Honda GX240RT2 Service And Repair Manual page 274

gx240ut2_gx270ut2_gx340ut2_gx390ut2
STARTING SYSTEM
BRUSH LENGTH
Measure the brush length.
If the brush length is less than the service limit, replace
the brush (page 10-13).
STANDARD: 10 mm (0.4 in)
SERVICE LIMIT: 6 mm (0.2 in)
BRUSH CONTINUITY CHECK
Check for continuity between the brushes.
There should be continuity between both the positive
brushes.
There should be continuity between both the negative
brushes.
There should be no continuity from either positive brush
to either negative brush.
If the correct continuity of the brushes is not obtained,
replace the brushes (page 10-13).
ARMATURE MICA DEPTH
Visually inspect the commutator surface for dust, rust,
or other damage. If necessary, wipe it with a clean lint-
free cloth. If rusted or damaged, dress with a fine emery
cloth.
When the mica is clogged, or its depth is smaller than
the service limit value, recut the grooves using a hack-
saw blade or a small file.
SERVICE LIMIT: 0.2 mm (0.01 in)
ARMATURE CONTINUITY CHECK -
COMMUTATOR TO SHAFT
Check for continuity between the commutator and the
armature shaft.
Replace the armature if continuity exists between any
of the commutator segments and the armature shaft
(page 10-9).