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

dern · dern

Can anyone help me with my thought process please... I've taken the head/barrel off and refitted to cure an oil leak from the bottom of the barrel at the front. Now it's all back together it runs as rough under load as you like. Idle is fine, steady throttle is ok but not brilliant but acceleration is jerk...

kgoose89 · kgoose89

Ordered a new idle set screw from Yamaha. Lo and Behold, it is on national backorder, mine broke as I was attempting to adjust as this bike has sat in the elements to my suspicion, for quite some time. I'm going to pull the carb and drill out the original. Does anyone happen to know what pitch and thread si...

kgoose89 · kgoose89

Ok, so I finally got my bike running. Upon the throttle sticking after running it a few times I decided to inspect it further. I pulled the carburetor and noticed a super sticky brown gunk on the slide and outlet portion of the carb. I cleaned the emulsifier and the carb, it seems like it is beginning to st...

hanzo · hanzo

yesterday my neutral light went out thinking it was the bulb i proceeded to change it.Unfortunately the bulb holder disintigrated , leaving the wires bare with the copper fittings attached .there is power to the brown wire. The bike will now not start on the starter unless the clutch is pulled in and t...

TDVT · TDVT

Even though we have a bit of nice weather ahead, I am thinking about winter maintenance for the TTR which may include the top-end. The bike is now 10 years old, runs OK but I really don't know much about it's maintenance prior to my getting it 3 years ago. Seems like a valve job, timing chain, etc. certainl...

matador · matador

Years ago I before 0-ring chains I used to remove the chain wash it in paraffin and cook it up in 'linklife', hang up the warm chain over the tin as most used to run back, worked well. For the last few years I've used Chainsaw oil before each trip of say 100miles, often over oiling to let the surplus +dirt ru...

hertsrider · hertsrider

Hi all, returned from holiday and the bike wont start, battery has power as everything works on it but the thing wont even turn. so, bikes in neutral, press the button and nothing happens....just the neutral light dims And brightens again when I leave the start button. must be an electrical fault some...

nwrider · nwrider

Went riding saturday bike ran great as always. Get up the next day, its 40 f outside, tried to start, only the starter turned . choked it and the same. So now i am late for work. Drive car. Get home pull the spark plug and no spark. Checked starter switch, took apart and cleaned. Unpluged most connection...

zoid · zoid

Took her apart tonight and found my problem some how rocks ended up inside of it...? That mark on the sleeve is pretty deep.. What should I do?

Matt G · Matt G

Hi, If your like me and riding the bike in the high rev range you might be looking for a tacho. This is the tiny tach and I have found it very good. It is American made and is also an hour meter. Regards, Matt

kgoose89 · kgoose89

Is there any way around paying then dollars a piece for the specialized fasteners totalling 30 dollars to mount the air cleaner cover?

Markvan · Markvan

Picked up a front and rear wheel to keep knobbys and a 50 tooth sprocket on them for bush rides. They are the purple rims and they will be going on a blue model. The front spindle has this bolt coming out of its center. I havnt seen any photos of this bolt. Im going to use my blue model spindles On the purple whe...

ttboof · ttboof

Just pulled my ign switch apart . Cleaned up the contacts .turned the center bridge 180degrees put all back together and all good . All done in about 20 mins

zoid · zoid

So a few days after if filled by bike with water (got it out now running) she started ticking. The cam chain doesnt have much play and is tight. and it starts right up so I dont think its the valves. But what do I know.. Just so many problems after she took in water

TTRfan · TTRfan

I just happen to have a new Hel hose in my pile of stuff "to do something with" so thought it might be interesting to compare it with the Vehill front hose. The next pic compares the fittings at the reservoir end: The Venhill hose has a plastic sleeve over the hose which adds stiffness where t...

zoid · zoid

hey! I have a 2001 ttr250. bought it from a guy for 450 bucks with the title! bad thing was it smoked and he said it would stop once it wormed up never stopped... So i replaced the valve seal along with rings and honed the cylinder. Ran great after that no smoking at all. Then i went to a atv part and layed it ove...

matador · matador

Since I bought my TTR a couple of years ago it's been a bit spluttery cold and less pickup against my son's TTR, I have done the normal stuff x3 times or more. Then looking through the parts list Brian mentioned about pilot jets being difficult to clean, so I ordered up a couple of replacement jets a bit lar...

Fladdem · Fladdem

Hi everyone, another problem again. After my spirited riding at the MX track last month, the bike doesn't feel the same. At about half throttle, she develops a splutter which leads me to think about fuelling issues again.

But I also noticed that the compression seems quite low, I can near e...

pug · pug

Metal Spinning this very tired rear hub has had wheel bearing failure on the two bearing side and was a right nob to get running true in the lathe had to true the disk side before we could even cut the sprocket side. bad metal taken out new steal ring fitted an locked in to carry the two wheel bearings....

TTRfan · TTRfan

I had a query from a customer this morning who had bought a rear caliper slide pin and rubber repair kit - all genuine Yamaha parts. The new pin (part # 3SP-25926-51) has an extra shoulder - see pic below: We have sold quite a few of these kits (see here) and not had a query before. I have also fitted a few and...

TTRfan · TTRfan

kgoose89 wrote: Ok I'm new here sorry if I'm not in the correct area. First off, I purchased a 2000 model ttr250 for 300 dollars. Cleaned the valves, tore everything down. Everything looks fine. I put everything back together, set timing etc. I went to start it yesterday, I've got spark but not sure if t...

MarcusAurelius · MarcusAurelius

Going off the previous guys post about the oil leak seen here. I have ordered the replacement cap but the retaining bolt ive got it also leaking, I think its stripped. It wont tighten down at all. Does anyone know what part number or what kind of screw this is? Mine looks slightly different then the one pi...

TTRfan · TTRfan

I was cleaning some axles and snail cams this morning and came across two snail cams different to all the others. These have raised corners as shown in the pic above. All my others are dead flat. It may be a coincidence but I have just one Raid axle (shorter than the OE ones) so am guessing they go together...

tom438596 · tom438596

Hey guys. I recently had my bike in at the shop and they told me my starter clutch is wearing that's why I have a clunk when starting. I asked for a quote on the parts new and there so expensive considering what they are. Has anyone got any wrecks/parts in Australia on here that can help me out???

scottydog · scottydog

Hi,my brake light was staying on all the time so i checked the foot brake switch and all was well.However i removed the front brake switch and when i push the little pin it goes out.I dont see any way of adjusting this, is it just worn and needs replacing? Thanks in advance Lindsay

leigh · leigh

Well gotta thank this awesome forum again, had a leaking rear shock so pulled it out and sent it off and rebuilt the carby while I was at it. What a difference that has made as well. Moved the clip a notch, new seals and diaphragm. So easy doing all the above once I read all the stuff on here. Just great. ...

ripper · ripper

Well it would seem that there aren't any frames going in the UK and given that I have a cosmetically challenged (f%%**d) frame does anyone know if a ttr 225 frame will except a 250 engine or do I have to start cutting and doctoring the original ? REGARDS RIPPER

sena · sena

Hi all, The front brake lever of my old TTR is broken, allowing to be actioned only by 2 fingers. Adding to that, it seized the fluid return 2-3 times. Is the full mechanism easy to find ? not very expensive ? (shipped worldwide, or at least to France), or should I still try to replace master cylinder with a...

grandad · grandad

I've developed a grinding rattling metallic noise fromm around the engine sprocket - gearbox aria when riding,could it be gearbox bearingss, if so does this mean a complete engine strip, rest of engine runs as sweet as a nut,HELP

Padowan · Padowan

Trying to get at the starter gears and motor and have found 2 out of the three cover bolts sized. Have cut slots to try remove with no luck and am running out of options before I have no choice but to drill them out. At least the holes are through drilled so I should be able to clean them out. Anyway, Rant o...

Topic		Started By	Replies	Views	Last Post
	Rough running after rebuild (Preview) Can anyone help me with my thought process please... I've taken the head/barrel off and refitted to cure an oil leak from the bottom of the barrel at the front. Now it's all back together it runs as rough under load as you like. Idle is fine, steady throttle is ok but not brilliant but acceleration is jerk...	dern	9	1019	Oct 3, 2014 by dern
	Tekei Y30p Issue....Jarrah please chime in. Also, exhaust studs broken and frozen in the head... (Preview) Ordered a new idle set screw from Yamaha. Lo and Behold, it is on national backorder, mine broke as I was attempting to adjust as this bike has sat in the elements to my suspicion, for quite some time. I'm going to pull the carb and drill out the original. Does anyone happen to know what pitch and thread si...	kgoose89	3	632	Sep 29, 2014 by kgoose89
	Oil in the carb, oil collecting upon air fins on the cylinder casing (Preview) Ok, so I finally got my bike running. Upon the throttle sticking after running it a few times I decided to inspect it further. I pulled the carburetor and noticed a super sticky brown gunk on the slide and outlet portion of the carb. I cleaned the emulsifier and the carb, it seems like it is beginning to st...	kgoose89	3	753	Sep 29, 2014 by kgoose89
	neutral switch advice (Preview) yesterday my neutral light went out thinking it was the bulb i proceeded to change it.Unfortunately the bulb holder disintigrated , leaving the wires bare with the copper fittings attached .there is power to the brown wire. The bike will now not start on the starter unless the clutch is pulled in and t...	hanzo	3	726	Sep 28, 2014 by hanzo
	Top-end work (Preview) Even though we have a bit of nice weather ahead, I am thinking about winter maintenance for the TTR which may include the top-end. The bike is now 10 years old, runs OK but I really don't know much about it's maintenance prior to my getting it 3 years ago. Seems like a valve job, timing chain, etc. certainl...	TDVT	2	430	Sep 28, 2014 by TTRfan
	chain lub - what's best for dirt bikes. (Preview) Years ago I before 0-ring chains I used to remove the chain wash it in paraffin and cook it up in 'linklife', hang up the warm chain over the tin as most used to run back, worked well. For the last few years I've used Chainsaw oil before each trip of say 100miles, often over oiling to let the surplus +dirt ru...	matador	5	635	Sep 26, 2014 by Pendo
	Starting/electric issues (Preview) Hi all, returned from holiday and the bike wont start, battery has power as everything works on it but the thing wont even turn. so, bikes in neutral, press the button and nothing happens....just the neutral light dims And brightens again when I leave the start button. must be an electrical fault some...	hertsrider	11	1327	Sep 26, 2014 by hertsrider
	New problem (Preview) Went riding saturday bike ran great as always. Get up the next day, its 40 f outside, tried to start, only the starter turned . choked it and the same. So now i am late for work. Drive car. Get home pull the spark plug and no spark. Checked starter switch, took apart and cleaned. Unpluged most connection...	nwrider	6	612	Sep 25, 2014 by nwrider
	Aftermath of water/rocks (Preview) Took her apart tonight and found my problem some how rocks ended up inside of it...? That mark on the sleeve is pretty deep.. What should I do?	zoid	3	433	Sep 25, 2014 by TTRfan
	Tiny Tach (Preview) Hi, If your like me and riding the bike in the high rev range you might be looking for a tacho. This is the tiny tach and I have found it very good. It is American made and is also an hour meter. Regards, Matt	Matt G	9	4613	Sep 24, 2014 by TTRfan
	Dsus Fasteners (Preview) Is there any way around paying then dollars a piece for the specialized fasteners totalling 30 dollars to mount the air cleaner cover?	kgoose89	7	672	Sep 24, 2014 by TTRfan
	Front spindle (Preview) Picked up a front and rear wheel to keep knobbys and a 50 tooth sprocket on them for bush rides. They are the purple rims and they will be going on a blue model. The front spindle has this bolt coming out of its center. I havnt seen any photos of this bolt. Im going to use my blue model spindles On the purple whe...	Markvan	2	374	Sep 23, 2014 by Markvan
	ign switch repair (Preview) Just pulled my ign switch apart . Cleaned up the contacts .turned the center bridge 180degrees put all back together and all good . All done in about 20 mins	ttboof	2	400	Sep 21, 2014 by ttboof
	ttr ticking! (Preview) So a few days after if filled by bike with water (got it out now running) she started ticking. The cam chain doesnt have much play and is tight. and it starts right up so I dont think its the valves. But what do I know.. Just so many problems after she took in water	zoid	1	386	Sep 21, 2014 by TTRfan
	Comparison of Hel and Venhill after-market front brake hoses (Preview) I just happen to have a new Hel hose in my pile of stuff "to do something with" so thought it might be interesting to compare it with the Vehill front hose. The next pic compares the fittings at the reservoir end: The Venhill hose has a plastic sleeve over the hose which adds stiffness where t...	TTRfan	1	964	Sep 21, 2014 by WillsTTR
	Need help with the ttr! (Preview) hey! I have a 2001 ttr250. bought it from a guy for 450 bucks with the title! bad thing was it smoked and he said it would stop once it wormed up never stopped... So i replaced the valve seal along with rings and honed the cylinder. Ran great after that no smoking at all. Then i went to a atv part and layed it ove...	zoid	12	783	Sep 21, 2014 by zoid
	Jet age - carb sorted at last (Preview) Since I bought my TTR a couple of years ago it's been a bit spluttery cold and less pickup against my son's TTR, I have done the normal stuff x3 times or more. Then looking through the parts list Brian mentioned about pilot jets being difficult to clean, so I ordered up a couple of replacement jets a bit lar...	matador	1	383	Sep 20, 2014 by TTRfan
	Lost Power (Preview) Hi everyone, another problem again. After my spirited riding at the MX track last month, the bike doesn't feel the same. At about half throttle, she develops a splutter which leads me to think about fuelling issues again. But I also noticed that the compression seems quite low, I can near e...	Fladdem	11	1275	Sep 20, 2014 by TTRfan
	Metal Spinning (Preview) Metal Spinning this very tired rear hub has had wheel bearing failure on the two bearing side and was a right nob to get running true in the lathe had to true the disk side before we could even cut the sprocket side. bad metal taken out new steal ring fitted an locked in to carry the two wheel bearings....	pug	4	563	Sep 17, 2014 by WheelMan
	Rear caliper pins - more than one part? (Preview) I had a query from a customer this morning who had bought a rear caliper slide pin and rubber repair kit - all genuine Yamaha parts. The new pin (part # 3SP-25926-51) has an extra shoulder - see pic below: We have sold quite a few of these kits (see here) and not had a query before. I have also fitted a few and...	TTRfan	2	327	Sep 15, 2014 by Chimpy
	Starting problems - kgoose89 (Preview) kgoose89 wrote: Ok I'm new here sorry if I'm not in the correct area. First off, I purchased a 2000 model ttr250 for 300 dollars. Cleaned the valves, tore everything down. Everything looks fine. I put everything back together, set timing etc. I went to start it yesterday, I've got spark but not sure if t...	TTRfan	11	827	Sep 11, 2014 by kgoose89
	Oil leak, Quick question (Preview) Going off the previous guys post about the oil leak seen here. I have ordered the replacement cap but the retaining bolt ive got it also leaking, I think its stripped. It wont tighten down at all. Does anyone know what part number or what kind of screw this is? Mine looks slightly different then the one pi...	MarcusAurelius	3	513	Sep 10, 2014 by MarcusAurelius
	Is this a snail cam from a Raid? (Preview) I was cleaning some axles and snail cams this morning and came across two snail cams different to all the others. These have raised corners as shown in the pic above. All my others are dead flat. It may be a coincidence but I have just one Raid axle (shorter than the OE ones) so am guessing they go together...	TTRfan	1	366	Sep 10, 2014 by WillsTTR
	looking for parts!!! starter clutch (Preview) Hey guys. I recently had my bike in at the shop and they told me my starter clutch is wearing that's why I have a clunk when starting. I asked for a quote on the parts new and there so expensive considering what they are. Has anyone got any wrecks/parts in Australia on here that can help me out???	tom438596	1	422	Sep 7, 2014 by TTRfan
	brake light (Preview) Hi,my brake light was staying on all the time so i checked the foot brake switch and all was well.However i removed the front brake switch and when i push the little pin it goes out.I dont see any way of adjusting this, is it just worn and needs replacing? Thanks in advance Lindsay	scottydog	7	746	Sep 3, 2014 by TTRfan
	Go ttr go (Preview) Well gotta thank this awesome forum again, had a leaking rear shock so pulled it out and sent it off and rebuilt the carby while I was at it. What a difference that has made as well. Moved the clip a notch, new seals and diaphragm. So easy doing all the above once I read all the stuff on here. Just great. ...	leigh	3	627	Sep 1, 2014 by TTRfan
	Frame (Preview) Well it would seem that there aren't any frames going in the UK and given that I have a cosmetically challenged (f%%**d) frame does anyone know if a ttr 225 frame will except a 250 engine or do I have to start cutting and doctoring the original ? REGARDS RIPPER	ripper	1	576	Aug 31, 2014 by TTRfan
	front brake question (Preview) Hi all, The front brake lever of my old TTR is broken, allowing to be actioned only by 2 fingers. Adding to that, it seized the fluid return 2-3 times. Is the full mechanism easy to find ? not very expensive ? (shipped worldwide, or at least to France), or should I still try to replace master cylinder with a...	sena	1	407	Aug 31, 2014 by Truxx
	Something sounds expensive (Preview) I've developed a grinding rattling metallic noise fromm around the engine sprocket - gearbox aria when riding,could it be gearbox bearingss, if so does this mean a complete engine strip, rest of engine runs as sweet as a nut,HELP	grandad	5	549	Aug 30, 2014 by ttboof
	Starter gear cover bolts made of cheese. (Preview) Trying to get at the starter gears and motor and have found 2 out of the three cover bolts sized. Have cut slots to try remove with no luck and am running out of options before I have no choice but to drill them out. At least the holes are through drilled so I should be able to clean them out. Anyway, Rant o...	Padowan	9	698	Aug 27, 2014 by Padowan
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