125-200cc 2009 WR125/165 electrical problems

The bike was running fine and then slowly started to lose power then cut out. Got the bike back to my van and found no spark. Changing the plug wired removed kill switch and wiring still no spark. Whilst checking for a spark with the plug holding it against the cylinder with my thumb over the end kicking it over it was completely dead. Then! by accident I kicked the bike over without the plug touching the cylinder and it sparked because I felt a shock! Got the bike home checked the coil cap (HT cap)on my meter, which was fine and the HT lead/cable. With my meter between the earth cable and power from the generator (coil removed) I kicked the bike over and my meter responded with a jump in voltage. So the only thing i'm not sure about is the coil? Also, what resistance(ohms) values should I see from the coil when it disconnected from the bike?...because I've nothing/no reading? Also, what reading should I see from the generator without kicking the bike over, and then kicking the bike? Any advice guys i'm not knowledgeable on bike electrics as you can tell.

thanks

The same thing happened to me today too. Bike ran perfect in the morning then cut out and no spark.

Either the coil has packed up or the low tension side has gone to earth Spud, Also look at the coil mount as my 2010 broke the thing rigt off !
Unplug the connections to the left switch gear if still connected and see if it fixes it

When Triggers did the same thing the wireing loom had shorted inside all the sheathing in the area just behind the head stock
Hope you get it sorted soon

Thanks Guys. I've not any switch gear and no electrical wiring apart from what comes from the generator straight to the coil. What readings should I see on my meter between earth and power from the generator?

swapped my coil for a spare I had and problem solved.

You can check the resistance - ohms reading in the coil
What is it a CR or WR ignition?

Check your grounds. A faulty ground contact will damage the coil and cause ignition problems. The area where the coil is secured must be clean.

X2!

2009 wr 125

When I removed the coil one of the frame mounts had snapped off. Does it require both mounts to earth properly?

Sounds to me like you've found the problem

hopefully