Question about 2000 Suzuki GSX-R 750

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THE BIKE WONT KEEP A CHARGE - 2000 Suzuki GSX-R 750

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Remove the seat to access the battery.
A loose battery connection will prevent charging, Tighten if loose.
If tight, start the bike.
Use a multimeter set on d/c volts or just a volt meter.
Hook red to positive and black to negative.
should read 12.50 volts - 13.50 volts at idle.
Anything under 12.50 means not charging at idle.
Rev motor to 2000 rpm. the meter should read 13.50 - 14.8. If the volts do not change, then your bike is not charging, Anything Higher than 15.0 means that your bike is overcharging, which usully fries the battery and blows the headlight fuse and/or main fuse.

If over/undercharging, this means that the voltage regulator is bad.
Before you buy another one, make sure the one you have is plugged in all the way and that the connectors are clean.
I had a GSXR 750 that sat for a while and i had to clean every connector on the bike before it would run/operate like it should, so a dirty or loose connection should be checked first.
Saves you a lot of money too because voltage regulators are usually over $100.

If you do not ride for months at a time, your battery will discharge over time.
a battery tender or battery charger is needed to keep the battery charged when the bike is not in use. Motorcycle batteries are not like car batteries, that seem to last forever. 4-5 years is about all you'll get out of a motorcycle battery on a motorcycle that is ridden alot.
On a motorcycle that is barely ridden, won't last much more than 2 years if your lucky.
Hope this information was helpful
Best regards
Big Al

Posted on May 28, 2011

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Posted on Jan 02, 2017

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