Craftsman 351.214300 - Manual (Page 12)

TROUBLESHOOTING
SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION
Excessive blade breakage 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. Cracking at weld
1. Squarely place work on table
2 . Check Blade Speed (page 7)
3. Use finer pitch blade
4. Tension blade properly; see “Operation”
5. Place blade in contact with work after saw is
started and has reached full speed
6 . Adjust wheel alignment properly
7. Adjust blade guides properly
8 . Use thinner blade
9. Replace blade
Premature blade dulling 1. Blade too coarse
2. Excessive blade speed
3. Inadequate feed pressure
4. Hard spots or scale in or on
material
5. Work hardening of workpiece
6 . Blade installed backwards
7. Insufficient blade tension
1. Use finer tooth blade
2. Try lower speed
3. Gently increase pressure
4. Reduce speed; increase rate of feed for
scale and change blades for hard spots
5. Increase rate of feed
6 . Remove blade, twist inside out and reinstall
blade
7. Tension blade properly; see “Operation”
Crooked cuts 1. Work not square
2. Rate of feed too great
3. Blade guides not adjusted properly
4. Insufficient blade tension
5. Upper blade guide too far
from workpiece
6 . Dull blade
7. Incorrect speed
8 . Blade guide assembly loose or
blade thrust bearing loose
1. Use rip fence; adjust tilt of table at 90° to
blade
2. Reduce rate of feed
3. Move both guide blocks within 0.002" from
blade (use gauge)
4. Tension blade properly; see “Operation”
5. Adjust upper guide to just clear workpiece
by V a "
6 . Replace blade
7. Check Blade Speed; see page 7 for
recommended speeds
8 . Tighten blade thrust bearing within 0.002"
behind blade back
Rough cuts 1 . Too much speed or feed
2. Blade too coarse
1 . Reduce speed or feed
2. Replace with finer blade
Blade is twisting or unusual
wear on side/back of blade
1 . Cut is binding blade
2. Blade guides or bearing worn
3. Blade guides or bearings not
adjusted properly
4. Blade guide brackets loose
1 . Decrease feed pressure
2. Replace
3. Adjust blade guides; see “Operation”
4. Tighten properly
Teeth ripping from blade 1. Teeth too coarse for work
2 . Rate of feed too great
3. Vibrating workpiece
4. Teeth filling with material
1. Use blade with finer teeth
2 . Decrease feed rate
3. Hold workpiece firmly
4. Use blade with coarser teeth
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