TRX300FW Spark Issue

[Francois]

Its running found one on shelf at a dealer in a smaller town. This one is a little different has two wires coming out. Parts guy says its for the optional cooling fan. CDI part # 30410-hm5-s01. Guess that gives me an excuse to add the fan and maybe a oil cooler.

[ZeiK]

[keens atv]

Im a machanic at a atv shop and sometimes the soleniod will cause this ,the starter will spin over fine but it want fire untill you let of the button . It will go bad and draw your spark down to nothing.