[rudiger]

Will 120 main and 45 pilot work with the stock 06 needle? Or do you absolutely need the 03-05 or power up needle. New to CRF's, looking to un-cork, but did not want to mess with needle. Not very good with carbs.

[Aussiecrf230]

Hi rudiger and welcome to the site.
The early and later needles use the same profile, just the later needle has only two adjustments compared to 5 of the earlier needle.
Use the bottom position on the 2006 needle as is same as middle clip of 03-05 needle.
The 120 main and 45 idle should still work.

If you find it runs a bit lean or rich between say 1/4 to 3/4 throttle and neither clip position doesn't give enough adjustment you may have to get the earlier needle. You can shim the clip with a washer if it is close.

We can walk you through this if you need to change the needle out.
Have a look at Rick's site with a detailed how too.
https://www.rickramsey.net/CRF230Fcarb.htm

Can you post what elevation and temperatures you ride at and we should be able to let you know about the clip position/ needle selection.

[rudiger]

Thanks for the info Ray. Riding from sea level to 2000'

[Aussiecrf230]

If you are using the standard exhaust with the baffle either drilled(a bit quieter) or removed you should be able to use the needle you have in the bottom clip.
If it needs to be a bit richer you can put a small well fitting washer between the circlip and the slide to lift the needle slightly. Make sure when it is assembled the washer doesn't move. Mind you I have seen the circlips fall out as weren't tight on the groove, never to be seen again.

I would recommend an easily adjusted fuel screw as there would be small changes needed when you ride up to 2000 ft asl. I find I have to adjust winter to summer just so it idles smoothly. Makes it better when riding very slowly as you are on the idle jet then on first part of the needle then back on the idle jet.
Make sure you get the old o'ring out and assemble the new idle screw as follows. First the spring on the idle screw, then the washer and finally the o'ring. The washer stops the o'ring being chewed up by the spring. A little grease on the o'ring helps. Tighten gently till it seats then back out two turns as a starting point to adjust.

I hope the info the Rick has on his site helped. If you do change the needle just make sure the screwdriver fits perfectly on the screw locking the needle down as they are always extremely tight. We often replace it with a small allen headed bolt. Remove or replace the circlip inside a plastic bag - they tend to launch into unknown space if not restrained by the bag.

Let us know how you go and when you have it setup for your bike then post back in this post as well as here https://www.crfsonly.com/forum/viewtopi ... 11&t=13473.

Might help others in future.

If you need any help with the carby post back here or if something else just start a new thread.

[ghweeks]

I'm in need of some assistance for a 2006 Honda 230F. I have seen many forums mentioning the removal of the air-box baffle, uncorking the exhaust and re-jetting the carb. My 2006 has a stock #102 main and a #42 pilot. My question is most forums state that the stock main is a #110. I'm curious if going from a 102 to the recommended 120 will be too much of an increase. Any assistance would be appreciated.

[Aussiecrf230]

Hi ghweeks and welcome to the site.

The 230 was delivered by Honda with the 102 main and 42 pilot.
Where anyone thought the 110 main is standard is just wrong unless in very cold climate.

I agree that it seems a big jump to go from a 102 to a 120 but once the uncorking is done the bike responds well. The 45 pilot will be required and some have found a 48 pilot was needed.
Some only drill the exhaust baffle as removing it can be quite loud.

Obviously depending on where you ride and the height above sea level will affect the jetting. You tend to be leaner the higher you go.
Sea level to say 2000 feet may require adjustment of the fuel screw to keep a nice idle but jetting changes would have to be made if you rode at say 5000 feet.

[ghweeks]

Thanks so much for the information. I'm between 500 & 900' feet above sea-level. I'm installing a Pro-Circuit T-4 pipe, #120 main & a #45 slow jet. I also purchased a 2003-2005 needle and have been told to install the clip in the #3 position. I hope this combination will work. If you have any additional thoughts, please let me know. Thanks again for the help.

[Aussiecrf230]

Make sure you use a JIS screwdriver to undo any screws. Do not use a phillips.
Expect the screws to get the needle out to be tight.
Take your time and make sure it is a good fit.

This jetting would be a good starting point.
I would get an adjustable/ longer fuel screw so you can make small changes to idle mixture. Easier to change when doing everything else.