failure to charge

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09 May 2009 21:18 #289667 by exoskel
failure to charge was created by exoskel
Hello all, I did search before posting so forgive me if I didn't see the relevant topic!


It seems that my battery isn't being charged while the engine's running. I've checked for loose connections, bare wires, checked the fuses, the battery is 2 weeks old. Throttling up will not increase the brightness of the headlight. Would my next step be to check the regulator/rectifier or the alternator? Also, I am unsure how to verify that the alternator is working as it should!

Thanks in advance for your help!

1979 KZ750B4
1998 Yamaha Blaster
South Bend, Indiana

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09 May 2009 21:21 #289673 by PLUMMEN
Replied by PLUMMEN on topic failure to charge
check your voltage at battery while idling then at around 3000 rpms or so to see if voltage increases.then id check regulator and associated stuff

Still recovering,some days are better than others.

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10 May 2009 18:38 - 10 May 2009 18:38 #290015 by exoskel
Replied by exoskel on topic failure to charge
it is the R/R that is at fault! it seems completely dead.

now the problem, finding one that works for my bike without shelling out $200+ for one from babbitts

1979 KZ750B4
1998 Yamaha Blaster
South Bend, Indiana
Last edit: 10 May 2009 18:38 by exoskel.

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10 May 2009 18:40 #290017 by PLUMMEN
Replied by PLUMMEN on topic failure to charge
what does it interchange with? B)

Still recovering,some days are better than others.

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10 May 2009 19:28 #290044 by Patton
Replied by Patton on topic failure to charge
If not already checked with Z1E, this reg/rec combo unit might fit.

Possibily this R/R

Good Luck! :)

1973 Z1
KZ900 LTD

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10 May 2009 19:51 #290053 by exoskel
Replied by exoskel on topic failure to charge
Well this looks like the one! Seems much better than buying a used one from a salvage yard that'll charge half of what the dealers charge!

Thanks so much Patton, you're #1 in my book ;)

1979 KZ750B4
1998 Yamaha Blaster
South Bend, Indiana

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