Yamaha YFM660FS, Supplementary Service Manual

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CHK
ADJ
CHECKING THE BATTERY
Batteries generate explosive hydrogen gas.
Always follow these preventive measures:
●
Charge batteries in a 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 han-
dling batteries.
KEEP BATTERIES AND ELECTROLYTE
OUT OF REACH OF CHILDREN.
1.Remove:
●
Seat
●
Battery holding bracket
●
Battery lead cover
Refer to “SEAT, CARRIERS, FENDERS
AND FUEL TANK”.
2.Disconnect:
●
Battery leads
CAUTION:
First disconnect the negative lead
1
, then
disconnect the positive lead
2
.
3.Remove:
●
Battery
4.Check:
●
Battery condition
*****************************************************
Checking steps:
●
Connect a digital voltmeter to the battery ter-
minals.
NOTE:
The charge state of an MF battery can be
checked by measuring the open-circuit voltage
(i.e. the voltage when the positive terminal is
disconnected).
Tester (+) lead
→
battery (+) terminal
Tester (–) lead
→
battery (–) terminal
Open-circuit
voltage
Charging time
12.8 V or higher
No charging is
necessary.