HYOSUNG Sense SD-50 Service Manual page 77

5-5 ELECTRICAL SYSTEM
STARTER MOTOR INSPECTION
CARBON BRUSHES
When the brushes are worn, the motor will be unable to pro-
cedure sufficient torque, and the engine will be difficult to
turn over. To prevent this, periodically inspect the length of
the brushes and replace them when they are too short or
chipping.
Service Limit
COMMUTATOR
If the commutator surface is dirty, starting performance will
decrease. Polish the commutator with #400 or similar fine emery
paper when it is dirty. After polishing wipe the commutator with a
clean dry cloth.
Measure the commutator under cut ①.
Service Limit
ARMATURE COIL
Using the pocket tester, check the coil for open and ground
by placing probe pins on each commutator segment and rotor
core (to test for ground)and on any two segments at various
places (to test for open), with the brushes lifted off the
commutator surface.
If the coil is found to be open-circuited or grounded, replace
the armature. Continuous use of a defective armature will
cause the starter motor to suddenly fail.
09900-25002
STARTER RELAY INSPECTION
● Disconnect the starter relay lead wire coupler.
Check the coil for "open" , "ground" and ohmic
resistance. The coil is in good condition, if the
resistance is as follows.
09000-25002
STD resistance
4mm(0.16in)
4mm(0.16in)
Pocket tester
Pocket tester
0-70Ϊ