Craftsman 137.21239 manual

1 Operator’s Manual 12 in. SLIDING COMPOUND MITER SAW WITH LASER TRAC ® Model No. 137.212390 CAUTION: Before using this Miter Saw, read this manual and follow all its Safety Rules and Operating Instructions ϥ Safety Instructions ϥ Installation ϥ Operation ϥ Maintenance ϥ Parts List Sears, Roebuck and Co., Hoffman Estates, lL 60179 USA Visit[...]

2 TABLE OF CONTENTS SECTION PAGE Warranty ............................................................................................... 2 Product Specifi cations .......................................................................... 3 Symbols................................................................................................. 4 P[...]

3 WARRANTY PRODUCT SPECIFICATIONS MOTOR Power Source ............................................................. 120V AC, 60Hz, 15 Amp Speed ......................................................................... 4200 RPM (No load) Brake .......................................................................... Electric Double Insulated........[...]

4 WARNING ICONS Your power tool and its Owner’s Manual may contain “WARNING ICONS” (a picture symbol intended to alert you to, and/or instruct you how to avoid, a potentially hazardous condition). Understanding and heeding these symbols will help you operate your tool better and safer. Shown below are some of the symbols you may see. SAFETY A[...]

5 POWER TOOL SAFETY GENERAL SAFETY INSTRUCTIONS BEFORE USING THIS POWER TOOL Safety is a combination of common sense, staying alert and knowing how to use your power tool. CAUTION To avoid mistakes that could cause serious injury, do not plug the tool in until you have read and understood the following. 1. READ and become familiar with the entire O[...]

6 12. ALWAYS WEAR EYE PROTECTION . Any power tool can throw foreign objects into the eyes and 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 : Glas[...]

7 22. MAINTAIN TOOLS WITH CARE . Keep tools sharp and clean for best and safest performance. Follow instructions for lubricating and changing accessories. 23. WARNING : Dust generated from certain materials can be hazardous to your health. Always operate saw in well-ventilated area and provide for proper dust removal. 24. People with electronic dev[...]

8 SPECIFIC SAFETY INSTRUCTIONS FOR THIS COMPOUND MITER SAW 1. DO NOT operate the miter saw until it is completely assembled and installed according to these instructions. 2. IF YOU ARE NOT thoroughly familiar with the operation of miter saws, seek guidance from your supervisor, instructor or other qualifi ed person. 3. ALWAYS hold the work fi rml[...]

9 21. NEVER cut small pieces. If the workpiece being cut would cause your hand or fi ngers to be within 8-3/4 in. of the saw blade the workpiece is too small. 22. PROVIDE adequate support to the sides of the saw table for long work pieces. 23. NEVER use the miter saw in an area with fl ammable liquids or gases. 24. NEVER use solvents to clean pla[...]

10 ELECTRICAL REQUIREMENTS – cont’d DOUBLE INSULATED The power tool is double insulated to provide a double thickness of insulation between you and tool’s electrical system. All exposed metal parts are isolated from the internal metal motor components with protecting insulation. Replacement parts – When servicing, use only identical replace[...]

11 ELECTRICAL REQUIREMENTS AND SAFETY too rapidly or make too many start/stops in a short time. b. LINE VOLTAGE is more than 10% above or below the nameplate voltage rating. For heavy loads, the voltage at motor terminals must equal the voltage specifi ed on the nameplate. c. IMPROPER or dull saw blades are used. 5. Most motor troubles may be trac[...]

12 RECOMMENDED ACCESSORIES ● Use only accessories recommended for this miter saw. Follow instructions that accompany accessories. Use of improper accessories may cause hazards. ● The use of any cutting tool except 12 in. saw blades which meet the requirements under recommended accessories is prohibited. Do not use accessories such as shaper cut[...]

13 COMBINATION SQUARE MUST BE TRUE Should not gap or overlap when square is fl ipped over (see dotted fi gure). Should not gap or overlap when square fl ipped over (see dotted fi gure). Draw light line on board along this edge. Straight edge or a 3/4 in. board, this edge must be perfectly straight. Phillips Screwdriver Blade Wrench Adjustable W[...]

14 UNPACKING YOUR MITER SAW To avoid injury from unexpected starting or electrical shock, do not plug the power cord into a source of power during unpacking and assembly. This cord must remain unplugged whenever you are working on the saw. 1. Remove the miter saw from the carton. IMPORTANT: Do not lift miter saw by the trigger switch handle. It may[...]

15 Slide Carriage Lock Knob Right Extension Table Extension Table Lock Knob Stop Plate Positive Miter Detents Motor ON/OFF Trigger Switch Laser ON/OFF Switch Carrying Handle Stop Latch Knob Lower Blade Guard Blade Miter Handle Base Table Left Table Extension Mounting Hole Sliding Fence Hold-down Clamp Bevel Detent Pin Carrying Handle Dust Bag Switc[...]

16 AMPERAGE (AMPS) – A measure of the fl ow of electric current. Higher ratings generally means the tool is suited for heavier use. ARBOR LOCK – Allows the user to keep the blade from rotating while tightening or loosening the arbor bolt during blade replacement or removal. BASE – Supports the table, holds accessories and allows for workbenc[...]

17 POSITIVE STOP LOCKING LEVER – Locks the miter saw at a preset positive stop for the desired miter angle. SWITCH HANDLE – The switch handle contains the trigger switch and safety lock-off button. The blade is lowered into the workpiece by pushing down on the handle. The saw will return to its upright position when the handle is released. WARN[...]

18 ASSEMBLY AND ADJUSTMENTS Estimated Assembly Time: 5 – 10 minutes To avoid injury, do not connect this miter saw to the power source until it is completely assembled and adjusted and you have read and understood this Operator’s Manual. INSTALLING THE MITER HANDLE (FIG. A) 1. Thread the miter handle (1) into the hole located at the front of th[...]

19 Locking When transporting or storing the miter saw, the cutting head should always be locked in the down position. 1. Push the cutting head down to its lowest position. 2. Push the stop latch knob (2) into the locking hole. IMPORTANT: To avoid damage, never carry the miter saw by the switch handle, the cutting arm or the miter handle. ALWAYS use[...]

20 1. Loosen the miter handle (1). Lift up the positive stop locking lever (2) and position the table to left 15 0 . Release the positive stop locking lever and lock the miter handle. 2. The sliding fence (3) must be extended to the left. 3. To remove, loosen and remove the six screws (4) on the table inserts (5) with a Phillips screwdriver and rem[...]

21 4. While holding the lower blade guard, loosen the cover plate screw (2) with a Phillips screwdriver. (Fig. K) 5. Rotate the cover plate (3) to expose the arbor bolt (4). (Fig. K) 6. Place the blade end wrench over the arbor bolt. Fig. K 7. Locate the arbor lock (5) on the motor. (Fig. L) 8. Press the arbor lock, holding it in fi rmly while tur[...]

22 WARNING ! NOTE: Pay attention to the pieces removed, noting their position and direction they face. Wipe the blade collars clean of any sawdust before installing a new blade. Also, the 12 in. blade has a 1 in. arbor hole with a 5/8 in. reducer (8) to mount onto the saw. Fig. M INSTALLING BLADE (FIG. K, L, M) Un-plug the miter saw before changing[...]

23 THE LASER BEAM For your own safety, never connect the plug to power source outlet until all the adjustment steps are complete and you have read and understood the safety and operational instructions. Your tool is equipped with the Laser Trac ® cutting guide using Class II laser beam. The laser beam will enable to preview the saw blade path on t[...]

24 90° Bevel Pointer Adjustment (Fig. O) 1. When the blade is exactly 90 o (0 o ) to the table, loosen the bevel indicator screw (5) using a # 2 Phillips screwdriver. 2. Adjust bevel indicator (6) to the “0” mark on the bevel scale and retighten the screw. Fig. O 45 o Bevel Adjustment (Fig. P) 1. Loosen the bevel lock handle (7) and tilt the c[...]

25 Fig. P 33.9° Bevel Adjustment (Fig. P) 1. Push the bevel detent pin (10) in toward the front of the unit. 2. Unlock the bevel lock handle and tilt the cutting arm to the crown molding positive stop at 33.9 o . 3. Using a combination square, check to see if the blade angle is 33.9 o to the table. 4. If the blade is not at 33.9 o to the miter tab[...]

26 2. While holding the upper arm in that position, turn the stop knob (1) until it touches the stop plate (2). 3. Recheck the blade depth by moving the cutting head front to back through the full motion of a typical cut along the control arm. Fig. S ADJUSTING CUTTING DEPTH (FIG. S) The maximum depth travel of the cutting head was set at the factor[...]

27 SLIDING THE REAR EXTENSION SUPPORT BAR (FIG. T) To avoid possible personal injury or damage to the miter saw due to tipping, do not operate the saw without the Rear Extension Support Bar. Loosen the two screws (1) and extend the rear extension support bar (2) by sliding it out to match position, tighten the two screws. Fig. T WARNING ! 1 2[...]

28 SAFETY INSTRUCTIONS FOR BASIC SAW OPERATION BEFORE USING THE MITER SAW To avoid mistakes that could cause serious, permanent injury, do not plug the tool in until the following steps are completed: ● Completely assemble and adjust the saw, following the instructions. (ASSEMBLY AND ADJUSTMENTS) ● Learn the use and function of the ON/OFF switc[...]

29 OPERATION ● Remove adjusting wrench from the tool before turning it on. ● To avoid injury from jams, slips, or thrown pieces, use only recommended accessories. RECOMMENDED ACCESSORIES ● Consult the ACCESSORIES and ATTACHMENTS section of this Operators Manual for recommended accessories. Follow the instructions that come with the accessory.[...]

30 OPERATION DRESS FOR SAFETY Any power tool can throw foreign objects into the eyes. This can result in permanent eye damage. Everyday eyeglasses have only impact resistant lenses and are not safety glasses. Glasses or goggles not in compliance with ANSI Z87.1 could seriously injure you when they break. ● Do not wear loose clothing, gloves, neck[...]

31 ● Do not use this saw to cut small pieces. If the workpiece being cut would cause your hand or fi ngers to be within 8-3/4 inches of the saw blade the workpiece is too small. Keep hands and fi ngers out of the “no hands zone” area marked on the saws table. ● When cutting odd shaped workpieces, plan your work so it will not bind in the [...]

32 Before freeing jammed material: ● Release trigger switch. ● Wait for all moving parts to stop. ● Unplug the miter saw. Fig. U BASIC SAW OPERATIONS For your convenience, your saw has a blade brake. The brake is not a safety device. Never rely on it to replace the proper use of the guard on your saw. If the blade doesn’t stop within approx[...]

33 The miter saw is equipped with an automatic blade brake. When the trigger switch is released, the electric blade brake will stop the blade within approximately 10 seconds. Fig. V SLIDING FENCE & REMOVE SLIDING FENCE (FIG. W) Sliding Fence The sliding fence must be extended to the left when making bevel cuts. The sliding fences note three bev[...]

34 BEFORE LEAVING THE SAW ● Never leave tool running unattended. Turn power OFF. Wait for all moving parts to stop. ● Make workshop childproof. Lock the shop. Disconnect master switches. Store tool away from children and other unqualifi ed users. To avoid injury from materials being thrown, always unplug the saw to avoid accidental starting, a[...]

35 Fig. Z NOTE: The saw comes with a 33.9° crown molding stop. 33.9° BEVEL STOP FOR CROWN MOLDING (FIG. AA) 1. Push the bevel detent stop pin (2) in toward the front of the machine. 2. Loosen the bevel lock handle (1). 3. Rotate the cutting head until the bevel detent pin stops the bevel angle at 33.9° on the bevel scale. 4. Tighten the bevel lo[...]

36 one stop plate at a time. Loosen the locking screw (6), rotate the stop plate (7) to vertical position and retighten the locking bolt. Fig. DD CUTTING BOWED MATERIAL (FIG. EE) A bowed workpiece must be positioned against the fence and secured with a clamping devise before cutting as shown. Do not position workpiece incorrectly or try to cut the [...]

37 CUTTING BASE MOLDING (FIG. GG) Base moldings and many other moldings can be cut on a compound miter saw. The setup of the saw depends on molding characteristics and application, as shown. Perform practice cuts on scrap material to achieve best results: 1. Always make sure moldings rest fi rmly against fence and table. Use hold-down, crown moldi[...]

38 CUTTING CROWN MOLDING (FIG. HH, II) Your compound miter saw is suited for the diffi cult task of cutting crown molding. To fi t properly, crown molding must be compound-mitered with extreme accuracy. The two surfaces on a piece of crown molding that fi t fl at against the ceiling and wall are at angles that, when added together, equal exactl[...]

39 CROWN MOLDING CHART Compound Miter saw Miter and bevel Angle settings Wall to Crown Molding Angle 52/38° Crown Molding 45/45° Crown Molding Angle Between Walls Miter Setting Bevel Setting Miter Setting Bevel Setting 67 42.93 41.08 46.89 36.13 68 42.39 40.79 46.35 35.89 69 41.85 40.50 45.81 35.64 70 41.32 40.20 45.28 35.40 71 40.79 39.90 44.75 [...]

40 MAINTENANCE Never put lubricants on the blade while it is spinning. ● To avoid fi re or toxic reaction, never use gasoline, naphtha acetone, lacquer thinner or similar highly volatile solvents to clean the miter saw. ● To avoid injury from unexpected starting or electrical shock, unplug the power cord before working on the saw. ● For your[...]

41 SAWDUST Periodically, sawdust will accumulate under the worktable and base. This could cause diffi culty in the movement of the worktable when setting up a miter cut. Frequently blow out or vacuum up the sawdust. If blowing sawdust, wear proper eye protection to keep debris from blowing into eyes. LUBRICATION (FIG. KK) All the motor bearings in[...]

42 To avoid injury from accidental starting, always turn switch OFF and unplug the tool before moving, replacing the blade or making adjustments. TROUBLESHOOTING GUIDE - MOTOR PROBLEM PROBLEM CAUSE SUGGESTED CORRECTIVE ACTION Brake does not stop blade within 10 seconds. 1. Motor brushes not sealed or lightly sticking. 2. Motor brake overheated from[...]

43 TROUBLESHOOTING GUIDE TROUBLESHOOTING GUIDE - SAW OPERATION PROBLEM PROBLEM CAUSE SUGGESTED CORRECTIVE ACTION Blade hits table. 1. Misalignment. 1. See ADJUSTMENT - Setting Cutting Depth section. Angle of cut not accurate. Can not adjust miter. 1. Miter table unlocked. 2. Sawdust under table. 1. See OPERATION - Miter Angle Adjustment section. 2.[...]

44 PARTS LIST 12 in. COMPOUND MITER SAW MODEL NO. 137.212390 When servicing use only CRAFTSMAN replacement parts. Use of any other parts many create a HAZARD or cause product damage. Any attempt to repair or replace electrical parts on this Miter Saw may create a HAZARD unless repair is done by a qualifi ed service technician. Repair service is av[...]

45 12 in. COMPOUND MITER SAW MODEL NO. 137.212390 SCHEMATIC A[...]

46 12 in. COMPOUND MITER SAW MODEL NO. 137.212390 PARTS LIST FOR SAW SCHEMATIC B I.D. Description Size QTY 0DTH CENTER BOLT 1 0H9A REAR EXTENTION STAY 1 0J6A FLAT WASHER φ8*16-2.5 1 0J74 FLAT WASHER 1/4*5/8-3/32 6 0JAZ WAVE WASHER WW-6 2 0JPF HEX. HD. BOLT M6*1.0-25 3 0JXB HEX. SOC. SET SCREW M6*1.0-16 1 0JXG HEX. SOC. SET SCREW M8*1.25-16 1 0K2B [...]

47 12 in. COMPOUND MITER SAW MODEL NO. 137.212390 SCHEMATIC B OP ERA T O R ’ S MA N UAL[...]

48 12 in. COMPOUND MITER SAW MODEL NO. 137.212390 PARTS LIST FOR MOTOR I.D. Description Size QTY 0JCF SPRING PIN φ4-30 1 0JX2 HEX. SOC SET SCREW M5*0.8-6 2 0K44 CR. RE. PAN HD. SCREW & WASHER M5*0.8-12 3 0KCP CR. RE. PAN HEAD TAPPING & WASHER SCREW M5*12-60 2 0KLA PLASTIC SCREW M5*0.8-6 2 0Q9K FLOW GUIDE 1 0QGR COMPRESSION SPRING 1 0QMK RU[...]

49 NOTE[...]

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