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

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...

Rossyboys · Rossyboys

Hi all, need to replace clutch in a 2001 TTR250 blue frame plastic tank. I live in Sydney Australia. Will do Friction plates, drive plates and springs, ...might as well while cover is off. Brand and store if possible, or link Thanks Grahame

Christos · Christos

Hi guys, I took my 350 on the road and the clutch was slipping under hard acceleration. Everything set according to specs, EBC heavy duty discs and springs, OE six disc basket. The basket has slight notching though. I feel too much power is lost there. What could be the cause? Anyone with a 350 having the...

Gazztop · Gazztop

Good morning, ive Started doing some essential work on my newly bought 2003 blue ttr,it was running terrible so after a full carb rebuild the next job is the Speedo,as that’s essential for me,it wasn’t working at all so I checked the speedo drive hub and it has no internals at all,I’m super skint at t...

Archershome · Archershome

Hello all, going to putting new piston and rings into TTR and wondered how long / running in process is? Any advice would be great. Cheers

TTRfan · TTRfan

https://www.ebay.co.uk/itm/NOS-YAMAHA-3J0-22147-00-00-REAR-SWING-ARM-CHAIN-P...

Gazztop · Gazztop

Hi guys quick question for ya,I’ve just bought this bike and noticed it has a bad oil leak from the top end somewhere,I rode it briefly the other day and it was way too bad,it seemed to be leaking out at pressure,as if there is no crankcase breathers,so I go and investigate,and I can’t find one on there at...

Christos · Christos

I was looking at the clutch diagram from the manual and noticed that part 11 in the photo does not exist (in the manual I have). The photo is from Brian's guide. Is this part for the blue or OE TTRs only? What if it is missing, would it cause a problem? -- Edited by Christos on Friday 8th of July 2022 01:01:10 P...

oshanrube · oshanrube

How long should a chain slider last under normal conditions? I'm referring to the slider near the front spoket. Mine seems to be eating away way too soon, and the chain tension is correct, what other factors can affect this?

Christos · Christos

Hey guys, How often do you check valve clearance? The manual says every 2000 km, isn't that a rather narrow interval?

Bobbler · Bobbler

Ive recently replaced the lower carb o-rings, seal and diaphragm and set up the carb with 50 pilot, I think 142 or 147 main (couldn't read clearly) with pilot screw 2 turns out, twin air filter (snorkel still present) and dominator end can. It starts up almost immediately but the popping on the overru...

oshanrube · oshanrube

Hi all, i noticed that every couple of days the breather cap is coming off and the bike runs bit rough , so my question is can i glue this off? is this something which i will need access to eventually? also how do you usually refill the rear brake reservoir ? its located in a place where its very hard to pour...

dlee22 · dlee22

Hi there, I just finished the 350 rebuild a few weeks ago and took it out for a spin for 15 miles and decided the jetting was too far out. I adjusted to 147 50 bottom clip starts fine, however the down pipe started glowing and therefore running lean. I checked my timing thinking it may be slightly off and i...

Ian Mallows · Ian Mallows

My 1995 model was running great when I did a 200 km ride 3 weeks ago, now it won’t start. I checked spark and compression to find only 65psi. Have checked carby and valve seating plus piston and rings but found nothing apparently wrong. Now out of ideas. ian, Australia

BrianG · BrianG

Hi. Can anyone recommend any folding mirrors for a 2005 Blue? There seems to be a lot of confusion about thread pitch, size and rotation. Thanks

TTRollin · TTRollin

Can anyone tell me what this part is please? I think it’s slowly leaking oil.

INU · INU

newbie here... Read through some of the posts and could not find the info needed. Looking for oil filter for a 93/94 TTR. What other model filters fit this model as cannot seem to easily source original filter using parts number. I was wondering if late model serrow 250 filters are the same. Thanks for...

INU · INU

Hi, Looking for a workshop manual for 93/94 TTR250. I checked some of posts here but they are dated, maybe cause its nearly 30 years old. I am aware that one can purchase one from this forum but the purchasing process is long and to much personal information just to purchase a manual. Does any one have one...

Joss · Joss

Bit more work done to my project ttr. Rear shock serviced and rebuilt and I fitted a grease nipple to the swinging arm.

Joss · Joss

Has anyone ever fitted grease nipple to the suspension linkage ? My xr600 has them and they make looking after the linkage so much easier .

Bjornbsrkr · Bjornbsrkr

This is a bit of a long story, but hopefully someone can see what I am missing…… Two years ago, I was given a 2006 TTR250 for use as an instructor at an off road school. It was a perfect bike spending 50+ hours a week teaching novices to ride - competent at everything and comfortable for my old bones! The bik...

GNT Biker · GNT Biker

Hi All new member to the forum and looking for help. I am based in Southern Spain not far from Malaga so still enjoying the winter sun although not as much as I had hoped. I have a 2005 TTR (blue) which I have had for a few years now, only has 10k kilometres and has full Yamaha service history, the last one wit...

the-dirty-commuter · the-dirty-commuter

My cam chain sounds like it's become loose (clattering, not as crisp as before). Is there a thread about checking the automatic tensioner? Can anyone advise me on this? Thanks

Tommy Young · Tommy Young

Evening, Has anyone used a different cage/support for their air filter. I have a 93 OE Not keen on spending the £50 for an original Yamaha one. I have seen some plastic cages on the internet but I'm not sure of these are for a Blue TTR? Anyone out there with a Open Enduro using a different cage?

Lancashirelad · Lancashirelad

Having fitted the 50mm lowering link I’ve come to the conclusion the stand now needs shortening, anyone who’s done this how much did you shorten it by, I’m thinking that as the bike had a tendency to lean quite a lot as standard maybe removing 25mm would suffice rather that 50mm, if I put some 25mm pieces...

WiresharkTTR · WiresharkTTR

Hello, i just like to apogoisie for any confusion i may have caused, its just somethings have been quite problematic and after receving advice i think i know whats being explained but when infront of the machine i seem to be a little dazzled and i am to embarassed and dont want to be a pest to ask again. I wo...

WiresharkTTR · WiresharkTTR

photo attached :)

Topic		Started By	Replies	Views	Last Post
	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	1560	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	1021	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	971	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	2066	Aug 1, 2022 by tripodtiger
	Whats the best clutch Kit to get for a 2001 TTR250 Living in Sydney Australia (Preview) Hi all, need to replace clutch in a 2001 TTR250 blue frame plastic tank. I live in Sydney Australia. Will do Friction plates, drive plates and springs, ...might as well while cover is off. Brand and store if possible, or link Thanks Grahame	Rossyboys	2	956	Jul 29, 2022 by tripodtiger
	350 clutch slipping under hard acceleration (Preview) Hi guys, I took my 350 on the road and the clutch was slipping under hard acceleration. Everything set according to specs, EBC heavy duty discs and springs, OE six disc basket. The basket has slight notching though. I feel too much power is lost there. What could be the cause? Anyone with a 350 having the...	Christos	12	1099	Jul 25, 2022 by Jeff B
	Blue bike speedo drive (Preview) Good morning, ive Started doing some essential work on my newly bought 2003 blue ttr,it was running terrible so after a full carb rebuild the next job is the Speedo,as that’s essential for me,it wasn’t working at all so I checked the speedo drive hub and it has no internals at all,I’m super skint at t...	Gazztop	0	840	Jul 22, 2022 by Gazztop
	Running in new piston and rings (Preview) Hello all, going to putting new piston and rings into TTR and wondered how long / running in process is? Any advice would be great. Cheers	Archershome	11	3637	Jul 16, 2022 by James Truro
	Swing arm "chain protector" parts - anyone ever seen these? (Preview) https://www.ebay.co.uk/itm/NOS-YAMAHA-3J0-22147-00-00-REAR-SWING-ARM-CHAIN-P...	TTRfan	1	2915	Jul 15, 2022 by KiwiJeff
	Crankcase breather (Preview) Hi guys quick question for ya,I’ve just bought this bike and noticed it has a bad oil leak from the top end somewhere,I rode it briefly the other day and it was way too bad,it seemed to be leaking out at pressure,as if there is no crankcase breathers,so I go and investigate,and I can’t find one on there at...	Gazztop	13	1193	Jul 12, 2022 by KiwiJeff
	Clutch question (Preview) I was looking at the clutch diagram from the manual and noticed that part 11 in the photo does not exist (in the manual I have). The photo is from Brian's guide. Is this part for the blue or OE TTRs only? What if it is missing, would it cause a problem? -- Edited by Christos on Friday 8th of July 2022 01:01:10 P...	Christos	2	912	Jul 11, 2022 by Christos
	Life of a chain slide (Preview) How long should a chain slider last under normal conditions? I'm referring to the slider near the front spoket. Mine seems to be eating away way too soon, and the chain tension is correct, what other factors can affect this?	oshanrube	3	1057	Jul 3, 2022 by TerryK
	Valve clearance check (Preview) Hey guys, How often do you check valve clearance? The manual says every 2000 km, isn't that a rather narrow interval?	Christos	27	5633	Jul 1, 2022 by TTRfan
	Popping on deceleration/overrun (Preview) Ive recently replaced the lower carb o-rings, seal and diaphragm and set up the carb with 50 pilot, I think 142 or 147 main (couldn't read clearly) with pilot screw 2 turns out, twin air filter (snorkel still present) and dominator end can. It starts up almost immediately but the popping on the overru...	Bobbler	3	1069	Jun 20, 2022 by mossproof
	breather cap coming off (Preview) Hi all, i noticed that every couple of days the breather cap is coming off and the bike runs bit rough , so my question is can i glue this off? is this something which i will need access to eventually? also how do you usually refill the rear brake reservoir ? its located in a place where its very hard to pour...	oshanrube	3	926	Jun 17, 2022 by mossproof
	Cam chain wear/glowing down pipe (Preview) Hi there, I just finished the 350 rebuild a few weeks ago and took it out for a spin for 15 miles and decided the jetting was too far out. I adjusted to 147 50 bottom clip starts fine, however the down pipe started glowing and therefore running lean. I checked my timing thinking it may be slightly off and i...	dlee22	7	1547	Jun 12, 2022 by dlee22
	White TTR250 won’t start, (Preview) My 1995 model was running great when I did a 200 km ride 3 weeks ago, now it won’t start. I checked spark and compression to find only 65psi. Have checked carby and valve seating plus piston and rings but found nothing apparently wrong. Now out of ideas. ian, Australia	Ian Mallows	9	3259	Jun 4, 2022 by Ian Mallows
	Folding mirrors (Preview) Hi. Can anyone recommend any folding mirrors for a 2005 Blue? There seems to be a lot of confusion about thread pitch, size and rotation. Thanks	BrianG	4	1101	Apr 21, 2022 by BrianG
	Does anyone know what this part is? (Preview) Can anyone tell me what this part is please? I think it’s slowly leaking oil.	TTRollin	3	1185	Mar 26, 2022 by TTRollin
	Steel tank oil filter needed. (Preview) newbie here... Read through some of the posts and could not find the info needed. Looking for oil filter for a 93/94 TTR. What other model filters fit this model as cannot seem to easily source original filter using parts number. I was wondering if late model serrow 250 filters are the same. Thanks for...	INU	3	939	Mar 26, 2022 by Christos
	Workshop manual (Preview) Hi, Looking for a workshop manual for 93/94 TTR250. I checked some of posts here but they are dated, maybe cause its nearly 30 years old. I am aware that one can purchase one from this forum but the purchasing process is long and to much personal information just to purchase a manual. Does any one have one...	INU	3	1666	Mar 24, 2022 by INU
	Shock rebuild (Preview) Bit more work done to my project ttr. Rear shock serviced and rebuilt and I fitted a grease nipple to the swinging arm.	Joss	3	1053	Mar 13, 2022 by JOHNYBOY
	Grease nipples !!!! (Preview) Has anyone ever fitted grease nipple to the suspension linkage ? My xr600 has them and they make looking after the linkage so much easier .	Joss	2	1160	Feb 24, 2022 by Joss
	What am I missing? (Cranks, won’t start) (Preview) This is a bit of a long story, but hopefully someone can see what I am missing…… Two years ago, I was given a 2006 TTR250 for use as an instructor at an off road school. It was a perfect bike spending 50+ hours a week teaching novices to ride - competent at everything and comfortable for my old bones! The bik...	Bjornbsrkr	9	1402	Feb 18, 2022 by TTR2501966
	Greetings from sunny but seized Spain (Preview) Hi All new member to the forum and looking for help. I am based in Southern Spain not far from Malaga so still enjoying the winter sun although not as much as I had hoped. I have a 2005 TTR (blue) which I have had for a few years now, only has 10k kilometres and has full Yamaha service history, the last one wit...	GNT Biker	7	1237	Feb 14, 2022 by skinut
	cam chain noise (Preview) My cam chain sounds like it's become loose (clattering, not as crisp as before). Is there a thread about checking the automatic tensioner? Can anyone advise me on this? Thanks	the-dirty-commuter	24	4489	Feb 7, 2022 by mossproof
	Air Filter Cage (Preview) Evening, Has anyone used a different cage/support for their air filter. I have a 93 OE Not keen on spending the £50 for an original Yamaha one. I have seen some plastic cages on the internet but I'm not sure of these are for a Blue TTR? Anyone out there with a Open Enduro using a different cage?	Tommy Young	0	925	Feb 5, 2022 by Tommy Young
	Shortening the sidestand? (Preview) Having fitted the 50mm lowering link I’ve come to the conclusion the stand now needs shortening, anyone who’s done this how much did you shorten it by, I’m thinking that as the bike had a tendency to lean quite a lot as standard maybe removing 25mm would suffice rather that 50mm, if I put some 25mm pieces...	Lancashirelad	2	1027	Jan 30, 2022 by Lancashirelad
	Hello and sorry for the long one. (Preview) Hello, i just like to apogoisie for any confusion i may have caused, its just somethings have been quite problematic and after receving advice i think i know whats being explained but when infront of the machine i seem to be a little dazzled and i am to embarassed and dont want to be a pest to ask again. I wo...	WiresharkTTR	5	944	Jan 27, 2022 by WiresharkTTR
	is this ok to use? (Preview) photo attached :)	WiresharkTTR	4	1011	Jan 26, 2022 by WiresharkTTR
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