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

Flying Dodo · Flying Dodo

My TTR isn't starting and low on compression - 50 to 60 psi so I took it all apart both cylinder head and barrel etc but without dismantelling the valves - wasn't brave enough and couldn't find a 'sticky' from Brian. Replaced the gaskets and re timed the lot and no improvement (I'm no mechanic) so either i...

ttrist · ttrist

Hi guys! Sorry for my english. It is not my native language, I learn it from the book =). Please help me with the crankshaft bearings of my Yamaha TTR. I had remove the cylinder head and cylinder. I found that the crankshaft has a backlash. I took the side of the engine cover to see the bearings. 1. Bearing...

jasparach · jasparach

Hi, Does anyone know where i can get replacement switch lettering for the handlebars, the lettering on mine is worn away. Small stick on lettering would do and lacquer over it.I think the originals are painted on but im not sure about that, i should check it. Maybe someone on here may have come across...

Trail hunter · Trail hunter

Does anyone know what type brake fluid to use on a 99 TTR 250

Paul C · Paul C

I replaced the fork seals a few months ago. Went for a few rides. No oil loss. Having not used the bike for a couple of weeks I gave it a quick check before going on holiday (on another bike) no issues. Returned from holiday to find about an egg cup full of oil had leaked from one leg? I gave it a clean. Went for a...

white power · white power

Sorry for the stupid question but i was wondering in which gear would be better push starting my ttr 250 01. I haven`t ridden it for a year, the battery is new , engine oil new and fresh gas . When i push the electric start it turns the engine over and almost starts but before give it gas it dies.

Keith89 · Keith89

So my bike was getting hard to start from cold checked compression it was done so new piston and rings have been fitted valves relapped new stem seals timing chasing and cam drive gears built up and runs great once warm so I stripped the carb cleaned everything and rebuilt still the same I have noticed th...

DC · DC

does anyone use a flush product when doing an oil change? I read in the manual it says not to use any additives as it could affect the clutch operattion and cause slippage. thoughts?

Markvan · Markvan

Went to go for a morning road ride and a flat rear tyre suddenly appeared out of nowhere. Looking at the TTR parked ready for me to take the bike cover off And it was flat as flat can be. Sunday morning here so no chance of a repair till tomorrow. Does this look like a classic tube pinch Or maybe a tyre lever pin...

Tommy the cat · Tommy the cat

What's this good folks? Tucked in by carb...

99ttr250 · 99ttr250

Guys, I acquired a 99 ttr 250 that needs a lot of attention. It appears the rod bearing burnt up and there is all kinds of metal shavings in the oil. I have been working on tearing down the engine. I was trying to take the rotor off without the sheath holder and the monkey wrench I was using dug into the met...

TonyB479 · TonyB479

This is my first tech question here as I just purchased my bike, the top end was disassembled when I purchased it and all of the parts were there with the exception of the tensioner. I purchased a manual one from ebay and it came with a generic instruction in the packet that says remove the chain guide bef...

Tommy the cat · Tommy the cat

Hey guys, I'm pretty new to working on bikes but im learning and NOT going to pay anyone to work on it unless I really have to..... but I've got a oil seep by the the exhaust manifold??, It's not alot but enough for me to want to fix it. I know it's vague but was wondering your thought on possible causes?? I've...

leigh · leigh

Hi Guys, Need new rear sprocket bolts. Bought a second set of rims and replaced the rear sprocket. The bolt heads and nuts were fairly stuffed but I got them off and back on again. Happy with how they did up and used locktite. However I am now thinking I probably should have used new ones and stop being so...

yamaha42 · yamaha42

Hi forum! I didn't want to threadjack the-dirty-commuter's thread so I shall start another topic. Same issue as him. I took my valve cover off, and checked the clearances. All were within spec. The chain worried me a little bit though...if i pushed on the chain in between the cams hard ( not exactly sur...

Tommy the cat · Tommy the cat

I'm guessing for a sat nav or charging or something? ? Ta

Tommy the cat · Tommy the cat

I'm guessing the previous owner wasn't quite as bothered about cleaning it as me???its getting there slowly and I'm really enjoying it!!My only concern now is the sprag clutch.... just hard to tell from the posted vids if it needs addressing? ??I guess I could have a look see??? If I posted pics of vari...

chris · chris

hi, what's the story with the white (and blue I think too) fork axle clamp? The Haynes manual section 5C-7 has an illustration 4.33 which has the clamp marked number 23 and unhelpfully doesn't even name number 23 in the key. My friend thinks you should tighten the top 2 nuts first about 5ft/lb torque the...

TTRfan · TTRfan

My heart sinks when removing engine side covers if the gasket needs replacing It happened tonight with a generator cover I was fitting. I use a Stanley knife blade to cut/scrape the old gasket off. If anyone has a better system please let me know! Gasket remover doesn't touch it. 40 minutes later As I...

admbnm · admbnm

hi,i bought an open enduro a week ago and it has lived in my van until yesterday when my insurace started, ,it started first press of the starter and i rode for about 7kms[lights on],after returning to the bike after an hour the battery was as dead as a dodo,i charged it up last night with a smart charger...

Tommy the cat · Tommy the cat

Noticed an intermittent fault on the front brake switch can you get the whole caboodle, ?? I'm sure having g some fun finding my way around the bike....

Archershome · Archershome

Hi all following on from last post here is a video of bike running with the funny rattle... Anyone name that tune? Or Rattle? Cheers Danny

DukeNinja · DukeNinja

Hi guys, I would be grateful for some assistance in troubleshooting some issues with my bike. I bought it a couple of weeks ago from a chap on here, and it started fine then. However, it now seems hard to get started. It also dies after a while with the fuel tap o. The "on" position, but seems to w...

poopoo_pa_choo · poopoo_pa_choo

New to this site and bikes in general so go easy :) I put my ttr250 on its side the other night to repair the clutch. Turned my fuel tap off before doing so. I expected a little bit of fuel to run from the overflow, however it didn't stop! I ended up having to clamp the hose to stop it! What do you think the issue...

ttr_paul · ttr_paul

Wondering if someone can advice me: Bike is hesitant on low partial throttle openings but fine when revved more pops and crackles when you let go off throttle requires a few goes to start with button stalls often when idling Also the clutch is not acting correctly, it is very snatchy like and on off swi...

ttboof · ttboof

My son borrowed the ttr jumped a log and the foot peg mount broke away from the frame . It looks like it's been cracked for quite a while a bit of a clean up a bit of a hammer and weld it should be ok

peteBLUEttr · peteBLUEttr

What are those spoke wrench sizes needed for the TTR wheels? The one in the TTr toolkit is not much cop(cheaply made and does not fit the front) so I would like to buy new one/ones.

Woodski · Woodski

Hi all - another question from me regarding my recently purchased TTR. There's more vibrations than I expected at higher revs. I've done basic checks for loose bolts/nuts etc. Is there anything else I should check ? What's the 'standard' for the bike in terms of smoothness across the revs ? It's felt t...

Sparky · Sparky

Hi all, new TTR owner, first question! I'm going trail riding in the Alps in 2 weeks time, I've been doing it for years, mainly BMW airheads, XT600's and Dominators.Some of the trails can get quite technical but there have always been many hands to help manhandle heavy bikes. Any road, this year I deci...

Woodski · Woodski

Hi all - I've recently bought a TTR. Went to change the oil and was unhappy to see the level was v low (prob about 500ml) and old and black. Nothing bad on the sump plug or in the filter (filter had some silver deposits - like you see on a bike's first service). Bike seems to run ok-ish but wondered if there's a...

Topic		Started By	Replies	Views	Last Post
	Piston rings, valves etc. (Preview) My TTR isn't starting and low on compression - 50 to 60 psi so I took it all apart both cylinder head and barrel etc but without dismantelling the valves - wasn't brave enough and couldn't find a 'sticky' from Brian. Replaced the gaskets and re timed the lot and no improvement (I'm no mechanic) so either i...	Flying Dodo	11	3949	Aug 28, 2015 by TTRfan
	Help in making a diagnosis (Preview) Hi guys! Sorry for my english. It is not my native language, I learn it from the book =). Please help me with the crankshaft bearings of my Yamaha TTR. I had remove the cylinder head and cylinder. I found that the crankshaft has a backlash. I took the side of the engine cover to see the bearings. 1. Bearing...	ttrist	10	1694	Aug 25, 2015 by TTRfan
	handlebar switch lettering (Preview) Hi, Does anyone know where i can get replacement switch lettering for the handlebars, the lettering on mine is worn away. Small stick on lettering would do and lacquer over it.I think the originals are painted on but im not sure about that, i should check it. Maybe someone on here may have come across...	jasparach	3	705	Aug 24, 2015 by hanzo
	Brake fluids (Preview) Does anyone know what type brake fluid to use on a 99 TTR 250	Trail hunter	11	1692	Aug 21, 2015 by peteBLUEttr
	Fork oil loss... (Preview) I replaced the fork seals a few months ago. Went for a few rides. No oil loss. Having not used the bike for a couple of weeks I gave it a quick check before going on holiday (on another bike) no issues. Returned from holiday to find about an egg cup full of oil had leaked from one leg? I gave it a clean. Went for a...	Paul C	4	766	Aug 21, 2015 by ttboof
	Bump Start (Preview) Sorry for the stupid question but i was wondering in which gear would be better push starting my ttr 250 01. I haven`t ridden it for a year, the battery is new , engine oil new and fresh gas . When i push the electric start it turns the engine over and almost starts but before give it gas it dies.	white power	4	1596	Aug 18, 2015 by TTRfan
	Will not start on cold with out bumping (Preview) So my bike was getting hard to start from cold checked compression it was done so new piston and rings have been fitted valves relapped new stem seals timing chasing and cam drive gears built up and runs great once warm so I stripped the carb cleaned everything and rebuilt still the same I have noticed th...	Keith89	10	759	Aug 10, 2015 by peteBLUEttr
	Engine flush on oil change? oil change flush engine additive (Preview) does anyone use a flush product when doing an oil change? I read in the manual it says not to use any additives as it could affect the clutch operattion and cause slippage. thoughts?	DC	7	918	Aug 10, 2015 by 66T
	Tube pinch? (Preview) Went to go for a morning road ride and a flat rear tyre suddenly appeared out of nowhere. Looking at the TTR parked ready for me to take the bike cover off And it was flat as flat can be. Sunday morning here so no chance of a repair till tomorrow. Does this look like a classic tube pinch Or maybe a tyre lever pin...	Markvan	4	784	Aug 9, 2015 by petenz
	electrickery (Preview) What's this good folks? Tucked in by carb...	Tommy the cat	2	461	Aug 6, 2015 by Tommy the cat
	Is this an issue? (Preview) Guys, I acquired a 99 ttr 250 that needs a lot of attention. It appears the rod bearing burnt up and there is all kinds of metal shavings in the oil. I have been working on tearing down the engine. I was trying to take the rotor off without the sheath holder and the monkey wrench I was using dug into the met...	99ttr250	0	471	Aug 3, 2015 by 99ttr250
	Installing a manual cam chain tensioner on a 2000 TTR 250 US model (Preview) This is my first tech question here as I just purchased my bike, the top end was disassembled when I purchased it and all of the parts were there with the exception of the tensioner. I purchased a manual one from ebay and it came with a generic instruction in the packet that says remove the chain guide bef...	TonyB479	14	3938	Jul 31, 2015 by 66T
	engine oil seep (Preview) Hey guys, I'm pretty new to working on bikes but im learning and NOT going to pay anyone to work on it unless I really have to..... but I've got a oil seep by the the exhaust manifold??, It's not alot but enough for me to want to fix it. I know it's vague but was wondering your thought on possible causes?? I've...	Tommy the cat	5	1316	Jul 30, 2015 by 66T
	New rear sprocket bolts (Preview) Hi Guys, Need new rear sprocket bolts. Bought a second set of rims and replaced the rear sprocket. The bolt heads and nuts were fairly stuffed but I got them off and back on again. Happy with how they did up and used locktite. However I am now thinking I probably should have used new ones and stop being so...	leigh	8	1084	Jul 26, 2015 by leigh
	Another cam chain noise (Preview) Hi forum! I didn't want to threadjack the-dirty-commuter's thread so I shall start another topic. Same issue as him. I took my valve cover off, and checked the clearances. All were within spec. The chain worried me a little bit though...if i pushed on the chain in between the cams hard ( not exactly sur...	yamaha42	5	982	Jul 24, 2015 by 66T
	What's this? (Preview) I'm guessing for a sat nav or charging or something? ? Ta	Tommy the cat	5	582	Jul 20, 2015 by Tommy the cat
	new bike clean and fettle... (Preview) I'm guessing the previous owner wasn't quite as bothered about cleaning it as me???its getting there slowly and I'm really enjoying it!!My only concern now is the sprag clutch.... just hard to tell from the posted vids if it needs addressing? ??I guess I could have a look see??? If I posted pics of vari...	Tommy the cat	9	884	Jul 19, 2015 by locky
	fork axle clamp (Preview) hi, what's the story with the white (and blue I think too) fork axle clamp? The Haynes manual section 5C-7 has an illustration 4.33 which has the clamp marked number 23 and unhelpfully doesn't even name number 23 in the key. My friend thinks you should tighten the top 2 nuts first about 5ft/lb torque the...	chris	1	574	Jul 18, 2015 by peteBLUEttr
	'Orrible jobs! Removing damaged gaskets. (Preview) My heart sinks when removing engine side covers if the gasket needs replacing It happened tonight with a generator cover I was fitting. I use a Stanley knife blade to cut/scrape the old gasket off. If anyone has a better system please let me know! Gasket remover doesn't touch it. 40 minutes later As I...	TTRfan	12	1998	Jul 16, 2015 by Clutha
	charging, (Preview) hi,i bought an open enduro a week ago and it has lived in my van until yesterday when my insurace started, ,it started first press of the starter and i rode for about 7kms[lights on],after returning to the bike after an hour the battery was as dead as a dodo,i charged it up last night with a smart charger...	admbnm	7	1405	Jul 15, 2015 by admbnm
	front brake light switch (Preview) Noticed an intermittent fault on the front brake switch can you get the whole caboodle, ?? I'm sure having g some fun finding my way around the bike....	Tommy the cat	4	704	Jul 13, 2015 by Tommy the cat
	Any one name that noise after the 263 Rebuild (Preview) Hi all following on from last post here is a video of bike running with the funny rattle... Anyone name that tune? Or Rattle? Cheers Danny	Archershome	2	525	Jul 9, 2015 by locky
	Petrol tap or fuelling? (Preview) Hi guys, I would be grateful for some assistance in troubleshooting some issues with my bike. I bought it a couple of weeks ago from a chap on here, and it started fine then. However, it now seems hard to get started. It also dies after a while with the fuel tap o. The "on" position, but seems to w...	DukeNinja	8	713	Jul 8, 2015 by Markvan
	fuel leak (Preview) New to this site and bikes in general so go easy :) I put my ttr250 on its side the other night to repair the clutch. Turned my fuel tap off before doing so. I expected a little bit of fuel to run from the overflow, however it didn't stop! I ended up having to clamp the hose to stop it! What do you think the issue...	poopoo_pa_choo	3	752	Jul 3, 2015 by hanzo
	Clutch and rough running issue - diagnosis needed! (Preview) Wondering if someone can advice me: Bike is hesitant on low partial throttle openings but fine when revved more pops and crackles when you let go off throttle requires a few goes to start with button stalls often when idling Also the clutch is not acting correctly, it is very snatchy like and on off swi...	ttr_paul	4	491	Jun 30, 2015 by peteBLUEttr
	left hand foot peg mount snapped (Preview) My son borrowed the ttr jumped a log and the foot peg mount broke away from the frame . It looks like it's been cracked for quite a while a bit of a clean up a bit of a hammer and weld it should be ok	ttboof	7	854	Jun 28, 2015 by TTRHead
	Spoke wrench (Preview) What are those spoke wrench sizes needed for the TTR wheels? The one in the TTr toolkit is not much cop(cheaply made and does not fit the front) so I would like to buy new one/ones.	peteBLUEttr	3	1020	Jun 28, 2015 by TTRfan
	Vibrations (Preview) Hi all - another question from me regarding my recently purchased TTR. There's more vibrations than I expected at higher revs. I've done basic checks for loose bolts/nuts etc. Is there anything else I should check ? What's the 'standard' for the bike in terms of smoothness across the revs ? It's felt t...	Woodski	8	1282	Jun 27, 2015 by peteBLUEttr
	Michelin Enduro Comp4 (Preview) Hi all, new TTR owner, first question! I'm going trail riding in the Alps in 2 weeks time, I've been doing it for years, mainly BMW airheads, XT600's and Dominators.Some of the trails can get quite technical but there have always been many hands to help manhandle heavy bikes. Any road, this year I deci...	Sparky	10	851	Jun 25, 2015 by Sparky
	Low Oil (Preview) Hi all - I've recently bought a TTR. Went to change the oil and was unhappy to see the level was v low (prob about 500ml) and old and black. Nothing bad on the sump plug or in the filter (filter had some silver deposits - like you see on a bike's first service). Bike seems to run ok-ish but wondered if there's a...	Woodski	6	785	Jun 24, 2015 by locky
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