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

TTRfan · TTRfan

As suggested by brindabella, I have started this thread to show my own choice of "proven/economical/useful workshop consumables". I have started off with my UK thoughts maybe other owners from USA, Australia, etc, can weigh in with their local equivalent brands...... First off, one o...

TTRfan · TTRfan

Thread repair kits. These have got me out of trouble on a regular basis! Available quite cheaply on eBay. For the manufacturer's page - see here

Forgorin · Forgorin

So, I'm looking for more power! I have a '94 raid. I am hoping to add electric grips and an electric vest. Grips run at about 60 watts. That's almost half of what the stator produces. Are there any aftermarket stators for the bike? Am I looking at a rebuild?

kylarama · kylarama

Years ago when I last went riding I used to fill up my backpack with all types of useless crap that was heavy and probably only usefull on everyone elses bikes. What basic tools and spares specifically suited to a TTR should I carry as a minimum? Generally we wouldn't venture anymore than about 100km...

Susan Parker · Susan Parker

I am in the process of putting the engine back together, having had the bore de glazed and new piston rings installed: the instructions indicate to fit an 'O' ring on the base of the cylinder and the new gasket below the 'O' ring. Is this correct; it doesn't feel like that will make a good seal! The 'o' ring...

rdchair · rdchair

Hi any recommendations for someone to replace my valve guides ? Cheers . Uk and north preferred

rdchair · rdchair

Hi all . Help please . 🙏 bike was running great trail riding at the weekend . Went to start to move up step in garden and it let out an awfull mechanical clunk . I tried to just turn over with kickstart and it was locked . Rocked bike and kick went down once then locked again . Stripped first cover off , all cogs i...

Dudley · Dudley

I am currently building a 2004 TT250R engine but I am not sure what goes in the two holes pointed to in the attached picture. The holes are behind the clutch and the only picture I can find in on the TTR250 website and they look like rubber patches, the top one appears to have a smaller hole in it. My best gues...

MattPass · MattPass

Hello all. Just wondered if anyone had ever had a problem with a slight leak in the carb when standing and not even running. I think (not sure at all) it may be coming from the lid where you access the diaphragm (photo attached). I took the carb off and then tightened everything up. However, still leaki...

robject33 · robject33

My fuel tank has rusted through from where the seat has been rubbing on it. Previous owner must have left it bare metal like that for quite a while and there are two holes on the one side. I've attacked it with a wire brush attachment and this is the result: What would you all recommend I do to fix this? I h...

Texas · Texas

Just started a couple days ago, noted that my speed was fluttering by up to 20kph, now, wildly. I even saw it at 170kph today which is obviously impossible. Can some wise head advise, is this likely to be the magnet in process of breaking up or the sensor malfunctioning?

wobbly · wobbly

At last a problem with the TTR, near side fork oil seal badly gone, looks a fairly straight forward job, just wondering best place to get the seals and what oil to use. and anything I should be aware of. thanks.

MichaeltT · MichaeltT

Good afternoon all i hope you are all well, i have a 2004 blue tanked ttr250 that came to me with LED indicators problem is they don't flash just stay on as a solid amber light has anyone got a link to a relay that is meant for LED winkers, I have tried the old post links but they are not active links anymore. ...

Ttboof · Ttboof

Checked the bike before a Friday ride tomorrow. And had a flat back tire . I can now say don't buy cheap tubes they perish .

dlowenst · dlowenst

After several years delay (!), I finally completed my sidelined top-end rebuild. All new parts (Wossner piston kit), all machine work sent out to a first-class machinist, 1mm over bore, new valves, cam sprockets, cam chain, etc. Set cam timing meticulously. Before reassembly, I checked the big-e...

Dan-in-a-Van · Dan-in-a-Van

Ok. My TTR has developed an annoying habit. It has cut out a dozen times at idle over the past few weeks, so I'm asking for ideas on what might be causing it. Today I took it for a 10-15 minute urban run at 30-40 mph, a 2 mile return trip up a dual carriage way at +60 mph, and finished off with start / stop, 1/4 mil...

tripodtiger · tripodtiger

After doing the starter clutch & kick starter, I re-fitted the exhaust, as you do. Got the torque wrench onto the exhaust studs and it wouldn't tighten even on about 8 lb.ft. Oh well, **** happens. Any interim repair, other than helicoil? I have a spare head that I will have serviced and fit so I c...

Susan Parker · Susan Parker

I am now the owner of PO55 OTS; and very happy with this lovely bike - apart from the mystery of the disappearing oil! There is no evidence of oil leaking, it does not smoke but at the end of every ride ( usually about 50 miles of gentle, Cornish lanes) I have to add at least 100ml of oil just to get the level vis...

robject33 · robject33

Hey all, My bike started running rough, bogging quite badly. Took it to a professional who said the rubber joint between the carb and engine neeeded replacing. Picked it up and it seemed to be running okay when I started it before leaving. Tried taking it out for a ride a couple of weeks later and it start...

Brighton Brad · Brighton Brad

Hello gang, does anyone have a paint code for the frame paint for the GREY RAID FRAME, mines the green tanked mode. Even if‘s a close match it would be greatly appreciated. tia, Brad.

MattPass · MattPass

Hi there, I see from the Gov.UK site that my 1999 TTR250 is not ULEZ (Ultra Low Emission Zone) compliant and hence will cost me £12.50 a ride the I get it going again. Just wondering if anyone (London based) has any experience of getting their bikes tested and then getting compliant some how??? Cheers,...

yamahalife · yamahalife

Ive looked through some of the older threads and I cant seem to find anything on replacing the front wheel bearings. Does anyone have a guide for that project? Also the torque specs for the axle nut and pinch bolts. Any help would be greatly appreciated. Thank y'all in advanced as always.

Ttboof · Ttboof

Hi a bit of info that may help some one I have found Yamaha online parts Australia, they're in Sydney and post parts. it's easy to look up the parts and add them to your cart purchase and have them posted. it saves me the 180km round trip to the nearest Yamaha dealer. (found it easier to find the TTR puttin...

Isaac · Isaac

Hello to anyone that can help, issue is that my speedo isn’t working I assume it’s the speed drive something with the gears need a quick fix for her to get registered.

The Drifter · The Drifter

I would like some advice on tyres as soon I will be ready for a new set soon I have had the Mitas on both front and rear whilst I found them very good off road I found them quite slippery when riding on the road and did come off quite a few times now I don't know whether it was me but maybe I need to try something di...

yamahalife · yamahalife

So I just purchased my TTR last Friday night and had been sitting for 2 years. I pulled the carb off and the front of the carb where it attaches to the cylinder head the rubber boot was splitand had tape around it. Does anyone know if they sell just the rubber boot or do I have to buy the entire piece that mount...

dlee22 · dlee22

Hi all, Roberta and I shipped the poor ttr250s back from South America, it really wasn't worth it from a financial perspective but I do like my one! I am just starting on refreshing it enough to ride again before next year tidying it up properly. I was just replacing the stretched cam chain and notice...

TTRfan · TTRfan

Many thanks to Igor for finding the Web Cam site - see here http://www.webcamshafts.com/ They offer two different camshaft sets as shown below. Anyone heard of the company or tried their camshafts?

yamahalife · yamahalife

I am going to replace the clutches on the bike next weekend. I understand how to do that but I cannot figure out how you adjust that arm while the motor is still in the bike. I cannot see the mark the arm is suppose to line up with. Has anyone done this on the bike without removing the motor? Is there anything I...

RAIDER · RAIDER

What’s this hole in the front side of the engine?

Topic		Started By	Replies	Views	Last Post
	STICKY: Essential workshop consumables - my choice - UK products (Preview) As suggested by brindabella, I have started this thread to show my own choice of "proven/economical/useful workshop consumables". I have started off with my UK thoughts maybe other owners from USA, Australia, etc, can weigh in with their local equivalent brands...... First off, one o...	TTRfan	8	5915	Mar 10, 2024 by TTRfan
	STICKY: Essential workshop tools! Please add yours to the thread... (Preview) Thread repair kits. These have got me out of trouble on a regular basis! Available quite cheaply on eBay. For the manufacturer's page - see here	TTRfan	30	24884	Jan 22, 2024 by Ttboof
	STICKY: Output of stator (AC magneto generator) and wattage used by bulbs, etc. (Preview) So, I'm looking for more power! I have a '94 raid. I am hoping to add electric grips and an electric vest. Grips run at about 60 watts. That's almost half of what the stator produces. Are there any aftermarket stators for the bike? Am I looking at a rebuild?	Forgorin	10	4588	Jan 3, 2024 by Ttboof
	STICKY: Basic tool kit & spares. What to carry on a ride? (Preview) Years ago when I last went riding I used to fill up my backpack with all types of useless crap that was heavy and probably only usefull on everyone elses bikes. What basic tools and spares specifically suited to a TTR should I carry as a minimum? Generally we wouldn't venture anymore than about 100km...	kylarama	18	17333	Dec 2, 2017 by TerryK
	Continuing saga of PO55 (Preview) I am in the process of putting the engine back together, having had the bore de glazed and new piston rings installed: the instructions indicate to fit an 'O' ring on the base of the cylinder and the new gasket below the 'O' ring. Is this correct; it doesn't feel like that will make a good seal! The 'o' ring...	Susan Parker	7	108	3 days ago by Susan Parker
	Valve guides replacement specialist (Preview) Hi any recommendations for someone to replace my valve guides ? Cheers . Uk and north preferred	rdchair	1	55	6 days ago by JOHNYBOY
	Dreaded clunk . Plus kickstart locking up engine . (Preview) Hi all . Help please . 🙏 bike was running great trail riding at the weekend . Went to start to move up step in garden and it let out an awfull mechanical clunk . I tried to just turn over with kickstart and it was locked . Rocked bike and kick went down once then locked again . Stripped first cover off , all cogs i...	rdchair	13	216	7 days ago by rdchair
	identification help please (Preview) I am currently building a 2004 TT250R engine but I am not sure what goes in the two holes pointed to in the attached picture. The holes are behind the clutch and the only picture I can find in on the TTR250 website and they look like rubber patches, the top one appears to have a smaller hole in it. My best gues...	Dudley	4	137	8 days ago by ttr steve
	Carb slightly leaking (Preview) Hello all. Just wondered if anyone had ever had a problem with a slight leak in the carb when standing and not even running. I think (not sure at all) it may be coming from the lid where you access the diaphragm (photo attached). I took the carb off and then tightened everything up. However, still leaki...	MattPass	4	181	April 20th by ttr steve
	Rusted fuel tank (Preview) My fuel tank has rusted through from where the seat has been rubbing on it. Previous owner must have left it bare metal like that for quite a while and there are two holes on the one side. I've attacked it with a wire brush attachment and this is the result: What would you all recommend I do to fix this? I h...	robject33	2	107	April 10th by robject33
	Speed indication wildly fluttering RAID magnet or sensor? (Preview) Just started a couple days ago, noted that my speed was fluttering by up to 20kph, now, wildly. I even saw it at 170kph today which is obviously impossible. Can some wise head advise, is this likely to be the magnet in process of breaking up or the sensor malfunctioning?	Texas	1	119	April 4th by ttr steve
	Fork seals (Preview) At last a problem with the TTR, near side fork oil seal badly gone, looks a fairly straight forward job, just wondering best place to get the seals and what oil to use. and anything I should be aware of. thanks.	wobbly	7	269	April 2nd by wobbly
	LED indicator flasher relay 2004 blue tank (Preview) Good afternoon all i hope you are all well, i have a 2004 blue tanked ttr250 that came to me with LED indicators problem is they don't flash just stay on as a solid amber light has anyone got a link to a relay that is meant for LED winkers, I have tried the old post links but they are not active links anymore. ...	MichaeltT	3	456	April 1st by Texas
	Flat (Preview) Checked the bike before a Friday ride tomorrow. And had a flat back tire . I can now say don't buy cheap tubes they perish .	Ttboof	5	204	March 13th by TTRfan
	Crankshaft Assembly Replacement (Preview) After several years delay (!), I finally completed my sidelined top-end rebuild. All new parts (Wossner piston kit), all machine work sent out to a first-class machinist, 1mm over bore, new valves, cam sprockets, cam chain, etc. Set cam timing meticulously. Before reassembly, I checked the big-e...	dlowenst	7	209	March 12th by tripodtiger
	Engine cutting out & no restarting :0 (Preview) Ok. My TTR has developed an annoying habit. It has cut out a dozen times at idle over the past few weeks, so I'm asking for ideas on what might be causing it. Today I took it for a 10-15 minute urban run at 30-40 mph, a 2 mile return trip up a dual carriage way at +60 mph, and finished off with start / stop, 1/4 mil...	Dan-in-a-Van	6	561	March 12th by tripodtiger
	Exhaust stud repair. (Preview) After doing the starter clutch & kick starter, I re-fitted the exhaust, as you do. Got the torque wrench onto the exhaust studs and it wouldn't tighten even on about 8 lb.ft. Oh well, **** happens. Any interim repair, other than helicoil? I have a spare head that I will have serviced and fit so I c...	tripodtiger	2	317	March 12th by tripodtiger
	Where's all the oil going? (Preview) I am now the owner of PO55 OTS; and very happy with this lovely bike - apart from the mystery of the disappearing oil! There is no evidence of oil leaking, it does not smoke but at the end of every ride ( usually about 50 miles of gentle, Cornish lanes) I have to add at least 100ml of oil just to get the level vis...	Susan Parker	33	710	February 1st by AussieChookchaser
	Not starting (Preview) Hey all, My bike started running rough, bogging quite badly. Took it to a professional who said the rubber joint between the carb and engine neeeded replacing. Picked it up and it seemed to be running okay when I started it before leaving. Tried taking it out for a ride a couple of weeks later and it start...	robject33	2	230	December 29th by robject33
	Raid Frame Paint Code? (Preview) Hello gang, does anyone have a paint code for the frame paint for the GREY RAID FRAME, mines the green tanked mode. Even if‘s a close match it would be greatly appreciated. tia, Brad.	Brighton Brad	7	373	December 21st by JOHNYBOY
	Ulez Compliant? (Preview) Hi there, I see from the Gov.UK site that my 1999 TTR250 is not ULEZ (Ultra Low Emission Zone) compliant and hence will cost me £12.50 a ride the I get it going again. Just wondering if anyone (London based) has any experience of getting their bikes tested and then getting compliant some how??? Cheers,...	MattPass	4	564	November 30th by wobbly
	Front Wheel Bearings Replacement (Preview) Ive looked through some of the older threads and I cant seem to find anything on replacing the front wheel bearings. Does anyone have a guide for that project? Also the torque specs for the axle nut and pinch bolts. Any help would be greatly appreciated. Thank y'all in advanced as always.	yamahalife	13	760	November 25th by mossproof
	parts supplier Australia (Preview) Hi a bit of info that may help some one I have found Yamaha online parts Australia, they're in Sydney and post parts. it's easy to look up the parts and add them to your cart purchase and have them posted. it saves me the 180km round trip to the nearest Yamaha dealer. (found it easier to find the TTR puttin...	Ttboof	6	514	November 19th by tripodtiger
	Speedo not working (Preview) Hello to anyone that can help, issue is that my speedo isn’t working I assume it’s the speed drive something with the gears need a quick fix for her to get registered.	Isaac	3	415	Nov 8, 2024 by TTRfan
	Tyres ( 1 2 3 ) (Preview) I would like some advice on tyres as soon I will be ready for a new set soon I have had the Mitas on both front and rear whilst I found them very good off road I found them quite slippery when riding on the road and did come off quite a few times now I don't know whether it was me but maybe I need to try something di...	The Drifter	109	27769	Oct 30, 2024 by Ttboof
	Parts Question (Preview) So I just purchased my TTR last Friday night and had been sitting for 2 years. I pulled the carb off and the front of the carb where it attaches to the cylinder head the rubber boot was splitand had tape around it. Does anyone know if they sell just the rubber boot or do I have to buy the entire piece that mount...	yamahalife	5	427	Oct 22, 2024 by Ttboof
	Ttr 250 inner clutch basket wear (Preview) Hi all, Roberta and I shipped the poor ttr250s back from South America, it really wasn't worth it from a financial perspective but I do like my one! I am just starting on refreshing it enough to ride again before next year tidying it up properly. I was just replacing the stretched cam chain and notice...	dlee22	3	343	Oct 22, 2024 by Ttboof
	After-market camshafts and s/s valves (Preview) Many thanks to Igor for finding the Web Cam site - see here http://www.webcamshafts.com/ They offer two different camshaft sets as shown below. Anyone heard of the company or tried their camshafts?	TTRfan	3	3031	Oct 18, 2024 by tripodtiger
	Adjusting Clutch actuator arm (Preview) I am going to replace the clutches on the bike next weekend. I understand how to do that but I cannot figure out how you adjust that arm while the motor is still in the bike. I cannot see the mark the arm is suppose to line up with. Has anyone done this on the bike without removing the motor? Is there anything I...	yamahalife	5	457	Oct 9, 2024 by deefer
	What’s this hole in the front side of the engine? (Preview) What’s this hole in the front side of the engine?	RAIDER	11	520	Oct 7, 2024 by ttr steve
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