2004 Yamaha YZ 125 "jet" Questions

what is the size of main jet of YZ125? Main Jet: 410 Main Air Jet: 2.5 Jet Needle: 6BFY43-74 Needle Jet: S-1 Pilot Air Jet 1: #40 Pilot Outlet: 0.7 Pilot Jet: 40

How do you know you should go with a bigger main jet? What exactly would it do for my 2001 YZ 125? a bigger main jet will make the bike run richer which means more gas. unless you have changed ...

need spects for carburetor main jet on mikuni ucal and spects for pilot air jet 1 and pilot jet 2 http://www.cmsnl.com/yamaha-yz125r-2003_model11245/partslist/A-12.html Site above has all the parts ...

...shorty silencer the head is shaved 80 thousnths and bored 20 over .bike is burnin hott what size jetting should be used for main and pilot. stock is 420 mai i have 2004 yz 125 fmf phatty pipe with ...

my yz125 runs like it is always cold, why? I just bought this Yamaha YZ125. It seems to run like is is always cold. If I run the engine up top and keep it there it seem to run a little better. I am ...

i have a 98 yz125, i race it but seem to have a lack in power in certain areas, ive changed my jetting a few times but seem to find the power else where and NOT where i need it, as of rite now im ...