CRF250X airbox and jet

DAMN maintenance and repair thread; including Farkle Fests! :boohoo:
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Laoch
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Re: CRF250X airbox and jet

Post by Laoch » Wed Mar 29, 2017 7:15 pm

+ 1 or is it +2 ?? on the JD Jet kit.

YouTube videos :deal:

I pulled the carb on my DRZ and did the JD Jet kit. Watch enough videos and it's easy.

Or bring out to Jim's in a couple of weeks. Get some help before the booze starts flowing.
Bruce
2016 Freeride/'03 KLX 400/'13 CB500X

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beejaytee
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Re: CRF250X airbox and jet

Post by beejaytee » Wed Mar 29, 2017 8:00 pm

Getting the carb out of the x is easiest if you swing the subframe up and remove the top shock bolt. Juddspaintballs and I did it a few weekends ago on his buddies 250x. They didn't leave much room in those bikes.


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J&J
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Re: CRF250X airbox and jet

Post by J&J » Wed Mar 29, 2017 8:19 pm

We were able to get at the needle from the top & swing the carb to get the bowl off on the 250r without removing the carb, per JD's instructions.
The X might be different, I'm not sure since it has a different air box.

Sturmz15
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Re: CRF250X airbox and jet

Post by Sturmz15 » Thu Mar 30, 2017 8:07 am

Thanks for your input here guys. Its been about 15 years since I have owned a bike and back then my dad did most of the work on our bikes. My biggest concern was swapping out the needles. Youtube and the forums I have seen pretty much confirm that i'll need to remove the carb. I just want to learn how to do things the right way rather than wing it, the internet is full of professional "opinions". I am also brand new to DAMN riders and always looking to meet riders and get out on the trails when my kids aren't dictating my schedule.

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juddspaintballs
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Re: CRF250X airbox and jet

Post by juddspaintballs » Thu Mar 30, 2017 5:17 pm

I learned to work on bikes, cars, trucks, big trucks, small engines, etc. just by doing it and occasionally having a little guidance from the Internet or Youtube. Since I was in my teens, I started asking my parents for tools for birthdays and Christmas and now I'm pretty well stocked. It's not hard to remove the carburetor, but it does require a good deal of work on the CRFX to get to it. The work isn't difficult. Take your time, be precise, and take notes (mental, written, or photographs) about how things go back together. I keep a note pad in the garage and write things down as I take them apart on major projects and I like to put masking tape on wires and hoses as I disconnect them. I number the tape and write the number in the note pad as I take stuff apart. For reassembly, I simply reverse the order on the note pad. It's difficult to forget to put something back together if you follow your notes as long as you didn't forget to write something down as you took it apart.
Jed Gregory
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Marylander
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Re: CRF250X airbox and jet

Post by Marylander » Fri Mar 31, 2017 8:16 am

juddspaintballs wrote:
Thu Mar 30, 2017 5:17 pm
Take your time, be precise, and take notes (mental, written, or photographs) about how things go back together.
I definitely agree here. Besides doing similar things to Jed with using tape to mark hoses/electrical connections and taking notes/photos I also keep different sizes of ziplock bags and a sharpie in the garage to put parts into. I'm a really disorganized type but, in spite of that limitation, doing this stuff has allowed me to completely break down a kx250 and then successfully put it back together, replace the motor in a Z1000, and bunches of other, smaller projects. That said, I pay someone to do the valves on my cbr1000rr as that's too many valves, cams, etc for me to keep track of. I'm only willing to do valves on a one cylinder. ;)

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OneFaller
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Re: CRF250X airbox and jet

Post by OneFaller » Wed Jun 14, 2017 8:22 am

Wingfixer wrote:
Wed Mar 29, 2017 11:39 am
Beat it to fit, paint it to match. :shrug: I never heard any complains. :lol2:
My dad's saying was: "Cut to fit, paint to match. When in doubt, apply more force: if it breaks, it needed to be replaced anyway."
Disaster Racing

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OneFaller
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Re: CRF250X airbox and jet

Post by OneFaller » Wed Jun 14, 2017 8:39 am

beejaytee wrote:
Wed Mar 29, 2017 8:00 pm
Getting the carb out of the x is easiest if you swing the subframe up and remove the top shock bolt. Juddspaintballs and I did it a few weekends ago on his buddies 250x. They didn't leave much room in those bikes.
IMPORTANT NOTE ABOUT THE CRF250X

make sure that you get the air snorkel on correctly. if you don't, you'll get unfiltered air/dirt in the intake and you'll be replacing your valves. AMHIK.

I cut the top of my airbox, jetted it, redid the suspension to support my fat arse. It's a strong running bike now.
Disaster Racing

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anotherguy
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Re: CRF250X airbox and jet

Post by anotherguy » Wed Jun 14, 2017 8:31 pm

As a guy whose been paying the bills turning wrenches for over 30 years I do not recommend messing with the airbox. I do however recommend the JD Jetting kits referenced above. Keep clean filters in the airbox and good gas in the tank and the bike will be reliable fast and easy to maintain. I always buy two filters (OEM for me) and keep one serviced and ready in a plastic bag. Takes but a few minutes to swap out and top ends last a lot longer.

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