YFZ carb air/fuel mix screw.

[speedy]

Wher is the air/fuel mix adjustment at on the 04 yfz 450 carb.

[BigVince]

and to anyone who can answer that question... where is the air/fuel mixture screw on an 06?

Thanks in advance

[woodsrider4ever]

i believe its on the bottom of the card tods the engine in the fron of the card i belive its #49 correct me if im wrong i believe its the same in all yfzs 04-07

[GPracer2500]

Yep, that's it. Same place for all years of YFZ (and all FCR carburetors for that matter). It's not readily visable from the outside. The "head" of the screw is covered by a shroud that's part of the float bowl. At the front of the float bowl you'll see a round hole. The fuel screw is up inside there.

Not sure about YFZs, but on some FCRs the hole is blocked by a plug. It can be removed by drilling a hole in the plug, inserting a wood screw, and then pulling the plug out. Don't drill too far! You don't want to hit the screw. Or, remove the float bowl and tap out the plug from the other side.

[BigVince]

fantastic... thanks for the help.

[woodsrider4ever]

yep no problem