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

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...

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...

Topic		Started By	Replies	Views	Last Post
	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	762	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	1795	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	2081	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	571	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	2233	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	4143	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	5549	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	1024	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	530	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	1538	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	764	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	4193	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	1389	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	610	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	3037	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	2011	May 27, 2014 by matador
	Alternator cover gasket. 4GY-15451-00 (Preview) Anyone know who has these on the shelf?	andy m	3	579	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	879	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	1655	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	1523	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	1109	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	1136	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	1208	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	1689	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	1653	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	3674	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	1173	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	1314	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	661	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	826	May 5, 2014 by Lumbricus
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