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

TTRfan · TTRfan

http://www.ttr250.com/Removing_carb/TTR_carb_removal.htmhttps://youtu.be/0k1EG1LuPBc and here https://youtu.be/Nlhl9aD9wHI Totally TTRs sell a su...

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...

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...

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?

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.

mmwain · mmwain

Can't find this one anywhere in the 5 pages of carb posts so here goes... Bike has a very intermittent fault, will run perfectly for a long time then suddenly stops completely or misfires on mid/high throttle. The problem started after stripping the bike for frame paint and valve guide seals, but did...

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...

ttrtim · ttrtim

Hi, Hopefully there's someone out there who's TTR'd the Pyrenees! Myself and a mate are going in a months time, both ride standard TTR250's, so the question is, will we need to re-jet? Going to be 10,000 feet max. Appreciate any help/light anyone can shed please. cheers, Tim

Forgorin · Forgorin

So, I put on a new muffler over the weekend and took the bike for a spin. Wow! More grunt! I feel like she has more torque now (able to change gears earlier at lower speeds). I am hearing a bit of backfire when decelerating at higher RPMs. I am unsure if this is because it is running lean or rich (haven't...

FFBeefcake · FFBeefcake

I recently inherited a 2004 ttr250 from a fellow firefighter who passed away. The bike was given to me without a carb. It is a project bike with intention of eventually making it street legal as a tribute bike to continue my buddies plan. I've looked to buy the teikei y30p but am unable to find one online....

tom13 · tom13

Google translator. Hello. I installed a new original carburettor and kickstarter does not start. Is it possible in the new carburettor that the fuel level is bad?

Benjah · Benjah

Anyone know where to get hold of one of these? Haven't had much luck with Mr Google. Cheers

z1g · z1g

Hi Guys, I thought i had my idle screw set right. When cold, fires up straight away, ocasonially use choke for a couple seconds. Idles fine, sounds fine not revving hard. Noticed tonight when i went for a ride, that coming into intersections/round abouts. Anytime i pulled the clutch in it seemed to be o...

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.htmhttps://youtu.be/0k1EG1LuPBc and here https://youtu.be/Nlhl9aD9wHI Totally TTRs sell a su...	TTRfan	6	15490	September 4th by Indigo
	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	34335	July 12th 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	39918	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	29806	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	2594	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	22699	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	1520	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	65502	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	1786	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	25378	Jan 11, 2013 by goodman
	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	5	59	2h ago by TTRfan
	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	94	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	165	July 25th 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	364	July 21st 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	233	June 11th 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	232	June 5th 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	268	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	198	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	300	Apr 7, 2019 by TTRfan
	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	145	61594	Apr 1, 2019 by WackoJacko
	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	210	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	682	Oct 31, 2018 by tom13
	Engine stops on hard accelleration (Preview) Can't find this one anywhere in the 5 pages of carb posts so here goes... Bike has a very intermittent fault, will run perfectly for a long time then suddenly stops completely or misfires on mid/high throttle. The problem started after stripping the bike for frame paint and valve guide seals, but did...	mmwain	9	702	Sep 24, 2018 by ttboof
	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	24	2533	Sep 3, 2018 by ttr steve
	Do I need to re-jet for Pyrenees? Anyone been?! (Preview) Hi, Hopefully there's someone out there who's TTR'd the Pyrenees! Myself and a mate are going in a months time, both ride standard TTR250's, so the question is, will we need to re-jet? Going to be 10,000 feet max. Appreciate any help/light anyone can shed please. cheers, Tim	ttrtim	12	1145	Aug 20, 2018 by dlee22
	New muffler does carb need adjusting? (Preview) So, I put on a new muffler over the weekend and took the bike for a spin. Wow! More grunt! I feel like she has more torque now (able to change gears earlier at lower speeds). I am hearing a bit of backfire when decelerating at higher RPMs. I am unsure if this is because it is running lean or rich (haven't...	Forgorin	12	876	Aug 6, 2018 by Forgorin
	Bike without a carb Carburetor (Preview) I recently inherited a 2004 ttr250 from a fellow firefighter who passed away. The bike was given to me without a carb. It is a project bike with intention of eventually making it street legal as a tribute bike to continue my buddies plan. I've looked to buy the teikei y30p but am unable to find one online....	FFBeefcake	1	521	Jul 8, 2018 by mossproof
	Strange fuel level (Preview) Google translator. Hello. I installed a new original carburettor and kickstarter does not start. Is it possible in the new carburettor that the fuel level is bad?	tom13	5	635	Jun 29, 2018 by tom13
	Source for #52 pilot Jet (Preview) Anyone know where to get hold of one of these? Haven't had much luck with Mr Google. Cheers	Benjah	1	445	Jun 28, 2018 by z1g
	High Idle when RIDING. (Preview) Hi Guys, I thought i had my idle screw set right. When cold, fires up straight away, ocasonially use choke for a couple seconds. Idles fine, sounds fine not revving hard. Noticed tonight when i went for a ride, that coming into intersections/round abouts. Anytime i pulled the clutch in it seemed to be o...	z1g	38	6642	Jun 12, 2018 by z1g
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