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

TTRfan · TTRfan

OK - I am getting to the end of updating the FAQ and have come across this entry: When it all goes wrong! If anyone knows of a repair shop that has particular expertise with TTR engines please e-mail me with details. In the UK, the Yamaha Technical Hotline number is 01932 358 065 - very helpful apparent...

Nomada_Firefox · Nomada_Firefox

A simple question. If I open the engine, what more pieces should I change? Including all the gaskets. If somebody can make me a list and where I can find them, it would be good. I have forgotten for many time this problem in my TTR and probably I should not forget it forever.

TTRfan · TTRfan

I have been contacted this morning by an owner who lives in Vietnam. See his message below:"Do you have any idea what might be wrong with my bike. When I START the bike, it occasionally makes a very loud clunk or even double-clunk noise the second it actually starts running. The noise seems to come...

mpok3 · mpok3

http://www.mandp.co.uk/index.php/default/maxxis-c858-2341.html

Gus The Snail · Gus The Snail

Are the winder nut thingies a 2 piece or one? Tried turning it with screwdriver and hammer but didnt budge.. Bike is a little high for female riders , so need to lower it a little.

Wynand · Wynand

Hi everyone So its been an interesting month. Managed to drown a land rover and crashed the ttr twice on trails. With yesterdays mishap I managed to hit the front fork at a respectable 20km/h and now its leaking oil from the hex nut. Tried to look at some diagrams to see how it seals but did not quite get th...

Coast rider · Coast rider

Hi All can someone help me understand the wiring diagram my high beam isn't working. my bike is a 2004 uk model so the lights are wired permanently on (no on off switch) the diagram shows a switch with a single wire to a single double filament bulb my bike has a small side light bulb and a double filament (h...

TTRfan · TTRfan

We had a customer who asked if I had any ideas of what can be causing pulsing at the brake lever on braking. He had tried a couple of used discs thinking one might be warped and also changed pads but the symptoms remained. I had come across this once before and, after a lot of head scratching, managed to...

Michael · Michael

Hey, I have a Raid from about '99 and want t o add an on/off switch. Can someone tell me which colour wire to cut and pass through the switch? Thanks

Jimbo125 · Jimbo125

I have a 96 ttr and it blows alot of white smoke. Im pretty sure it needs new piston rings but i would like to make sure first. Also I think there is a problem with my clutch because when I go into third gear or above while wrapping on the throttle the engine starts reving but I dont build up any speed till it st...

TTRfan · TTRfan

Knocked up out of a spare IKEA flatpack hex key by ttrsteve - kindly donated to me after we had finished using it on his engine What is nice about it is that it sticks in the slot leaving two hands free. Brian

Sprok · Sprok

Any ideas how to get the chain puller off? It's the only good part left on this axle and for some reason costs twice as much as the nearly identical puller on the other side (WTF?!). A previous knucklehead ruined the threads then ground off the end of the axle to get the nut back on (but still cross-threade...

TTRfan · TTRfan

We have had quite a few new owners joining us recently and it may be worth pointing out that there should be a spare 15 amp fuse in the RH side of the battery box as shown in the photo below. It is the only fuse on the TTR and the one in use sits in a holder that clips into the top of the battery box as can be seen in...

petenz · petenz

What do you Australian fella's think of your Penrite oil ??? Got 3 bikes that need a oil change thats like $200 for Motul 5100 oil I have been useing... Spoted this Penrite MC 4ST 20/50 semi synthetic motor cycle oil while I was getting some new head light bulbs for the tin top... Like half the prise of Motu...

AndrewM · AndrewM

Got any idea what this rattle is? (see youtube link below). Its only there when the engine has warmed up. I have just fitted a new timing chain and it the same. It has also had a rebore and new piston. I have check the valve clearance and they seem ok. https://youtu.be/P4QQPBIFY24 -- Edited by AndrewM o...

texasT · texasT

I bought this filter/basket combo some time back so I could swap out in a few minutes and clean my OE filter at a later date and have as a back-up. When I made the swap, I noticed that the UNI basket has a piece on it that was just a bit too tall to make the clamp snap shut [URL=http://s1156.photobucket.com/u...

commanderjjones · commanderjjones

Hey guys. I just picked up an '05 TTR 250 this past Wednesday (so I haven't had a chance to get a manual yet) and have a few questions. I was hoping to ride it tomorrow, but ran across a couple of issues when I started servicing it last night. When I started to clean the air filter, I noticed a couple of hoses a...

TTRfan · TTRfan

Anyone had this? When a mate's TTR gets hot (about 15 miles into a ride) a very loud screech starts in the clutch/gearbox area. The pitch changes as the gears are changed and it happens with the clutch fully engaged. I haven't heard it myself and was unable to replicate the noise when I took the TTR for a ru...

TTRfan · TTRfan

This photo has been added to my Black Museum folder! The current owner popped around tonight to pick up a new 50 pilot jet to replace this one. You just wonder how the previous owner had managed to do this damage Interestingly the TTR started and ran well at lower revs suggesting that the pilot jet con...

Wynand · Wynand

Hi everyone So I recently bought a ttr and the previous owner had the suspension to a very soft setting. This resulted in the rubber at the bottom of the rear shock that prevents the bike from bottoming out (dont know if im explaining it wrong im a newbie) getting quite worn. Yamaha wants to sell me a total...

sena · sena

Hello everyone. my bike restoration project seems becoming a "Winter project in a Tropical country" After cleaning and gently grinding in the valves, I found that exhaust ones are out of specification. I will need to order a new set and cut the valve seats to fit the specs. Then it will b...

peteBLUEttr · peteBLUEttr

Some of the best maintenance guide videos I have come across. Think they may well be handy for some people. May add more to these and perhaps you have suggestions too. [video=http...

TTRfan · TTRfan

See here Very good points! Brian

Serial · Serial

Plz anyone got any idea where fuel mixture srcew is on the carb? When i open full throttle i m facing some engine jumble... i have aftermarket exhaust...and never befrore tried to adjust the carb...i think thats the problem...the fuel mixture is very rich-poor or something similar... ps:i already...

Zach · Zach

Hi can anyone confirm the size of tyres for my TTR250. I want to fit MT43s for the LE trial. Thanks Zach

MikeBarnacle · MikeBarnacle

this is probably a subject others have covered I could do with a bit of help. just picked up a ttr but she won't start, starter motor turns. But the engine doesn't crank. The last owner said that the guy he got it off had had the bike in bits but didnt say to what extent. Fuel flows fine when in reserve but no...

Moo · Moo

I recently installed some of the venhill long throttle cables, and my throttle now sticks and won't snap back. The issue lies somewhere with the hand control, as when I pull the cables on their own, it all snaps back fine. If I install just the pull cable, all is fine... If I install just the push cable.....

Coast rider · Coast rider

OK a quick question what inner tube repair patches \ kits do people carry when green laning in UK I'll carry a spare front tube but 2 punctures isn't out of he bounsd of possibility I won't be fitting mouse's and can't afford TuBliss yet brand names would be useful cheers N

JOHNYBOY · JOHNYBOY

has anyone tried these small cylinders to blow up tyres how do they fit on the valve & wheres the best & cheapest place to buy them ive seen some & the thread is on the outside so how does this fit on valve

basher · basher

i was changing the oil and found the bike had a washable metal mesh oil filter, i had the wrong filter sent so cleaned it and stuck it back in, are these any good? I can see the benefits for touring where you only need to find oil but i would thinkna standard filter would catch smaller particles

Topic		Started By	Replies	Views	Last Post
	Recommended bike shops that know their way around a TTR250! (Preview) OK - I am getting to the end of updating the FAQ and have come across this entry: When it all goes wrong! If anyone knows of a repair shop that has particular expertise with TTR engines please e-mail me with details. In the UK, the Yamaha Technical Hotline number is 01932 358 065 - very helpful apparent...	TTRfan	2	624	Feb 25, 2016 by pug
	What more should I change if I replace the Valve Stem Oil Seals? (Preview) A simple question. If I open the engine, what more pieces should I change? Including all the gaskets. If somebody can make me a list and where I can find them, it would be good. I have forgotten for many time this problem in my TTR and probably I should not forget it forever.	Nomada_Firefox	9	1055	Feb 25, 2016 by Nomada_Firefox
	Clunk diagnosis needed! (Preview) I have been contacted this morning by an owner who lives in Vietnam. See his message below:"Do you have any idea what might be wrong with my bike. When I START the bike, it occasionally makes a very loud clunk or even double-clunk noise the second it actually starts running. The noise seems to come...	TTRfan	9	1055	Feb 24, 2016 by mossproof
	Cheng Shin C858 tyres (Preview) http://www.mandp.co.uk/index.php/default/maxxis-c858-2341.html	mpok3	2	783	Feb 23, 2016 by petenz
	winding rear shock down to lower seat height (Preview) Are the winder nut thingies a 2 piece or one? Tried turning it with screwdriver and hammer but didnt budge.. Bike is a little high for female riders , so need to lower it a little.	Gus The Snail	3	624	Feb 22, 2016 by TTRfan
	Front fork leaking (Preview) Hi everyone So its been an interesting month. Managed to drown a land rover and crashed the ttr twice on trails. With yesterdays mishap I managed to hit the front fork at a respectable 20km/h and now its leaking oil from the hex nut. Tried to look at some diagrams to see how it seals but did not quite get th...	Wynand	4	1175	Feb 22, 2016 by Wynand
	confused by wiring diagram (Preview) Hi All can someone help me understand the wiring diagram my high beam isn't working. my bike is a 2004 uk model so the lights are wired permanently on (no on off switch) the diagram shows a switch with a single wire to a single double filament bulb my bike has a small side light bulb and a double filament (h...	Coast rider	7	1888	Feb 18, 2016 by Coast rider
	Pulsing at the brake lever on braking (Preview) We had a customer who asked if I had any ideas of what can be causing pulsing at the brake lever on braking. He had tried a couple of used discs thinking one might be warped and also changed pads but the symptoms remained. I had come across this once before and, after a lot of head scratching, managed to...	TTRfan	4	931	Feb 18, 2016 by pricey
	Raid aftermarket headlight switch wire to cut? (Preview) Hey, I have a Raid from about '99 and want t o add an on/off switch. Can someone tell me which colour wire to cut and pass through the switch? Thanks	Michael	11	5044	Feb 18, 2016 by petenz
	New piston rings and clutch pads (Preview) I have a 96 ttr and it blows alot of white smoke. Im pretty sure it needs new piston rings but i would like to make sure first. Also I think there is a problem with my clutch because when I go into third gear or above while wrapping on the throttle the engine starts reving but I dont build up any speed till it st...	Jimbo125	6	816	Feb 15, 2016 by Jimbo125
	Cheap and effective tensioner tool! (Preview) Knocked up out of a spare IKEA flatpack hex key by ttrsteve - kindly donated to me after we had finished using it on his engine What is nice about it is that it sticks in the slot leaving two hands free. Brian	TTRfan	5	976	Feb 15, 2016 by locky
	Getting the left side chain puller off a rusted axle (Preview) Any ideas how to get the chain puller off? It's the only good part left on this axle and for some reason costs twice as much as the nearly identical puller on the other side (WTF?!). A previous knucklehead ruined the threads then ground off the end of the axle to get the nut back on (but still cross-threade...	Sprok	3	802	Feb 10, 2016 by Sprok
	Did you know about the spare fuse in the battery box (Preview) We have had quite a few new owners joining us recently and it may be worth pointing out that there should be a spare 15 amp fuse in the RH side of the battery box as shown in the photo below. It is the only fuse on the TTR and the one in use sits in a holder that clips into the top of the battery box as can be seen in...	TTRfan	0	2071	Feb 10, 2016 by TTRfan
	Penrite Oil.... (Preview) What do you Australian fella's think of your Penrite oil ??? Got 3 bikes that need a oil change thats like $200 for Motul 5100 oil I have been useing... Spoted this Penrite MC 4ST 20/50 semi synthetic motor cycle oil while I was getting some new head light bulbs for the tin top... Like half the prise of Motu...	petenz	5	793	Feb 3, 2016 by petenz
	Engine Rattle (Preview) Got any idea what this rattle is? (see youtube link below). Its only there when the engine has warmed up. I have just fitted a new timing chain and it the same. It has also had a rebore and new piston. I have check the valve clearance and they seem ok. https://youtu.be/P4QQPBIFY24 -- Edited by AndrewM o...	AndrewM	6	1541	Feb 1, 2016 by AndrewM
	UNI Air Filter NU-3238ST vs. OE Yamaha filter Review (Preview) I bought this filter/basket combo some time back so I could swap out in a few minutes and clean my OE filter at a later date and have as a back-up. When I made the swap, I noticed that the UNI basket has a piece on it that was just a bit too tall to make the clamp snap shut [URL=http://s1156.photobucket.com/u...	texasT	0	646	Feb 1, 2016 by texasT
	intake questions (Preview) Hey guys. I just picked up an '05 TTR 250 this past Wednesday (so I haven't had a chance to get a manual yet) and have a few questions. I was hoping to ride it tomorrow, but ran across a couple of issues when I started servicing it last night. When I started to clean the air filter, I noticed a couple of hoses a...	commanderjjones	10	2174	Jan 29, 2016 by commanderjjones
	Screeching noise from gearbox or clutch area? ( 1 2 3 ) (Preview) Anyone had this? When a mate's TTR gets hot (about 15 miles into a ride) a very loud screech starts in the clutch/gearbox area. The pitch changes as the gears are changed and it happens with the clutch fully engaged. I haven't heard it myself and was unable to replicate the noise when I took the TTR for a ru...	TTRfan	102	6989	Jan 28, 2016 by Keith89
	Damaged pilot jet photo (Preview) This photo has been added to my Black Museum folder! The current owner popped around tonight to pick up a new 50 pilot jet to replace this one. You just wonder how the previous owner had managed to do this damage Interestingly the TTR started and ran well at lower revs suggesting that the pilot jet con...	TTRfan	3	529	Jan 28, 2016 by peteBLUEttr
	Rear shock rubber (Preview) Hi everyone So I recently bought a ttr and the previous owner had the suspension to a very soft setting. This resulted in the rubber at the bottom of the rear shock that prevents the bike from bottoming out (dont know if im explaining it wrong im a newbie) getting quite worn. Yamaha wants to sell me a total...	Wynand	4	778	Jan 27, 2016 by Wynand
	Valve seat cutter choice and/or replacement of seats? (Preview) Hello everyone. my bike restoration project seems becoming a "Winter project in a Tropical country" After cleaning and gently grinding in the valves, I found that exhaust ones are out of specification. I will need to order a new set and cut the valve seats to fit the specs. Then it will b...	sena	3	3341	Jan 25, 2016 by TTRfan
	Guide vids. (Preview) Some of the best maintenance guide videos I have come across. Think they may well be handy for some people. May add more to these and perhaps you have suggestions too. [video=http...	peteBLUEttr	0	552	Jan 20, 2016 by peteBLUEttr
	THE TOP 6 CHARACTERISTICS YOU NEED TO HAVE TO REBUILD A MOTORCYCLE ENGINE (Preview) See here Very good points! Brian	TTRfan	1	565	Jan 20, 2016 by peteBLUEttr
	Trying to adjust my Carburator (Preview) Plz anyone got any idea where fuel mixture srcew is on the carb? When i open full throttle i m facing some engine jumble... i have aftermarket exhaust...and never befrore tried to adjust the carb...i think thats the problem...the fuel mixture is very rich-poor or something similar... ps:i already...	Serial	3	2075	Jan 18, 2016 by TTRfan
	Tyres for LE trial (Preview) Hi can anyone confirm the size of tyres for my TTR250. I want to fit MT43s for the LE trial. Thanks Zach	Zach	6	604	Jan 14, 2016 by Zach
	Starting issue. With you tube video to help ( 1 2 ) (Preview) this is probably a subject others have covered I could do with a bit of help. just picked up a ttr but she won't start, starter motor turns. But the engine doesn't crank. The last owner said that the guy he got it off had had the bike in bits but didnt say to what extent. Fuel flows fine when in reserve but no...	MikeBarnacle	70	3499	Jan 13, 2016 by peteBLUEttr
	Throttle Snap Back Issue (Preview) I recently installed some of the venhill long throttle cables, and my throttle now sticks and won't snap back. The issue lies somewhere with the hand control, as when I pull the cables on their own, it all snaps back fine. If I install just the pull cable, all is fine... If I install just the push cable.....	Moo	2	755	Jan 12, 2016 by Moo
	Tube\Tyre repair kits? (Preview) OK a quick question what inner tube repair patches \ kits do people carry when green laning in UK I'll carry a spare front tube but 2 punctures isn't out of he bounsd of possibility I won't be fitting mouse's and can't afford TuBliss yet brand names would be useful cheers N	Coast rider	13	1013	Jan 12, 2016 by TTRfan
	punctures (Preview) has anyone tried these small cylinders to blow up tyres how do they fit on the valve & wheres the best & cheapest place to buy them ive seen some & the thread is on the outside so how does this fit on valve	JOHNYBOY	3	840	Jan 10, 2016 by pug
	Mesh oil filters (Preview) i was changing the oil and found the bike had a washable metal mesh oil filter, i had the wrong filter sent so cleaned it and stuck it back in, are these any good? I can see the benefits for touring where you only need to find oil but i would thinkna standard filter would catch smaller particles	basher	4	897	Jan 3, 2016 by petenz
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