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starter problem 2012 1200c sportster

  #1  
Old 11-23-2017, 06:36 AM
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Default starter problem 2012 1200c sportster

battery good starter engages but doesn't have enough power to crank engine.Cranks fine with spark plugs removed
 
  #2  
Old 11-23-2017, 08:05 AM
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Is this the original battery?

What is your battery voltage?
It should be about 12.6 - 12.8 volts for a fully charged battery.

Code:
+-------------------+
| READING IN VOLTS  |
| PERCENT OF CHARGE |
| 12.7 100          |
| 12.6 75           |
| 12.3 50           |
| 12.0 25           |
| 11.8 0            |
+-------------------+
What does it drop to when you turn on the ignition?

What does the battery voltage drop to when you try to start the bike?
If it drops below about 9 volts you may have a weak battery.
Not enough cranking amps left.
 

Last edited by shanneba; 11-23-2017 at 08:09 AM.
  #3  
Old 11-23-2017, 08:29 AM
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battery live on a tender?

connections good/clean/tight on battery terminals?
 
  #4  
Old 11-23-2017, 08:33 AM
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How do you know the battery is good, did you load test it?

Don`t run out and buy a starter....
 

Last edited by Dan89FLSTC; 11-23-2017 at 08:34 AM.
  #5  
Old 11-23-2017, 11:32 AM
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+1
Load testing is the best way to check a battery. Most auto parts stores can load test for free. Double checking connections for corrosion and proper tightness may save you some cash and time.
 
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