testing the Yamaha YBR 125 ignition coil .
you can test primary side of coil the 2 small connectors that have the spade connection fittings it should be 2.15~2.64 ohms .
if this is ok its likely you need to replace coil or spark plug , lead or cap .
obviously check or even better replace lead/cap/plug
this is presuming you have power coming to the primary side of the ignition coil .
to test this use a Voltage meter or Probe to test for voltage coming in.
Testing primary side of ignition for voltage signal .
connect probe to a good earth
locate primary coil side connector
it should flash if turned over slowly and is a steady light if running testing secondary side of coil with multimeter
see more Yamaha YBR 125 blog posts
watch a video here
see more Yamaha YBR 125 blog posts
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