Join Date: Sep 2006
Location: Simpsonville, SC USA
Thanks, thunderglass, those numbers match mine pretty closely. The battery seems to be holding its charge well, too.
As for the spark:
I pulled the tank and seat last night so I could get at everything. Popped all the connections and measured resistances of the coils, the exciter, and the pickup. Measured voltage from the exciter and the pickup. All apparently functioning. Measured continuity on all the relevant points of the wiring harness and ruled out any shorts. Measured the function of the kill circuit (Justin, I was right about the kill switch - the contacts are reversed on that diagram). Everything was fine.
So I snapped it all back together and gave it a crank ... and ...
... it started on the first rev and ran fine.
I suppose there was a loose connection somewhere. Oh, by the way, I did try to crank it before doing any of this stuff, in order to try to rule out an intermittent problem inside the CDI. So this isn't 100% conclusive, but I did feel like one of the molex connectors on the CDI wasn't seated as well as the others.
All in all the battery/charging thing was a red herring; the problem was that he was running the battery down because the spark wasn't consistent.
Anyhoo, thanks for the help and the info.
PS I love cheap repairs.
Oh, and there is one small difference between what I have and the diagram I linked to (at least in this particular circut). Instead of two separate coil primary wires, both coils come from a single primary connection and the extra pin is connected to the side stand switch.