Question about 2005 Harley Davidson XL 1200 C Sportster Custom

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I got the bike rode for a while it sat for a couple of weeks and when I tried to start it it was dead. I tried getting the battery charged and it didn't work. I got a new battery and that worked for about a week and a half then I was riding one day turned the bike off to go into the store came out and it turned over for a second then lost all power. Got the bike home and tried it 2 days later and it started just fine. Had my friend check the voltage on the stator the voltage regulator and the batery and all was good. Started and stopped the bike 10 different times and it didn't have a problem. 2 days later tried to start the bike and once again it turned over once and lost all power and has been that way for 3 days now. Any ideas?

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  • Master
  • 4,565 Answers

If the bike is losing ALL power, I'm talking about dash lights, headlight, tail light, ALL lights, it's probably something tripping the main breaker. The breaker should be located either under the seat or behind the trianglular panel on the right side of the bike. I'd look for a frayed wire near the starter or around the rear cylinder due to the head in that area.

Good Luck
Steve

Posted on Nov 13, 2010

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Posted on Jan 02, 2017

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wd4ity
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SOURCE: bought a new battery rode

To check the output of the charging system, first, you must start with a fully charged battery. Then connect your DVOM (Digital Volt Ohm Meter) across the battery. Red meter lead to the positive post and the black meter lead to the negative post of the battery. Put the meter's function selection switch in DC VOLTS, 25 VOLTS OR GREATER scale. Start the engine and bring it to a high idle. Your meter should read between 14.5 to 15.0 volts.

If not, find where the regulator plugs into the alternator. A Big Twin is in the front of the engine and the Sportster is behind rear cylinder. In the stator side of the plug, there are two metal contacts. This is where you're going to check the voltage output of your stator. Put the meter's function switch in AC VOLTS, 50 VOLT OR GREATER scale. Start the engine and insert either meter lead into one metal contact and the other lead into the other contact. Do not allow the leads to touch each other or the engine case. Bring the engine to a high idle. If you're working on a Big Twin, you should be reading at least 30 volts, a Sportster should read about 25 volts. If you don't read this much, your stator is bad, If you do read this much, it's probably the regulator. But, since you said that you've changed the regulator at least once, I'd guess maybe another problem. Make sure you regulator is grounded to the frame. I always put one of those star type lock washers between the regulator and the frame on both mounting bolts. The regulator must be grounded.

Good Luck
Steve

Posted on Mar 16, 2011

sisadsl
  • 1508 Answers

SOURCE: I have a 1996 f3.. we replaced the voltage

look for 3 wires coming from the stator to the regulator, the same color, these should be the 3 phases of the stator and any pair of these should put out maybee 50v AC, with the bike running.
Also each pair of these should have similar resistance(engine stopped)and none grounded to earth
Then put the volt meter across the battery, it should read somwhere around 14 v DC with the engine running.

No AC -stator problem
Yes AC, No DC- regulator problem
Voltages can vary between makes and models, but hopefully this is the simple explanation

Posted on Jun 19, 2011

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I have a 1997 Kawasaki Prairie 400 4 by 4. It has sat for a while and I would go start it and stuff but after it sat for awhile I rode it and it rode fine. Now It bogs when I push the throttle. Help


Hi, Bridger if your bike has been sitting idle for months or years and you did not do any pre-storage maintenance I feel your pain it will probably have a dead battery and not want to start or if it starts it will idle and run poorly, here are the following steps necessary to complete in order to get your bike back to an acceptable running condition.
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