My iQTS244, iQ360X, iQ360XR, iQMS362 is sparking and smells burnt

f. Possible Causes:

    i. Failed Brushes

    ii. Failed Armature (Electrical or Mechanical)

    iii. Failed Stator

g. There is a common issue with the iQ360X Armatures, and a conversion kit is normally offered.

h. The motor brushes may be worn or have failed. Check the brushes.

    i. On the 360X, the motor case end cap must be removed to check the brushes

    ii. On the iQTS244, IQ360XR and IQMS362, Motor brush caps are provided. Use a small flat head screwdriver or a            dime and loosen and remove the brush caps. The brushes should spring out.

i. The end bearing on the armature may have failed. Check the end bearing.

    i. This can be verified by manually rotating the blade and observing the commutator rotation. The commutator is the         brass ring at the end of the armature where the brushes ride.

j. If the saw has been serviced previously, the armature may be wobbling due to the armature end bearing rubber boot not installed.

    i. The motor cover will need to be removed so a visual inspection may be performed to verify the black rubber                   bearing bushing is installed.

k. If the saw was recently purchased and has had minimal usage (less than ten), the issue may be a defective armature.