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

TTRfan · TTRfan

My 325 looks after me very well so, with an MOT soon due, I decided to treat it to some new bits There was a bit of play in the rear wheel bearings so I stripped them out and the cause was obvious. Water had got in and, with it, the dreaded rust The cause of the water ingress was grooved spacers allowing water...

Pitley · Pitley

Hi all. I have just bought an 03 ttr 250, I have a problem with that the bike wont rev out, it starts ok, and rides off the pilot jet ok but soon after more throttle opening the thing starts spluttering. Ive had the carb off and cleaned it out,( even tho it was clean), changed the plug, put fresh fuel in, but st...

hertsrider · hertsrider

Morning - can the oracle of knowledge help me solve a problem on my beloved TTR?! I recently replaced the rocker cover gasket on the TTR as i had a slight weep which i believe went well....however....as you can see from the picture attached, i have a leak still and this time i think it's coming from the cir...

Padowan · Padowan

Does anyone use plain, non O/X-ring chains on their TTR, if so, what sort of conditions do you generally ride (dry, wet, mud, dust etc)? I've got a tub of Putoline boil in chain wax that I use on my push-bike chains and thought that with decent chain cleaning and boiling in the wax would provide adequate p...

leigh · leigh

Hey all. Love this bike. Still saving for a fmf q4 pipe. In the meantime is it worth cutting out the restrictor in the end of the header pipe with the standard Aussie muffler? Will it make any difference power wise? Previous owner already cut snorkel out Thanks guys Leigh

Tone · Tone

Does anyone know if there is any difference between the uk headlamp lense and those used in Europe? I am thinking of taking my bike out to France and leaving it at our French house which would mean re-registering and getting through the French scrutineering process. As the speedo has both miles and kil...

widge · widge

I hope you do not mind but having just picked up my bike (2003) I have a few maintenance questions. 1. The top exhaust thread is stripped so my local mechanic is going to helicoil it and ordered new studs from Brian. 2. The is oil leaking from the decompresser plug so ordered a new metal one from Brian. Tr...

colo · colo

Si alguien es tan amable de decirme las medidas de ambos retenes, desde ya muchas gracias.

TTRfan · TTRfan

I am helping a friend bring his TTR back to legality after looping it out on an enduro a couple of weeks ago. Hopefully the photos are self explanatory: It isn't possible just to put a long bolt and penny washer in from the top as it stops the stop/tail light bolting down fully. Has anyone got an elegant sol...

TTRfan · TTRfan

I am helping out a friend getting his blue TTR back into shape and noticed peculiar wear on the chain slider and swing arm end cap. I took off the front sprocket cover and the cause was immediately evident - the sprocket had been put on the wrong way around as you can see in the pic above. The sprocket had bee...

Padowan · Padowan

Being air cooled I can imagine the ttr might run a touch hotter than something water cooled, but does anyone know hoy it should run? I ask because since my rebuild (new rings, head/base gaskets, lapped valves, new VSOs) I think the bike runs hotter than before. Maybe there's more heat generated from...

superfrog · superfrog

Hey folks. Just bought a 2006 ttr250 with about 5-10 hours. Completely unmolested and in pristine condition. Still has original battery which needs replacing but I ran into an issue. It wouldn't start so I downloaded the manuel and traced the problem back to the starter switch. To verify this is the...

wobbly · wobbly

Just wondering if anyone has come across this problem, went to use the old girl yesterday, put key in the ignition but no neutral light and absalutely no electrics anywhere. Battery is fully charged and all leads running away from battery are tight and sound. Was fine last time I used her not long ago. ...

ANDY-501 · ANDY-501

Hi all, I just got a TTR today and rode it home and the clutch is slipping at higher speed. The guy I got it from said the clutch was replaced along with clutch basket a few months ago. The adjustment on the hand lever has been adjusted to its limit and its still not good. The clutch is only biting right at the...

andy m · andy m

Looking at a std front pipe at the tail end of it appears to be a restrictor. Has anyone cut theirs out ??

Moose · Moose

Does a 2006 TTR auto decompress when you try and start it.. Is it correct that it only decompresses under a certain rpm.. I ask this because how do you go doing a compression test on one of these.. Best i get is 110psi unless the tester is rooted. One would think this bike of mine would be hard to start and blo...

The Drifter · The Drifter

Recently I have had a new starter motor and idler gear fitted sometimes when I switch engine off there is a clunk is this normal ??? it does not do it every time I have a ttr250 endure.

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...

Topic		Started By	Replies	Views	Last Post
	New wheel bearings, seals, spacers plus chain and sprocket set (Preview) My 325 looks after me very well so, with an MOT soon due, I decided to treat it to some new bits There was a bit of play in the rear wheel bearings so I stripped them out and the cause was obvious. Water had got in and, with it, the dreaded rust The cause of the water ingress was grooved spacers allowing water...	TTRfan	3	1491	Jul 7, 2014 by ttboof
	Starts but wont rev out (Preview) Hi all. I have just bought an 03 ttr 250, I have a problem with that the bike wont rev out, it starts ok, and rides off the pilot jet ok but soon after more throttle opening the thing starts spluttering. Ive had the carb off and cleaned it out,( even tho it was clean), changed the plug, put fresh fuel in, but st...	Pitley	21	3148	Jul 5, 2014 by claytronic
	Oil weep / leak (Preview) Morning - can the oracle of knowledge help me solve a problem on my beloved TTR?! I recently replaced the rocker cover gasket on the TTR as i had a slight weep which i believe went well....however....as you can see from the picture attached, i have a leak still and this time i think it's coming from the cir...	hertsrider	11	3103	Jul 4, 2014 by hertsrider
	Non O-Ring/X-Ring Chains (Preview) Does anyone use plain, non O/X-ring chains on their TTR, if so, what sort of conditions do you generally ride (dry, wet, mud, dust etc)? I've got a tub of Putoline boil in chain wax that I use on my push-bike chains and thought that with decent chain cleaning and boiling in the wax would provide adequate p...	Padowan	1	987	Jul 2, 2014 by ttboof
	Exhaust question (Preview) Hey all. Love this bike. Still saving for a fmf q4 pipe. In the meantime is it worth cutting out the restrictor in the end of the header pipe with the standard Aussie muffler? Will it make any difference power wise? Previous owner already cut snorkel out Thanks guys Leigh	leigh	8	1073	Jun 30, 2014 by petenz
	Continental headlamp lense for 2003 TTr250R (Preview) Does anyone know if there is any difference between the uk headlamp lense and those used in Europe? I am thinking of taking my bike out to France and leaving it at our French house which would mean re-registering and getting through the French scrutineering process. As the speedo has both miles and kil...	Tone	0	593	Jun 29, 2014 by Tone
	New owner with loads of questions! (Preview) I hope you do not mind but having just picked up my bike (2003) I have a few maintenance questions. 1. The top exhaust thread is stripped so my local mechanic is going to helicoil it and ordered new studs from Brian. 2. The is oil leaking from the decompresser plug so ordered a new metal one from Brian. Tr...	widge	8	1334	Jun 27, 2014 by BM Steve
	Retenes rueda delantera - Front Wheel Seals (Preview) Si alguien es tan amable de decirme las medidas de ambos retenes, desde ya muchas gracias.	colo	12	3301	Jun 27, 2014 by colo
	Rear mudguard fixing pulled through (Preview) I am helping a friend bring his TTR back to legality after looping it out on an enduro a couple of weeks ago. Hopefully the photos are self explanatory: It isn't possible just to put a long bolt and penny washer in from the top as it stops the stop/tail light bolting down fully. Has anyone got an elegant sol...	TTRfan	12	1019	Jun 24, 2014 by TTRfan
	First time for everything! (Preview) I am helping out a friend getting his blue TTR back into shape and noticed peculiar wear on the chain slider and swing arm end cap. I took off the front sprocket cover and the cause was immediately evident - the sprocket had been put on the wrong way around as you can see in the pic above. The sprocket had bee...	TTRfan	4	805	Jun 21, 2014 by Markvan
	How hot should the TTR run? (Preview) Being air cooled I can imagine the ttr might run a touch hotter than something water cooled, but does anyone know hoy it should run? I ask because since my rebuild (new rings, head/base gaskets, lapped valves, new VSOs) I think the bike runs hotter than before. Maybe there's more heat generated from...	Padowan	6	1894	Jun 21, 2014 by Terrence R
	Starter Switch on Handlebar (Preview) Hey folks. Just bought a 2006 ttr250 with about 5-10 hours. Completely unmolested and in pristine condition. Still has original battery which needs replacing but I ran into an issue. It wouldn't start so I downloaded the manuel and traced the problem back to the starter switch. To verify this is the...	superfrog	14	2200	Jun 19, 2014 by superfrog
	Electrics dead. (Preview) Just wondering if anyone has come across this problem, went to use the old girl yesterday, put key in the ignition but no neutral light and absalutely no electrics anywhere. Battery is fully charged and all leads running away from battery are tight and sound. Was fine last time I used her not long ago. ...	wobbly	6	615	Jun 15, 2014 by texasT
	Clutch slipping problem (Preview) Hi all, I just got a TTR today and rode it home and the clutch is slipping at higher speed. The guy I got it from said the clutch was replaced along with clutch basket a few months ago. The adjustment on the hand lever has been adjusted to its limit and its still not good. The clutch is only biting right at the...	ANDY-501	7	2308	Jun 15, 2014 by TTRfan
	Restrictor in front pipe. (Preview) Looking at a std front pipe at the tail end of it appears to be a restrictor. Has anyone cut theirs out ??	andy m	14	4496	Jun 13, 2014 by TT-R250M
	Compression (Preview) Does a 2006 TTR auto decompress when you try and start it.. Is it correct that it only decompresses under a certain rpm.. I ask this because how do you go doing a compression test on one of these.. Best i get is 110psi unless the tester is rooted. One would think this bike of mine would be hard to start and blo...	Moose	16	5689	Jun 11, 2014 by TTRfan
	Is my issue normal as well ???? (Preview) Recently I have had a new starter motor and idler gear fitted sometimes when I switch engine off there is a clunk is this normal ??? it does not do it every time I have a ttr250 endure.	The Drifter	10	1069	Jun 9, 2014 by hanzo
	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	573	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	1601	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	809	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	4297	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	1463	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	654	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	3109	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	2083	May 27, 2014 by matador
	Alternator cover gasket. 4GY-15451-00 (Preview) Anyone know who has these on the shelf?	andy m	3	620	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	923	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	1724	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	1577	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	1162	May 13, 2014 by hanzo
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