1998-2001 Yamaha YFM600FHM Grizzly Factory Service Manual, Page 134Get this manual
IIANOSJP Ito) -BATTERY INSPECTION Charging method using variable-current (voltage) type charger
Measure the open-circuit voltage prior to chargingNOTE:
Charger
AMP meter
Voltage should be measured 30 minutes after the machine is stopped
Connect charger and AMP meter to the battery and start charging
Set the charging voltage at 16 17 V(If the setting is lower, charging will be insufficientIf too high, the battery will be over-charged
Make sure the current is higher than the standard charging current written on the battery