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Posted by jhermann on July 24, 2008, 11:02 am
I have a 1995 JR50 with no spark. I also have a 1980 JR50.
The early 1980 model uses points and condensor whereas the
1990 model uses a CDI ignition. I have a service manual for
the 1980 which has the schematic for the old ignition. I need
the schematic and relavent pages for the late model bike so
that I can confirm how to check the pickup and ignition units.
Does anybody have a service manual with this information?
I have measured around 165 ohms for the pickup coil (which
I think is good/correct), and I have measured 16Kohms for the
spark plug wire to ground resistance. I get no conduction through
the input wire to ground for the ignition coil (I also believe the
CDI unit is built into the ignition coil assembly but have found
no information to confirm this). When I put an AC meter on the
input to the ign coil, I get a reading; I get no reading on the
spark plug wire; does this conclusively determine that the
the ign coil/cdi unit is bad? Thanks for any help/info.
John
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