John Deere ET-3410-J - Manual (Page 22)

22 Metal Cutting Saw Operator's Manual
Troubleshooting
TROUBLESHOOTING:
Low Blade Life/Teeth Chipping:
- Wrong blade for the type of material.
a. AT-4423-J for mild steel up to 5/16" solid.
b. AT-4424-J for aluminum up to 3/8" solid.
c. AT-4425-J for stainless steel up to 1/4" solid.
- Aggressive contact with blade into material. Let the blade do the work.
- Too much vibration due to insufficient clamping, worn or bent blade, or worn parts (see “Saw
Vibrates” below).
Machine will not turn on:
- Check overload. If it has been tripped, it will extend out. Push in after allowing saw to cool down to
re-set. Check continuity.
- Inspect power cord for damage. Check continuity. Replace if needed.
- Inspect brushes for excessive wear. Replace if needed.
- Do not exceed 30 minutes run time without cool down of saw.
- Check trigger switch for continuity. Replace if needed.
Losing Power:
- Inspect brushes and replace if needed.
- Extension cord too long. Limit cord length to 100’.
- Extension cord too thin. Use 12 AWG or larger.
Blade Guard Sticks:
- Remove guard and remove any foreign material. Wipe any excess material from guard & face
plate. If contact surface of guard or face plate is galled, use emery cloth or fine sandpaper to
smooth out surfaces. Guard must move freely. Use light grease on mating contact surfaces to aid
in movement.
- Check guard return spring for sufficient tension. Replace if spring is weak.
- Check guard for distortion. Replace if distorted or damaged.
Blade Spins on Spindle:
- Check for proper tightness and installation. Inspect Inner blade flange and outer blade flange
centering shoulder for wear or damage. If the flanges are allowed to slip too many times, they will
no longer hold the blade properly. Replace if wear is excessive.
- Check flange mating surfaces for flatness. Replace if excessive distortion exists.
- Check to ensure flat washer and lock washer are present between bolt head and outer blade
flange.
Saw Vibrates:
- Check blade for tightness.
- Inspect inner blade flange and outer blade flange centering shoulder for wear or damage. Replace
if needed.
- Check to ensure work is properly clamped. Both primary and drop piece can cause vibration.
- Check bevel lock and depth lock for tightness.