99CBRXX

I found out recently that the mixture screw on my stock carb needs a special tool to change the setting. I thought about going to a stock crf 70 carb instead but i was curious to see if there are other 50 years where the mixture came with a normal screw that anyone can change, and if so, if i could buy that screw and just throw it in where mine is now.

LILFIFTY

uh my 04 motor i just got has a normal screw? i need mine tho sorry :-P

99CBRXX

is the needle on your carb adjustable too? those are the real probs with my carb....if i can get the needle and the adjuster screw from an 04 from bikebandit i won't bother w/ a new carb. it's just pissing me off not being able to dial my mixture right.

LILFIFTY

can you get som pictures of whats on there now? for idle and air mix i have two normal screw heads that i use a flat blade screwdriver to adj.

99CBRXX

If you look at the mixture screw in the pic you can see it's recessed on the '06 and instead of a standard screw head it needs a special tool. the head of the screw is in a "D" shape. That coupled with the fact that the needle only has one notch in it suggests to me that for a little while Honda didn't like people screwin w/ the fifty's mixture. and yes, that is the right screw for it b/c i thought the first one i had was broke...chewed it up gettin it out and then bought a new one....same thing.

Ryan Moore

thats wack that they arn't adjustable. no needle and no air screw, thats like 90% of dialing the carb in with those 2 adjustments.

99CBRXX

yeah, i'm having enuff trouble learning to stunt this thing as it is...let alone having to do it w/ a half adjusted carb. kinda hard to keep a whoolie rollin with a fouled up mixture. that stock 70 carb is lookin better all the time.....And the funniest part of the whole thing...I've seen this same thread up on a couple diff forums about the 06 they can;'t be adjusted but when i call honda corporate and ask them which years i can replace those parts with they say we never made the fifty non-adjustable like that, it's got to be aftermarket. RIGHT!

hater

You can adjust that screw with out a special tool my ruckus has that mixture screw. Take a cheap plastic pen and gut it, take a lighter heat up the smaller end of the pen press it on the D shaped screw let it cool and there you go you now made the tool

99CBRXX

Nevermind, just gonna buy 20mm carb and intake kit from 50stunt. Special thanks to Ryan for the prompt and to the point email he sent to answer a few questions I had. By just changing the whole carb I'll be saving money because it comes w/ the air filter and everything....and it helps a fellow rider out who cares about his people. Thanks to everyone who helped w/ this situation.

LILFIFTY

we just had my buddies 06 apart tonight and i noticed the same thing on his thats stupid lol i supose if you could get it out then you could just swap the screw. the carbs are identical

Jack Cooke

i ran my stock motor all last year with the 20mm carb and intake kit from www.50stunt.com and it was a great performance upgrade! i would also get the tb cdi he sells at the same time. i did, and with it being such a bigger carb than stock the cdi helped it rev faster and higher.

99CBRXX

exactly what i had planned to do....