HYOSUNG 2010 ST7, Service Manual

Page: 268 / 298

SERVICING INFORMATION 9-12
BATTERY
Sulfation acidic
white powdery
substance or
spots on
surfaces of
cell plates.
1. Not enough electrolyte.
2. Battery case is cracked.
3. Battery has been left in a run-down condition for a long time.
4. Contaminated electrolyte.
(Foreign matter has enters the battery and become mixed
with the electrolyte.)
Add distilled water, if the bat-
tery has not been damaged
and sulfation has not adv-
anced too far, and recharge.
Replace the battery.
Replace the battery or rec-
harge.
If sulfation has not advanced
far, try to restore the battery
by replacing the electrolyte,
recharing it fully with the bat-
tery detached from the motor-
cycle and then adjusting elec-
trolyte specific gravity.
Battery runs down
quickly.
1. The charging method is not correct.
2. Cell plates have lost much of their active material as a result of
over-charging.
3. A short-circuit condition exists within the battery due to excessive
accumulation of sediments caused by the high electrolyte specific
gravity.
4. Electrolyte specific gravity is too low.
5. Contaminated electrolyte.
6. Battery is too old.
Check the generator, regulator
/rectifier and circuit connec-
tions, and make necessary
adjustments to obtain speci-
fied charging operation.
Replace the battery, and cor-
rect the charging system.
Replace the battery.
Recharge the battery fully
and adjust electrolyte spe-
cific gravity.
Replace the electrolyte,
recharge the battery and
then adjust specific gravity.
Replace the battery.
Battery sulfation 1. Charging rate too low or too high. (When not in use, batteries
should be recharged at least once a month to avoid sulfation.)
2. Battery electrolyte excessive or insufficient, or its specific gravity
too high or too low.
3. The battery left unused for too long in cold climate.
Replace the battery.
Keep the electrolyte up to
the prescribed level, or
adjust the specific gravity
by consulting the battery
maker s directions.
Replace the battery, if badly
sulfated.
Battery dicharges
too rapidly.
1. Dirty container top and sides.
2. Impurities in the electrolyte or electrolyte specific gravity is too
high.
Clean.
Change the electrolyte by
consulting the battery
maker s directions.
Reversed battery
polarity.
The battery has been connected the wrong way round in the sys-
tem, so that it is being charged in the reverse direction. Replace the battery and be
sure to connect the battery
properly.
Complaint
Symptom and possible causes
Remedy