Intermittent spark?!?

[Cr500/90]

Grounding plug to head sparks Intermittently and is weak

 

[mervhengst]

make sure your stator is clean along with your magnets on your flywheel. How long has it been since it last ran?

 

[bummer981]

You can use an ohm meter to test the output of the stator and your ignition coil. The values are in thr Clymers manual.

http://www.blasterforum.com/general-support-17/downloadable-yamaha-blaster-manual-17325/