TOHATSU BFT75A - Starter Motor Inspection

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STARTING SYSTEM
STARTER MOTOR INSPECTION
BRUSH LENGTH
Measure the brush length [1]. If brush length is less
than the service limit, replace the brushes as a set.
MICA DEPTH
Measure the mica depth [1].
If the grooves are clogged or mica depth is less than the
service limit, recut the grooves using a hacksaw blade
or a small file.
ARMATURE
Check the armature and shaft gear for wear and
damage.
Check the commutator [1] for damage, dust, dirt, and
metal particles.
If there is stain, irregularity, and/or evidence of burning,
clean with emery paper [2] #500 or #600.
STANDARD: 12.3 mm (0.48 in)
SERVICE LIMIT: 7.0 mm (0.28 in)
[1]
STANDARD: 0.40 – 0.50 mm (0.016 – 0.020 in)
SERVICE LIMIT: 0.20 mm (0.008 in)
[1]
[1]
[2]