YZ400F/YZ426F Hard to start

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  • AFelix

Posted January 28, 2015 - 12:41 PM


I have read counless post regarding dificulty starting the YZ400f and 426f's.


This is just a review of what helped mine.


I have a 99 YZ400f, and when she is cold, it would take 12+ rounds to get her started, once warmed up, she would fire 1st or 2nd kick. I switched to the iridum plug, and now she fires on about the 3rd or 4th round when dead cold. That one change was a god send to me.


Obviouly, this will not solve carb related issues, but I would suggest the iridium plug in all casses.

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