2000 yamaha wr400f carb replacement?

[tater1994]

HI you guys, new to this website. but i truly hope someone can help me. i just recently (yesterday) bought a used 2000 yamaha wr400f. i was told all it needed was to be put back together (plastic was off for "painting") and that it needed a float.....well. that was not completely truthfull... because when i got it home and really checked out the carb that was in the bag...its missing ALOT of pieces....both the pull levers for chock and other. the bottom bowl looks almost...RUSTED..its Allllll pitted up. and the little cover that goes on the bottom of the bowl is screwed. so clogged.looks like they let it sit in battery acid for a year.. missing the top plate. no float. nothing that goes with the float. and im not sure what the inside looks like..probably terrible.. what i am wanting to know is can i use a wr250f carb and just use the jets from mine? i know i can use the 426f carb. but i cannot find one for less than 500$ :(. and i dont have alot of money to work with. 250 is pretty much is right now. i also just got a 97 rm250 2 stroke. and i love it. but i REALLY REALLY want to ride this 400. but for the life of me...i CANNOT find a carb online ANYWHERE....unless its a crazy amount..now i can get a yamaha 400 GRIZZLY carb for like 60 bucks!! will this thing work??? the guy i got the bike from said it would lol....but im not sure. THANKS SO MUCH FOR ANY INFO. have a great day

[FORMA MOTO]

2005 wr450f carb is the easiest replacement

[William1]

....or you can send the carb off to James Dean or ZipTy or Tokyo Mods and have them do a full service, no bling rebuild.

[tater1994]

how much would they charge to rebuild it. it needs some parts as you can see. the bowl and the bottom little plate on the bowl is ruint

[tater1994]

hey guys. i have a chance to get a wr250f carb. my 2000 wr400f needs a carb. and the carb looks the exact same as the junk one i have. is it possible to make the 250 carb work for my 400? can i just swap the jets? thanks alot

[William1]

49 minutes ago, tater1994 said:

how much would they charge to rebuild it. it needs some parts as you can see. the bowl and the bottom little plate on the bowl is ruint

You'd have to contact them but I am sure they would give you top cost (I would) until they see your carb and can inventory what it needs and the level of effort.

[FORMA MOTO]

1 hour ago, tater1994 said:

hey guys. i have a chance to get a wr250f carb. my 2000 wr400f needs a carb. and the carb looks the exact same as the junk one i have. is it possible to make the 250 carb work for my 400? can i just swap the jets? thanks alot

That's a 37mm carb.

You want a 39 or a 41mm

[tater1994]

where do you measure it at? i measured the outside diameter strait across on the carb i have. engine side. and it was 47mm. or 1 inch 7/8  im not sure where to measure it at

[FORMA MOTO]

www.sudco.com

http://www.pbase.com/jdjetting1/keihin_fcr_manual_views&page=all