YZ400F/YZ426F Hard to start

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.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now