Need some Carb Help!

Masu · Post by **Masu** » 01 Dec 2004, 14:35

Greetings from Japan!

I'm a Canadian living in Japan, I have a self confessed bike problem, but I'm not asking for help on that front, oh no!

I have in my garage a friends bike, it is a MK2 CRM250, he is wanting to sell it.

A while back he had an aftermarket carb put on it, it ran like crap, so now, as he wants to sell it, he has asked me to put the stock carb back on, the only problem is there is no main jet, pilot jet or needle in the stock carb!!

The stock carb he had taken off the bike that he wants me to put back on the bike is the PE 31A carb on it, which I see from the specs page is for the MK1 modle....? But is should work.

I have had a bunch of 2-smokes over the years, and I have a large handful of 2-stroke carb needles, really, something like 25 or 30, so I figure I might be able to find one that is \"close\" or for that matter, as the bike has an FMF chamber and pipe on it, maybe a slightly different needle would be good.

While I'm at it, I might as well ask about jetting for this bike with the more free flowing exhaust.

I hope someone has that needle number, or I might just have to break down and order one, which would suck, as I do have so many of them.

To whomever is responsible for this site, GREAT SITE!!!

Cheers!

Phil Neal · Post by **Phil Neal** » 01 Dec 2004, 14:56

welcome...

it's gonna be handy having a contact on the forum in japan:)

http://193.116.26.75/crm250/specs.htm

this page details jets etc....

not sure what the needles do...but gets you could try richer...

Masu · Post by **Masu** » 01 Dec 2004, 15:41

Well I don't own the bike and I'm more of a road guy now, as I'm not as young as I used to be

and getting to good off-road areas from Tokyo is a bit of a hike. I do own a 95 RMX250 that is all modded out for Super Motard.

Cut my teeth on 2-smokes off-road as a kid, Honda MR175 Elsinore, or KDX175s

I've helped road racing guys get stuff from Japan before, and I would be willing to help you guys if the need arises, but don't forget shipping from Japan is not cheap.

I saw the specs page, I even went to the PDF workshop manual and downloaded that, but what I need is the number on the needle!

I put a very middle of the road needle in there, a CEJ, buttoned the bike up and on the third kick it started! Not bad, the gas in there is near on 8 months old! the bike has sat that long.

I could not see how well it runs, as it is rather loud, and it is not just after midnight here

and I don't hate my neighbours that much !!

I'll go down to the Honda dealer tomorrow (if the bike don't run right) and see if I can find out from them.

BTW the needle is the part of the carb system that actually lifts out of the main jet when you twist the throttle, so the length, thickness, and the angle of the taper define how the fuel is delivered in the midrange of the power band.

Cheers!

Phil Neal · Post by **Phil Neal** » 01 Dec 2004, 17:14

i'm probably stripping my bike this week, if it's easy to get at i'll take a look...

Masu · Post by **Masu** » 01 Dec 2004, 17:23

If you take the top off the carb, then pull the slid out, you have to remove the cable from the slide, and the little plate the holds the needle in place, then just pop the needle out and take a look.

Don't know what the number/letter combos will be, but it could be a 4 or 5 digit combo.

Cheers!

CRMR · Post by **CRMR** » 01 Dec 2004, 22:15

Hi Masu , Can you get hold of decal sets from over there for the crm mk2??

Masu · Post by **Masu** » 02 Dec 2004, 02:56

Do you mean the stock ones from Honda?

I can ask..

CRMR · Post by **CRMR** » 02 Dec 2004, 16:42

any would do , but blue stock ones would be very nice..Thanks

Masu · Post by **Masu** » 03 Dec 2004, 15:20

So I've not made it down to the Honda shop, been to busy, maybe tomorrow.

Cheers!

chrizm · Post by **chrizm** » 03 Dec 2004, 18:47

I want red 1`s please.....

Masu · Post by **Masu** » 04 Dec 2004, 06:33

So I made it down to the shop, I got color copies of the various models and color sets, I'll scan these into the computer tonight when I get a bit of time.

They seemed to think that ordering the sticker sets would be no problem at all.

The bike is still popular here.

In fact this shop has a brand new still in the crate AR

The shop owner will not sell it, he is keeping it as a collectors piece!

He has several older CRMs and he bought this one and has kept it in th crate.

Can you believe that in the shop manual and the parts list they do not list the needle!!

They will call Honda Tech support on Monday and get the info for me!

Cheers!

CRMR · Post by **CRMR** » 04 Dec 2004, 12:09

did you say \"SHOP MANUAL\".ill have one of those too ,,

Masu · Post by **Masu** » 04 Dec 2004, 13:21

OK......

BTW, how is your Japanese.......

Parts list, now they are helpful, exploded views of everything

Masu · Post by **Masu** » 04 Dec 2004, 15:22

As promised....

http://www.ablett.jp/bikes/crm250.htm

Click on the small pics to get the full sized pic.

Cheers!

chrizm · Post by **chrizm** » 04 Dec 2004, 18:58

Cool, Ive seen mine. Any idea of price??? Plus UK delivery.

Need some Carb Help!

Need some Carb Help!

you in japan