English
TROUBLESHOOTING GUIDE
WARNING
•To avoid injury from an accidental start, turn the switch OFF and remove the plug from the power source before making any adjustments.
•All electrical or mechanical repairs should be done only by qualified service technicians. Contact Hitachi Authorized Service Center.
GENERAL
| PROBLEM | PROBABLE CAUSE | REMEDY | ||
| Blade does not run in the | 1. Not tracking properly. | 1. | Adjust tracking. See ASSEMBLY AND | |
| center of the upper wheel. |
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| ADJUSTMENTS section BLADE TRACKING. |
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| 2. | Defective blade. | 2. | Replace blade. |
| Band saw slows down | 1. Blade too loose. | 1. | Adjust blade tension. See SCHEMATIC A, | |
| when cutting. |
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| page 56. Adjust TENSION ROD, Ref. 0053, |
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| clockwise to increase tension; counterclockwise |
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| to decrease tension. |
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| 2. | Cutting too small a radius. | 2. | Stop feeding, back up the material slightly, |
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| until the band saw speeds up. |
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| 3. | Dull blade. | 3. | Replace blade. |
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| 4. | Overloading motor. | 4. | Slow down, trying to cut too fast. See MOTOR |
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| TROUBLESHOOTING GUIDE on page 19. |
| Blades braking. | 1. Too much tension on the blade. | 1. | Adjust blade tension. See SCHEMATIC A, | |
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| page 56. Adjust TENSION ROD, Ref. 0053, |
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| clockwise to increase tension; counterclockwise |
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| to decrease tension. |
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| 2. | Kink in the blade caused by cutting too | 2. | Use correct cutting technique. See OPERATION |
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| small a radius or turning the material |
| section GENERAL CUTTING. |
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| too fast when cutting. |
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| 3. | Cutting incorrect material. | 3. | See OPERATION section BLADE SELECTION. |
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| Crooked cuts. | 1. Work not square. | 1. | Use miter gauge; adjust tilt of head at 90°. | |
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| 2. | Rate of feed too great. | 2. | Reduce rate of feed. |
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| 3. | Blade guides not adjusted properly. | 3. | Move both guide blocks within .002″ from blade |
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| (use gauge). |
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| 4. | Upper blade guide too far from | 4. | Adjust upper guide to just clear workpiece by 1/8″. |
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| workpiece. |
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| 5. | Dull blade. | 5. | Replace blade. |
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| 6. | Blade guide assembly loose or | 6. | Tighten blade thrust bearing within 1/64″ |
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| blade thrust bearing loose. |
| behind blade back. |
| Rough cuts. | 1. Too much feed. | 1. | Reduce feed. | |
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| 2. | Blade too coarse. | 2. | Replace with finer blade. |
| Dust collection not working. | 1. Dust collection bag full. | 1. | Empty dust collection bag. | |
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| 2. | Impeller loose or broken. | 2. | Replace impeller. |
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