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

TTRfan · TTRfan

I was just stripping out a cylinder head tonight and found a couple of very odd "things" under an exhaust valve - see photos below. I thought first off they were shells but I crushed them and the walls were thick and crumbly - almost like rotten wood. Any ideas what they are or were? Brian

raz1966 · raz1966

i got no key for my steering lock, any idea where i can get one from? is there a number stamped somewhere?

Tarbone · Tarbone

Good morning everyone! I have a 2000 Yamaha ttr250 that I recently acquired from someone that knew nothing about proper maintenance of anything mechanical I noticed the rear shock is very soft on my bike even with the remote damper dialed all the way up to the stiffest settings. I also noticed lots...

TTRfan · TTRfan

Every now and again I get a "First time I have seen that!" moment and that happened recently when I was replacing a weepy cylinder base gasket on a friend's engine. Having removed the cylinder bolts and started to move the cylinder some emulsified oil (with water droplets in it) dribbled out! Blow me d...

Lichi · Lichi

Hi guys, Im new to the forum so greetings for everybody. Im from Argentina staying/living in Thailand now. Here is my story: In my country I own a 1999 CBR 600 F x and I love motorbikes. This is not my first time to Thailand so some years ago I started building a relationship with a thai mechanic. I now consi...

Ammity · Ammity

[video=https://www.youtube.com/watch?v=PX_weThYIRg&feature=y...

devon_rich · devon_rich

Due for a new rear disc, the shop lists 3 different ones. Apart from bling levels is there any difference in them?

BM Steve · BM Steve

I just purchased one of these today, so should arrive a 2-3 weeks from the US I don't have enough strength in my wrists to fit a D606 rear tyre, I can do the front, but the back, just can't manage it. I can get them off OK, just not the reverse. After seeing this thing I was sold. [video=https://youtu.be/8WR...

honda15i · honda15i

Does anybody know what is the size of bearing 93317-32034 or 93315-32053? Seems like these two bearings are the samehttp://www.firstclassmotorcycles.com.au/partFinder/fiche/yamaha/1994/tt250r-ttr250/rear-arm

mossproof · mossproof

Here's an odd one to ponder: I have a Koso digital speedo on one of my ttrs. Battery memory/backup, but powered by the old ignition switched live feed that went to the original speedo (Open Enduro - digital) The way it works is when you turn on the ignition, it powers up the backlight and display. Also pow...

tracker · tracker

The TTR wouldn't start,a clicking sound was coming from the starter relay.I removed and cleaned the terminals but still the same,so off to dealer who wanted over £45 for genuine Yamaha part.So to the breakers i thought,while drooling over the new bikes in the showroom i told them about the relay,i so...

TimAus · TimAus

Hi all, I have pulled the carb out recently on a 2007 TTR250. I have seen a couple of pictures where people have said there is 2 O'Rings under the cover of where the diaphragm and needle are. Is this true for my model? As when I pulled it apart, none fell out. Perhaps they have perished completely? Tim

JVOHV · JVOHV

Does anyone know if applying plasti dip to a cracked carb diaphragm will work to seal pressure? I will eventually replace, but I just spent $75 on carb rebuild parts and don't want to spend another $35 just yet. I assume it would be best to apply to underside of diaphragm due to the suction. Does gas c...

dlee22 · dlee22

Hi There, At the moment the TTR shops supply of valve stem seals are out of stock, does anyone have any other recommendations of where I can get some? - I'd like to rebuild the bike over Christmas break so need them as soon as possible. Thanks Dan

Hp · Hp

Hi all first question after my new purchase 1993 open endure I asked for a fresh MOT on the bike and got the report back that the rear swing arm and rear wheel bearings are shot I have had a look and can only get 2000 plus model rear wheel bearings on next day delivery from wemoto. Are the rear wheels the same o...

dlee22 · dlee22

Hi there, I've got a ttr thats burning oil and got the piston off and would like bit of confirmation of the size. I assume as there is no plus 1mm marker im safe to assume that its standard size. Any advice would be appreciated and if anyone could recommend parts that might be worth replacing whilst in the...

RodYorkttr · RodYorkttr

Please can anyone tell me what this is and where it goes on a TTR...I have no idea!

balin01 · balin01

Hi guys, I am not very happy because I hardly can find anything on the internet for my 1995 Open Enduro. I hope I won't regret buying this old bike. There are parts for later models (1999 upwards) but nothing for old TTRs. My question is are the fork gaiters the same on '99-08 models as on my 1995's? Could I...

mypobox · mypobox

[video=http://youtu.be/iNECB6V4Pd8?list=UUR8ww-Yw96_sxAqhsAknSlg]

locky · locky

http://www.oponeo.co.uk/moto-tyre-details/michelin-enduro-comp-iv-90-90-21-54-r-front-tt/?origin=prodlisting&gclid=CjwKEAiA74qkBRCdrM-6or7U73QSJABCDL9pY8kT1D4wa_4oUvwL-A7sf8JmPXRoSAnFGPbtpAq1JBoC9EHw_wcB

mossproof · mossproof

Every ad I see for a TTR oil pump includes a little semicircular tin guard. Every engine I have opened up has had no such guard fitted Is someone taking them off before I get in there or were they not always fitted? This is my experience on both pre and post Y2K engines. Not sure of the purpose exactly - can an...

Ray Luxury-Yacht · Ray Luxury-Yacht

Hello everyone! I have had my TTR for a couple of months now, but haven't really got to ride her much. I seized the opportunity last weekend however to get a decent ride in for the first time. Despite enjoying the bike, it became clear that it is not carburating too brilliantly. It's ok to ride, don't get m...

TTRHead · TTRHead

I have had a few TTR's over the years but one I bought recently I noticed that its got a grease nipple on the rear shock linkage. I am trying to work out if someone has done this or its a lowering link. the bike sits lower I think than others I have had. But maybe its just me, because I have always adjusted the sp...

Ammity · Ammity

My old man had a box of motul 7100 10w40 leak through his truck today and the company told him to throw it out but he decided to pass it on to me (thank's mate). There are 16 litres of this stuff and I was curious if it was fine to use in the ttr? It's coming into summer here in Australia and it can average around 3...

TTRHead · TTRHead

I have noticed a few times when the fuel is left on over night on the bike I get a weep of fuel on the hole which is at the bottom of the float bowl where you would drain the fuel out once the drain screw was undone....I don't no why this would be surely there is nothing there to wear out?

TTRfan · TTRfan

I recently fitted a rebuilt 250 engine to my own TTR to give it a thorough test before offering it for sale. I was very pleased that it started and ran well but when I parked it up there was a bit of an oil drip under the engine The cam cover gasket and decompressor plug were both dry and closer inspection sho...

TTRfan · TTRfan

I refurbished a TTR for my brother-in-law Keith a few years ago. Great bike and he has been enjoying riding it, when he can't get out on his Duke that is! However, from early on there was an oil leak which we put down to one of the banjos on the external oil line. However, Keith replaced all the washers with...

TTRHead · TTRHead

Would I be ok using a 5w/30 fork oil? I am in the process of changing it. Following Brians excelllent stickie again on changing the fork oil. I noticed when compressing the forks you can hear a squeek, It sounds like the springs making the nosie inside to me. As you push down. But I am guessing it could sti...

Ammity · Ammity

Hey lads, me again (big surprise) symptoms; - My bike will drop revs at idle and even stalls when i pull the clutch in sometimes - It can die if i suddenly blip the throttle off idle - It starts really easily when cold but needs a bit of throttle when hot to start - The exhaust has a hell of a lot of black crap in t...

Dr_B · Dr_B

Wasn't getting any gas in my carb so I inspected the fuel line to find a piece of plastic in there Is there some plastic that's supposed to be in the fuel line to slow it's drip or is this just some random plastic that got pushed in there? Thanks

Topic		Started By	Replies	Views	Last Post
	Peculiar goings on in an exhaust port! (Preview) I was just stripping out a cylinder head tonight and found a couple of very odd "things" under an exhaust valve - see photos below. I thought first off they were shells but I crushed them and the walls were thick and crumbly - almost like rotten wood. Any ideas what they are or were? Brian	TTRfan	7	793	Feb 3, 2017 by Tarbone
	steering lock (Preview) i got no key for my steering lock, any idea where i can get one from? is there a number stamped somewhere?	raz1966	10	2107	Jan 31, 2017 by cassar412
	Rear shock rebuild services in the USA?? (Preview) Good morning everyone! I have a 2000 Yamaha ttr250 that I recently acquired from someone that knew nothing about proper maintenance of anything mechanical I noticed the rear shock is very soft on my bike even with the remote damper dialed all the way up to the stiffest settings. I also noticed lots...	Tarbone	9	1600	Jan 27, 2017 by Tarbone
	Oddity found during engine strips - emulsified oil around front left stud (Preview) Every now and again I get a "First time I have seen that!" moment and that happened recently when I was replacing a weepy cylinder base gasket on a friend's engine. Having removed the cylinder bolts and started to move the cylinder some emulsified oil (with water droplets in it) dribbled out! Blow me d...	TTRfan	1	645	Jan 27, 2017 by Moo
	New user greetings from Thailand and help please! (Preview) Hi guys, Im new to the forum so greetings for everybody. Im from Argentina staying/living in Thailand now. Here is my story: In my country I own a 1999 CBR 600 F x and I love motorbikes. This is not my first time to Thailand so some years ago I started building a relationship with a thai mechanic. I now consi...	Lichi	10	742	Jan 24, 2017 by Lichi
	top end tick noise with video (sorry if same topics exist) (Preview) [video=https://www.youtube.com/watch?v=PX_weThYIRg&feature=y...	Ammity	1	448	Jan 24, 2017 by TTRfan
	Rear discs (Preview) Due for a new rear disc, the shop lists 3 different ones. Apart from bling levels is there any difference in them?	devon_rich	9	829	Jan 13, 2017 by devon_rich
	Pocket Sized Tyre fitting Device Baja No Pinch Tube Tyre Fitting rim Lock (Preview) I just purchased one of these today, so should arrive a 2-3 weeks from the US I don't have enough strength in my wrists to fit a D606 rear tyre, I can do the front, but the back, just can't manage it. I can get them off OK, just not the reverse. After seeing this thing I was sold. [video=https://youtu.be/8WR...	BM Steve	10	1217	Jan 11, 2017 by petenz
	Need size of bearing 93317-32034 or 93315-32053 (Preview) Does anybody know what is the size of bearing 93317-32034 or 93315-32053? Seems like these two bearings are the samehttp://www.firstclassmotorcycles.com.au/partFinder/fiche/yamaha/1994/tt250r-ttr250/rear-arm	honda15i	1	582	Jan 2, 2017 by honda15i
	Electrical weirdness! (Preview) Here's an odd one to ponder: I have a Koso digital speedo on one of my ttrs. Battery memory/backup, but powered by the old ignition switched live feed that went to the original speedo (Open Enduro - digital) The way it works is when you turn on the ignition, it powers up the backlight and display. Also pow...	mossproof	6	678	Jan 2, 2017 by mossproof
	STARTER RELAY - aka solenoid (Preview) The TTR wouldn't start,a clicking sound was coming from the starter relay.I removed and cleaned the terminals but still the same,so off to dealer who wanted over £45 for genuine Yamaha part.So to the breakers i thought,while drooling over the new bikes in the showroom i told them about the relay,i so...	tracker	17	13811	Dec 30, 2016 by ttboof
	O'Rings for Carb (Preview) Hi all, I have pulled the carb out recently on a 2007 TTR250. I have seen a couple of pictures where people have said there is 2 O'Rings under the cover of where the diaphragm and needle are. Is this true for my model? As when I pulled it apart, none fell out. Perhaps they have perished completely? Tim	TimAus	1	528	Dec 29, 2016 by mossproof
	Plasti Dip to repair cracks in carb diaphragm (Preview) Does anyone know if applying plasti dip to a cracked carb diaphragm will work to seal pressure? I will eventually replace, but I just spent $75 on carb rebuild parts and don't want to spend another $35 just yet. I assume it would be best to apply to underside of diaphragm due to the suction. Does gas c...	JVOHV	2	951	Dec 28, 2016 by JVOHV
	Valve Stem Seals (Preview) Hi There, At the moment the TTR shops supply of valve stem seals are out of stock, does anyone have any other recommendations of where I can get some? - I'd like to rebuild the bike over Christmas break so need them as soon as possible. Thanks Dan	dlee22	3	597	Dec 23, 2016 by honda15i
	Rear wheel bearings part numbers (Preview) Hi all first question after my new purchase 1993 open endure I asked for a fresh MOT on the bike and got the report back that the rear swing arm and rear wheel bearings are shot I have had a look and can only get 2000 plus model rear wheel bearings on next day delivery from wemoto. Are the rear wheels the same o...	Hp	36	5197	Dec 22, 2016 by walkaboutboertjie
	Piston ring advice needed (Preview) Hi there, I've got a ttr thats burning oil and got the piston off and would like bit of confirmation of the size. I assume as there is no plus 1mm marker im safe to assume that its standard size. Any advice would be appreciated and if anyone could recommend parts that might be worth replacing whilst in the...	dlee22	10	728	Dec 20, 2016 by TTRfan
	What is this please (Preview) Please can anyone tell me what this is and where it goes on a TTR...I have no idea!	RodYorkttr	8	665	Dec 11, 2016 by TTRfan
	1995 OE fork gaiters (Preview) Hi guys, I am not very happy because I hardly can find anything on the internet for my 1995 Open Enduro. I hope I won't regret buying this old bike. There are parts for later models (1999 upwards) but nothing for old TTRs. My question is are the fork gaiters the same on '99-08 models as on my 1995's? Could I...	balin01	3	609	Dec 7, 2016 by RodYorkttr
	Please help me what to do with this SQUEAK !! (Preview) [video=http://youtu.be/iNECB6V4Pd8?list=UUR8ww-Yw96_sxAqhsAknSlg]	mypobox	14	1575	Dec 1, 2016 by TerryK
	Tyre size ? (Preview) http://www.oponeo.co.uk/moto-tyre-details/michelin-enduro-comp-iv-90-90-21-54-r-front-tt/?origin=prodlisting&gclid=CjwKEAiA74qkBRCdrM-6or7U73QSJABCDL9pY8kT1D4wa_4oUvwL-A7sf8JmPXRoSAnFGPbtpAq1JBoC9EHw_wcB	locky	6	2387	Nov 29, 2016 by TTRHead
	Oil pump cover (Preview) Every ad I see for a TTR oil pump includes a little semicircular tin guard. Every engine I have opened up has had no such guard fitted Is someone taking them off before I get in there or were they not always fitted? This is my experience on both pre and post Y2K engines. Not sure of the purpose exactly - can an...	mossproof	5	590	Nov 27, 2016 by sammyttr
	Fitting fuel injection - might be an interesiting project? (Preview) Hello everyone! I have had my TTR for a couple of months now, but haven't really got to ride her much. I seized the opportunity last weekend however to get a decent ride in for the first time. Despite enjoying the bike, it became clear that it is not carburating too brilliantly. It's ok to ride, don't get m...	Ray Luxury-Yacht	12	1525	Nov 27, 2016 by mossproof
	Grease nipple (Preview) I have had a few TTR's over the years but one I bought recently I noticed that its got a grease nipple on the rear shock linkage. I am trying to work out if someone has done this or its a lowering link. the bike sits lower I think than others I have had. But maybe its just me, because I have always adjusted the sp...	TTRHead	4	925	Nov 27, 2016 by sammyttr
	fully synthetic oil in the ttr? (Preview) My old man had a box of motul 7100 10w40 leak through his truck today and the company told him to throw it out but he decided to pass it on to me (thank's mate). There are 16 litres of this stuff and I was curious if it was fine to use in the ttr? It's coming into summer here in Australia and it can average around 3...	Ammity	6	924	Nov 27, 2016 by sammyttr
	Fuel on float bowl (Preview) I have noticed a few times when the fuel is left on over night on the bike I get a weep of fuel on the hole which is at the bottom of the float bowl where you would drain the fuel out once the drain screw was undone....I don't no why this would be surely there is nothing there to wear out?	TTRHead	4	638	Nov 22, 2016 by TTRfan
	Oil leak from external oil pipe - Dowty washers (Preview) I recently fitted a rebuilt 250 engine to my own TTR to give it a thorough test before offering it for sale. I was very pleased that it started and ran well but when I parked it up there was a bit of an oil drip under the engine The cam cover gasket and decompressor plug were both dry and closer inspection sho...	TTRfan	1	560	Nov 21, 2016 by TTRfan
	Mysterious oil leak at front of engine! (Preview) I refurbished a TTR for my brother-in-law Keith a few years ago. Great bike and he has been enjoying riding it, when he can't get out on his Duke that is! However, from early on there was an oil leak which we put down to one of the banjos on the external oil line. However, Keith replaced all the washers with...	TTRfan	6	1164	Nov 19, 2016 by ttr steve
	Fork oil change (Preview) Would I be ok using a 5w/30 fork oil? I am in the process of changing it. Following Brians excelllent stickie again on changing the fork oil. I noticed when compressing the forks you can hear a squeek, It sounds like the springs making the nosie inside to me. As you push down. But I am guessing it could sti...	TTRHead	16	843	Nov 17, 2016 by petenz
	Rich or lean symptoms? (Preview) Hey lads, me again (big surprise) symptoms; - My bike will drop revs at idle and even stalls when i pull the clutch in sometimes - It can die if i suddenly blip the throttle off idle - It starts really easily when cold but needs a bit of throttle when hot to start - The exhaust has a hell of a lot of black crap in t...	Ammity	0	461	Nov 16, 2016 by Ammity
	Plastic in fuel line?? (Preview) Wasn't getting any gas in my carb so I inspected the fuel line to find a piece of plastic in there Is there some plastic that's supposed to be in the fuel line to slow it's drip or is this just some random plastic that got pushed in there? Thanks	Dr_B	7	862	Nov 14, 2016 by Dr_B
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