Inspect Armature Commutator; Inspect Brushes - Briggs & Stratton Vanguard 430000 User Manual

Figure 59

Inspect Armature Commutator

The armature commutator may be cleaned with fine
sandpaper (#300-500 grit). DO NOT use emery
cloth. Commutator may be machined to no less
than 27.0 mm (1.062 in.).
Slots between the commutator bars should be
cleaned with a hack saw blade after cleaning and
machining (Figure 60).
Figure 60
The armature should be checked for shorts with a
growler.

Inspect Brushes

Minimum brush dimension is 2.95 in. (7.5 mm)
(Figure 61). If brushes are worn less than
specification, replace the brushes or stator housing.
Figure 61
1. Use a digital multimeter to check for
continuity between field coil wire and
brushes (Figure 62).
2. Set the meter to the +))))) position.
3. Attach either meter test lead to field coil wire.
4. Contact first one, then other brush with other
test lead.
Figure 62
• Meter should make continuous tone
(continuity).
• If meter does not make a tone, (no
continuity), replace starter housing.
5. Attach either test lead to starter housing
(Figure 63).
6. Contact first one, then other brush with other
test lead.
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