1997 Yamaha YFM600FWAK ATV Service Manual, Page 103Get this manual
IIANOSJP Ito) -BATTERY INSPECTION Charging method using variable-current (voltage) type charger
Measure the open-circuit voltage prior to chargingNOTE:
Charger
Voltage should be measured 30 minutes after the machine is stopped
AMP meter
Connect charger and AMP meter to the battery and start charging
Set the charging voltage at 1617 V{If the setting is lower, charging will be insufficientIf too high, the battery will be over-charged