HEADS UP!!!

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
WRider995

400F throttle stop screw

3 posts in this topic

Just bought a '00 WR400 and the previous owner says he removed the throttle stop screw. Is this okay? I know some have said to cut it down to shorter length and others have said to replace it with a '01 yz426 screw for about $8. What's the word?

Share this post


Link to post
Share on other sites

If you run it without one at all the slide will smack the inside of the lid everytime you hit full throttle. Eventually you will damage the top of the slide or the inside cover. While replacing the cover is not going to send you to the poor house, the slide isn't cheap to replace.

The best way to replace it is to go to remove the carb and go to your local hardware store. Purchase a small metric bolt and also two small nuts as locks. Thread the bolt in the housing from the bottom to the top and put the other nut on. Open the throttle until the slide just reaches the top of the throttle body. Adjust the bolt to allow no more travel than that. Add Locktight and Tighten the lock nut and reinstall the carb.

Cost me about 60 cents to replace the on on my YZ.

Good Luck...

Bonzai :)

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