FCR Question on a 06

[Lonestar_R]

I know this may sound stupid but where in the hell is the air fuel mixture screw on the FCR carb on the 06 R......my bike is very lean like just about everyone else's 06.....and I need to richen it up some....thanks for any help guys

[quadracer12]

yeah mine to. my header glows when starting. putting in the HRC kit today so hopefully all the carb mods will do the job

[RayWilt]

the air fuel is in th middle of the floatbowl near the front of the carb. Its hard to get to you have to turn the carb to get to it plus the stock one has a d shaped head on it so you need a special tool to adjust it looks like the tool for the accelerater pump adjustment in the hrc kit might work. I put one of the after maket screws in it and makes it real easy to adjust and helped to richen it up

[STR330R]

Thanks for the info. besides the main and the pilot jet what is the other jet inside the carb.

[quadracer12]

my kit came with a accelerator pump bypass jet. and no the accelerator pump adjustment tool is not the same size as the air fuel mixture srew.

[STR330R]

Originally posted by quadracer12
my kit came with a accelerator pump bypass jet. and no the accelerator pump adjustment tool is not the same size as the air fuel mixture srew.

Thanks alot didn't know what that other jet was for. Let us know how you HRC 06 runs.

[quadracer12]

HRC was awsome! felt like my old 330r. hits really hard and keeps pullin. works really well at high RPM's. money well spent

[Quad_Runner]

SOunds Great:macho

[STR330R]

Originally posted by quadracer12
HRC was awsome! felt like my old 330r. hits really hard and keeps pullin. works really well at high RPM's. money well spent

Really Good to hear!!!:D Thanks again

[remmyTRX]

Quad Racer,

Once you installed the HRC kit - did that fix your problem with being too lean?

[quadracer12]

no. i went from a 42 pilot to a 48 and its alot crisper. but it still don't want to start with any throttle. makes me think i should try a 52. though the 48 helped alot. running wise

alot of people think that the starting issue is electical but i beleive its in the carb. took the plug out and i have fire when i hit the buttom with some throttle. makes me think to much air not enough fuel. am i wrong?

[RayWilt]

what is you air fuel screw set at

[quadracer12]

HRC had me turn it half turn out from were it was stock.

[Houser450]

on my 06 if i take myairbox lid off take the spark arrestor out and do the wire mod what should i use for a
Main Jet
Pilot Jet
Air screw setting
any help or ideas appreciated

[andy roth]

I was telling some guys that my 06 wont start with any throttle and they said that their yfz,s wont either. IS it in the FCR carb??

[Transplant2]

Originally posted by quadracer12
HRC had me turn it half turn out from were it was stock.

Actually the manual says to turn it IN a half turn. Maybe that's the problem???

[4ABURN]

YES it is the fcr carb I had a 03 crf450r with this carb,bike run like a champ,but if you went to start it with some gas it would not start very well. soon as you touch the throttle the excellerator pump, pumps fuel in the engine,if the engine is running it is the right mixture,if you are trying to start it it to much fuel,because the engine is not pulling in enough air to mix with it.

Just my to cents:) I have delt with this carb for 3 years.

[Quad_Runner]

Originally posted by 4ABURN
YES it is the fcr carb I had a 03 crf450r with this carb,bike run like a champ,but if you went to start it with some gas it would not start very well. soon as you touch the throttle the excellerator pump, pumps fuel in the engine,if the engine is running it is the right mixture,if you are trying to start it it to much fuel,because the engine is not pulling in enough air to mix with it.

Just my to cents:) I have delt with this carb for 3 years.

Glad to hear the YFZ has starting problems when using the gas too. I really want the TRX but was leaning twoard the YFZ in fear of the starting problem with the 06 TRX.

[quadracer12]

Originally posted by Transplant2
Actually the manual says to turn it IN a half turn. Maybe that's the problem???

i done what the manual said. i just posted wrong. thanks for clearing it up. i figured out the dead engine start though. they better watch out at the ironman!