Do you need to buy a jet kit for a YFZ450?
Yes you will need to buy new jets in order to re-jet. www.jdjetting.com or go to your local yamaha dealer and buy a GYTR jet kit for the YFZ450. They are both in the 60 dollar neighborhood but you are purchasing something that will help your quad work better for years to come.
What should the idle settings be on a YFZ450?
Anything above 1500ft should lean the settings accordingly. Also, as a good adjustment you should raise the idle rougly 10 steps on the knob. The dealers set the idle way too low and that is a big cause for stalling these things. YFZ w/baffle out and lid off: #5 or #6 clip same settings as above.
What are the jetting settings on a YFZ?
YFZ w/pipe and lid off: JD blue needle #3 168m 45p 2.5 turns mixture screw. The above settings are somewhat rich but this engine craves tons of fuel and tons of air to make big HP. I have yet to foul a plug running the JD Jetting settings on my YFZ with a Sparks pipe and the YZ exhaust cam.
Can you use the YZ dirtbike Jets for the Keihin FCR?
I’ve got a YFZ with fmf titanium 4, power bomb & YZ cam im getting a bit of hesitation from idle example if im at dle and open to full throttle it kinda shuts of the n sometimes pics up. what jets should i be useing and can I use the YZ dirtbike jets? You can use any jets that are for the Keihin FCR carb.
Yes you will need to buy new jets in order to re-jet. www.jdjetting.com or go to your local yamaha dealer and buy a GYTR jet kit for the YFZ450. They are both in the 60 dollar neighborhood but you are purchasing something that will help your quad work better for years to come.
How much does a 2005 Yamaha YFZ450 cost?
2005 Yamaha YFZ450 Limited Edition Specifications Model Type Sport BASE MSRP (US) $7,099.00 Dealers Yamaha Dealers Warranty 6
Anything above 1500ft should lean the settings accordingly. Also, as a good adjustment you should raise the idle rougly 10 steps on the knob. The dealers set the idle way too low and that is a big cause for stalling these things. YFZ w/baffle out and lid off: #5 or #6 clip same settings as above.
YFZ w/pipe and lid off: JD blue needle #3 168m 45p 2.5 turns mixture screw. The above settings are somewhat rich but this engine craves tons of fuel and tons of air to make big HP. I have yet to foul a plug running the JD Jetting settings on my YFZ with a Sparks pipe and the YZ exhaust cam.
2005 Yamaha YFZ450 Specifications Model Type Sport BASE MSRP (US) $6,899.00 Dealers Yamaha Dealers Warranty 6