A forum for owners of Yamaha TTR250 trail and enduro bikes!

TTRfan · TTRfan

http://www.ttr250.com/Removing_carb/TTR_carb_removal.htm

petenz · petenz

had enough of the TTR carb leaking fuel... Time to put the 32mm flat slide on... the carb is 12mm shorter the the TTR carb so will make a 12mm thick block to go between the head & manifold that will move the carb/manifold back 12mm to get the inlet into the air boot... put a 42 pilot & 50 main jet in it...

pantheman · pantheman

Hi to all . I have a 93 Japan grey import in Greece (yes we are still alive and kickin) and I looking to restore my carb. I have found this page for anyone who is intersted. My problem is that they list models from 1999 to 2006. For all the parts they show total compatibility to all years models, EXCEPT the mai...

TT-R250M · TT-R250M

http://ttr250.com/Carb/TTR250_carburettor_strip_and_rebuild_guide.htm

TTRfan · TTRfan

After breaking a couple of shafts (they are only made of brass) in the past trying to free a seized choke I decided to try a different approach today and it worked so I thought I would share it. I firstly took the top off the carb to see if there was any way of freeing it from inside but I don't believe there is...

barra8 · barra8

Since it seems to be a common problem to break the float pin support mount on the TTR carburetors i thought i would add this simple fix to the problem.Thanks for reading, Cheers. The hole into the float pin support mount must be drilled on a slight angle so it does'nt hit the needle seat mount (pictured...

TTRfan · TTRfan

I have tried my hand (Trish's actually!) at doing a couple of video tutorials to help owners removing and replacing their carb for the first time. I didn't really prepare properly so there is quite a bit of mumbling and senior "stuck for the words" moments so sorry about that! Here they are. In the first...

nwrider · nwrider

i am putting on new exhaust and with out taking out the carb to check if the pilot jet i need is a 52.5 is it long or short, and the 140 main i have seen in other post is small round. can someone help. its for a 2006 us 250. thanks

TTRfan · TTRfan

http://www.ttr250.com/Removing_carb/TTR_carb_removal.htm Also, there are a couple of tutorial videos showing removal and replacement of the carb here https://youtu.be/0k1EG1LuPBc and here https://youtu.be/Nlhl9aD9wHI

TTRfan · TTRfan

The forum seems to replicate owners problems on my own bikes somehow This time the problem was a rounded out drain screw on a carb. I drilled out the damaged screw with a 3mm drill and then extracted it with a 3.5mm extractor. The new drain screw is part number 14T-14104-00 - available here Job done! B...

TTRfan · TTRfan

I have had some cold starting problems on my 325 whereby it starts but quickly dies. I raised the pilot jet size up from 48 to 50 and it seemed to make an improvement but I haven't run the TTR often enough to test it thoroughly. I came across this video this morning and, even though the guy is dealing with a TT...

mossproof · mossproof

As there are a few 325s about, and the 350 kit is selling, I thought I should begin a thread about carb jetting for the big bore engines. Those of us who have been running the 325 for a while may have noticed they run a bit rich if the jetting is left standard. Sort of the opposite of what you might expect (coun...

PetahNZ · PetahNZ

Hi, So I am a bit of a mechanical newbie (first post here too). I have a TTR250, but it stopped running. So I decided to try and clean out the carb as the first thing I've ever done to a bike (or even a car). Seemed to go alright, but after putting it all back together it has started leaking petrol out of the brea...

TTRfan · TTRfan

Yeah - I know I should know but my brain isn't working this morning

dlee22 · dlee22

https://www.ebay.ie/itm/Yamaha-TTR250-TT-R-250R-TTR-250-cc-R250-Raid-Carburetor-Carb-Stage-1-3-Jet-Kit-/332032207413

Dave White · Dave White

Bough a 2003 TTR250, whoever tried to service carb before me stripped and pinched off (with pliers) the accelerator pump nozzle jet. You cant buy this part and it doesn't show on the exploded ipc diagram. Anyone have a fix or a carb they don't need?

Dan-in-a-Van · Dan-in-a-Van

I rode the TTR to work today and she ran perfectly. I left her parked in the rain for 8 hours. When I started her up to come home, she just didn't want to run. I managed to limp about 1/4 mile, sometimes running fine, then bogging and stalling. Next only running with the choke full out before stalling again?...

DECYPHERX · DECYPHERX

So i just bought myself a 1999 ttr250 and everything works amazing, however the idle is high. I can fix this by giving it throttle real quick and letting off and then the idle goes down to normal. The cable doesnt seem to be sticking. Not entirely sure whats going on here. Theres a post on this forum that de...

yamaha42 · yamaha42

Hello all. I recently tore down my carb and cleaned it out because it had been sitting for a year and a half. I got it installed and put the bike back together, but when i turn on the pet****, gas comes out of both overflow lines. is it possible that i bent my floats?

NateGuy · NateGuy

Where can i find more detailed info on where everything goes when you're putting the bowl assembly of the carb back together?

NateGuy · NateGuy

My bike, after sitting for almost a year, would not get full power under full throttle First gear wasnt as noticable, but anything beyond that it seemed like it was choking on itself. Almost like a lope on a muscle car. I pulled the carb out, and I have a question about the accelerator pump thingy. Th...

650Katman · 650Katman

I found out why I had no tick over. Check out a previous owners handywork

mossproof · mossproof

Rebuilding a recently purchased used carb that was in quite a state and in checking the float bowl check valve (little top hat shaped brass thingy that seats into the bowl) found I couldn't blow air through it either way. Much soaking and prodding with a stick, then blowing the air line through it, and i...

Jesssss · Jesssss

Hi Guys Am trying to find factory settings for a TTR 250cc '95 OE carburetor Teikei Y30P?

widge · widge

Hi, I fitted the jets from the all balls kit, however the bike is running rough. it accelerates ok but pops through the silencer, on steady throttle it hesitates but no prblem starting. it takes a bit of time sometime for the tickover to settle down. Rob

widge · widge

Ok I messed up! Somehow I managed to damage the thread in the float bowl for the drain screw. I must have put it in cross threaded. I the drain screw itself is damaged but more worryingly is the thread inside the bowl. Any suggestion what to do? Rob

Firestorm809 · Firestorm809

Hoping for some help...again 🙄.I have stripped the carb down to give a deep clean and found there is no baffle plate in the float end. Will this cause me issues and are they available to purchase? Also any idea when carb service kits will be back in stock? Thanks in advance Matthew

widge · widge

I went to start the bike after some time of it just sitting there. pulled out the choke and it fired up and reved like mad. pushed in the choke and it died. Tried it again and twisted the throttle stop to slow it down. Now will not start at all. I have got the carb off but before I take it to pieces anything...

IanU · IanU

My Carb inlet has a white plug in it, is this normal or has something been removed from the inlet?

tom13 · tom13

Google translator. I think it's a carburetor. After being tipped to the left (I have not topped the right one yet) I can not run the foot of the engine. I do not have an electric starter. It is only after about 15-20 minutes that the motor can be started. Such a mystery. What is going on? Thank you.

Topic		Started By	Replies	Views	Last Post
	STICKY: Carburettor - pictorial guide to stripping and checking a carb (Preview) http://www.ttr250.com/Removing_carb/TTR_carb_removal.htm	TTRfan	14	16324	2 days ago by miltos
	STICKY: Alternative carbs for the TTR250 - 32mm carb ( 1 2 ) (Preview) had enough of the TTR carb leaking fuel... Time to put the 32mm flat slide on... the carb is 12mm shorter the the TTR carb so will make a 12mm thick block to go between the head & manifold that will move the carb/manifold back 12mm to get the inlet into the air boot... put a 42 pilot & 50 main jet in it...	petenz	63	43551	Jul 12, 2019 by FBRConcepts
	STICKY: Carburettor - main nozzle differences ( 1 2 ) (Preview) Hi to all . I have a 93 Japan grey import in Greece (yes we are still alive and kickin) and I looking to restore my carb. I have found this page for anyone who is intersted. My problem is that they list models from 1999 to 2006. For all the parts they show total compatibility to all years models, EXCEPT the mai...	pantheman	56	44021	Mar 13, 2019 by honda15i
	STICKY: Rebuilding a TTR250 Teikei Y30P Carburettor (Preview) http://ttr250.com/Carb/TTR250_carburettor_strip_and_rebuild_guide.htm	TT-R250M	40	30804	Jan 17, 2019 by scam
	STICKY: Freeing off a jammed choke (Preview) After breaking a couple of shafts (they are only made of brass) in the past trying to free a seized choke I decided to try a different approach today and it worked so I thought I would share it. I firstly took the top off the carb to see if there was any way of freeing it from inside but I don't believe there is...	TTRfan	6	2733	Feb 10, 2018 by katana
	STICKY: Carburettor - repairing a broken carburetor - float pin post and choke (Preview) Since it seems to be a common problem to break the float pin support mount on the TTR carburetors i thought i would add this simple fix to the problem.Thanks for reading, Cheers. The hole into the float pin support mount must be drilled on a slight angle so it does'nt hit the needle seat mount (pictured...	barra8	9	23564	Oct 25, 2017 by sledman 1
	STICKY: Removing and replacing the TTR250 carb video tutorials (Preview) I have tried my hand (Trish's actually!) at doing a couple of video tutorials to help owners removing and replacing their carb for the first time. I didn't really prepare properly so there is quite a bit of mumbling and senior "stuck for the words" moments so sorry about that! Here they are. In the first...	TTRfan	8	1919	Aug 8, 2017 by leigh
	STICKY: Carb - jetting information (Preview) i am putting on new exhaust and with out taking out the carb to check if the pilot jet i need is a 52.5 is it long or short, and the 140 main i have seen in other post is small round. can someone help. its for a 2006 us 250. thanks	nwrider	44	72462	Apr 18, 2017 by TTRfan
	STICKY: Carburettor removal and replacement (Preview) http://www.ttr250.com/Removing_carb/TTR_carb_removal.htm Also, there are a couple of tutorial videos showing removal and replacement of the carb here https://youtu.be/0k1EG1LuPBc and here https://youtu.be/Nlhl9aD9wHI	TTRfan	0	1858	Nov 13, 2013 by TTRfan
	STICKY: Carburettor - replacing a damaged carb drain screw (Preview) The forum seems to replicate owners problems on my own bikes somehow This time the problem was a rounded out drain screw on a carb. I drilled out the damaged screw with a 3mm drill and then extracted it with a 3.5mm extractor. The new drain screw is part number 14T-14104-00 - available here Job done! B...	TTRfan	15	26495	Jan 11, 2013 by goodman
	Cold starting problem (Preview) I have had some cold starting problems on my 325 whereby it starts but quickly dies. I raised the pilot jet size up from 48 to 50 and it seemed to make an improvement but I haven't run the TTR often enough to test it thoroughly. I came across this video this morning and, even though the guy is dealing with a TT...	TTRfan	2	67	3 days ago by mossproof
	The Big Bore Carb Jetting Thread - 325 and 350cc (Preview) As there are a few 325s about, and the 350 kit is selling, I thought I should begin a thread about carb jetting for the big bore engines. Those of us who have been running the 325 for a while may have noticed they run a bit rich if the jetting is left standard. Sort of the opposite of what you might expect (coun...	mossproof	8	145	4 days ago by ttr steve
	Petrol leak (Preview) Hi, So I am a bit of a mechanical newbie (first post here too). I have a TTR250, but it stopped running. So I decided to try and clean out the carb as the first thing I've ever done to a bike (or even a car). Seemed to go alright, but after putting it all back together it has started leaking petrol out of the brea...	PetahNZ	11	101	13 days ago by Jeff B
	Sanity check! Does screwing out the pilot screw richen or lean the mixture please?? (Preview) Yeah - I know I should know but my brain isn't working this morning	TTRfan	14	85	February 1st by TTRfan
	Has anyone tried a jetting kit? (Preview) https://www.ebay.ie/itm/Yamaha-TTR250-TT-R-250R-TTR-250-cc-R250-Raid-Carburetor-Carb-Stage-1-3-Jet-Kit-/332032207413	dlee22	19	296	January 22nd by Spyrious
	Accelerator pump nozzle (Preview) Bough a 2003 TTR250, whoever tried to service carb before me stripped and pinched off (with pliers) the accelerator pump nozzle jet. You cant buy this part and it doesn't show on the exploded ipc diagram. Anyone have a fix or a carb they don't need?	Dave White	6	117	January 20th by Dave White
	Rain stops play? (Preview) I rode the TTR to work today and she ran perfectly. I left her parked in the rain for 8 hours. When I started her up to come home, she just didn't want to run. I managed to limp about 1/4 mile, sometimes running fine, then bogging and stalling. Next only running with the choke full out before stalling again?...	Dan-in-a-Van	5	96	January 17th by Dan-in-a-Van
	Throttle sticking HELP (Preview) So i just bought myself a 1999 ttr250 and everything works amazing, however the idle is high. I can fix this by giving it throttle real quick and letting off and then the idle goes down to normal. The cable doesnt seem to be sticking. Not entirely sure whats going on here. Theres a post on this forum that de...	DECYPHERX	27	2678	December 31st by ttboof
	Carb issues ( 1 2 3 ) (Preview) Hello all. I recently tore down my carb and cleaned it out because it had been sitting for a year and a half. I got it installed and put the bike back together, but when i turn on the pet****, gas comes out of both overflow lines. is it possible that i bent my floats?	yamaha42	148	67544	November 27th by Blacknight
	More detail on rebuilding the carb? (Preview) Where can i find more detailed info on where everything goes when you're putting the bowl assembly of the carb back together?	NateGuy	6	258	November 23rd by NateGuy
	99 250 (Preview) My bike, after sitting for almost a year, would not get full power under full throttle First gear wasnt as noticable, but anything beyond that it seemed like it was choking on itself. Almost like a lope on a muscle car. I pulled the carb out, and I have a question about the accelerator pump thingy. Th...	NateGuy	4	175	November 2nd by TTRfan
	No idle. Pop and stop (Preview) I found out why I had no tick over. Check out a previous owners handywork	650Katman	5	248	Jul 25, 2019 by ttr steve
	Float bowl check valve (Preview) Rebuilding a recently purchased used carb that was in quite a state and in checking the float bowl check valve (little top hat shaped brass thingy that seats into the bowl) found I couldn't blow air through it either way. Much soaking and prodding with a stick, then blowing the air line through it, and i...	mossproof	3	438	Jul 21, 2019 by mossproof
	Factory Settings carb (Preview) Hi Guys Am trying to find factory settings for a TTR 250cc '95 OE carburetor Teikei Y30P?	Jesssss	1	319	Jun 11, 2019 by mossproof
	all balls jets (Preview) Hi, I fitted the jets from the all balls kit, however the bike is running rough. it accelerates ok but pops through the silencer, on steady throttle it hesitates but no prblem starting. it takes a bit of time sometime for the tickover to settle down. Rob	widge	5	303	Jun 5, 2019 by ttr steve
	damaged thread (Preview) Ok I messed up! Somehow I managed to damage the thread in the float bowl for the drain screw. I must have put it in cross threaded. I the drain screw itself is damaged but more worryingly is the thread inside the bowl. Any suggestion what to do? Rob	widge	9	348	May 3, 2019 by mossproof
	Carb Baffle Plate (Preview) Hoping for some help...again 🙄.I have stripped the carb down to give a deep clean and found there is no baffle plate in the float end. Will this cause me issues and are they available to purchase? Also any idea when carb service kits will be back in stock? Thanks in advance Matthew	Firestorm809	3	269	Apr 27, 2019 by Firestorm809
	More carb woes (Preview) I went to start the bike after some time of it just sitting there. pulled out the choke and it fired up and reved like mad. pushed in the choke and it died. Tried it again and twisted the throttle stop to slow it down. Now will not start at all. I have got the carb off but before I take it to pieces anything...	widge	6	372	Apr 7, 2019 by TTRfan
	Carb inlet ‘plug’ (Preview) My Carb inlet has a white plug in it, is this normal or has something been removed from the inlet?	IanU	3	274	Apr 1, 2019 by Kaos
	Do not start after tipover (Preview) Google translator. I think it's a carburetor. After being tipped to the left (I have not topped the right one yet) I can not run the foot of the engine. I do not have an electric starter. It is only after about 15-20 minutes that the motor can be started. Such a mystery. What is going on? Thank you.	tom13	9	741	Oct 31, 2018 by tom13
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