Help please txt80 rookie 2005
 

Can anyone offer advice please.
I have been looking at the above bike for a mate. It suddenly stopped. There is no spark. He has substituted most part with another bike but still the same. I have checked the condition of all wires from the stator to the cdi and all seems good. He fitted a new kill switch. I had the stator off and cleaned all the grunge away and refitted it. Are there any common failures?
Fitted new plug lead and plug.

A few questions please

Does the kill switch ground the stator or break the circuit?
Can I disregard all other components like fan wiring and just concentrate on the wires from the cdi to the stator.
The pickup coil on the stator shows a flow to earth but I guess this would be correct as the coil would need to earth?
I was unable to find much info on the wiring.
Any advice please.

Thanks Ken

I have no trials bike experience, but a kill switch normally grounds the single stator winding that powers the CDI.

Most two stroke wiring diagrams show the trigger coil (pulser) directly connected to the CDI pins. The pulser may actually ground the CDI input to do the triggering, however I don't know if the pulser leads should show continuity to ground.

You may want to put the ignition coil on a different bike just to make sure it works.

Problems
 

Thanks for that reply.
The owner already had a cdi/coil from another bike and it made no difference.

I have tried the kill switch disconnected and also shorted to earth as not sure how it worked..

Can the trigger be tested?

Regards Ken

Attached are the values from the 2006 enduro manual (I expect the exciter would be the same on a trials bike).

Info
 

Thanks for that. Something to test now

Ken