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Post by jetmechmarty on Oct 22, 2004 17:20:57 GMT -5
I've got a no spark 650. I am suspicious of the pick-up coil. I separated the connector under the left side cover. BTW, my bike is a 1983 SK. I believe the cable coming up is from the pick-up coil. With an ohm meter, I read the mail side of the connector. There is no continuity between any (white/red, white/green, and blsck/white). They all indicate infinity.
On the female side 700 ohms was indicated between white/red and black/white. Infinity was read any other way I read it.
Is there another connector closer to the pick-up coil? Looking at the schematic on Jean's site, I think I should read 700 ohms white/red to black/white and 700 ohms white/green to black/white on the male connector. Does this sound right?
Thanks to those of you who choose to study this!
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dburge
Full Member
 
Senior Technical Advisor
Posts: 116
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Post by dburge on Oct 22, 2004 19:00:05 GMT -5
700 ohms is correct for the pickup there are two windings . The problem is likley the black box it is usually loose connections on the pc board I have some luck repairing them and the components are common. Dwayne
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Post by jetmechmarty on Oct 22, 2004 19:06:39 GMT -5
That being the case, then one of the coils must be open in the pick-up coil. I haven't dismantled enough stuff to be sure I'm on the correct cside of the connector.
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Post by jetmechmarty on Oct 23, 2004 17:08:11 GMT -5
I have a bad pick-up coil on my '83 SK. When I replace it, will I need to time the ignition? On a new one, does it come with enough wire to go all the way to the connector, or will I have to cut into the sheathing and butt splice it? Any good tricks?
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dburge
Full Member
 
Senior Technical Advisor
Posts: 116
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Post by dburge on Oct 23, 2004 19:36:07 GMT -5
jetmeckmarty I guess i did not explain myself very well . there are two coils in the pickup connected together i believe the black is the center each winding is 700ohms one is retard for starting the other is run the ign box switches after the bike starts . if you have 700 ohms from black to the the other two (each) your pickup is very likely good . if you do have to replace scribe around the old one put the new one on that spot. Dwayne
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Post by jetmechmarty on Oct 23, 2004 20:50:58 GMT -5
Thanx Dwayne. I don't have 700 ohms each. One of them is open.
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Post by jetmechmarty on Oct 28, 2004 10:53:40 GMT -5
I plugged in the pick-up coil I got from Dwayne and the bike started right up. Thanks Dwayne!
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dburge
Full Member
 
Senior Technical Advisor
Posts: 116
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Post by dburge on Oct 28, 2004 20:46:27 GMT -5
Marty Glad to hear that the bike is running ok . and thanks for the kind words. Dwayne 650 CENTRAL Sturgis S D
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Cannibal
New Member
Orlando FL, 81,82 xs 650, temporary Kaw 454 ltd
Posts: 25
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Post by Cannibal on Mar 3, 2005 17:03:25 GMT -5
I`m facing the same dilema on my newly aquired 81. I only had spark at the initial push of the starter button. Then no spark there after during cranking Swapped out the TCI unit from my running 82 with no change. Checked resistance at the pickup coil plug. 725 ohms athe orange Infinity at the grey. Seams to be a bad pick up coil. Where can I get a replacement . Mikes XS doesn`t have them on their website.
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Post by Six-Five-O on Mar 6, 2005 2:48:28 GMT -5
Try watching Ebay, or asking in the "Parts Needed/Wanted catagory...Also check with any of the vendors listed in the "Links" ..These are not available from Yamaha anymore, but there are plenty of used ones out there that are still good.
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Post by trix13 on Aug 16, 2018 8:56:24 GMT -5
I know this is an old post, but I'm looking for a pickup for my 1980 XS. Anyone?
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