Honda cr 125

[nigelm]

Can anyone help we have cr125 around 1993 and have no spark at the plug how do we test to see wher problem lies i have a multi meter and have gained acces to magneto and the black plastic box with four plus wires going to it (2 from the kill switch) and also what looks like the coil ( HT lead off it )
It was ok when we bought it used it 2 hours then replaced plug on advice from edgehill mx shop but now no spark even at new plug thanks in advance

 

[nigelm]

Any of you bike pro's able to give me some pointers the bikes in bits and im stuck
have tried to get a haynes manual but no luck !!!

 

[nigelm]

any of you bike pro's able to give me any pointers??

 

[76GMC1500]

How about the old plug, does it still spark with that one? I bought a new plug that wouldn't spark, once. It had a cracked insulator. Someone at the shop probably dropped it.