. MAKE WORKSHOP KID PROOF with padlocks, master switches, or by removing starter keys.

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

9. USE THE RIGHT TOOL. Don’t force the tool or the attachment to do a job for which it was not designed.

10. USE PROPER EXTENSION CORD. Make sure your extension cord is in good condition. When using an extension cord, be sure to use one heavy enough to carry the current your product will draw. An undersized cord will cause a drop in line voltage resulting in loss of power and overheating. The table on page 5 shows the correct size to use depending on cord length and nameplate ampere rating. If in doubt, use the next heavier gauge. The smaller the gauge number, the heavier the cord.

11. WEAR PROPER APPAREL. DO NOT wear loose clothing, gloves, neckties, rings, bracelets, or other jewelry that may get caught in moving parts.
    Nonslip footwear is recommended. Wear a protective hair covering to contain long hair.

12. ALWAYS WEAR EYE PROTECTION. Any belt/disc sander can throw foreign objects into the eyes which could cause permanent eye damage.

    • ALWAYS wear Safety Goggles (not glasses) that comply with ANSI safety standard Z87.1. Everyday eyeglasses have only impact-resistant lenses. They ARE NOT safety glasses. Safety Goggles are available at Sears.
    • NOTE: Glasses or goggles not in compliance with ANSI 287.1 could seriously hurt you when they break.

13. WEAR A FACE MASK OR DUST MASK. The sanding operation produces dust.

14. SECURE WORK. Use clamps or a vise to hold work when practical. It’s safer than using your hand and it frees both hands to operate the tool.

15. DISCONNECT TOOLS before servicing, and when changing accessories, such as blades, bits, cutters, and the like.

16. REDUCE THE RISK OF UNINTENTIONAL STARTING.

    • Make sure the switch is in the OFF position before plugging in.

17. USE RECOMMENDED ACCESSORIES. Consult the owner’s manual for the recommended accessories.

    • The use of improper accessories may cause a risk of injury to persons.

18. NEVER STAND ON TOOL. Serious injury could occur if the tool is tipped or if the cutting tool is unintentionally contacted.

19. CHECK FOR 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 moving 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.

20. NEVER LEAVE TOOL RUNNING UNATTENDED.

    • TURN THE POWER OFF. Don’t leave the tool until it comes to a complete stop.

21. DON’T OVERREACH. Keep proper footing and balance at all times.

22. MAINTAIN TOOLS WITH CARE. Keep tools sharp and clean for the best and safest performance. Follow instructions for lubricating and changing accessories.

23. DO NOT use power tools in the presence of flammable liquids or gases.

24. DO NOT operate the tool if you are under the influence of any drugs, alcohol or medication that could affect your ability to use the tool properly.

25. Dust generated from certain materials can be hazardous to your health. Always operate the belt/disc sander in a well-ventilated area and provide for proper dust removal. Use dust collection systems whenever possible.

SPECIFIC SAFETY INSTRUCTIONS FOR BELT / DISC SANDER

WARNING

For your safety, do not try to use your belt/disc sander or plug it in until it is completely assembled and installed according to the instructions, and until you have read and understood this instruction manual:

1. THIS SANDER IS DESIGNED TO SAND WOOD OR WOOD-LIKE PRODUCTS ONLY. Sanding or grinding other materials could result in fire, injury, or damage to the workpiece.
2. USE sander on horizontal surfaces only. Operating the sander when mounted on non-horizontal surfaces might result in motor damage.
3. TO STOP it from tipping over or moving when in use, the sander must be securely fastened to a bench top or supporting surface.
4. PLACE the sander so neither the user nor bystanders are forced to stand in line with the abrasive belt or disc.
5. MAKE SURE the sanding belt is installed in the correct direction. See the directional arrow on the back of the belt.
6. ALWAYS have the tracking adjusted properly so the belt does not run off the pulleys.
7. DO NOT USE sanding belts or discs that are damaged, torn, or loose. Use only the correct size sanding belt and disc.
8. Narrower belts uncover parts that could trap fingers.
9. MAKE SURE there are no nails or foreign objects in the part of the workpiece to be sanded.
10. ALWAYS HOLD the workpiece firmly when sanding. Keep hands away from sanding belts or discs. Sand only one workpiece at a time.
11. ALWAYS HOLD the workpiece firmly on the table when using the disc sander and when using the belt sander.
12. ALWAYS SAND ON THE DOWNWARD SIDE of the sanding disc when using the disc sander. Sanding on the upward side of the disc could cause the workpiece to fly out of position, resulting in injury.
13. ALWAYS maintain a minimum clearance of 1/16 inch or less between the table or backstop and the sanding belt or disc.
14. DO NOT sand pieces of material that are too small to be safely supported. KEEP fingers away from where the belt goes into the dust trap.
15. WHEN sanding a large workpiece, provide additional support at table height.
16. DO NOT sand with the workpiece unsupported. Support the workpiece with the backstop or table. The only exception is curved work performed on the outer sanding drum. Plan your work support.
17. NEVER USE ANOTHER PERSON as additional support for a workpiece longer or wider than the table.
18. ALWAYS remove scrap pieces and other objects from the table, backstop, or belt before turning the sander “ON.”
19. NEVER perform layout, assembly, or set-up work on the table while the sander is operating.
20. NEVER use solvents to clean plastic parts. Solvents could dissolve or otherwise damage the material. Use only a soft damp cloth to clean plastic parts.
21. SHOULD any part of your sander be missing, damaged, or failing in any way, or any electrical components fail to perform properly, shut off the switch and remove the plug from the power supply outlet. Replace missing, damaged or failed parts before resuming operation.
22. NEVER PULL THE POWER CORD out of the receptacle.
    • Keep cords away from heat, oil, and sharp edges.
23. HAVE AN ELECTRICIAN REPLACE OR REPAIR damaged or worn cords immediately.
24. When using the belt to grind or sharpen metal or plastic material:

• DO NOT wet grind or polish. Never use a steady stream of water on the workpiece. Dip or quench the workpiece in water to cool it.
  DO NOT OVERHEAT THE WORKPIECE. Move metal across the abrasive and cool it when it becomes hot.
  DO NOT grind or polish magnesium. It could CATCH on fire.

GROUNDING INSTRUCTIONS

• IN THE EVENT OF A MALFUNCTION OR BREAKDOWN, grounding provides a path of least resistance for electric current and reduces the risk of electric shock.
• This tool is equipped with an electric cord that has an equipment grounding conductor and a grounding plug. The plug MUST be plugged into a matching receptacle that is properly installed and grounded under ALL local codes and ordinances.
• DO NOT MODIFY THE PLUG PROVIDED. If it will not fit the receptacle, have the proper receptacle installed by a qualified electrician.
• IMPROPER CONNECTION of the equipment grounding conductor can result in a risk of electric shock. The conductor with the green insulation (with or without yellow stripes) is the equipment grounding conductor.
• If repair or replacement of the electric cord or plug is necessary, DO NOT connect the equipment grounding conductor to a live terminal.
• CHECK with a qualified electrician or service personnel if you do not completely understand the grounding instructions, or if you are not sure the tool is properly grounded.
• USE ONLY 3-WIRE EXTENSION CORDS THAT HAVE 3-PRONG GROUNDING PLUGS AND 3-POLE RECEPTACLES THAT ACCEPT THE TOOL’S PLUG. REPAIR OR REPLACE DAMAGED OR WORN CORDS IMMEDIATELY.

GUIDELINES FOR EXTENSION CORDS

• USE PROPER EXTENSION CORD. Make sure your extension cord is in good condition. When using an extension cord, be sure to use one heavy enough to carry the current your product will draw.
• An undersized cord will cause a drop in line voltage resulting in loss of power and overheating. The table below shows the correct size to use depending on cord length and nameplate ampere rating.
• If in doubt, use the next heavier gauge. The smaller the gauge number, the heavier the cord.
• Be sure your extension cord is properly wired and in good condition. Always replace a damaged extension cord or have it repaired by a qualified person before using it.
• Protect your extension cords from sharp objects, excessive heat, and wet areas.
• Use a separate electrical circuit for your tools. This circuit must not be less than #12 wire and should be protected with a 15 Amp time lag fuse.
• Before connecting the motor to the power line, make sure the switch is in the OFF position and the electric current is rated the same as the current stamped on the motor nameplate.
• Running at a lower voltage will damage the motor.
• This tool is intended for use on a circuit that has a receptacle like the one illustrated in FIGURE A.
• FIGURE A shows a 3-prong electrical plug and receptacle that has a grounding conductor. If a properly grounded receptacle is not available, an adapter (FIGURE B) can be used to temporarily connect this plug to a 2-contact ungrounded receptacle. The temporary adapter should be used only until a properly grounded receptacle can be installed by a qualified technician. The adapter (FIGURE B) has a rigid lug extending from it that MUST be connected to a permanent earth ground, such as a properly grounded receptacle box. The Canadian Electrical Code prohibits the use of adapters.
• CAUTION: In all cases, make certain the receptacle in question is properly grounded. If you are not sure have a certified electrician check the receptacle.

WARNING

• This belt/disc sander is for indoor use only. Do not be exposed to rain or use in damp locations.

WARNING

• This tool must be grounded while in use to protect the operator from electrical shock.

ACCESSORIES AND ATTACHMENTS

AVAILABLE ACCESSORIES

WARNING

• Use only accessories recommended for this belt/disc sander. Follow the instructions that accompany accessories.
• The use of improper accessories may cause hazards.
• Visit your Sears Hardware Department or see the Sears Power and Hand Tool Catalog for the following accessories:
• Adhesive-backed Discs 6 inch: Fine, Medium, or Coarse Grits
• Sanding Belts 4 x 36 inch: Fine, Medium, Coarse, or Extra Coarse Grits
• Abrasive Disc & Belt cleaner

WARNING

• Use only accessories designed for this belt/disc sander to avoid injury from thrown broken parts or workpieces.
• Sears may recommend other accessories not listed in this manual. See your nearest Sears store or Power and Hand Tool Catalog for other accessories.
• Do not use any accessory unless you have completely read the instructions or owner’s manual for that accessory.

CARTON CONTENTS

WARNING

• If any part is missing or damaged, do not plug the belt/disc sander in until the missing or damaged part is replaced, and assembly is complete.
• Carefully unpack the belt/disc sander and all its parts, and compare against the illustration below.
• To protect the belt/disc sander from moisture, a protective coating has been applied to the machined surfaces. Remove this coating with a soft cloth moistened with WD-40.

WARNING

• To avoid fire or toxic reaction, never use gasoline, naphtha, acetone, lacquer thinner, or similar highly volatile solvents to clean the belt/disc sander.

KNOW YOUR BENCH BELT / DISC SANDER

ASSEMBLY AND ADJUSTMENTS

ASSEMBLY INSTRUCTIONS WARNING

• To avoid injury, always keep the plug disconnected from the power source and the switch turned OFF until the sander is completely assembled and adjusted properly.

WARNING

• For your safety, never connect plug to the power source outlet until all assembly and adjustment steps are completed, and you have read and understood the safety and operating instructions.

TOOLS NEEDED

MOUNTING BELT AND DISC SANDER TO WORKBENCH (FIG: B)

1. belt/disc sander base
2. Bolt
3. Flat washer
4. Rubber washer
5. 1/2″ Foam pad (optional)
6. Worksurface
7. Flat washer
8. Lockwasher
9. Hex nut
10. Jam nut

PULLEY BELT ADJUSTMENT (FIG. C AND D)

1. Loosen the two hex screws (1) with the wrench provided, and move the sanding arm (2) to the vertical position.
   • Then tighten the two screws. (Fig. C)
2. Loosen lock nut (3), and belt tension set screw (4) by turning it counterclockwise.
3. Raise the motor pulley (5) to replace or remove the existing belt. Place new belt (6) on both pulleys (5) and (7).
4. At the center span of the pulleys, apply light pressure to the belt. At the same time tighten set screw (4) by turning it clockwise, until the belt is just stretched.
   • Reapply light pressure to the belt and maintain belt tension between 1/4″ to 1/2″ deflection.
   • IMPORTANT: Do not over-tighten belt tension because it does not require excessive tension to function properly. Excessive tension will reduce motor and belt life.
5. After correct tension is obtained tighten the lock nut (3), and position the sanding arm (2) in the horizontal position by loosening the two hex screws (1). Retighten hex screws.

PULLEY COVER INSTALLATION (FIG. E)

• Attach pulley cover (1) using the 40mm long pan head screw (2) and 12mm pan head screw (3), as shown.
• Tighten screws securely.

SANDING DISC PLATE INSTALLATION (FIG. F)

1. Thread a 1/4″ set screw (1), into the tapped hole on the hub of the sanding disc plate (2). Turn clockwise to tighten.
2. Slide sanding disc plate (2), on drive shaft (3) making sure flat on the drive shaft is aligned with set screw (1) in the hub of disc plate (2). Slide the disc plate onto the shaft until the disc plate surface and edge of the pulley cover are nearly flush.
3. Insert hex wrench, down through slot (4) at the top of belt and pulley guard, and tighten set screw (1) against flat on drive shaft (3).

SANDING DISC INSTALLATION (FIG. G)

Remove and clean any adhesive or material left on the disc plate (2). Peel plastic backing from the abrasive disc (1) and carefully press the disc firmly in position around the sanding disc.

DISC COVER INSTALLATION (FIG. H)

1. Position disc cover (1) in place as shown.
2. Insert the two 1/2″ pan head screws (2) and tighten.

TABLE ASSEMBLY INSTALLATION (FIG. I)

The worktable can be used with either the sanding disc or the sanding belt. It should be used to support workpieces in all sanding operations except inside curve applications.

1. Insert the table support rod (1) into the sander base hole as shown. The table support rod should extend 5″ outside of the sander base.
2. Align the round side of the support rod (1) with the hex bolt (2) and tighten the bolt.
3. Slide table assembly (3) onto rod (1).
4. Adjust the table, align the flat side of the support rod with the hex bolt (4) on the table bracket, and tighten.

WARNING

• To avoid trapping the workpiece or fingers between the table and the sanding disc, the table edge should be positioned a maximum of 1/16″ from the sanding disc plate, as shown in FIG. I.
  The backstop prevents the workpiece from being pulled or dragged beyond the sanding arm.

• It should always be used to help control the workpiece.

BACKSTOP INSTALLATION (FIG. J)

• Position the backstop (1) on the sanding arm (2).
• Place washer (3) on hex bolt (4). Insert the bolt through the slotted hole into the threaded hole in the side of the sanding arm.
• Tighten the hex bolt securely.

DUST CHUTE INSTALLATION (FIG. K)

1. Position the dust chute (1) on the sanding arm as shown.
2. Place washers on two pan screws (2). Insert the screws through the slots on the side of the dust chute into the threaded holes on the sanding arm (3).
3. Tighten screws securely.

ADJUSTMENTS

WARNING

To avoid injury, always keep the plug disconnected from the power source and the switch turned OFF until the sander is completely assembled and adjusted properly.

ADJUSTING TABLE SQUARE WITH SANDING DISC (FIG L)

1. Using a combination square (1 ), place one side of the square on the table (2) with the other side against the sanding disc (3), and check to see if the table is good to the disc.
2. If the table surface is not go0 to the disc, loosen the table lock knob (4), adjust the table square with the disc, and tighten the lock knob (4).
3. Adjust pointer (5) to the 0° mark on the angle scale, using a screwdriver.

To avoid trapping the workpiece or fingers between the table and the sanding disc, the table edge should be positioned a maximum of 1/16″ from the sanding disc plate.

ADJUSTING THE TABLE TO BE HORIZONTAL (FIG M)

1.  Place the level on a table parallel to the disc.
2. If not level, hold the table, and loosen bolt (1 ).
3. Adjust to horizontal and retighten the bolt.

ADJUSTING TABLE ANGLE (FIG. N)

• The table can be tilted from 0° to 45° by loosening the table lock knob (1), tilting the table to the desired angle, and tightening the table lock knob (1).

WARNING

• After tilting the table, the table assembly must be repositioned on the support rod to a maximum of 1/16″ distance between the sanding disc and the edge of the table, to avoid trapping the work or fingers between the disc and table.

SAFETY POWER SWITCH (FIG. O)

WARNING

• To avoid injury, always keep the plug disconnected from the power source and the switch turned OFF until the sander is completely assembled and adjusted properly.
• The ON-OFF toggle switch (1) is located on the side of the sanding machine. Pull the toggle switch up to turn the tool ON and down to turn it OFF. The toggle switch has a switch key (2) for locking the switch in the OFF position.
• IMPORTANT: When removing the switch key from the toggle switch, always push the switch down to the OFF position and pull the yellow key out.

WRENCH STORAGE

1/8 INCH HEX WRENCH (FIG. P)

Insert the long end of the hex wrench (1) through the holes (2) located on the back surface of the pulley cover, as shown.

WRENCH (FIG. Q)

Insert the handle of the wrench into the metal clip located on the sander as shown.

MITER GAUGE (FIG. R)

• A miter gauge (1) is supplied with your sander and is used with the disc table. The miter gauge body can be tilted 0° to 45° right or left for angle or miter sanding.
• Install the slide rod into the table slot (2) as shown.
• Loosen the lock knob (3), rotate the miter gauge body to the desired angle, and tighten the lock knob (3).

REPLACING SANDING BELT (FIG. S, T, U)

WARNING

To avoid injury, turn the switch OFF and disconnect the plug from the power source before removing and installing sanding belts.

1. Remove two screws (1), and dust chute (2).
2. Remove hex bolt (3), and backstop (4).
3. Slide the tension lever (5), to the right to release the tension on the sanding belt (6) (Fig. U).
4. Remove the sanding belt from both sanding drums (7).
5. Slide the new sanding belt over the sanding drums, making sure the belt arrow located on the inside of the belt will run in the direction of the arrow on the sander. Slide tension lever (5), to the left to apply belt tension.
6. Quickly push the belt forward by hand (in the direction of the belt rotation arrow, visible from the top between the sanding disc and the belt arm) and check to see if the sanding belt tends to run to one side or the other on the two pulleys.
7. If the sanding belt runs toward the disc, slightly turn the tracking knob (8) counterclockwise.
8. If the sanding belt runs away from the disc, slightly turn the tracking knob (8) clockwise.
9. Plug the sander into the power source turn the switch ON and OFF quickly, and check to see if the sanding belt runs to either side. Readjust and fine-tune the tracking knob if necessary.
10. When proper tracking is achieved, replace the backstop and dust guard.

CHANGING POSITION OF SANDING ARM SANDING ARM IN VERTICAL POSITION (FIG. V)

1. The sanding arm can be used in either the horizontal or vertical position. To move the sanding arm, loosen the two bolts (1), that attach arm (2). Move the arm to the desired position. Tighten the two bolts.
2. Insert the table support rod (3) into the auxiliary hole as shown. The table support rod should extend 5″ outside the base.
3. Align round on the support rod with the hex bolt on the sander and tighten the hex bolt (4) on the sander.
4. Slide table assembly (5) onto rod (3), as shown.

• Align flat on support rod with hex bolt (6) on table bracket and tighten the bolt.

WARNING

• To avoid trapping the workpiece or fingers between the table and the sanding belt, the table edge should be positioned a maximum of 1/16″ from the sanding belt.

ADJUSTING SANDING ARM LEVELING THE ARM (FIG. W)

A positive stop is provided to position the sanding arm level with the workbench when the arm is in the horizontal position.

1. Place the sanding arm (1) in the horizontal position.
2. Place a level (2) on the sanding belt and check to see if the arm is level.
3. If an adjustment is necessary, loosen lock nut (3), and turn the sanding arm stop (4) clockwise to raise, or counterclockwise to lower, until the sanding arm is level. Then tighten lock nut (3).

OPERATION

• The belt and disc sander are designed to perform rough sanding operations on surface, edge grain, and end grain sanding.
• The sander will also perform freehand forming and contouring operations.
• The following suggestions are recommended for best results and safest use.

1. Always apply light pressure allowing the abrasive to remove the material slowly.
2. The workpiece should be moved, continuously, to avoid burning.
3. Avoid sanding small pieces of wood which will position the fingers close to the abrasive belt or disc.

• USING BACKSTOP WITH SANDING ARM (FIG. X) When using the sanding arm in the horizontal position, to perform surface or edge sanding, the backstop (1) must always be used. Always hold the workpiece (2) firmly keeping your fingers away from the sanding belt (3).
• Always keep the end of the workpiece against the backstop and move the work evenly across the sanding belt. Apply only enough pressure to allow the sanding belt to remove material. Use extra caution when sanding very thin pieces.

WARNING

The edge of the backstop must be positioned a maximum of 1/16″ from the sanding belt to avoid trapping the work or fingers between the backstop and the sanding belt.

SANDING INSIDE CURVES (FIG. Y)

• Freehand sanding of inside curves can be sanded on the idler drum (1). Never attempt to sand the ends of a workpiece on the drive drum.

WARNING

• To avoid injury, do not apply the end of the workpiece to the idler drum. This could cause the workpiece to fly up or cause kickback.

SANDING OUTSIDE CURVES (FIG. Z)

• Freehand sanding of outside curves should be done on the sanding disc (1). Keep fingers a minimum of 1 inch irom the disc.

WARNING

• Always sand on the left (downward) side of the sanding disc, as shown. Sanding on the right (upward) side of the sanding disc could cause the workpiece to fly up which could be hazardous.

WARNING

• The edge of the table must be positioned a maximum of 1/16″ from the sanding disc to avoid trapping the workpiece or fingers between the table and the sanding disc.

END GRAIN SANDING WITH THE BELT (FIG. AA)

• When sanding the ends of the wide workpieces it is more convenient to use the sanding belt (1) with the sanding arm in the vertical position and the table assembly (2) moved to the sanding belt, as shown.
• See the section titled CHANGING POSITION OF SANDING ARM.
• For more accurate work use the miter gauge and move the workpiece evenly across the sanding belt.
• IMPORTANT: Use a combination square to position the miter gauge perpendicular to the face of the disc.
• If it is not square loosen the miter gauge knob and move the miter gauge, slightly, until it is square.

WARNING

• For your safety, turn switch OFF and remove the plug from the power source outlet during assembly or while making adjustments to the belt/disc sander.

WARNING

• The edge of the table must be positioned a maximum of 1/16″ from the sanding belt to avoid trapping the workpiece or fingers between the table and the sanding belt.

MAINTENANCE

WARNING

For your safety, turn the switch OFF and remove plug from the power source outlet before maintaining, or lubricating your belt/disc sander.

1. Frequently blow out or vacuum out any dust that may accumulate inside the motor.
2. Remove impacted sawdust from the disc and belt abrasive or replace the abrasive.

WARNING

• Certain cleaning agents and solvents damage plastic parts.
• Some of these are gasoline, carbon tetrachloride, chlorinated cleaning solvents, ammonia, and household detergents that contain ammonia.
• Avoiding the use of these and other types of cleaning agents minimizes the probability of damage.

WARNING

• To avoid shock or fire hazards, if the power cord is worn cut, or damaged in any way, have it replaced immediately.

WARNING

• All repairs, electrical or mechanical, should be attempted only by trained repairmen. Contact the nearest Sears Service Center.

LUBRICATION

• All of the BALL BEARINGS are packed with grease at the factory. They require no further lubrication.

TROUBLESHOOTING

WARNING

• Turn the switch OFF and always remove the plug from the power source before making any adjustments or repairs.

WARNING

• All repairs, electrical or mechanical, should be attempted only by qualified service technicians.
• Contact the nearest Sears Service Center.

PARTS

4″ x 36″ BELT /DISC SANDER MODEL NO. 137.283290

WARNING

• When servicing use only CRAFTSMAN replacement parts. Use of any other parts may create a HAZARD or cause product damage.

WARNING

• Any attempt to repair or replace electrical parts on this belt/disc sander may create a HAZARD unless repair is done by a qualified service technician.
• Repair service is available at your nearest Sears Service Center.
• Always order by PART NUMBER, not by key number

References

• Manual-Hub.com – Free PDF manuals!

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