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Craftsman 351.21 4300 manual

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  • Page 1

    Operator's Manual CRAFTSMAN ++ _ PROFESSI ONAL_ 1 8" Metal Cutting BAND SAW WITH WELDER Model No. 351.21 4300 CAUTION: Read and follow all Safety Rules and Operating Instructions before First Use of this Product. Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A. www.sears.com/craftsman 25173.01 Draft (05/21/07)[...]

  • Page 2

    Warranty .................................... 2 Safety Rules ............................... 2-3 Unpacking .................................. 3 Assembly ................................... 3 Installation ................................. 3-5 Operation ................................ 5-11 Maintenance ................................ 11 Troubleshoot[...]

  • Page 3

    • Avoid accidental start-up. Make sure that the tool is in the "off" position before plugging in. • Do not force tool. It will work most efficiently at the rate for which it was designed. • Keep hands away from moving parts and cutting surfaces. • Never leave tool running unattended. Turn the power off and do not leave tool until [...]

  • Page 4

    POWER SOURCE Band saw requires a 115 or 230 volt, 60 Hz power source. Band saw is shipped with motor and controls prewired for 115 volt operation. Line cord does not have plug. A 115 volt, 20/30A three-prong plug must be attached to the line cord. The motor is designed for operation on the voltage and frequency specified. Normal loads will be handl[...]

  • Page 5

    Rewire saw motor to 230 volts (See Figure 3). 115V 230V Figure 3 - Saw Motor Wiring Diagram • Remove pan head screws from welder cover (Figure 14, Key No. 1) tilt welder outwards. • Rewire welding transformer to 230 volts (See Figure 4). R N C v 35V 1 V V 230V 115V N R C 35V 115V V 2 V 230V Figure 4 - Welder Transformer Wiring Diagram • Rewir[...]

  • Page 6

    SPECIFICATIONS Depth of throat ............................. 18" Maximum depth of cut ...................... 10s/4 '' Table size ........................... 23% x 21%" Table tilt ............................ -15 to +15 ° Wheel diameter ............................ 18" Blade length .............................. 140" B[...]

  • Page 7

    TENSIONING BLADE Refer to Figure 15. • Tension blade by rotating handwheel (Key No. 38). Be sure blade guides do not interfere with blade path. • Tighten blade until it is properly tensioned. • A properly tensioned blade will ring slightly when back of blade is plucked (like a string on an instrument). NOTE: Check tension of new blade. Additi[...]

  • Page 8

    MATERIAL High carbon steel Free cutting steel Ferro-manganese Ferro-nickel Ferro-nickel-chrome Ferro-molybdenum Ferro-chrome (med.) Ferro-chrome (high) Manganese steel Ferro-tungsten Ferro-chrome-vanadium Ferro-silicon-manganese Machinery steel Ordinary tool steel High speed steel Stainless steel Thick ironplate Cast iron Nickel castiron Forgeable [...]

  • Page 9

    ADJUSTING TABLE ANGLE Refer to Figure 16. Angle cuts can be made by tilting table left to right. Loosen socket head bolts (Key No. 12) to tilt table up to 15 ° right or left. Use angle scale to set table angle (Key No. 18). TYPE OF CUT • Band saw can be used to perform a variety of cuts. Cutting procedure used depends on size and desired shape o[...]

  • Page 10

    Incorrect - Blades Clamped At Angle Incorrect - Blades Not Ground Square Incorrect - Blades Overlap Correct - Grind Blades Square and Clamp Straight Correct - Clamp Blades Flat with no Overlap Figure 10 - Blade Mounting and Clamping TOOTH SPACING Refer to Figure 11. • Approximately 1/8" of blade will be consumed during the welding process. T[...]

  • Page 11

    Heat build-up in the tool can cause serious damage to the tool. Allow transformer to cool down to room temperature between each welding or each anneal- ing operation. It is a safe procedure to let the trans- former be idle for at least 3 minutes between successive welding/annealing operations. BLADE ANNEALING • After the blade has been welded, th[...]

  • Page 12

    SYMPTOM Excessive blade breakage Premature blade dulling Crooked cuts POSSIBLE CAUSE(S) 1. Material not secure on table 2. Incorrect speed or feed 3. Blade too coarse for material 4. Incorrect blade tension 5. Teeth in contact with work before sawing 6. Blade rubs on wheel flange 7. Misaligned guides 8. Blade too thick for wheel diameter 9. Crackin[...]

  • Page 13

    SYMPTOM Motor running too hot Saw will not start POSSIBLE CAUSE(S) 1. Blade tension too great 2. Blade too coarse for work (typical when cutting pipe) 3. Blade too fine for work (typical when cutting slick or soft material) 4. Excessive dirt and chips 1, 2. 3. 4, 5. Speed difficult adjust 1. 2. Blade does not heat up when weld button is pressed Mis[...]

  • Page 14

    Model 351.21 4300 Figure 13 - Replacement Parts Illustration for Switch, Shear and Deflector 39 29 28 26 38 8_ 4 13 20 14 46 ? 37 29 1 26 2i 30 31 "30 14[...]

  • Page 15

    KEY NO. PART NO. 1 20258.00 2 18637.00 3 17737.00 4 17738.00 5 STD863408 6 15561.00 7 STD863508 8 17739.00 9 16934.00 10 16935.00 11 17740.00 12 04493.00 13 18638.00 14 16760.00 15 16761.00 16 17400.00 17 17401.00 18 18006.00 19 17501.00 20 STD840409 21 05156.00 22 STD863635 23 20257.00 24 09845.00 DESCRIPTION Switch Plate Magnetic Starter Stop Swi[...]

  • Page 16

    Model 351.21 4300 Figure 14 - Replacement Parts Illustration for Welder 30 71 11 39 14 _25 44 52 54 6 47 49 26 , 63 _,_---- 53[...]

  • Page 17

    KEY NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2O 21 22 23 24 25 26 27 28 29 30 31 32 33 PART NO. 18640.00 20229.00 20230.00 STD851006 STD840610 20231.00 18641.00 05991.00 09845.00 09442.00 20232.00 01833.00 05790.00 STD852005 STD511002 05297.01 20234.00 00964.00 20235.00 05324.00 18642.00 04696.00 05318.00 05374.00 18643.00 18653.00 05330[...]

  • Page 18

    Model 351.21 4300 Figure 15 - Replacement Parts Illustration for Wheels and Speed Handle 9 8 5 2 3 4 ] 26 70, 36 J 61 62 29 30 "_33 o_ 64 45 44 22 t t 51 54 55 18[...]

  • Page 19

    KEY NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2O 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 PART NO. 01900.00 18660.00 STD315555 04790.00 18662.00 16949.00 16954.00 16955.00 STD852010 16943.00 16957.00 16948.00 16942.00 00088.00 16956.00 18663.00 17727.00 16946.00 16944.00 STD851010 STD852010 00964.00 00958.00 16951.00 STD851012 STD8[...]

  • Page 20

    Model 351.214300 Figure 16 - Replacement Parts Illustration for Table r,o o 38 37 23 _ 24 44:25 32 20 30 *'/28 20 21 46 10 5 26 6 11 9 4( 28 55 43 49 16 17 1 42 18[...]

  • Page 21

    KEY NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2O 21 22 23 24 25 26 27 28 PART NO. 17697.00 17698.00 17699.00 17700.00 01002.00 STD851010 STD852010 STD841015 STD836030 STD836045 17729.00 20028.00 STD851012 STD833012 17730.00 17731.00 01286.00 17732.00 17701.00 17702.00 17703.00 17704.00 17705.00 STD833025 STD851006 STD835030 STD852008 STD8[...]

  • Page 22

    Model 351.21 4300 Figure 17 - Replacement Parts Illustration for Motor and Blade Drive 34 57 9 10 11 44 43 33 32 22[...]

  • Page 23

    KEY NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2O 21 22 23 24 25 26 27 28 29 30 31 32 PART NO. 17716.00 16966.00 09849.00 15128.00 20069.00 20256.00 STD835020 20255.00 16968.00 17733.00 00256.00 16969.00 STD843015 16970.00 18667.00 STD836020 STD836045 STD852010 STD851010 STD835035 STD863508 00958.00 STD841217 03914.00 16972.00 STD836035 ST[...]

  • Page 24

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