2006-2008 Yamaha Snowmobiles Apex/Attak Factory Service Manual, Page 62Get this manual

2006-2008 Yamaha Snowmobiles Apex/Attak Factory Service Manual, Page 62

BATTERY INSPECTION Charging method using constant voltage charger Measure the open-circuit voltage prior to charging INSP
the battery until the battery's charging voltage is 15 V This type of battery charger cannot charge the MF batteryA variable
voltage charger is recommended NOTE: Set the charging time at 20 hours (maximum) Measure the battery open-circuit voltage