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May 17th, 2017, 11:50 AM   #31
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Used Keihin FCR-MX 41 carb from 2004 KTM 450 SX | eBay

sorry but the hot start is below the choke.. the above is a link.

yet I just did a search of ebay under 'keihin FCR carb' and they are all red below black except one!

now I'm worried...

BTW, the bike would probably not start without choke and would not run with neat air pouring in if it did.

red headers etc.

taffy

Last edited by Taffy; May 17th, 2017 at 12:03 PM.
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May 17th, 2017, 11:55 AM   #32
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I Ride: 2001 FE400E
FCR from CRF450

I bought one from a 2004 CRF450 and it has the RED hot start above the black choke. I got the hotstart cable with mine. Found diagrams for it showing that on that model the hotstart is on top.

Can't seem to fit it on my 400. I cut back the intake boot 6mm, moved the overflow off the bottom. Still hits the starter motor, and the fuel inlet is right on the exhaust manifold. Even turned the fuel inlet on the lathe to give it another 1/8 inch or so. Even tilting the carb I can only get about 1/8 -1/4 inch away from exhaust. That gives problems with the throttle cables though.

I think with any larger cc Berg with the taller cylinder it would work fine.
Decided it is more hassle than I need and put the DelOrto back on it. Runs good enough for me.
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May 17th, 2017, 11:59 AM   #33
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interesting GWS1....

I always insist people stick with the Mk2 MX carb if they are going to try and look for one. come to think of it there have been one or two touching starter motors on the 450s but I can't recall if they were Honda CRF proddie carbs or not?

a look through ebay on the above link is quite revealing; there are both on there!

cheers

Taffy
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May 17th, 2017, 12:00 PM   #34
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https://www.crfsonly.com/howto/keihi...-start-nut.jpg
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May 17th, 2017, 12:05 PM   #35
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KEIHIN FCR MX 41 FLATSLIDE CARB LC4 DUKE KTM CRF YFZ LTZ TRX 450R DRZ DRZ400 KXF | eBay

this one appears to have the hot start above and on a remote?

I've never noticed before!!!! damn...

Taffy
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May 17th, 2017, 12:10 PM   #36
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so its definitely the hot start then lol.

this carb seems stiff to operate. i was going to strip and clean it as I'm stuck in my crappy room at work with no tv and nothing better to do, but I've no allen keys and one screw is stuck. which do you remove the top or the bottom to dismantle?

I've given it a good clean on the outside and now my room stinks of petrol, sure the cleaner will be thrilled...

im also down a toothbrush.
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May 17th, 2017, 12:13 PM   #37
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Still doesn't work but it's clean. The red Honda bits have gone too!



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May 18th, 2017, 01:46 AM   #38
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Hi

The FCR is one adventure that took me a looooot of hours, let me give you some ideas to start with:

I've cut the bottom of the carb, it's not necessary with the new rubbers, but I've only found it after. Anyway its not doing anything important there.

I've used one aluminium intake a the newer intake rubber of the 450, it will give you an angle for the carb to clear the starter. Tried a lot of things, even invented some rubbers of my own, but this is the way to go.

Used the older rubber boot, it's easier to take it out and install it (you will be doing that a lot ) and also gives you a better angle for clearance of the starter.

Here are some pict


ZAGA
Attached Thumbnails
Keihin arrived.-fcr_intake.jpg   Keihin arrived.-fcr_intake_rubber.jpg   Keihin arrived.-fcr_bottom.jpg  
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May 18th, 2017, 01:47 AM   #39
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More pict
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Keihin arrived.-fcr_boot.jpg   Keihin arrived.-fcr_boot_2.jpg   Keihin arrived.-fcr_clearence.jpg  
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May 18th, 2017, 01:49 AM   #40
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My carb
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Keihin arrived.-my_fcr.jpg  
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