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10

MAINTENANCE

CHANGING THE SAW BLADE

1. Remove the protective casing by unscrewing the six screws shown in 
Fig. K. 

2. Loosen the blade tension by turning the blade tension adjustment 
knob counterclockwise (Fig. L - 1).

3. Carefully remove the blade, first from the guides and then from 
around the cast iron pulleys. 

4. Insert the new blade, first between the guides and then around the 
cast iron pulleys.

5. Turn the blade tension adjustment knob to properly adjust the blade 
tension (Fig. L - 1).

6. Replace the protective casing using the six screws in Fig. K.

7. Reposition the blade guides into their correct position for the next cut.

GENERAL MACHINE CARE

• Routinely check the condition of the power supply cords and replace 
them if they are broken, worn or if internal wires are showing.

• Use a brush and a shop vacuum to remove chips and other debris from the machine.

• Always keep the machine hand grip clean to prevent accidental slipping during use.

• Remove the processing residues from the cutting area and the blade guides whenever necessary.

• If you do not intend to use the sawing machine for a long time, clean it and put it in a dry place if possible. In 
these cases, it is advisable to make sure the blade stays slack so that it is not kept under tension during storage for 
any reason.

• To ensure effective machine operation, check the condition of the blade daily. Sharpen it as necessary.

Fig. K

Fig. L

1

WARNING: 

Turn off the machine and disconnect the power supply

before conducting any maintenance work or adjusting any settings.

Summary of Contents for 3975

Page 1: ... will supply you years of rugged trouble free performance Pay close attention to the rules for safe operation warnings and cautions If you use your tool properly and for intended purpose you will enjoy years of safe reliable service IMPORTANT NEED HELP CONTACT US Have product questions Need technical support Please feel free to contact us at 800 232 1195 techsupport wenproducts com WENPRODUCTS COM...

Page 2: ...d View Parts List Warranty TECHNICAL DATA 3975 120 V 60 Hz 4 5A 400W S6 40 56 1 2 x 1 2 in 5 x 4 7 8 in 90 3 1 8 x 3 15 16 in 45 5 in diameter 90 3 1 8 in diameter 45 0 to 60 125 to 260 FPM 45 pounds 2 Operation Model Number Motor Saw Blade Cutting Capacity for Square Material Cutting Capacity for Circular Material Cutting Angle Adjustment Blade Speed Weight Troubleshooting Adjustments ...

Page 3: ...gloves neckties or jewelry rings watches etc when op erating the tool Inappropriate clothing and items can get caught in moving parts and draw you in ALWAYS wear non slip footwear and tie back long hair 8 WEAR A FACE MASK OR DUST MASK to fight the dust produced by sawing operations WARNING Dust generated from certain materials can be hazardous to your health Always operate the tool in a well venti...

Page 4: ... for safety Wear a face or dust mask when working in a dusty environ ment Use ear protection such as plugs or muffs during extended periods of operation GENERAL SAFETY RULES 1 To avoid injury from unexpected movement secure the machine to a bench before operating 2 The machine must be switched off before inserting materials to be cut in the vise or before removing materials from the vice after cut...

Page 5: ...ion is properly grounded If you are not sure have a licensed electrician check the outlet WARNING This tool is for indoor use only Do not expose to rain or use in damp locations Guidelines for using extension cords 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...

Page 6: ...low Do not discard the carton or any packaging until the band saw is completely assembled WARNING If any part is missing or damaged do not plug in the band saw until the missing or damaged part is replaced 2 3 1 4 Blade Tension Adjustment Knob Run Switch Vise Adjustment Rubber Feet Work Stop Angle Adjustment Lock Locking Pin Variable Speed Adjustment Knob Power Switch Blade Guide Lock A B C D E F ...

Page 7: ... nut to fix it 4 Attach the work stop Fig B 2 to the guide rail Fig B 3 Secure it in place by tightening the lock handle ASSEMBLY Fig A Fig B 1 3 2 ADJUSTMENTS POSITIONING THE WORK STOP If you have to make a series of cuts with a uniform length use the supplied work stop 1 Loosen the lock handle Fig C 1 2 Slide the work lock to the desired distance 3 Tighten the lock handle again WARNING Make sure...

Page 8: ...workpiece Without the adjustment the resulting cut could be unclean and jagged 1 Loosen the blade guide lock handle Fig E 1 2 Slide the blade guide to move it closer to the workpiece 3 Retighten the blade guide lock handle 1 CUTTING SPEED The cutting speed always depends on the material being cut To select the most suitable speed turn the control knob Fig F 1 to increase or decrease the speed with...

Page 9: ...e has come to full speed gradually lower the ma chine s body downwards until the blade comes into light contact with the workpiece Let the saw blade make a small groove along the workpiece to help ensure a straight cut particularly with curved or round workpieces 5 Once initial contact and a groove have been made apply a small amount of additional pressure to continue the cut OPERATION 1 Fig G Fig...

Page 10: ...the condition of the power supply cords and replace them if they are broken worn or if internal wires are showing Use a brush and a shop vacuum to remove chips and other debris from the machine Always keep the machine hand grip clean to prevent accidental slipping during use Remove the processing residues from the cutting area and the blade guides whenever necessary If you do not intend to use the...

Page 11: ...rect cutting speed in rela tion to work piece 5 The workpiece is wrongly posi tioned in the vise 6 Poor blade tension 1 Decrease the cutting pressure 2 Choose the proper blade for the given workpiece 3 Check the blade guide adjust ment 4 Adjust to the correct cutting speed 5 Check workpiece positioning and clamping in the vise 6 Check the blade tension The blade tends to protrude from the guide 1 ...

Page 12: ...12 EXPLODED VIEW AND PARTS LIST ...

Page 13: ...5 117 Foot 4 118 3975 118 Carriage bolt 1 119 3975 119 Flat washer 1 120 3975 120 Nut 1 121 3975 121 Vise base 1 122 3975 122 Flat head screw 2 123 3975 123 Vise jaw 1 124 3975 124 Sliding case 1 125 3975 125 Retaining ring 1 126 3975 126 Screw 1 127 3975 127 Spring pin 1 128 3975 128 Bushing 1 129 3975 129 Handle cap 2 130 3975 130 Socket rod 1 131 3975 131 Handle rod 1 132 3975 132 Set screw 1 1...

Page 14: ... prepaid by the purchaser The prod uct must be shipped in its original container or an equivalent properly packed to withstand the hazards of ship ment The product must be fully insured with a copy of the warranty card and or the proof of purchase enclosed There must also be a description of the problem in order to help our repairs department diagnose and fix the issue Repairs will be made and the...

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