Yamaha YBR 125 workshop manual
Yamaha YBR 125 parts in the USA
Yamaha YBR 125 Ignition coil testing
testing the Yamaha YBR 125 igniton coil .
you can test primary side of coil the 2 small connectors that have the spade conntection 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 igniton coil .
to test this use a Voltage meter or Probe to test for voltage coming in , i use my Snap on probe
which is one of only 4 snap on tools i own , and its supurb in fact all the snap on tool i own are
will have to get more one day .
testing primary side of ignition for voltage signal .
testing secondary side of coil with multimeter
Must have electrical tools
12v circuit tester mines snap on but hard to find in uk
click here for any on ebay now .
Kewtech multimeter , there are better and worse .
this has always done everything ive asked of it and would recommend them , you can get a lot cheaper .
see here on Ebay UK
Power Probe , dont use that often but an excellent tool when needed
mine is a cheaper version this one here in ebay uk
you can get Snap On Powerprobe which is excellent if you can afford it it see them here on ebay uk
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