1.  Loss of Tension:

• Cause: Steel center has been overheating from rubbing the side of material being cut.
• Remedy: Make certain blade RPM is correct so the blade operates at its tensioned speed. Tune engine according to manufacturter's manial.
• Cause: Unequal pressure at blade clamping collars.
• Remedy: Blade clamping collars must be identical in diameter and the recommended size.
• Cause: Steel center has been overheating as a result of blade spinning on arbor.
• Remedy: Check water flow, distribution and lines. Tighten the blade shaft nut. Make certain the drive pins is functioning on concrete saws.

2.  Segment Loss:

• Cause: Improper blade tension.
• Remedy: Ensure blade is running at correct RPM. Blade is tensioned for correct RPM. Tune engine according to manufacturer's manual.
• Cause: Blade is cutting out round, causing a pounding motion.
• Remedy: Replace worn bearings, realign blade shaft or replace worn blade mounting arbor.
• Cause: Defective blade collars are causing blade misalignment.
• Remedy: Clean blade collars or replace if collars are under recommended diameter.
• Cause: Steel center is worn from undercutting.
• Remedy: Use sufficient water to flush out the cut.
• Cause: Blade is too hard for material being cut.
• Use proper blade specification for material being cut.
• Cause: Overheating due to lack of water.
• Remedy: Check water feed lines and make sure flow is adequate on both sides of blade.

3.  Segment Cracks:

• Cause: Blade being forced through the cut causing chattering.
• Remedy: Run saw at normal operating speed. Open blade by re-sharpening in a abrasive material.
• Cause: Blade is too hard for material being cut.
• Remedy: Use a blade with a softer bond.

4.  Blade Will Not Cut:

• Cause: Blade is too hard for material being cut.
• Remedy: Use a softer bond blade. Select proper blade specifiaction for material being cut.
• Cause: Dull Blade.
• Remedy: Re-sharpening blade by dressing segment on abrasive block.

5.  Arbor Hole Out of Round:

• Cause: Blade collar is not properly tightened, permitting blade rotation or vibration on the shaft.
• Remedy: Tighten the shaft nut with a wrench to make sure the blade is adequately secured.
• Cause: Blade collars are worn or dirty, not allowing proper blade clamping.
• Remedy: Clean blade collars, making sure they are not worn.
• Cause: Blade is not properly mounted.
• Remedy: make sure the blade is mounted on the proper shaft diameter before tightening shaft nut. Ensure the pin hole slides over drive pin. Make sure that drive pin is in pin hole.

6.  Uneven Segment Wear:

• Cause: Equipment defects cause the segment to wear unevenly.
• Remedy: Replace bad bearings, worn arbor shaft or misalignment to spindle. When using concrete saws, make sure the engine msut run smoothly to prevent harmonic vibration.
• Cause: Saw is misaligned.
• Remedy: Check saw head alignment for squareness both vertically and horizonyally.
• Cause: Insufficient water on both side of blade.
• Remedy: Flush out water system and check flow and distribution to both sides of blade.

7.  Undercutting Steel Center:

• Cause: Cutting through material into sub-base.
• Remedy: Wear retardant cores are not always the untimate solution to eliminating undercutting. Your best defense is to always provide an adequate water flow to the steel center area immediately adjacent to the segment. This is especially important when making deep cuts.
• Cause: Abrasion of steel center due to highly abrasive fines generated during cutting.
• Remedy: Use as much water as possible to flush out fines generated during cutting or use wear retardant cores.

8.  Cracks in Steel Core Slot:

• Cause: Blade specification is too hard for the material being cut.
• Remedy: Use a softer bond blade to eliminated stresses that cause cracks.
• Cause: Overheating due to lack of water.
• Remedy: Check water feed lined and make sure flow is adequate on both sides of blade.
• Cause: Blade flutters in cut as a result of blade losing tension.
• Remedy: Tighten the blade shaft nut. Make sure blade is running at proper tensioned speed and that drive pin is functioning properly.

9.  Blade Wobbles:

• Cause: Blade is bent as a result of dropping or being twisted in the cut during operation.
• Remedy: Blade should be returned to manufacturer to be re-tensioned and flattened.
• Cause: Blade runs at improper speed.
• Remedy: Check for bad bearings, belt shaft or worn mounting arbor. Speed pf the saw is either too fast or too slow for the size of the blade. RPM of the saw should be verified to the specific speeds established by the NASI Standards for minimum and maximum blade speeds.