Jump to content
Sign in to follow this  

Big bore kit, Jetting or valce clearence?

Recommended Posts

I bought a bike 2007 yz250f with a big bore kit, the guy told me it has a 290cc, Do I need to change jettings and or do I need set the valve clearence a little different, just because I have a hard time starting this bike.  Once started, it starts its fine but then if I leave it alone for a while its hard to start.  Also if I stall it, its really hard to start, just looking for direction.

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

Reply with:

Sign in to follow this  

×