Stator Failure on 2011 CBR250R - Page 2 - Honda CBR250R Forum : Honda CBR 250 Forums
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post #11 of 23 Old 05-15-2015, 08:55 PM
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I think the regulator is also called the Rectifier. Right? I called the dealer and they said it cost $ 175 and stator is $ 145. I live in Northern Cal.
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post #12 of 23 Old 05-16-2015, 07:40 AM
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Though they are most often combined into 1 unit, and may be called either by the counter person, the regulator and rectifier are not the same.

Rectifier - the charging system produces AC current but the battery and other components require DC. Through a series of diodes, which only allow current to flow in one direction half of the sine wave is shaved off leaving DC current.

Regulator - The alternator is capable of producing far more than 12 to 14 volts. Some motorcycle alternators can produce a phase to phase no load un regulated, un rectified voltage of 75 or more volts AC at higher engine speeds. The regulator reacts to system demands and holds voltage at a useable level.

For the hair splitters reading this - yes there are diodes that flow in both directions. Zener diodes only allow flow in one direction until a specified voltage (zener voltage) is reached at which point they allow flow in the opposite direction.
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post #13 of 23 Old 05-16-2015, 08:20 AM
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GPZ550,
Excellent description...
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post #14 of 23 Old 05-16-2015, 10:25 AM
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Quote:
Originally Posted by larry View Post
I think the regulator is also called the Rectifier. Right? I called the dealer and they said it cost $ 175 and stator is $ 145. I live in Northern Cal.
Those are full retail prices that the dealer quoted. You can save some money by ordering OEM parts through various online Honda dealers like Partzilla, Cycle Parts Nation, Honda East Toledo, and a few others.

For example, Partzilla has the stator listed at $105.97... ref# 2 here: Honda Motorcycle Parts 2011 CBR250R AC ALTERNATOR Diagram

The regulator/rectifier is $127.21... ref# 4 here: Honda Motorcycle Parts 2011 CBR250R AC WIRE HARNESS (CBR250R) Diagram



When it comes to electrical problems, you'll want to perform component tests with a digital multi-meter and a Service Manual (which you need to have if you plan on doing this type of work yourself)) to verify with certainty which part has failed, rather than blindly replacing a bunch of suspected parts which may or may not be faulty. As most mechanics & dealers will tell you, electrical parts are not returnable so you'll want to make sure you're only buying the part (or parts) you actually need.
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post #15 of 23 Old 06-15-2015, 09:02 PM
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Can you please let me know where and how to replace the Rectifier? I have taken out the Stator and kind of look good to me. I mean the wiring is more Gold then Black in color. Please advise. Thanks
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post #16 of 23 Old 06-16-2015, 08:59 PM
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By any chance, do you know where is the VR?

Thanks
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post #17 of 23 Old 06-16-2015, 09:06 PM
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By any chance, do you know where is the VR?

Thanks
Dude, I responded to the other thread you posted in about this same issue earlier today. https://www.cbr250.net/forum/cbr250-p...tml#post558826

Tis better to be thought a fool and remain silent, than to open one's mouth and remove all doubt.
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post #18 of 23 Old 06-16-2015, 09:30 PM
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Sorry guy, I am still do not know how to work the Forum. Thanks
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post #19 of 23 Old 06-17-2015, 01:08 AM
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Sorry guy, I am still do not know how to work the Forum. Thanks
No worries; just check the other threads you post in before making another reply for the same information. Keeps the clutter down.

Tis better to be thought a fool and remain silent, than to open one's mouth and remove all doubt.
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post #20 of 23 Old 06-17-2015, 04:03 AM
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first check the rectifier if that is good then the stator...
we have seen few cases in India as well with stator failure but those were at good 30k-35k miles

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