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Makita LS0714 Sparking – Causes and How to Fix It

Makita LS0714 Sparking – Causes and How to Fix It

Click here to jump straight to: Makita LS0714 Parts (Spare Parts Drawings & Parts List)

If your Makita LS0714 mitre saw is sparking, it is usually a sign that one of the motor components is worn or damaged. While small sparks from the carbon brushes are normal, excessive or bright sparking indicates a fault that should be repaired to prevent further damage to the motor.

Below we explain the most common reasons a Makita LS0714 sparks and how to fix the problem.


Is Sparking Normal on a Makita LS0714?

A small amount of sparking inside the motor is normal during operation, especially when new carbon brushes are fitted. However, if the sparking is:

Then a fault is likely present.


Common Reasons a Makita LS0714 Is Sparking

1. Worn Carbon Brushes

Carbon brushes wear down with use and can cause excessive sparking when they no longer make proper contact with the commutator.

Symptoms:

Solution:
Replace the carbon brushes with the correct Makita LS0714 compatible brushes.


2. Damaged or Burnt Armature

A faulty armature is a very common cause of sparking on the Makita LS0714.

Symptoms:

Solution:
Fit a replacement Makita LS0714 armature.


3. Dirty or Damaged Commutator

The commutator is the copper segment the brushes contact. Dirt, carbon dust, or scoring can cause poor contact and arcing.

Symptoms:

Solution:
Clean the commutator carefully or replace the armature if badly worn.


4. Weak Brush Springs

If the brush springs lose tension, the brushes cannot maintain proper contact with the commutator.

Symptoms:

Solution:
Replace the brush holders or brush assemblies.


5. Shorted Field Coil (Stator)

A short circuit in the field coil can cause abnormal sparking and overheating.

Symptoms:

Solution:
Replace the Makita LS0714 field coil.


How to Diagnose a Sparking Motor

  1. Unplug the saw before inspection.
  2. Remove the brush caps and inspect the brushes for wear.
  3. Check for heavy black dust or burnt smell.
  4. Run the saw briefly and observe sparking through the vents.
  5. Stop immediately if sparks are excessive.

Can I Keep Using a Sparking Makita LS0714?

It is not recommended. Continued use can damage the armature and field coil, leading to a more expensive repair. Replacing worn brushes early can often prevent major motor failure.


Compatible Models

Some parts may also fit:

Always confirm your model number before ordering spare parts.


Makita LS0714 Sparking – Summary

If your Makita LS0714 is sparking, the most likely causes are:

In most cases, replacing the correct Makita LS0714 parts will restore normal operation and prevent further damage.