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Hi I have an 09 zx10r and it will only start with jumper cables. When i pull the cables off the needle on the speedo goes crazy and the motor starts idleing rough then it finally just dies.. Any help would be greatly appreciated thank you.
 

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Your battery is either really bad, or you have an issue in your charging system. Did this just happen out of nowhere? Or have you recently done some work on the bike.

Hook a Voltmeter across the battery terminals, start the bike with the jump, then rev it to 4000 RPMs and see what the voltage is. If it is not above 12V you have issues.

Get the battery checked out. If they say it is bad, get a new one and put it in the bike and repeat the above test. If the Voltage is not above 12V your charging system has a problem. Your service manual should have something in it about checking the charging system.
 

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Your battery is either really bad, or you have an issue in your charging system. Did this just happen out of nowhere? Or have you recently done some work on the bike.

Hook a Voltmeter across the battery terminals, start the bike with the jump, then rev it to 4000 RPMs and see what the voltage is. If it is not above 12V you have issues.

Get the battery checked out. If they say it is bad, get a new one and put it in the bike and repeat the above test. If the Voltage is not above 12V your charging system has a problem. Your service manual should have something in it about checking the charging system.
Like he said. It is pretty easy to test if you have or can borrow a voltmeter or multimeter. Sounds like a bad battery.
 
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