Brush and brush holder

WARNING: This page is about a different variant/trim than selected.

Verify that there is no continuity between each insulated brush and plate using a tester.
- If there is continuity, replace the brush holder.
  
  Fig 1: Verifying Continuity Between Brush And Brush Holder
  Courtesy of MAZDA MOTORS CORP.
Measure the brush length.
- If any brush is worn almost to or beyond the minimum specification; replace all of the brushes.
Starter brush length

Standard: 12.3 mm {0.48 in}

Minimum: 7.0 mm {0.28 in}

Fig 2: Measuring Brush Length
Courtesy of MAZDA MOTORS CORP.
Measure the brush spring force using a spring balance.
- If not within the minimum specification, replace the brush and brush holder component.
Starter brush spring force

Standard: 18.3-24.9 N {1.87-2.53 kgf, 4.12-5.59 lbf}

Minimum: 5.9 N {0.6 kgf, 1.3 lbf}

Fig 3: Measuring Brush Spring Force Balance
Courtesy of MAZDA MOTORS CORP.