21
TROUBLESHOOTING GUIDE
SUGGESTED CORRECTIVE ACTION
1. Inspect/clean/replace brushes.
See MAINTENANCE section.
2. Use a recommended blade. Let cool down. See
REMOVING OR INSTALLING THE BLADE section.
3. Retighten. See REMOVING OR
INSTALLING THE BLADE section.
4. Replace brushes.
5. Contact Knova Service Centre.
1. Replace limit switch.
2. Replace brushes. See MAINTENANCE section.
3. Verify there is electrical power at the outlet.
1. Replace Brushes. See MAINTENANCE section.
2. Contact Knova Service Centre.
PROBLEM
Brake does
not stop the
blade within
7 seconds.
Motor does
not start.
Brush spark
when switch
released.
PROBLEM CAUSE
1. Motor brushes not sealed or lightly sticking.
2. Motor brake overheated from use of defective
or wrong size blade or rapid ON/OFF cycling.
3. Arbor bolt loose.
4. Brushes cracked, damaged, etc.
5. Other.
1. Limit switch failure.
2. Brush worn.
3. Fuse blown or circuit breaker tripped
on home panel.
1. Brush worn.
2. Other.
To avoid injury from accidental starting, always turn switch OFF and unplug the tool before
moving, replacing the blade or making adjustments.
WARNING
TROUBLESHOOTING GUIDE - MOTOR
SUGGESTED CORRECTIVE ACTION
1. See ADJUSTMENT - Cutting Head
Downward Travel Adjustment section.
1. See OPERATION
- Miter Angle Adjustment section.
2. Vacuum or blow out dust. WEAR EYE PROTECTION.
1. Contact Knova Service Centre.
1. Loosen pivot bolt lock nut
(see adjustment section).
2. Contact Knova Service Centre.
3. Clean and lubricate moving parts.
1. See BASIC SAW OPERATION section.
2. Replace or sharpen blade.
3. Replace with 10 in. diameter blade.
4. Use hold-down clamp to secure workpiece to table.
1. Replace blade.
2. Tighten arbor bolt.
PROBLEM
Blade hits
table.
Angle of cut
not accurate.
Can not adjust
miter.
Cutting arm
wobbles.
Cutting arm
will not fully
raise, or blade
guard won’t
fully close.
Blade binds,
jams, burns
wood.
Saw vibrates
or shakes.
PROBLEM CAUSE
1. Misalignment.
1. Miter table unlocked.
2. Sawdust under table.
1. Loose pivot points.
1. Pivot bolt too tight.
2. Pivot spring not replaced
properly after service.
3. Sawdust build-up.
1. Improper operation.
2. Dull or warped blade.
3. Improper blade size.
4. Wood is moving during cut.
1. Saw blade not round / damaged / loose.
2. Arbor bolt loose.
TROUBLESHOOTING GUIDE - SAW OPERATION
SUGGESTED CORRECTIVE ACTION
1. Replace with new AAA batteries.
2. Reload the batteries and make certain that they
make solid contact to the battery spring.
PROBLEM
The laser
guide fails
to turn on.
PROBLEM CAUSE
1. The batteries are dead.
2. The battery contacts need adjustment.
TROUBLESHOOTING GUIDE - LASER GUIDE
Summary of Contents for KN M-2508RC
Page 52: ...www knova com mx...
