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

gpower07 · gpower07

OD is 36MM and 44MM. is that correct? mine still running. and i don't want to take it out. in case someone knew the size here. that what i found. https://www.ebay.com/itm/144736843420?mkevt=1&mkpid=0&emsid=e11051.m43.l1123&mkcid=26&ch=osgood&euid=82630cbd5e85...

Nomada_Firefox · Nomada_Firefox

Just it, my 2005 original battery, a lead-acid battery is dying, it recharges with a battery charger but at 15 days, it lost almost all the power. Any suggestions about a battery model? I was checking in a official Yamaha store and the original has this number 4UC821000100 , can anybody tell me if it is t...

James B · James B

Hey folks, I picked up this 07 TTR with Motard wheels on it a year and a half ago. Cut to 6 months later and the bike is stolen from my apartment building. C'est la vie. It's gone, I thought. A call from the cops a few weeks ago however had my TTR back in my apartment garage again (locked this time!). Problem i...

ttboof · ttboof

Hi got an eBay delivery today and fitted a set of blue stubby pivot levers to the ttr will post pics and feed back soon Ran out of mods so tried a bit of bling -- Edited by ttboof on Friday 20th of September 2019 10:19:40 AM

meadus69 · meadus69

Hi guys, just got my 2005 Up and running after a tidy up in the workshop. Starts lovely and runs well from cold. Left it to warm up to change the oil but once warm it smokes quite a bit, puffs as it is revved I would say white or blue. Im not sure how old the fuel is but I will change this. was thinking of doing a co...

sammyttr · sammyttr

my banjo bolt on the clutch cover under the exhaust is just spinning won't tighten up at all, gutted any knows best way to fix it easily and cheapily.

meadus69 · meadus69

I am finishing up re-assembling my 2005 after an overhaul. connected the rear indicators back up and the rh one works fine but the lh flashes too fast. front indicators all connected as they should and everything lighting up, just lh is flashing much faster. dodgy flasher relay? I have some LED re...

ghardison · ghardison

Ok I have removed and cleaned the carb 4 times. I know what you all are thinking and I now too have the benefit of experience. "dude you should have cleaned the tank as one of the first steps to getting a bike that has been sitting with fuel in it for 5 to 6 years!!!" The tank is full of crap! I have a 2006 TTR blu...

ghardison · ghardison

Hey guys hope all is well and happy new year! So my TTR is running leaner than an Olympic marathoner. White spark plug and no carbon build up. New spark plug. The header is glowing red yadda yardda. This is a 2005 TTR 250 US/CA model. I am once again cleaning the carb and checking jet sizes. I will send t...

mmwain · mmwain

Hi, just brought a spare engine from a UK breaker who'd totally forgotten where it came from. It's not got an engine number, just 4GY stamped on the boss, doesn't appear to have been messed with and no sign that the cases have been replaced unless it was a very long time ago (also unlikely at £2K+ a set!)....

meadus69 · meadus69

Hi guys, Any idea what i am missing that attaches to these fixing points on the LH side of the frame? Im presuming the lower mounts are for a side stand switch that someone has removed? Thanks Tom

RAID · RAID

good evening I'm in need of advice on what might be affecting oil consumption on my '94 raid. when I put it to work it doesn't smoke, every now and then when I accelerate it sends out a "jet" of smoke. What could be causing the excessive oil consumption? thanks

brindabella · brindabella

Hi everybody, the TTR250 is a reliable bike, but like every bike model in manufacturing history, there are areas that need watching - namely nuts and bolts that are prone to loosening (or to freezing in place) or to being stripped or mangled - eg often on parts subject to heat or vibration stress or join...

BikerMat · BikerMat

Hi Guys, I have just recently gotten my carb back together and on the bike - Reason for taking it apart was that it would bog down and die when applying throttle. I've cleaned the jets and put in a new float bowl seal and diaphram o ring seals (Old ones were flattened, diaphram is in good condition). I follo...

ghardison · ghardison

Ok so today I passed some major hurdles on the TTR 250. I finally got the check valve in the mail - inserted it - and finished the carb rebuild. Reinstalled Carb, added fuel and the engine started immediately. It was truly a proud moment. I even started to think well "just maybe". I had halted any ot...

ghardison · ghardison

So all-balls carb rebuild kit didn't provide everything - what size O ring goes on the pilot screw? The one provided is too small. I see I am not the only person to run into this issue - sorry I couldn't find that thread this morning to ask this there. Apologize if I am junking up the place. How do I sear...

ghardison · ghardison

I recently tore into a major carburetor repair on a non running 2005 TTR. Took several ultra sonic soaks and a deep soak in some Berrymans. Replaced everything that was included in the all balls rebuild kit. Waiting on diaphragm and check valve then hopefully she'll come back to life. In the meantim...

sslrgrt · sslrgrt

Does anyone know where I can get rear foot pegs for the TTR250 Raid. Apparently they are now required by the MOT if your seat can take 2 people.

glebe74 · glebe74

Hi all, Two weeks ago my blue TTR (2003) was working fine: I did a 135k on/off road trip, parked up and when I went back to the bike a day later it wouldn't start. The starter would turn but there was no spark. Being a lazy sod I took it to my local Yamaha dealer. They did static tests and said the stator was duff...

Dan-in-a-Van · Dan-in-a-Van

I took the TTR down to the local tyre fitters today, to get a new front tyre. Unfortunately they couldn't get the wheel off. The forks on my bike I think are 1998 YZ forks. When the spindle is unscrewed from the left fork leg, the spacer on that side is seized to the spindle. It reaches a point where all its do...

TTRfan · TTRfan

I am stripping an engine and the sprag clutch was really jammed. If you look at the way the bearing assembly has been bent, this sprag kicked back big time! Can't believe it wasn't giving out audible warning signals to the owner well before this happened. I have found the best way to safely unjam the s...

TTRfan · TTRfan

Interesting video. The guy (can't find his name) has built his own powder coating setup very cheaply and, in this video, coats some TTR parts including the barrel from a 350 kit

dlee22 · dlee22

Hi there, has anyone noticed during a rebuild that there top two piston rings are positioned closer together than expected? I noticed this in both the 325 and 350 I split recently but 100% know the 350 was spot on with spacings some 200 miles ago? The 325 had had more miles on and were closely aligned. T...

Rossyboys · Rossyboys

Just for information when you hear that dreaded "Clunk" sound when you stop the engine and your fears of having to replace the Sprag Clutch, its not that harder job. The sound was getting louder and more often when the engine was stopped. 2001 model with 16000km, we are the 4-5 owners looking at the bik...

TerryK · TerryK

Hi all, got an issue with my blue tank speedo drive, yes the speedo does work but when the dike is in the air & I turn the front wheel backward it locks up, I removed the speedo drive & inspected, cleaned it up. the worm gear or pinion had end float & I believe this is causing the lockup. To me it s...

Spyrious · Spyrious

Hello! It seems that the coil lead on my ttr has some internal damage.Sometimes when unplugging and putting it back i get misfires. I have cut a few mm of the end of the lead and screwed the plug cap back in and it cured the problem.But i already had to do it twice now. Is it possible to remove the lead from the...

lybker · lybker

Dear all I am new to the forum, but post here as I hit a strange issue yesterday. I have fitted a TTR 250 engine in my daughters quad bike and have fitted a speeduino ECU and electronic fuel injection. During the mapping phase We did a number of high load runs (2-3 hours) on the dyno to ensure fueling is co...

tripodtiger · tripodtiger

I had mine in and out a few times over the past week. I figured that a video could be useful for others.

Marktheaussie · Marktheaussie

Hey guys, Ran into some trouble with my 93 TTR250.. had to weld my stator cover and when assembling back together I accidentally ran the cables outside the manifold. bike ran for a while but then wires got rubbed by my chain and it stopped. took me a while to track it down, in the meantime I’ve replaced the...

HarleyRigid · HarleyRigid

Just wanted to get an opinion from you guys... I need to put a clutch kit into my '06 TTR250. There are 2 on ebay that have caught my attention. One is Kevlar and the other is cork. Both are fairly close in price, just wondering on the pro's and cons of each. Also if you know of a cheaper or better kit I would app...

Topic		Started By	Replies	Views	Last Post
	2006 TTR Carburetor size (Preview) OD is 36MM and 44MM. is that correct? mine still running. and i don't want to take it out. in case someone knew the size here. that what i found. https://www.ebay.com/itm/144736843420?mkevt=1&mkpid=0&emsid=e11051.m43.l1123&mkcid=26&ch=osgood&euid=82630cbd5e85...	gpower07	2	724	Mar 10, 2023 by TTRfan
	My TTR250 original battery is dying, what type of replacement do you recomend? (Preview) Just it, my 2005 original battery, a lead-acid battery is dying, it recharges with a battery charger but at 15 days, it lost almost all the power. Any suggestions about a battery model? I was checking in a official Yamaha store and the original has this number 4UC821000100 , can anybody tell me if it is t...	Nomada_Firefox	5	1067	Mar 2, 2023 by tom13
	Got back my stolen TTR. With some modifications... (Preview) Hey folks, I picked up this 07 TTR with Motard wheels on it a year and a half ago. Cut to 6 months later and the bike is stolen from my apartment building. C'est la vie. It's gone, I thought. A call from the cops a few weeks ago however had my TTR back in my apartment garage again (locked this time!). Problem i...	James B	1	483	Feb 27, 2023 by texasT
	New levers (Preview) Hi got an eBay delivery today and fitted a set of blue stubby pivot levers to the ttr will post pics and feed back soon Ran out of mods so tried a bit of bling -- Edited by ttboof on Friday 20th of September 2019 10:19:40 AM	ttboof	13	958	Feb 27, 2023 by TerryK
	Bike smoking when warmed up (Preview) Hi guys, just got my 2005 Up and running after a tidy up in the workshop. Starts lovely and runs well from cold. Left it to warm up to change the oil but once warm it smokes quite a bit, puffs as it is revved I would say white or blue. Im not sure how old the fuel is but I will change this. was thinking of doing a co...	meadus69	7	743	Feb 1, 2023 by meadus69
	oil feed banjo (Preview) my banjo bolt on the clutch cover under the exhaust is just spinning won't tighten up at all, gutted any knows best way to fix it easily and cheapily.	sammyttr	9	1063	Jan 28, 2023 by dlee22
	Indicators (Preview) I am finishing up re-assembling my 2005 after an overhaul. connected the rear indicators back up and the rh one works fine but the lh flashes too fast. front indicators all connected as they should and everything lighting up, just lh is flashing much faster. dodgy flasher relay? I have some LED re...	meadus69	2	682	Jan 23, 2023 by meadus69
	Fuel tank is my culprit!!! (Preview) Ok I have removed and cleaned the carb 4 times. I know what you all are thinking and I now too have the benefit of experience. "dude you should have cleaned the tank as one of the first steps to getting a bike that has been sitting with fuel in it for 5 to 6 years!!!" The tank is full of crap! I have a 2006 TTR blu...	ghardison	6	570	Jan 16, 2023 by ghardison
	Valve clearances (Preview) Hey guys hope all is well and happy new year! So my TTR is running leaner than an Olympic marathoner. White spark plug and no carbon build up. New spark plug. The header is glowing red yadda yardda. This is a 2005 TTR 250 US/CA model. I am once again cleaning the carb and checking jet sizes. I will send t...	ghardison	7	913	Jan 12, 2023 by mossproof
	Engine serial number - bike model/country (Preview) Hi, just brought a spare engine from a UK breaker who'd totally forgotten where it came from. It's not got an engine number, just 4GY stamped on the boss, doesn't appear to have been messed with and no sign that the cases have been replaced unless it was a very long time ago (also unlikely at £2K+ a set!)....	mmwain	3	728	Jan 7, 2023 by TTRfan
	What am i missing? (Preview) Hi guys, Any idea what i am missing that attaches to these fixing points on the LH side of the frame? Im presuming the lower mounts are for a side stand switch that someone has removed? Thanks Tom	meadus69	5	734	Jan 3, 2023 by meadus69
	Oil consumption RAID 94 (Preview) good evening I'm in need of advice on what might be affecting oil consumption on my '94 raid. when I put it to work it doesn't smoke, every now and then when I accelerate it sends out a "jet" of smoke. What could be causing the excessive oil consumption? thanks	RAID	2	529	Dec 17, 2022 by RAID
	List of problematic nuts and bolts nuts bolts fasteners (Preview) Hi everybody, the TTR250 is a reliable bike, but like every bike model in manufacturing history, there are areas that need watching - namely nuts and bolts that are prone to loosening (or to freezing in place) or to being stripped or mangled - eg often on parts subject to heat or vibration stress or join...	brindabella	6	1859	Dec 10, 2022 by tripodtiger
	Bike dies on idle with choke in. (Preview) Hi Guys, I have just recently gotten my carb back together and on the bike - Reason for taking it apart was that it would bog down and die when applying throttle. I've cleaned the jets and put in a new float bowl seal and diaphram o ring seals (Old ones were flattened, diaphram is in good condition). I follo...	BikerMat	7	1622	Dec 9, 2022 by ghardison
	Before I go ANY FURTHER, are these shavings a show stopper? (Preview) Ok so today I passed some major hurdles on the TTR 250. I finally got the check valve in the mail - inserted it - and finished the carb rebuild. Reinstalled Carb, added fuel and the engine started immediately. It was truly a proud moment. I even started to think well "just maybe". I had halted any ot...	ghardison	3	586	Nov 18, 2022 by Ttboof
	What size O-rings for the Pilot Screw? (Preview) So all-balls carb rebuild kit didn't provide everything - what size O ring goes on the pilot screw? The one provided is too small. I see I am not the only person to run into this issue - sorry I couldn't find that thread this morning to ask this there. Apologize if I am junking up the place. How do I sear...	ghardison	2	572	Nov 11, 2022 by ghardison
	Starter Plunger, where does this seal belong? (Preview) I recently tore into a major carburetor repair on a non running 2005 TTR. Took several ultra sonic soaks and a deep soak in some Berrymans. Replaced everything that was included in the all balls rebuild kit. Waiting on diaphragm and check valve then hopefully she'll come back to life. In the meantim...	ghardison	2	479	Nov 10, 2022 by ghardison
	Rear foot pegs for Raid - now required for MOT (Preview) Does anyone know where I can get rear foot pegs for the TTR250 Raid. Apparently they are now required by the MOT if your seat can take 2 people.	sslrgrt	8	641	Nov 3, 2022 by Forgorin
	Help please: weird starter/no-spark issue (Preview) Hi all, Two weeks ago my blue TTR (2003) was working fine: I did a 135k on/off road trip, parked up and when I went back to the bike a day later it wouldn't start. The starter would turn but there was no spark. Being a lazy sod I took it to my local Yamaha dealer. They did static tests and said the stator was duff...	glebe74	10	695	Oct 31, 2022 by mossproof
	Spindle trouble with YZ forks (Preview) I took the TTR down to the local tyre fitters today, to get a new front tyre. Unfortunately they couldn't get the wheel off. The forks on my bike I think are 1998 YZ forks. When the spindle is unscrewed from the left fork leg, the spacer on that side is seized to the spindle. It reaches a point where all its do...	Dan-in-a-Van	3	492	Oct 31, 2022 by Ttboof
	Another jammed sprag clutch! (Preview) I am stripping an engine and the sprag clutch was really jammed. If you look at the way the bearing assembly has been bent, this sprag kicked back big time! Can't believe it wasn't giving out audible warning signals to the owner well before this happened. I have found the best way to safely unjam the s...	TTRfan	10	1303	Oct 30, 2022 by SRuss67
	DIY powder coating (Preview) Interesting video. The guy (can't find his name) has built his own powder coating setup very cheaply and, in this video, coats some TTR parts including the barrel from a 350 kit	TTRfan	2	689	Oct 6, 2022 by Ridaz
	Piston ring positions (Preview) Hi there, has anyone noticed during a rebuild that there top two piston rings are positioned closer together than expected? I noticed this in both the 325 and 350 I split recently but 100% know the 350 was spot on with spacings some 200 miles ago? The 325 had had more miles on and were closely aligned. T...	dlee22	7	1227	Oct 3, 2022 by JOHNYBOY
	REPLACE SPRAG CLUTCH "STARTER ONE WAY" (Preview) Just for information when you hear that dreaded "Clunk" sound when you stop the engine and your fears of having to replace the Sprag Clutch, its not that harder job. The sound was getting louder and more often when the engine was stopped. 2001 model with 16000km, we are the 4-5 owners looking at the bik...	Rossyboys	5	1568	Sep 22, 2022 by Rubber side down
	Blue tank speedo drive (Preview) Hi all, got an issue with my blue tank speedo drive, yes the speedo does work but when the dike is in the air & I turn the front wheel backward it locks up, I removed the speedo drive & inspected, cleaned it up. the worm gear or pinion had end float & I believe this is causing the lockup. To me it s...	TerryK	2	563	Sep 16, 2022 by TerryK
	Ignition Coil Lead replacement possible? coil lead ignition wire (Preview) Hello! It seems that the coil lead on my ttr has some internal damage.Sometimes when unplugging and putting it back i get misfires. I have cut a few mm of the end of the lead and screwed the plug cap back in and it cured the problem.But i already had to do it twice now. Is it possible to remove the lead from the...	Spyrious	4	711	Sep 11, 2022 by ttr steve
	Help: loss of power in 7000-10000rpm range (Preview) Dear all I am new to the forum, but post here as I hit a strange issue yesterday. I have fitted a TTR 250 engine in my daughters quad bike and have fitted a speeduino ECU and electronic fuel injection. During the mapping phase We did a number of high load runs (2-3 hours) on the dyno to ensure fueling is co...	lybker	3	1087	Aug 19, 2022 by lybker
	Starter motor (Preview) I had mine in and out a few times over the past week. I figured that a video could be useful for others.	tripodtiger	2	589	Aug 14, 2022 by ttr steve
	No spark (Preview) Hey guys, Ran into some trouble with my 93 TTR250.. had to weld my stator cover and when assembling back together I accidentally ran the cables outside the manifold. bike ran for a while but then wires got rubbed by my chain and it stopped. took me a while to track it down, in the meantime I’ve replaced the...	Marktheaussie	0	607	Aug 3, 2022 by Marktheaussie
	Clutch Kit... Kevlar or cork? (Preview) Just wanted to get an opinion from you guys... I need to put a clutch kit into my '06 TTR250. There are 2 on ebay that have caught my attention. One is Kevlar and the other is cork. Both are fairly close in price, just wondering on the pro's and cons of each. Also if you know of a cheaper or better kit I would app...	HarleyRigid	5	1647	Aug 1, 2022 by tripodtiger
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