'03 charging problem - 600RR.net
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post #1 of 2 (permalink) Old 05-13-2011, 01:43 AM Thread Starter
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'03 charging problem

Hey guys, looking for some help with my 03rr. A couple of weeks ago my bike was having starting issues after riding in the rain on my way home from work. I dont think it was exclusively this as the battery I had in it was a cheap chinese CTZ10S to begin with. Anyway, went through the bike and checked fuses, relays, loose connections and everything looked fine. Static read of battery was 11.6VDC, never had it load tested though. Fuel pump would prime, lights would work etc, also would push start no problem. Figured it could be nothing other than a power problem so I replaced it with a freshly charged 13.0VDC and the bike fired right up.

I know the battery is being drained for a reason and I want to address the preliminary source thats causing this. When I installed the new battery, the idling voltage dropped dramatically to 12.1VDC, and when revved to 3-5k it went to 12.2VDC. Went for a little ride to drain the battery, came back home, turned bike off, and it would NOT start again as was expected.

Im looking for some advice on where to go from here. If i had no qualms about money Id just replace the whole thing R/R, stator, alternator, and starter motor. I suspect a new R/R would solve it, but Im reading now that the starter motors on the 03-04 600rrs have a habit of expanding causing excessive power drain on the battery. Im not sure if it helps to add that before I replaced battery the starter would turn slower and slower after each try on the starter button. Made a bone-headed move again and bought a cheap(er) battery because I didnt want to shell out $175 for a Yuasa, even though now Im seeing them for $110. So this battery thats currently in it has a CCA of 120 which might be too low compared to the Yuasa's 190. In addition, the bike does NOT start even COLD as the battery after testing it out today read 12.3VDC with ignition off. So Im not sure if it is R/R or if Im going to need a new stator or alternator. Any advice? I appreciate any input, thanks guys.

Last edited by Expatriate; 05-13-2011 at 01:50 AM.
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post #2 of 2 (permalink) Old 05-13-2011, 06:09 AM
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With the bike reading 12.2 when revved the problem will be your r/r - another common problem on 03-04 bikes.

Get a replacement one from an 05-06 and you should be golden.
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