Jetting-'06 YZ450F

5 replies to this topic
  • Oouthere

Posted April 15, 2006 - 04:25 PM


Many thanks to those of you that posted the 48/170 combination. Before starting my new bike I installed these and adjusted the low speed speed mixture to 2 turns and it was spot on.

How much better does it get :thumbsup:

One kick starting since the rejetting!


  • DPW

Posted April 15, 2006 - 04:47 PM


TT is a great place...send "Burned" a Christmas card!

  • NYMXer

Posted April 16, 2006 - 04:07 AM


I am grateful for learning about the rejetting here. :thumbsup:

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • riderman329

Posted April 16, 2006 - 04:40 AM


i'm running a 165 mj a 48 pilot, stock leak jet and are the rest,
i have a ready air filter, and an aftermarket exhaust system.
My fuel screw is set at 2 turns out, in 70 degree weather.

i'm just wondering if i should move the clip up on the needle?

on the start line my bike was popping a bit, so would that help at all? or should i play with the fuel screw some more?
what about a bigger main jet like a 170 go smaller with the 160?


  • Ga426owner

Posted April 16, 2006 - 05:04 AM


In 90 degree temps yesterday the 48/170 combo worked flawlessly all day with no popping :thumbsup:

  • DPW

Posted April 16, 2006 - 05:43 AM


In 90 degree temps yesterday the 48/170 combo worked flawlessly all day with no popping :thumbsup:

Same in North Texas yesterday.

Related Content


Is the 2016 GYTR Yamaha YZ450F too fast? by Fryboy

Dirt Bike   Special Interest Forums   Pro Racing
  • * - - - -
  • Hot  241 replies

yz250x vs 450 4t comparisons (preferably desert riding) needed by JakeNorthrupYZ450F

Dirt Bike   Make / Model Specific   Yamaha   Yamaha 2-Stroke
  • 9 replies

YZ450F 03 Sparks driving me crazy by SirAttard

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 5 replies

Help with 2000 yz426 by weekend woods racer

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  36 replies

Michigan Motocross Tires by 288yz450

Dirt Bike   Dirt Bike Regional Discussion   North
  • 1 reply

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.