CRF's Only Forums

I have done a little searching and cant find what I am looking for.

Heres the issue-

Recently moved from SOCAL to Shreveport, La. My wifes 230 starts cutting out around half throttle. Seems like it is hitting the rev limiter, but thats not it. It also has a heck of a backfire now. Nothing has been changed since the move. I bought it in SOCAL with a big gun exhaust already installed, not sure about any jet sizes. I never had to tweak it. I'm thinking a carb issue, possibly needs a different main jet. I also found something online where someone had something similiar, they found the timing off by a tooth.

I gonna tear it apart tomorrow. Any advice is appreciated!

Thanks,

jetmech

This is most likely a real easy one.
First,anyone who found the timing off a tooth either did it themselves or someone else did it for them.
This bike definetly has a carb issue,a too lean one. Having a free flowing exhaust and stock jetting make for a for certain problem. If the jettings stock it's just wanting fuel it can't get, so it heats up,sags,and couldn't be less interested in running.
You need to be about here:
Pilot Jet: 48
Main Jet: 132, Honda part # 99113-GHB-1320
Needle: power up, Honda part #16012-KPS-921
Needle Clip Position: middle
The CRF's Only/Kouba fuel screw is very nice to have and makes fuel screw adjustments a snap. Start about 1 and 1/2 to 1 and 3/4ths out.
If the other jets/needle are installed, air box mod complete, you are looking to tune out the decel popping.
A 14 tooth countershaft sprocket is a near requirement for these bikes. Even a 15 if you ride mostly wide open desert.
They are geared so insanely low stock that first is a jerky, unuseable mess. Your bike will run a lot better, you'll be able to actually use first, and it'll still climb hills great.
Be sure to get a shop or Clymer manual, these bikes are very easy to work on. They lose power when the valves get out of adjustment, and getting them into adjustment is a snap . Doug

Thanks! I had pretty much dismissed the timing thing, but figured I'd through it out there.

I will let you know what I find out.