Checking The Brush; Checking The Magnet Switch - SELVA MARINE Blue Whale 250 EFI Service Manual

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ELEC
4. Check the armature
Replace if out of specifications.
Armature continuity
Commutator segments b
Segment –
Armature core c
Segment –
Armature shaft d

Checking the brush

1. Measure the brush length. Replace the
brush assembly if below specification.
Brush standard length:
15.5 mm (0.61 in)
Wear limit a: 9.5 mm (0.37 in)
2. Check the brush holder assembly for
continuity. Replace if out of specification.
8-37
Electrical system
for continuity.
Continuity
No continuity
No continuity
Brush continuity
Brush 1 – Brush 2

Checking the magnet switch

1. Connect the tester leads between the
magnet switch terminals as shown.
2. Connect the positive battery lead to the
brown (Br) lead.
3. Connect the negative battery lead to the
starter motor body.
CAUTION:
Do not connect the battery for more than
1 second, otherwise the magnet switch
can be damaged.
4. Check that there is continuity between
the magnet switch terminals. Replace if
there is no continuity.
5. Check that there is no continuity between
the main switch terminals when the neg-
ative battery terminal is removed from
the starter motor body. Replace if there is
continuity.
S69J8440
No continuity
Br
S6P28790C
6P23H11