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

TerryK · TerryK

Thought I would throw a new 14T sprocket on the front of the TTR, I went back from a 120-90 to 120-80 rear tyre with a 13T sprocket and as I want to use the TTR to reduce the KMS on the WRR Anyhow as soon as I removed the sprocket cover I thought the nut may be loose & yes as suspected it was loose, only just loo...

Woody84 · Woody84

Hi, Had my TTR about 6 months and never had a problem with it until the last couple of weeks. I'm a pretty casual rider at the moment as i Go out alot with my son on his PW50 (he's 5) so maybe every 2-3 weeks. Have checked and charged the battery and replaced the spark plug (correctly spaced) but still the sam...

yamalama · yamalama

Hi all, When I removed the cylinder head from my 2003, blue tanked TTR250 a couple of weeks ago I found two washers under one of the four large bolts that hold the cylinder head down. The other three of these bolts each had only one washer each. All the parts diagrams that I can find on line show only one wash...

Firestorm809 · Firestorm809

Morning All I spend the day yesterday replacing the bearings in the front and rear wheels, which apart from a few rusted spacers all went ok. I then moved onto the swinging arm 😫. 3 hours of hitting, heating and screaming and finally the bearings were removed. I then tried to gently knock one bearing i...

spud351 · spud351

So my wheels have a number of holes in the rims. I assume for rim locks as I can't think of anything else. I don't have rimlocks but will the holes cause issues? Won't the inner tube try to get out? It hasn't done as I've pumped them up but i wouldn't want it to change it's mind at speed. If they need blocking u...

JPVIC · JPVIC

So I recently did a service on my TTR after I bought it. The manual says 10w30 or 20w40, but I went with 10w60 (local motorcycle store is pretty high end so they mostly cater to hardcore enthusiasts). Is this ok? I've read on some online forums that it may cause more wear over time on low temps like at startu...

leigh · leigh

Hi All I went for my first ride on the bike after building the new one and I ditched the lowering link this time. First ride without one. AND holy hell doesn't that make a difference. It shocked me (nice pun Leigh!!) how different it was. I've always ridden with a 2" lowering link and thought the bike h...

Firestorm809 · Firestorm809

Yet another problem I have encountered.... I have serviced the carb (ultrasonic cleaned and All balls service kit fitted) and the bike sounds and runs lovely....until I hit a long strech of uphill road in high gear and the bike eventually cuts out. It seems the carb is being starved of fuel. The bike wi...

TTR2501966 · TTR2501966

Hi all, During deceleration/over run I get a popping/backfiring. The engine also hunts when I'm at low load/low revs. It also jerks when I'm just rolling the throttle - such as rolling up to a T junction and gently pulling away without stopping. Everything is fine when I'm loading up the engine wi...

chrishughes1989 · chrishughes1989

can I get parts to stop play in the joint? or do I have to get the whole rebuild kit?

bmw · bmw

Went to start up this morning, cranked over, fired but did not catch tried again ,now cranking faster than normal no sign of starting. Checked with the kick start, by hand no resistance worth mentioning. Has anyone had this problem, there was no unusual noise at all and it was running perfectly w...

Fat Leopard · Fat Leopard

I have had little luck finding a replacement headlight bulb for the '00 US TTR. The local dealer *may* be able to get one in a few months for about $65 each - seriously? I have a Polisport Halo that I intend to fit at some point but I wanted to repair the existing setup for simplicity. Well... this is what I di...

xavier · xavier

Hello, As I have just explain in my presentation, I bought a 93's TTR250 last saturday and I m starting to check the parts which need to be replace. The first one is the rubber pipe between the carburator and the cylinder;, it is completely worn and probably creates an air leak wich can explain why the en...

honda15i · honda15i

The original bolt cap can be easily damaged. so as alternative i found cheap backup bolt from mother china. seems to fit ok -- Edited by honda15i on Wednesday 15th of May 2019 08:28:45 PM

honda15i · honda15i

These Yamaha top bearings does not last long. Every season I need to replace them. I found alternative top bearing from Germany for the cost of 15€. It is 1 or 2 mm narrower than original, but in double less price than yamaha's. Fits perfectly. Bearing code for googling - GXSW 12.26 Adding photos (comp...

Ross · Ross

Hi I have recently had the sprag clutch on My TTR replaced as there was a noise when you switched the bike off. The mechanic that did the job said there was significant wear on the sprag you could rotate it both ways before it would lock up. The Boss gear he said had a little bit of wear but he didn't think it w...

robs · robs

Hi all, I have a couple of questions relating to the TTR gearbox, hopefully the collective genius of the forum can help me! I've had a couple of occasions recently where I get stuck in first gear. Gear changes on the low gears can also tend to seem very stiff / like they are not engaging properly. Higher ge...

Captdanno · Captdanno

Hello guys new to this but having a little problem with my new to me 2006 ttr 250. Its four stroke. and the problem is it starts like a dream with the electric starter... But when i get into sticky situations and use kick starter it wont start bike.... It will engage but will not give enough umph to actuall...

Firestorm809 · Firestorm809

I have a lovely dent in the right side of my metal tank. Any tips on how to straighten this out??? Matthew

honda15i · honda15i

one of mine ttrs bogs on high rpm around 6500-7000. It seems like I hit rpm limiter, engine doesn’t reach full power. My second TTR reach top high rpm without bogging. I took these parts from second ttr and installed on first: 1. Carb with fuel hoses and one way valves 2. Cdi 3. Ignition coil 4. Spark plug 5...

tom13 · tom13

Google translator If I put the ttr on the right side, can I unscrew the oil plug? Does the oil leak? I want to replace the copper pad because I have a leak.

honda15i · honda15i

Hi, I'm not a fan of Chinese items however it happened I have head and cylinder gaskets for price of 7£. The head gasket is very thin and without teflon. Yamaha gasket I think has two or three gaskets stamped and painted with teflon. Has anybody tried chinese gaskets? See photos. -- Edited by honda15i on...

Per Ulv · Per Ulv

Hi Anyone knows if a stator from a later model wold fit? IE the year 1999? Having problems finding av stator for my bike from 1994. Thanks Per Arne Bustnes Norway

BikerMat · BikerMat

Hi guys, Small problem with the compression damping clicker on the reservoir of the rear shock on my bike. It doesn't like to turn or click It rotates a few degrees either way but seems to be pretty stuck and I don't fancy forcing it. This is the closest picture I have of it currently, any ideas as to whats u...

TTRfan · TTRfan

I thought it might be interesting to post up some of the TTR nasties that I have come across so that worse case scenarios can be viewed. Please feel free to add your own. First off, how about this for a home-made timing chain tensioner? Or a delaminated standard case saver? Or a valve seat that fell out?...

tripodtiger · tripodtiger

What is this seal? Is it a seal? It's not shown on the Yamaha Parts Finder microfiche that I access on line. I forgot - 2002 TTR in Oz. The bolt behind drains the oil from the left side exhaust cam well.

TerryK · TerryK

Hi guys, the right tank decal is blistered, anyone had this, tried to work the air out but it keeps coming back, this bike is pretty tidy apart from this decal, checked with Yamaha & they want $586 for the pair of decals....no way I have ordered a set of Ballards decals for $60 but may put them away for a...

Ross · Ross

Hi Occasionally my TTR would make a clunk when you switched it off perhaps once in twenty times. Just recently this seems to be getting more frequent so much so that I have just come home from a Dales ride a day early as I didnt want to do any damage to the engine having just rebuilt the top end. I guess now it...

mmwain · mmwain

My 04 blue plastic tank has become completely non-gas (as in vapour, not as in American petrol!) proof, which I think is due to ethanol in fuel these days making the plastic go porous to gas, as detailed on other websites. The OE stickers bubbled off and new stickers soon followed. The tank is complet...

The BushMan · The BushMan

Okay, a may be being stupid here but I'm having trouble getting the old link out. I have removed the rubber bungs and removed the 17" bolt but cannot get the bolt/sleeve to budge, the old link moves freely from side to side alright. Is there something I'm missing or doing wrong? Any help appreciated.

Topic		Started By	Replies	Views	Last Post
	Countershaft sprocket (Preview) Thought I would throw a new 14T sprocket on the front of the TTR, I went back from a 120-90 to 120-80 rear tyre with a 13T sprocket and as I want to use the TTR to reduce the KMS on the WRR Anyhow as soon as I removed the sprocket cover I thought the nut may be loose & yes as suspected it was loose, only just loo...	TerryK	9	1355	Jul 3, 2019 by TerryK
	Trouble starting from cold (Preview) Hi, Had my TTR about 6 months and never had a problem with it until the last couple of weeks. I'm a pretty casual rider at the moment as i Go out alot with my son on his PW50 (he's 5) so maybe every 2-3 weeks. Have checked and charged the battery and replaced the spark plug (correctly spaced) but still the sam...	Woody84	6	1083	Jun 30, 2019 by Kaos
	Two washers under a large cylinder head hold down bolt (Preview) Hi all, When I removed the cylinder head from my 2003, blue tanked TTR250 a couple of weeks ago I found two washers under one of the four large bolts that hold the cylinder head down. The other three of these bolts each had only one washer each. All the parts diagrams that I can find on line show only one wash...	yamalama	3	1298	Jun 27, 2019 by yamalama
	Swinging Arm Bearings (Preview) Morning All I spend the day yesterday replacing the bearings in the front and rear wheels, which apart from a few rusted spacers all went ok. I then moved onto the swinging arm 😫. 3 hours of hitting, heating and screaming and finally the bearings were removed. I then tried to gently knock one bearing i...	Firestorm809	1	1030	Jun 23, 2019 by KiwiJeff
	Why so many holes and will they cause issues? (Preview) So my wheels have a number of holes in the rims. I assume for rim locks as I can't think of anything else. I don't have rimlocks but will the holes cause issues? Won't the inner tube try to get out? It hasn't done as I've pumped them up but i wouldn't want it to change it's mind at speed. If they need blocking u...	spud351	9	1411	Jun 10, 2019 by spud351
	Oil visco ratings (Preview) So I recently did a service on my TTR after I bought it. The manual says 10w30 or 20w40, but I went with 10w60 (local motorcycle store is pretty high end so they mostly cater to hardcore enthusiasts). Is this ok? I've read on some online forums that it may cause more wear over time on low temps like at startu...	JPVIC	2	1387	Jun 7, 2019 by JOHNYBOY
	TTR suspension and lowering links (Preview) Hi All I went for my first ride on the bike after building the new one and I ditched the lowering link this time. First ride without one. AND holy hell doesn't that make a difference. It shocked me (nice pun Leigh!!) how different it was. I've always ridden with a 2" lowering link and thought the bike h...	leigh	1	1885	Jun 7, 2019 by yamalama
	Losing power going for long periods uphill. (Preview) Yet another problem I have encountered.... I have serviced the carb (ultrasonic cleaned and All balls service kit fitted) and the bike sounds and runs lovely....until I hit a long strech of uphill road in high gear and the bike eventually cuts out. It seems the carb is being starved of fuel. The bike wi...	Firestorm809	3	1326	Jun 5, 2019 by ttr steve
	Back firing and popping from exhaust on deceleration/over run (Preview) Hi all, During deceleration/over run I get a popping/backfiring. The engine also hunts when I'm at low load/low revs. It also jerks when I'm just rolling the throttle - such as rolling up to a T junction and gently pulling away without stopping. Everything is fine when I'm loading up the engine wi...	TTR2501966	8	2681	Jun 5, 2019 by jasparach
	play in joint (Preview) can I get parts to stop play in the joint? or do I have to get the whole rebuild kit?	chrishughes1989	4	1081	Jun 3, 2019 by comeragh
	loss of compression (Preview) Went to start up this morning, cranked over, fired but did not catch tried again ,now cranking faster than normal no sign of starting. Checked with the kick start, by hand no resistance worth mentioning. Has anyone had this problem, there was no unusual noise at all and it was running perfectly w...	bmw	1	1459	May 29, 2019 by TTRfan
	US model headlight bulb problems (Preview) I have had little luck finding a replacement headlight bulb for the '00 US TTR. The local dealer may be able to get one in a few months for about $65 each - seriously? I have a Polisport Halo that I intend to fit at some point but I wanted to repair the existing setup for simplicity. Well... this is what I di...	Fat Leopard	7	1075	May 20, 2019 by Fat Leopard
	adapter carburator inlet from china? (Preview) Hello, As I have just explain in my presentation, I bought a 93's TTR250 last saturday and I m starting to check the parts which need to be replace. The first one is the rubber pipe between the carburator and the cylinder;, it is completely worn and probably creates an air leak wich can explain why the en...	xavier	5	1033	May 16, 2019 by ttr steve
	Chinese cnc machined oil filler cap bolt (Preview) The original bolt cap can be easily damaged. so as alternative i found cheap backup bolt from mother china. seems to fit ok -- Edited by honda15i on Wednesday 15th of May 2019 08:28:45 PM	honda15i	2	1427	May 16, 2019 by ttboof
	Alternative top bearing for rear Shock absorber (Preview) These Yamaha top bearings does not last long. Every season I need to replace them. I found alternative top bearing from Germany for the cost of 15€. It is 1 or 2 mm narrower than original, but in double less price than yamaha's. Fits perfectly. Bearing code for googling - GXSW 12.26 Adding photos (comp...	honda15i	3	1335	May 15, 2019 by honda15i
	Sprag Clutch Boss Gear (Preview) Hi I have recently had the sprag clutch on My TTR replaced as there was a noise when you switched the bike off. The mechanic that did the job said there was significant wear on the sprag you could rotate it both ways before it would lock up. The Boss gear he said had a little bit of wear but he didn't think it w...	Ross	7	1159	May 13, 2019 by Ross
	Sticking gear shifts (Preview) Hi all, I have a couple of questions relating to the TTR gearbox, hopefully the collective genius of the forum can help me! I've had a couple of occasions recently where I get stuck in first gear. Gear changes on the low gears can also tend to seem very stiff / like they are not engaging properly. Higher ge...	robs	8	1250	May 12, 2019 by robs
	Kick start problem 2006 the 250 (Preview) Hello guys new to this but having a little problem with my new to me 2006 ttr 250. Its four stroke. and the problem is it starts like a dream with the electric starter... But when i get into sticky situations and use kick starter it wont start bike.... It will engage but will not give enough umph to actuall...	Captdanno	10	2460	May 12, 2019 by JPVIC
	Tank problem (Preview) I have a lovely dent in the right side of my metal tank. Any tips on how to straighten this out??? Matthew	Firestorm809	5	987	May 9, 2019 by mossproof
	Engine bogs on high rpm (Preview) one of mine ttrs bogs on high rpm around 6500-7000. It seems like I hit rpm limiter, engine doesn’t reach full power. My second TTR reach top high rpm without bogging. I took these parts from second ttr and installed on first: 1. Carb with fuel hoses and one way valves 2. Cdi 3. Ignition coil 4. Spark plug 5...	honda15i	9	1292	May 8, 2019 by mossproof
	If I put the ttr on the right side, can I unscrew the oil plug? (Preview) Google translator If I put the ttr on the right side, can I unscrew the oil plug? Does the oil leak? I want to replace the copper pad because I have a leak.	tom13	5	1307	May 8, 2019 by tom13
	chinese gaskets (Preview) Hi, I'm not a fan of Chinese items however it happened I have head and cylinder gaskets for price of 7£. The head gasket is very thin and without teflon. Yamaha gasket I think has two or three gaskets stamped and painted with teflon. Has anybody tried chinese gaskets? See photos. -- Edited by honda15i on...	honda15i	3	1166	May 8, 2019 by honda15i
	Stator TTR 250 1994 Stator (Preview) Hi Anyone knows if a stator from a later model wold fit? IE the year 1999? Having problems finding av stator for my bike from 1994. Thanks Per Arne Bustnes Norway	Per Ulv	3	1383	May 2, 2019 by TTRfan
	Rear shock compression damping knob stuck (Preview) Hi guys, Small problem with the compression damping clicker on the reservoir of the rear shock on my bike. It doesn't like to turn or click It rotates a few degrees either way but seems to be pretty stuck and I don't fancy forcing it. This is the closest picture I have of it currently, any ideas as to whats u...	BikerMat	2	1769	May 2, 2019 by BikerMat
	"Black museum" - pics of TTR nasties - not suitable for younger viewers! (Preview) I thought it might be interesting to post up some of the TTR nasties that I have come across so that worse case scenarios can be viewed. Please feel free to add your own. First off, how about this for a home-made timing chain tensioner? Or a delaminated standard case saver? Or a valve seat that fell out?...	TTRfan	6	5327	Apr 30, 2019 by Fat Leopard
	Please help - unidentified seal leaking. (Preview) What is this seal? Is it a seal? It's not shown on the Yamaha Parts Finder microfiche that I access on line. I forgot - 2002 TTR in Oz. The bolt behind drains the oil from the left side exhaust cam well.	tripodtiger	5	1229	Apr 30, 2019 by tripodtiger
	Tank Decals (Preview) Hi guys, the right tank decal is blistered, anyone had this, tried to work the air out but it keeps coming back, this bike is pretty tidy apart from this decal, checked with Yamaha & they want $586 for the pair of decals....no way I have ordered a set of Ballards decals for $60 but may put them away for a...	TerryK	14	1770	Apr 29, 2019 by Fat Leopard
	Possible Sprag clutch probelms (Preview) Hi Occasionally my TTR would make a clunk when you switched it off perhaps once in twenty times. Just recently this seems to be getting more frequent so much so that I have just come home from a Dales ride a day early as I didnt want to do any damage to the engine having just rebuilt the top end. I guess now it...	Ross	3	1286	Apr 29, 2019 by Ross
	Porous blue plastic tank bubbles the stickers off (Preview) My 04 blue plastic tank has become completely non-gas (as in vapour, not as in American petrol!) proof, which I think is due to ethanol in fuel these days making the plastic go porous to gas, as detailed on other websites. The OE stickers bubbled off and new stickers soon followed. The tank is complet...	mmwain	11	1576	Apr 29, 2019 by ttboof
	Fitting a lowering link (Preview) Okay, a may be being stupid here but I'm having trouble getting the old link out. I have removed the rubber bungs and removed the 17" bolt but cannot get the bolt/sleeve to budge, the old link moves freely from side to side alright. Is there something I'm missing or doing wrong? Any help appreciated.	The BushMan	20	2436	Apr 28, 2019 by Falkie
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