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Just came back from my first ride on this bike .


All I can say is less is definitely more.

Laughed soo much at my buddys trying to keep up in the wet and muddy woods here in the UK on there 450's .

I think i'm going to like this bike

Is it still stock, or have you done any mods yet?

It's still stock thats what makes it even funnier.

Will be ordering some jets tomorrow and opening the airbox next weekend ,just wanted to ride it stock to see how much the mods would change it

Your buddies aren't gonna want to ride with you anymore.

Especially once you open it up a bit...

~
What would you advise on jetting
I am just going to open up the air box take the flametrap out and fit twin air filter.
I don't think need mess with the pink wire and dont want it any noisier.

Most riding done at 0-1000m above sea level

jerrypc69 wrote:~
What would you advise on jetting
I am just going to open up the air box take the flametrap out and fit twin air filter.
I don't think need mess with the pink wire and dont want it any noisier.

Most riding done at 0-1000m above sea level

Do that and get the JD Kit. Makes things easy.

If you just want to do it on your own do this:

Change the needle to the 4th clip.(stock 2nd clip)

Change the main jet to a 158.(stock 130)

Change the pilot jet to a 42.(stock 40)

Open fuel screw to 2 turns from all in.

Makes the bike run way better, start easier and makes a bunch more power.

Thanks

I will try that next week

He ain't kidding Jerry. Those carb changes will make a big difference.

Starts much easier. 10-20 secs with the choke on, then idles almost like it had an EFI system.

I'm running larger main jet (162) because I have opened up the airbox and am running a White Bros E2 exhaust w/o the spark arrestor.

Right jets ordered and on there way

purchased the filter today

time to get out in the garage and start stripping the crf


now where is that dremil

Gonna start work on mine today! Thanks to the help from ~ it should be a breeze. I plan on basically doing exactly the same mods as you....except i'm adding the smog block off kit also!
Happy riding

I have been advised to do the AP mod do you think its worth it considering the rest of the mods I am going to do

jerrypc69 wrote:I have been advised to do the AP mod do you think its worth it considering the rest of the mods I am going to do

It's easier to do while you are in there. And its easy to just do the o-ring part (that's all most of us do).

I have the whole mod on PDF. PM me with your e-mail and i'll send it to you.

Thanks ~

will this do the same job as the boyesen accelerator pump cover

jerrypc69 wrote:Thanks ~

will this do the same job as the boyesen accelerator pump cover

The AP mod will eliminate the off idle bog.

The Boyesen AP cover is designed to refill faster than the stock cover. The fuel supply for the AP is in the cover.

If you are constantly pumping the throttle, you can use up the fuel supply faster than the stock cover can refill and thus not get consistent shots of fuel.

The Boyesen cover is designed to fix that. I think only MX racers would ride in such a manner to need the Boyesen.

Thanks again ~ your a wealth of information

I did a little searching on this site which has educated me lots on the subject