1998 YZ400F with a 03 450 card. Best jetting specs?

I know im not the first person to swap the carburetors. Wondering if any one knows what are the best jet sizes to start out with to get it tuned right? Bike also has hot cams.

Model:1998 YZ400f with 03 450 carb

Edit Revision Date:

Main Jet:????

Pilot Jet:????

Starter

Jet:????

Leak Jet (if any):

Fuel screw/Setting:????

Needle/Position:????

Filter:UNI

Pipe/muffler:03 YZ450

Altitude Range:1500 feet

Temp Range:40F-120F

Humidity Range:0%-40%

Comments: Phoenix desert riding mainly.

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