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

Christos · Christos

I recently changed the engine gaskets on my 350. When I pull the clutch upshifting or downshifting and pulling the throttle again there is hesitation and once the engine died. I suspect some kind of crack at the carb inlet, oil breather. Any other place I should look? I believe air is getting in there wh...

skinut · skinut

Hi, i have just rebuilt my front and rear suspension with the help of Brian's excellent guides, refilling with Motul 5W oil on the fronts and TQF transmission for the rear shock. When checking the damping adjustment on the fronts, the valves at the bottom of the leg seem to have no effect on what is suppo...

paul a · paul a

Hi Guys,has anyone come across this problem,left my 94 Raid idling for 10 mins,coughed and backfired a bit,idle all over the place,then noticed smoke coming from under the side panel. Took the side panel off which was very hot,only to see the battery tray melting onto exhaust and battery beginning t...

leigh · leigh

Hey peeps So, a few years ago my TTR started leaking from the base gasket. I stripped the motor and replaced it, it started leaking again after around 4000klms or so. When pulling the original gasket off you could see it had a split or maybe had been pinched on install. I wasn't that happy with the prep I d...

Tommy Young · Tommy Young

Good evening, Looking for a bit of advice. After a ride I noticed a patch of oil on the exhaust side that had been seeping out. Checked the oil and all is fine there so its not losing a lot. Looks to me that the base gasket has gone. Dry side just showing its not all the way round. New base and head gasket set f...

R Hocking · R Hocking

Hello all, A general question, how far dose the throttle slide have to move before contacting the accelerator pump lever arm. My slide is aprox 12mm open before reaching the arm which seems a bit much and defeats the object of a pump. Should I adjust the arm a little to make it open quicker. Cheers Bert.

TerryK · TerryK

Had a couple of hours spare so removed the muffler & engine pipe from the TTR, cleaned it up & gave it a polish. Was unsure if the gold colour would come back but after a short run it started to turn gold, looks heaps better, now if only the WRR pipe looked that good. I know there is no performance gai...

Christos · Christos

Hi guys, During a trail ride I found the thin tube in the photo snapped where the arrow points. Anyone knows what it does and where it goes?

TTR in greece · TTR in greece

Sprayed with penetrating fluid tried ring spanner and hammer, tried knocking it round with cold chisel, not budging so far. Scared to end up with a much bigger problem.... Thanks in advance of any help. Cheers John

Smedders · Smedders

Hi folks. Does anyone know if this rubber insert is a standard part of the Raid chain guard? I'm guessing the 52t rear sprocket is the cause of the wear, but unsure if it's a sacrificial part. Cheers -- Edited by Smedders on Wednesday 15th of September 2021 01:58:38 PM

Spyrious · Spyrious

Hello. Recently my ttr250 burned the stator (probably the original). I bought an aftermarket one and installed it. The bike charges ok now but,it runs bad,misfires,bogs and when i release the throttle it bangs loud from the exhaust and spits fire. I re-installed the original to se and the bike runs o...

Wardy · Wardy

Morning gents, have acquired a oil leak from the generator cover just below the starter. Is this a straightforward job to replace the gasket, or will I need other parts, oil seals, etc, or special tools. If it's just a remove cover and replace I'll have a go at it. Thanks in advance.

miltos · miltos

Hi! I recently had my engine siezed (at the motorway). It is now partialy stripped and it is obvious that the Conrod big end is stucked to the crankshaft. Also, at least one of the crankshaft bearings is affected (the crank can turn but it shows difficulty). Lastly, each one of the small camshafts caps (...

Jeff B · Jeff B

There is a Taiwanese manufacturing company selling our one way starter clutch assemblies on Ebay. The company is Frontier Motor. The price is incredible and they ship worldwide. I ordered one and it appears to be OEM quality. Does anyone have any knowledge about this company? https://www....

KTMjase · KTMjase

Hi all. I have a 250 Raid model with digital speedo.Was working fine, it still lights up but does not now register any KM/h, it just reads zero. I have read through forum which has been a great help.At the sensor near front sprocket I am getting 5v on blue wire and about 4.7v on yellow wire.When I spin the w...

Rossyboys · Rossyboys

I have purchased a second hand "Pro Circuit T4 muffler that needs to be repacked, and pipe bent to fit. Two questions 1) what's the best form of packing a) Blanket type or b) Fiber packing? 2) I live in Sydney Australia, and recommendations for a good muffle shop to put a couple of bends in the pipe to f...

Smedders · Smedders

Afternoon all. Any of you Raid guru's know what the two holes in the front and rear of the toolbox are for. I see there's a drain at the bottom, the other 2? Cheers Andy

Smedders · Smedders

Hi folks, I have a bit of play in the rear suspension linkage. It looks like just 2 of the bushes. Measured at the rear axle to the mudguard it's about 4mm. I'm more than happy to replace the necessary parts, just wondering if I can expect zero movement once completed? Thanks in advance

ttr steve · ttr steve

Just tried the majesty swap starter motor repair. Perfect fit, just take the back of yours and fit it to the majesty one. I bought the majesty 250, came from Italy and less than 40 quid including delivery

This was not my idea, but another forum members and it is great that he gave us all the heads up on th...

sslrgrt · sslrgrt

I've just replaced the seals in my front forks on a TTR 250 Raid. When re-assembling, the instructions are to use 550mm of oil then adjust the level to 130mm from the top of the inner fork tube (fully compressed). However, it then took another 40mm of oil to reach this level - total 590mm. Is this because t...

obelix · obelix

Hi Everybody I bought a 1993 TT250R open enduro last year. It started using oil and smoking like a 2-stroke. I used a boroscope to inspect the cyclinder wall and found vertical scrathes. I think the previous owner allowed sand to drop-in when change the sparkplug. I believe that the cylinder needs to b...

zacht · zacht

Hi, I have a 2005 TTR250TC. Was changing the oil today and when I got to the final step and opened the bleed bolt to test the oil pressure the bolt sheared off, leaving part of the shank in the threads. I was thinking of using something like an easy out bolt extractor to remove it, but wanted to see if anyone c...

iran ttr250 · iran ttr250

hi Friends on the all over the world this action for 2 year becauce parts of the ttr very scarce in the Middle East of asia. its love -- Edited by iran ttr250 on Wednesday 19th of May 2021 06:40:58 PM -- Edited by iran ttr250 on Wednesday 19th of May 2021 06:58:10 PM

Dan-in-a-Van · Dan-in-a-Van

Hi Tried to start the TTR for the first time in a few months. It turned over and started on the choke. Ran for a few seconds and stalled. It did this a couple more times before running a bit less rough. I switched it off, went and grabbed my jacket & helmet and then when I got back it did this? https://www...

Falkie · Falkie

Hope someone can help me out here. Just got back from green laning yesterday and on the way back was a rattling noise. I stopped and checked everything out (or so I thought) and couldn't find anything wrong. I thought maybe the chain was slightly slack so adjusted it today anyway which it did need. Howev...

Irve · Irve

Hello, My bike was always loud and today I've decided to meassure Db with a phone. On idle has it shown 80 Db on 20-25% trottle 105db :/. According to spec should it be 79Db for 3500RPM. I was looking for some info what to do or what can be the cause in google. What I have learned - this kind of muffler shouldn'...

sidecars48 · sidecars48

Hi all im after a new set of tyres, what sizes will fit without hitting my swingarm/ mudguard? will 120/90/18 fit on the rear? and will 90/90/21 fit the front? cheers

ben694 · ben694

So first of all hello this is my first post so be nice ;) So I bought this battered wreck from my mother (that bought it as a dooer upper/quick turn around) that clearly didn't inspect it propperly as the piston skirt had broken off and shattered into a million pieces that had been distributed all over the...

Forgorin · Forgorin

Well, I'm missing a guide chain stopper. There doesn't seem to be anything available anywhere in the world. And advice? It's part number 5 in the attached photo.

Primo_ · Primo_

Hi guys, I bit the bullet and picked up a 2000 TTR-250. Was riding it fine up until yesterday. It started bogging when I tried to go full throttle. Then it stayed reving higher than normal at fully closed throttle. Done is done and she's mine now. Now it starts up but only stays running when I apply t...

Topic		Started By	Replies	Views	Last Post
	Problem when pulling clutch (Preview) I recently changed the engine gaskets on my 350. When I pull the clutch upshifting or downshifting and pulling the throttle again there is hesitation and once the engine died. I suspect some kind of crack at the carb inlet, oil breather. Any other place I should look? I believe air is getting in there wh...	Christos	6	973	Oct 29, 2021 by Christos
	Suspension damper valve adjustment (Preview) Hi, i have just rebuilt my front and rear suspension with the help of Brian's excellent guides, refilling with Motul 5W oil on the fronts and TQF transmission for the rear shock. When checking the damping adjustment on the fronts, the valves at the bottom of the leg seem to have no effect on what is suppo...	skinut	1	1014	Oct 27, 2021 by TTRfan
	Battery tray melted! (Preview) Hi Guys,has anyone come across this problem,left my 94 Raid idling for 10 mins,coughed and backfired a bit,idle all over the place,then noticed smoke coming from under the side panel. Took the side panel off which was very hot,only to see the battery tray melting onto exhaust and battery beginning t...	paul a	6	1258	Oct 27, 2021 by paul a
	Base Gasket issues ( 1 2 ) (Preview) Hey peeps So, a few years ago my TTR started leaking from the base gasket. I stripped the motor and replaced it, it started leaking again after around 4000klms or so. When pulling the original gasket off you could see it had a split or maybe had been pinched on install. I wasn't that happy with the prep I d...	leigh	63	21310	Oct 26, 2021 by leigh
	Leaking base gasket? (Preview) Good evening, Looking for a bit of advice. After a ride I noticed a patch of oil on the exhaust side that had been seeping out. Checked the oil and all is fine there so its not losing a lot. Looks to me that the base gasket has gone. Dry side just showing its not all the way round. New base and head gasket set f...	Tommy Young	3	1025	Oct 18, 2021 by Tommy Young
	Accelerator pump arm. (Preview) Hello all, A general question, how far dose the throttle slide have to move before contacting the accelerator pump lever arm. My slide is aprox 12mm open before reaching the arm which seems a bit much and defeats the object of a pump. Should I adjust the arm a little to make it open quicker. Cheers Bert.	R Hocking	2	953	Oct 16, 2021 by R Hocking
	Cleaned up my exhaust (Preview) Had a couple of hours spare so removed the muffler & engine pipe from the TTR, cleaned it up & gave it a polish. Was unsure if the gold colour would come back but after a short run it started to turn gold, looks heaps better, now if only the WRR pipe looked that good. I know there is no performance gai...	TerryK	6	1088	Oct 1, 2021 by TerryK
	Tube snapped (Preview) Hi guys, During a trail ride I found the thin tube in the photo snapped where the arrow points. Anyone knows what it does and where it goes?	Christos	2	1023	Sep 29, 2021 by Christos
	Seized sump plug any advice please..... (Preview) Sprayed with penetrating fluid tried ring spanner and hammer, tried knocking it round with cold chisel, not budging so far. Scared to end up with a much bigger problem.... Thanks in advance of any help. Cheers John	TTR in greece	3	927	Sep 28, 2021 by Rossyboys
	Ttr250raid chain guard (Preview) Hi folks. Does anyone know if this rubber insert is a standard part of the Raid chain guard? I'm guessing the 52t rear sprocket is the cause of the wear, but unsure if it's a sacrificial part. Cheers -- Edited by Smedders on Wednesday 15th of September 2021 01:58:38 PM	Smedders	5	1025	Sep 23, 2021 by Smedders
	Stator replacement gone wrong,but why? stator misfire (Preview) Hello. Recently my ttr250 burned the stator (probably the original). I bought an aftermarket one and installed it. The bike charges ok now but,it runs bad,misfires,bogs and when i release the throttle it bangs loud from the exhaust and spits fire. I re-installed the original to se and the bike runs o...	Spyrious	9	1211	Sep 4, 2021 by mossproof
	Generator cover oil leak (Preview) Morning gents, have acquired a oil leak from the generator cover just below the starter. Is this a straightforward job to replace the gasket, or will I need other parts, oil seals, etc, or special tools. If it's just a remove cover and replace I'll have a go at it. Thanks in advance.	Wardy	2	1052	Aug 28, 2021 by Wardy
	Conrod big end seizure (Preview) Hi! I recently had my engine siezed (at the motorway). It is now partialy stripped and it is obvious that the Conrod big end is stucked to the crankshaft. Also, at least one of the crankshaft bearings is affected (the crank can turn but it shows difficulty). Lastly, each one of the small camshafts caps (...	miltos	9	1437	Aug 26, 2021 by mossproof
	New Sprag Clutch Assembly on Ebay (Preview) There is a Taiwanese manufacturing company selling our one way starter clutch assemblies on Ebay. The company is Frontier Motor. The price is incredible and they ship worldwide. I ordered one and it appears to be OEM quality. Does anyone have any knowledge about this company? https://www....	Jeff B	12	2353	Aug 24, 2021 by TTRfan
	Digital speedo not registering kph (Preview) Hi all. I have a 250 Raid model with digital speedo.Was working fine, it still lights up but does not now register any KM/h, it just reads zero. I have read through forum which has been a great help.At the sensor near front sprocket I am getting 5v on blue wire and about 4.7v on yellow wire.When I spin the w...	KTMjase	5	994	Aug 18, 2021 by ttr steve
	I have another exhaust ProCircuitT4 that needs new packing and bends in pipe to fit (Preview) I have purchased a second hand "Pro Circuit T4 muffler that needs to be repacked, and pipe bent to fit. Two questions 1) what's the best form of packing a) Blanket type or b) Fiber packing? 2) I live in Sydney Australia, and recommendations for a good muffle shop to put a couple of bends in the pipe to f...	Rossyboys	8	1303	Aug 11, 2021 by Rossyboys
	Raid toolbox holes (Preview) Afternoon all. Any of you Raid guru's know what the two holes in the front and rear of the toolbox are for. I see there's a drain at the bottom, the other 2? Cheers Andy	Smedders	0	1115	Jul 22, 2021 by Smedders
	Raid suspension movement (Preview) Hi folks, I have a bit of play in the rear suspension linkage. It looks like just 2 of the bushes. Measured at the rear axle to the mudguard it's about 4mm. I'm more than happy to replace the necessary parts, just wondering if I can expect zero movement once completed? Thanks in advance	Smedders	3	965	Jul 5, 2021 by ttr steve
	Cheap and easy starter repair using a Yamaha Majesty starter (Preview) Just tried the majesty swap starter motor repair. Perfect fit, just take the back of yours and fit it to the majesty one. I bought the majesty 250, came from Italy and less than 40 quid including delivery This was not my idea, but another forum members and it is great that he gave us all the heads up on th...	ttr steve	8	2416	Jun 28, 2021 by TTRfan
	Raid fork all level (Preview) I've just replaced the seals in my front forks on a TTR 250 Raid. When re-assembling, the instructions are to use 550mm of oil then adjust the level to 130mm from the top of the inner fork tube (fully compressed). However, it then took another 40mm of oil to reach this level - total 590mm. Is this because t...	sslrgrt	3	1667	Jun 4, 2021 by ttboof
	engine cylinder bore info (Preview) Hi Everybody I bought a 1993 TT250R open enduro last year. It started using oil and smoking like a 2-stroke. I used a boroscope to inspect the cyclinder wall and found vertical scrathes. I think the previous owner allowed sand to drop-in when change the sparkplug. I believe that the cylinder needs to b...	obelix	2	1125	May 24, 2021 by obelix
	Oil Pressure Bleed Screw (Preview) Hi, I have a 2005 TTR250TC. Was changing the oil today and when I got to the final step and opened the bleed bolt to test the oil pressure the bolt sheared off, leaving part of the shank in the threads. I was thinking of using something like an easy out bolt extractor to remove it, but wanted to see if anyone c...	zacht	10	1396	May 22, 2021 by zacht
	iranian ttr250 repaired (Preview) hi Friends on the all over the world this action for 2 year becauce parts of the ttr very scarce in the Middle East of asia. its love -- Edited by iran ttr250 on Wednesday 19th of May 2021 06:40:58 PM -- Edited by iran ttr250 on Wednesday 19th of May 2021 06:58:10 PM	iran ttr250	10	1188	May 21, 2021 by iran ttr250
	Sprag clutch or starter? (Preview) Hi Tried to start the TTR for the first time in a few months. It turned over and started on the choke. Ran for a few seconds and stalled. It did this a couple more times before running a bit less rough. I switched it off, went and grabbed my jacket & helmet and then when I got back it did this? https://www...	Dan-in-a-Van	14	2272	May 21, 2021 by iran ttr250
	Chain roller - what is missing ? - something dropped off ! (Preview) Hope someone can help me out here. Just got back from green laning yesterday and on the way back was a rattling noise. I stopped and checked everything out (or so I thought) and couldn't find anything wrong. I thought maybe the chain was slightly slack so adjusted it today anyway which it did need. Howev...	Falkie	15	6927	May 13, 2021 by mossproof
	Bike is running loud (80 Db on idle) (Preview) Hello, My bike was always loud and today I've decided to meassure Db with a phone. On idle has it shown 80 Db on 20-25% trottle 105db :/. According to spec should it be 79Db for 3500RPM. I was looking for some info what to do or what can be the cause in google. What I have learned - this kind of muffler shouldn'...	Irve	2	1298	May 10, 2021 by TerryK
	TYRES (Preview) Hi all im after a new set of tyres, what sizes will fit without hitting my swingarm/ mudguard? will 120/90/18 fit on the rear? and will 90/90/21 fit the front? cheers	sidecars48	5	1913	Apr 11, 2021 by Kaos
	neutral switch wire placement (Preview) So first of all hello this is my first post so be nice ;) So I bought this battered wreck from my mother (that bought it as a dooer upper/quick turn around) that clearly didn't inspect it propperly as the piston skirt had broken off and shattered into a million pieces that had been distributed all over the...	ben694	31	18174	Apr 9, 2021 by TTRfan
	Chain stopper (Preview) Well, I'm missing a guide chain stopper. There doesn't seem to be anything available anywhere in the world. And advice? It's part number 5 in the attached photo.	Forgorin	3	1199	Mar 13, 2021 by Forgorin
	2000 TTR-250 (Preview) Hi guys, I bit the bullet and picked up a 2000 TTR-250. Was riding it fine up until yesterday. It started bogging when I tried to go full throttle. Then it stayed reving higher than normal at fully closed throttle. Done is done and she's mine now. Now it starts up but only stays running when I apply t...	Primo_	17	2041	Mar 13, 2021 by Primo_
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