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

Terrence R · Terrence R

Was checking my spark plug just as a follow up. While I was threading it back in, I noticed 2 little holes in the cylinder head right on the back side of where the spark sits. They look like a couple slices about 1cm long each. One on the I take side, the other on the exhaust side. No oil was around them, so I'm s...

iancarswell66 · iancarswell66

Can anybody please tell me if the tab washer in the speedo drive of the blue 04's should be flat. My speedo's not working and the problem is in the drive somewhere. The tab washer's seem to face uphill. The three of them. Many thanks.

Flying Dodo · Flying Dodo

Hi, I'm probably being stupid but where is the 'sticky' or instructions on fitting a lowering link please? I bought one ages ago from Brian and can'tg find any instructions - just thought I'd read them first before I do it wrong thanks Dave

barra8 · barra8

Just thought i'd upload a few pics of the ''special'' tools that i made. It was pretty simple & cost me nothing. I have already used the clutch boss remover & it works great. Had to do little revision with the clutch holding tool. The reason for this is that i was worried it would snap the clutc...

j180 · j180

I guess this is not a new topic but any suggestions would be appreciated. I stripped the caliper off on Sunday the piston moves ok, I cleaned everything and put it back together but it is still sticking. I noticed the pins that hold the pads were corroded a bit, not sure if this is the cause though. Cheers...

Terrence R · Terrence R

I'm guessing this could be a contributer on why my bike is running poorly. I found a break in my air box boot. Well, it's at the top, right where the little bottle thingy attaches to it. Is this removable? Or do I need to find the entire boot? Maybe I can get away with siliconing around it? It's splitting awa...

davecambo · davecambo

just wondering what the max range is for a new (2011) model. i just got mine out for its first highway/firetrail/singletrack adventure and got 130km or around 80 miles to a tank including reserve. is this going to get better once the engine wears in? mods so far = 13 tooth front sprocket, removal of snor...

TTRfan · TTRfan

The photo is from a TTR250 engine I am just stripping down to check. The engine is at TDC and the cam sprocket lines should be parallel with the head. This is the second engine in a week where a stutter and slight misfire has been caused by incorrect valve timing. The other case was a customer who had spent s...

andy m · andy m

Anyone know who has these on the shelf?

TTRfan · TTRfan

Just a quick tip for when you are doing a spot of TTR maintenance. Check that the one way valves are working. I have just put a carb back on a TTR I am working on and thought I would check them - both were blocked! Not unusual in my experience. Just pop them off and check you can blow down through but that when y...

dern · dern

Hi, I'm in the process of overhauling a new to me 94 ttr250. I fix one thing and find more stuff to fix and I can't let these things go... I'll get to the end of the list soon ;) Anyway, brakes... my front brakes are very poor. They feel spongy and the lever goes to the bar. It doesn't feel like it's losing press...

glynn4623 · glynn4623

does anyone know why the older models and newer models have a different clutch?? and can you interchange them I.e. put an old style clutch into a newer engine ?? or was the smaller clutch just for the raid ??

glynn4623 · glynn4623

hi all I noticed recently whilst doing some work on the bike that when I turn the engine over manually(either by turning rear wheel or by turning flywheel bolt with a socket) that the starter motor turns aswell. my understanding is that the sprag clutch is there to stop the engine from turning the start...

Fladdem · Fladdem

I just got some wheel bearing today, I went to change them after work. I started it and all was going smoothly until I realised that the wheel spacer on the sprocket side has corroded to the inner bearing race. I can't remove the spacer and I can't progress any further until it is gone. How can I remove the...

shack · shack

Hi all, after a sticky plunger I took the top of my front res, it looks like it hadn't been off for a while, one of the skrews wouldn't budge and ended up getting a little mangled so had to drill it out. it gets worse I lifted the lid to find a gellatineaus green/brown layer so sucked it worst out (syringe not...

ERBS · ERBS

my exhaust is very tight and wont come off, any other way of removing the tail pipe without having to bash the the crap out of it?

low profile tyres · Ianto

does anyone know of a rear tyre for a 2001 ttr250 that is not very high at the moment I have a Pirelli MT 43 its just about legal I am a bit of a shorty I have fitted a lowering link cut the seat down, slackened the shock off on the top, slid the forks up through the yoke has far has I can, I can just reach the gro...

Jell · Jell

Emptied tank, new gas, new filter. New battery, new plug. Sprayed carburetor starter in carb and bike turns over strong and tries but never starts. Checked carb and it appears clean, but should I soak?

DRZRIDER · DRZRIDER

Just purchased a 2000 TTR 250 and has air box and exhuast "mods". The air box I can repair, the exhuast is empty, as in there is nothing inside the can, and the end cap is just the chrome peice with the 1.5 in. hole. I need to have it USFS approved to ride forest service roads and trails. What was in...

MarkShelley · MarkShelley

I have been given a used unit and the gears are completely seized. I have removed the circlip and tab washer but the gear which slides over the tube will not budge. It is currently bathing in Plus Gas overnight. Amy tips to aid removal? The worm gear that the cable slides into looks like it has a VERY small...

matador · matador

Iain's TTR as developed a clinking sound on the mono shock on rebound only? We checked all the bushes and can feel no movement. It doesn't make a sound when pressing down, only a click on return? Just wondered if anybody else had this problem. Otherwise both bikes running well.

Lumbricus · Lumbricus

Hello, I have just installed the petrol tap/ petc0ck rebuild kit to find that the tap is now incredibly difficult to turn. I can just about move it with my fingers and it's easier with pliers. Should I have used some sort of grease on the new rubber seal I installed? Or will it get a bit easier with use? Th...

nwrider · nwrider

Finally took my 06 ttr to a mechanic, i am going thru just brake light filiments, not running lights. He thinks it could be vibrations of riding at highway speeds. i am sick of changing bulbs every couple of weeks. I am thinking about upgrading to an acerbis xled tailight or the drc moto led inner kit. ...

tim1 · tim1

Hello folks, I came across a yamaha workshop manual recently and noted the main jet size is listed as 137, mine has a 147 and an FMF powercore pipe, does this sound correct as I am diagnosing a dying issue after a short "coshing", starts again easily with a little choke (weak), the pilot scre...

Michael TTR250 · Michael TTR250

Hey guys, I only ride on dirt (no need to take road riding into the decision making process) and run Heavy duty tubes 18-20 psi on trails with lots of sharp broken rocks. Between myself and a mate we have had 4 flats and are looking for a better setup. The options I have come up with seem to be Mousse, Ti...

Goalkeeper · Goalkeeper

Does anybody know if the rear wheel complete with sprocket and brake disc from the older ttr's (purple rim) are compatible with the newer ttr's (2004). Many thanks. Mark.

leigh · leigh

Hey guys, loving this bike and got more questions dropped the front forks 19mm through the triple clamps, has a 50mm lowering link in the back and handles fantastic off road now. and on road up to about 80-90kph. once i go over 90 it seems to get really light in the front end, steering is almost a bit t...

TTRfan · TTRfan

Hi folks I need some advice please. A customer asked for a quote for 4 valve lifters - as Yamaha calls them. I looked up the fiche and it showed two different parts - a blue and a red Anyone know the difference please? Brian

doghouse07 · doghouse07

I have a 2004 TTR 250. Right in front of the head cover there is a hole. When warm there is oil that kinda percolates out and drips on the exhaust and smokes. It looks like there should be a bolt in there, but every part finder I see has the hole but no bolt identified. Can someone please tell me what this...

Flying Dodo · Flying Dodo

Having just rebuilt my TTr top end it all runs but only in neutral , as soon as I put it in gear the engine cuts - it won't restart or even turnover except in neutral - so how should I eliminate the problems to find the source?? I assume it's either a sensor in the gearbox, side stand or clutch switch but wher...

Topic		Started By	Replies	Views	Last Post
	Please tell me this is normal! (Preview) Was checking my spark plug just as a follow up. While I was threading it back in, I noticed 2 little holes in the cylinder head right on the back side of where the spark sits. They look like a couple slices about 1cm long each. One on the I take side, the other on the exhaust side. No oil was around them, so I'm s...	Terrence R	2	402	Jun 7, 2014 by Terrence R
	Tab Washers (Preview) Can anybody please tell me if the tab washer in the speedo drive of the blue 04's should be flat. My speedo's not working and the problem is in the drive somewhere. The tab washer's seem to face uphill. The three of them. Many thanks.	iancarswell66	11	1256	Jun 6, 2014 by chrisstdt
	Lowering Link (Preview) Hi, I'm probably being stupid but where is the 'sticky' or instructions on fitting a lowering link please? I bought one ages ago from Brian and can'tg find any instructions - just thought I'd read them first before I do it wrong thanks Dave	Flying Dodo	4	620	Jun 6, 2014 by Flying Dodo
	Homemade ''Special'' tools (Preview) Just thought i'd upload a few pics of the ''special'' tools that i made. It was pretty simple & cost me nothing. I have already used the clutch boss remover & it works great. Had to do little revision with the clutch holding tool. The reason for this is that i was worried it would snap the clutc...	barra8	36	3740	Jun 4, 2014 by TT-R250M
	Sticking rear brake (Preview) I guess this is not a new topic but any suggestions would be appreciated. I stripped the caliper off on Sunday the piston moves ok, I cleaned everything and put it back together but it is still sticking. I noticed the pins that hold the pads were corroded a bit, not sure if this is the cause though. Cheers...	j180	9	1087	Jun 1, 2014 by j180
	Break in air box boot bottle... (Preview) I'm guessing this could be a contributer on why my bike is running poorly. I found a break in my air box boot. Well, it's at the top, right where the little bottle thingy attaches to it. Is this removable? Or do I need to find the entire boot? Maybe I can get away with siliconing around it? It's splitting awa...	Terrence R	1	462	May 30, 2014 by Terrence R
	milage (Preview) just wondering what the max range is for a new (2011) model. i just got mine out for its first highway/firetrail/singletrack adventure and got 130km or around 80 miles to a tank including reserve. is this going to get better once the engine wears in? mods so far = 13 tooth front sprocket, removal of snor...	davecambo	11	2760	May 29, 2014 by TT-R250M
	Valve timing one tooth out (Preview) The photo is from a TTR250 engine I am just stripping down to check. The engine is at TDC and the cam sprocket lines should be parallel with the head. This is the second engine in a week where a stutter and slight misfire has been caused by incorrect valve timing. The other case was a customer who had spent s...	TTRfan	9	1590	May 27, 2014 by matador
	Alternator cover gasket. 4GY-15451-00 (Preview) Anyone know who has these on the shelf?	andy m	3	449	May 26, 2014 by andy m
	One-way valves on carb breather tubes (Preview) Just a quick tip for when you are doing a spot of TTR maintenance. Check that the one way valves are working. I have just put a carb back on a TTR I am working on and thought I would check them - both were blocked! Not unusual in my experience. Just pop them off and check you can blow down through but that when y...	TTRfan	0	727	May 25, 2014 by TTRfan
	Couple of questions - brakes and oil leak (Preview) Hi, I'm in the process of overhauling a new to me 94 ttr250. I fix one thing and find more stuff to fix and I can't let these things go... I'll get to the end of the list soon ;) Anyway, brakes... my front brakes are very poor. They feel spongy and the lever goes to the bar. It doesn't feel like it's losing press...	dern	13	1471	May 15, 2014 by Padowan
	clutch question (Preview) does anyone know why the older models and newer models have a different clutch?? and can you interchange them I.e. put an old style clutch into a newer engine ?? or was the smaller clutch just for the raid ??	glynn4623	5	1301	May 13, 2014 by hanzo
	yet another sprag clutch question (Preview) hi all I noticed recently whilst doing some work on the bike that when I turn the engine over manually(either by turning rear wheel or by turning flywheel bolt with a socket) that the starter motor turns aswell. my understanding is that the sprag clutch is there to stop the engine from turning the start...	glynn4623	8	940	May 13, 2014 by hanzo
	Wheel Bearings, HELP!!! (Preview) I just got some wheel bearing today, I went to change them after work. I started it and all was going smoothly until I realised that the wheel spacer on the sprocket side has corroded to the inner bearing race. I can't remove the spacer and I can't progress any further until it is gone. How can I remove the...	Fladdem	6	973	May 12, 2014 by ttboof
	Brake reservoir issues (Preview) Hi all, after a sticky plunger I took the top of my front res, it looks like it hadn't been off for a while, one of the skrews wouldn't budge and ended up getting a little mangled so had to drill it out. it gets worse I lifted the lid to find a gellatineaus green/brown layer so sucked it worst out (syringe not...	shack	8	1036	May 12, 2014 by dern
	exhaust removal (Preview) my exhaust is very tight and wont come off, any other way of removing the tail pipe without having to bash the the crap out of it?	ERBS	12	1463	May 11, 2014 by Flying Dodo
	low profile tyres (Preview) does anyone know of a rear tyre for a 2001 ttr250 that is not very high at the moment I have a Pirelli MT 43 its just about legal I am a bit of a shorty I have fitted a lowering link cut the seat down, slackened the shock off on the top, slid the forks up through the yoke has far has I can, I can just reach the gro...	Ianto	19	1439	May 10, 2014 by Ianto
	Bike fires and tries but won't start (Preview) Emptied tank, new gas, new filter. New battery, new plug. Sprayed carburetor starter in carb and bike turns over strong and tries but never starts. Checked carb and it appears clean, but should I soak?	Jell	9	3101	May 9, 2014 by Jell
	What "WAS" inside the exhaust? (Preview) Just purchased a 2000 TTR 250 and has air box and exhuast "mods". The air box I can repair, the exhuast is empty, as in there is nothing inside the can, and the end cap is just the chrome peice with the 1.5 in. hole. I need to have it USFS approved to ride forest service roads and trails. What was in...	DRZRIDER	11	981	May 8, 2014 by DRZRIDER
	Seized speedo drive (blue bike of course) (Preview) I have been given a used unit and the gears are completely seized. I have removed the circlip and tab washer but the gear which slides over the tube will not budge. It is currently bathing in Plus Gas overnight. Amy tips to aid removal? The worm gear that the cable slides into looks like it has a VERY small...	MarkShelley	4	1124	May 8, 2014 by Pinman
	mono shock - click on rebound? (Preview) Iain's TTR as developed a clinking sound on the mono shock on rebound only? We checked all the bushes and can feel no movement. It doesn't make a sound when pressing down, only a click on return? Just wondered if anybody else had this problem. Otherwise both bikes running well.	matador	2	534	May 8, 2014 by TTRfan
	Petrol tap hard to turn (Preview) Hello, I have just installed the petrol tap/ petc0ck rebuild kit to find that the tap is now incredibly difficult to turn. I can just about move it with my fingers and it's easier with pliers. Should I have used some sort of grease on the new rubber seal I installed? Or will it get a bit easier with use? Th...	Lumbricus	5	675	May 5, 2014 by Lumbricus
	f*&^ng tail light, (Preview) Finally took my 06 ttr to a mechanic, i am going thru just brake light filiments, not running lights. He thinks it could be vibrations of riding at highway speeds. i am sick of changing bulbs every couple of weeks. I am thinking about upgrading to an acerbis xled tailight or the drc moto led inner kit. ...	nwrider	1	557	May 5, 2014 by TT-R250M
	Dies after a short "coshing" (Preview) Hello folks, I came across a yamaha workshop manual recently and noted the main jet size is listed as 137, mine has a 147 and an FMF powercore pipe, does this sound correct as I am diagnosing a dying issue after a short "coshing", starts again easily with a little choke (weak), the pilot scre...	tim1	6	657	May 1, 2014 by tim1
	Some advice needed on Mousse/Tire balls/Ultra Heavy Duty tube (Preview) Hey guys, I only ride on dirt (no need to take road riding into the decision making process) and run Heavy duty tubes 18-20 psi on trails with lots of sharp broken rocks. Between myself and a mate we have had 4 flats and are looking for a better setup. The options I have come up with seem to be Mousse, Ti...	Michael TTR250	19	3033	Apr 29, 2014 by Paul13
	Wheel Compatibility (Preview) Does anybody know if the rear wheel complete with sprocket and brake disc from the older ttr's (purple rim) are compatible with the newer ttr's (2004). Many thanks. Mark.	Goalkeeper	11	1566	Apr 27, 2014 by TT-R250M
	front end twitchy at high speed. (Preview) Hey guys, loving this bike and got more questions dropped the front forks 19mm through the triple clamps, has a 50mm lowering link in the back and handles fantastic off road now. and on road up to about 80-90kph. once i go over 90 it seems to get really light in the front end, steering is almost a bit t...	leigh	31	2101	Apr 24, 2014 by TT-R250M
	Cam buckets or "Valve Lifters" query (Preview) Hi folks I need some advice please. A customer asked for a quote for 4 valve lifters - as Yamaha calls them. I looked up the fiche and it showed two different parts - a blue and a red Anyone know the difference please? Brian	TTRfan	8	895	Apr 16, 2014 by TT-R250M
	Percolating oil??? Someone please help (Preview) I have a 2004 TTR 250. Right in front of the head cover there is a hole. When warm there is oil that kinda percolates out and drips on the exhaust and smokes. It looks like there should be a bolt in there, but every part finder I see has the hole but no bolt identified. Can someone please tell me what this...	doghouse07	4	471	Apr 16, 2014 by doghouse07
	TTR 250 won't run in gear (Preview) Having just rebuilt my TTr top end it all runs but only in neutral , as soon as I put it in gear the engine cuts - it won't restart or even turnover except in neutral - so how should I eliminate the problems to find the source?? I assume it's either a sensor in the gearbox, side stand or clutch switch but wher...	Flying Dodo	7	2167	Apr 14, 2014 by Flying Dodo
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