1998-2001 Yamaha YFM600FHM Grizzly Factory Service Manual, Page 132Get this manual
IIANOSJP It BATTERY INSPECTION Batteries generate explosive hydrogen gasAlways follow these preventive measures: Charge batteries in well-ventilated area Keep batteries away from fire, sparks or open flames (e.g welding equipment, lighted cigarettes, etc DO NOT SMOKE when charging or handling batteriesKEEP BATTERIES AND ELECTROLVTE OUT OF REACH OF CHILDREN1.Remove: Seat Refer to "SEAT, CARRIERS, FENDERS AND FUEL TANK"
2_Disconnect: Battery leads
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First disconnect the negative lead disconnect the positive lead 3.Remove: Battery holding bracket Battery Volt meter 4.Check: Battery condition