Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0

Idiots guide to jetting?

2 posts in this topic

Is there a good page or article someone could direct me towards so I can learn how to adjust my carb? I've never messed with my carb but know it could be better. It pops on decel and has some hesitiation. I've been following these jetting threds but they are all directed towards people that have a clue as to what they are doing. I'm looking for a good beginers guide for our carbs and something that'll tell me what's what on our carbs.




"What's that?"

"It's a Yellow 99' YZ400!!"

Share this post

Link to post
Share on other sites



You might be able to get some info out of these articles that someone posted on TT a while back.

Also, there's some useful info in your manual.

Between these three resources and all of the different posts (I usually read the 250f and wr426 side) I have learned quite a bit about tuning the carb - a few months ago I had no clue (and wouldn't touch it), now I am pretty confident with the basics.

And just post questions...people will help you out.


Share this post

Link to post
Share on other sites

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
Sign in to follow this  
Followers 0