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

leigh · leigh

When I drowned my bike a while back I wondered how larger (not that large) bits of organic matter got in the motor as they wouldn't have fitted through the air filter and the filter was almost 100% clean on the inside despite having a layer of mud about 10mm thick on the outside. The exhaust didn't go under...

Vlad · Vlad

Hi everyone. I am new to this forum and did try to find related information, but unfortunately could not find anything. If there is an answer, i apologise for the same topic. I bought a yamaha ttr 250 in a quite good condition 1 year ago. Have always changed the oil every 700-1000 kilmeters. However, la...

JOHNYBOY · JOHNYBOY

i have stripped a cylinder head to do valves stem seals & shim up how do i know i have the inlet cam in its right place in the head & ex cam how do i identify them i dont know if someone has had them out & just popped em back anywhere i shall overall the head & put cams back in then shim up on the ben...

MikeBarnacle · MikeBarnacle

I think I've seen someone with a similar issue with this location before but im struggling to locate where. basicaly I've got an oil leak and wondering if there's a fix. I have a slight issue in alt hat the bolt I believe it's from seems to have a thread stripped by the previous owner, any thoughts guys? ...

BM Steve · BM Steve

Can I get some feedback from anyone that has fitted All Balls kits, wheel, steering, suspension or anything else I've seen some negative reports about All Balls Thanks ..

TTRfan · TTRfan

JOHNYBOY · JOHNYBOY

am i right in thinking the cyl head & barrell can be removed with engine in bike because i need to do my stem seals bike is running fine leave on side stand for a couple of hours when hot on restart it smokes on set off while it clears

davecambo · davecambo

I have been reading a lot of threads on the internet about TTR owners who removed the snorkel from the air box and installed twin air filters. I also read in new models such as my 2011 model you dont need to rejet carbs with exhaust upgrade. So, question is, will the bike run with more power if i remove the sn...

Dutch · Dutch

I just picked-up a 1999 TTR-250, put a new rear tire on the back and when I was tightening my rear axle, the snail-shaped chain adjuster on the castle nut side starts to slip when I get close to the torque spec. I'm thinking either the notches are worn down too much on the adjuster or there the washer that g...

petenz · petenz

what dia shims dose the TTR use... also what size range is the most commonly used... ..

Coast rider · Coast rider

Hi folks can anyone recommend an after market headlight for my 04 blue TTR preferably one that can take a knock or two so it doesn't break next time I decide to topple into a dry stone wall.

vinnie · vinnie

Had a go at mine with Optiglanz. Great stuff but a bit virulent, so I wrap the nearby engine parts and frame in cling film first. I don't spray it but pour some in to an old glass and paint it on with a cheap paint brush. Leave for a few minutes then wipe off; actually once you've got rid of most of it give it a go...

ttr steve · ttr steve

http://www.ebay.co.uk/itm/NEW-YAMAHA-MOTORCYCLE-PURPLE-FRAME-PAINT-TTR250-TTR-250-AEROSOL-SPRAY-CAN-TIN-TT-/351729093703?hash=item51e4b0...

dj9ten · dj9ten

Anyone know why my ignition button wires are gettin hot when I press the button .....killswitch Is workin fine and the lights are on....I've tried goin directly from the battery to the blue wires that connect the grey button and when I touch one of the wires(blue/white) it gets hot...when I touch the b...

94Garry · 94Garry

Fitted the bash guard i ordered from the shop, had to remove the rear brake pedal to access the engine bolt. It came out ok, but when putting it back in, it sheared, whats the best way to fix? Im thinking of drilling what is left out and the threads, then filling it with weld and re-tapping to the proper s...

JOHNYBOY · JOHNYBOY

what is the 3 connector unit under tank seat is it a diode from ac to dc

TTRfan · TTRfan

It's always difficult drilling holes for the number plate screws in thin plastic flexi plates. I tried a different approach this morning using a 6mm hollow punch and it worked a treat. I didn't take photos as I did it as I was too keen to see how effective it was! However, here is an "after" photo with jus...

suzbandit987 · suzbandit987

Would someone be so kind as to put up a digital picture of these arrows and alignment marks? I must be blind because I do not see any arrows or alignment marks. Also how thick are the friction plates supposed to be? What about the steel plates? My steel plates are visibly worn and one (perimeter) edge...

Sprok · Sprok

When lugging at low RPM I'm getting a weird backfire and motor stall that sounds like it's coming out of the header. Is this normal or maybe timing chain or something? The carb is freshly rebuilt and otherwise runs great when not idling. Stock everything (US 1999 model). Unknown time on the motor. It w...

il_maniaco · il_maniaco

Hi there, anybody knows the number of part of the cylinder gasket, and the cylinder head gasket in the Open Enduro models? is the same that the y2k models? I have an Open Enduro TTr, but I don't know the year, it doesn't have the VIN number, and the chassis is 4GY-085589, maybe '97- '98 or '99, i´m not shu...

JOHNYBOY · JOHNYBOY

just noticed shocker & bottom of engine wet it is black eng oil the bottom of the round breather is wet at the pipe that faces downhill but it is flattened at the end took off air box cover it is dry inside bike runs fine starts ok no smoke out of exhaust even on over run so no guide or stem seal problems t...

dj9ten · dj9ten

Hello all ....I'm new to the group ....I've owned a 99 ttr250 for about 2 weeeks now ....I bought it non running with no wiring harness basically (original one was rigged up some crazy way) .....so I grabbed my multi meter and downloadded manual ....I checked every thing and ended up replacing the igni...

dj9ten · dj9ten

I have a slight oil leak when trying to get my Ttr to start.....it's leaking from the metal piping that's connects the top end to bottom end .....the bolt it's right below the exhaust pipe on the right side just above the oil filter housing I believe ....any ideas on how to stop it from leaking ? Should I ta...

aabob · aabob

Hi, I have a 1997 250 Raid and over the last 2-300 mile the gear change from 1st to neutral has become very stiff and am now at the point where it just wont go at all unless the bike is off, even pulling away and going for 2nd is becoming stiff? Has anyone had this issue or knows what the problem might be? and an...

TTR250RIDER · TTR250RIDER

I have posted before about my ttr not working after about half throttle as it ran pretty good once I got it and cleaned it up and went through the carb it would go all the way now just recently will not. I thought it was running to lean so I had a custom sigma 6 jet kit built for the make model year and elevatio...

jttt · jttt

Hi, I am new to the forum and would like to know if anyone has an answer to a problem that started recently on my 1994 Yamaha TT 250 Raid. When I turn on the ignition the dash lights sometimes don't come on and allow me to start the engine. If I leave it for a while with the key in the on position suddenly they com...

Coast rider · Coast rider

Hi folks I'm having trouble with a snatchy throttle response off the bottom it's really difficult to control without slipping the clutch is this a known problem? or may have a carb problem if it's a known problem is there a cure or maybe a work around?

heffh084 · heffh084

Hi all, So I'm heading off to Mongolia in 10 days and my bike starts drinking oil, 1.4L in 400 miles! With help from a spectator rode up and down the road and deem that oil smoke is constant, not just after coasting with throttle closed, so i was pretty sure its rings not valve seals. Off comes the head and I...

Jimbo125 · Jimbo125

http://www.ebay.com.au/itm/Wiseco-Piston-Ring-Set-73mm-Standard-Bore-for-Yamaha-TTR250-1999-2006-/13...

TTRfan · TTRfan

I have had a bad morning in that everything I want to work on is broken or damaged I needed to renovate a front brake master cylinder and I guessed from looking at the cap screws that I wasn't going to get them out without major surgery and so it proved! So I drilled off the heads and removed the cap leaving a...

Topic		Started By	Replies	Views	Last Post
	Re-routing Crankcase breather hose (Preview) When I drowned my bike a while back I wondered how larger (not that large) bits of organic matter got in the motor as they wouldn't have fitted through the air filter and the filter was almost 100% clean on the inside despite having a layer of mud about 10mm thick on the outside. The exhaust didn't go under...	leigh	4	1153	Aug 31, 2016 by leigh
	Strange clatter from gearbox on 4,5 gears (Preview) Hi everyone. I am new to this forum and did try to find related information, but unfortunately could not find anything. If there is an answer, i apologise for the same topic. I bought a yamaha ttr 250 in a quite good condition 1 year ago. Have always changed the oil every 700-1000 kilmeters. However, la...	Vlad	6	896	Aug 30, 2016 by Vlad
	camshafts (Preview) i have stripped a cylinder head to do valves stem seals & shim up how do i know i have the inlet cam in its right place in the head & ex cam how do i identify them i dont know if someone has had them out & just popped em back anywhere i shall overall the head & put cams back in then shim up on the ben...	JOHNYBOY	10	813	Aug 29, 2016 by ttr steve
	Sorry more oil leak posts! (Preview) I think I've seen someone with a similar issue with this location before but im struggling to locate where. basicaly I've got an oil leak and wondering if there's a fix. I have a slight issue in alt hat the bolt I believe it's from seems to have a thread stripped by the previous owner, any thoughts guys? ...	MikeBarnacle	22	1472	Aug 29, 2016 by ttr steve
	All Balls Bearing Kits (Preview) Can I get some feedback from anyone that has fitted All Balls kits, wheel, steering, suspension or anything else I've seen some negative reports about All Balls Thanks ..	BM Steve	7	1086	Aug 25, 2016 by ttr steve
	how to bore and hone motorcycle cylinders to oversize and fit pistons (Preview)	TTRfan	11	1585	Aug 24, 2016 by ttr steve
	cylinder head removal (Preview) am i right in thinking the cyl head & barrell can be removed with engine in bike because i need to do my stem seals bike is running fine leave on side stand for a couple of hours when hot on restart it smokes on set off while it clears	JOHNYBOY	8	1427	Aug 22, 2016 by JOHNYBOY
	snorkel, air filter options (Preview) I have been reading a lot of threads on the internet about TTR owners who removed the snorkel from the air box and installed twin air filters. I also read in new models such as my 2011 model you dont need to rejet carbs with exhaust upgrade. So, question is, will the bike run with more power if i remove the sn...	davecambo	15	3138	Aug 17, 2016 by Clutha
	Snail Chain Adjuster Slipping (Preview) I just picked-up a 1999 TTR-250, put a new rear tire on the back and when I was tightening my rear axle, the snail-shaped chain adjuster on the castle nut side starts to slip when I get close to the torque spec. I'm thinking either the notches are worn down too much on the adjuster or there the washer that g...	Dutch	4	963	Aug 17, 2016 by Dutch
	Tappet shims (Preview) what dia shims dose the TTR use... also what size range is the most commonly used... ..	petenz	4	745	Aug 8, 2016 by ttr steve
	Replacement headlight for my bluie (Preview) Hi folks can anyone recommend an after market headlight for my 04 blue TTR preferably one that can take a knock or two so it doesn't break next time I decide to topple into a dry stone wall.	Coast rider	6	907	Jul 31, 2016 by comeragh
	Cleaning s/s exhaust header (Preview) Had a go at mine with Optiglanz. Great stuff but a bit virulent, so I wrap the nearby engine parts and frame in cling film first. I don't spray it but pour some in to an old glass and paint it on with a cheap paint brush. Leave for a few minutes then wipe off; actually once you've got rid of most of it give it a go...	vinnie	1	917	Jul 31, 2016 by Cubber
	OE Spray paint (Preview) http://www.ebay.co.uk/itm/NEW-YAMAHA-MOTORCYCLE-PURPLE-FRAME-PAINT-TTR250-TTR-250-AEROSOL-SPRAY-CAN-TIN-TT-/351729093703?hash=item51e4b0...	ttr steve	4	1302	Jul 31, 2016 by vinnie
	Ignition button wires gettin hot?? (Preview) Anyone know why my ignition button wires are gettin hot when I press the button .....killswitch Is workin fine and the lights are on....I've tried goin directly from the battery to the blue wires that connect the grey button and when I touch one of the wires(blue/white) it gets hot...when I touch the b...	dj9ten	20	1189	Jul 31, 2016 by TTRfan
	rear brake pivot bolt sheared. (Preview) Fitted the bash guard i ordered from the shop, had to remove the rear brake pedal to access the engine bolt. It came out ok, but when putting it back in, it sheared, whats the best way to fix? Im thinking of drilling what is left out and the threads, then filling it with weld and re-tapping to the proper s...	94Garry	5	1202	Jul 30, 2016 by 94Garry
	3 prong unit (Preview) what is the 3 connector unit under tank seat is it a diode from ac to dc	JOHNYBOY	2	711	Jul 21, 2016 by TTRfan
	Making number plate bolt holes in flexi plates (Preview) It's always difficult drilling holes for the number plate screws in thin plastic flexi plates. I tried a different approach this morning using a 6mm hollow punch and it worked a treat. I didn't take photos as I did it as I was too keen to see how effective it was! However, here is an "after" photo with jus...	TTRfan	4	783	Jul 21, 2016 by BM Steve
	Clutch Lever Alignment and Plate Thickness (Preview) Would someone be so kind as to put up a digital picture of these arrows and alignment marks? I must be blind because I do not see any arrows or alignment marks. Also how thick are the friction plates supposed to be? What about the steel plates? My steel plates are visibly worn and one (perimeter) edge...	suzbandit987	3	1153	Jul 19, 2016 by suzbandit987
	Need help diagnosing backfire at the header that stalls the motor (Preview) When lugging at low RPM I'm getting a weird backfire and motor stall that sounds like it's coming out of the header. Is this normal or maybe timing chain or something? The carb is freshly rebuilt and otherwise runs great when not idling. Stock everything (US 1999 model). Unknown time on the motor. It w...	Sprok	9	1426	Jul 18, 2016 by TTRfan
	Gasket number of part? (Preview) Hi there, anybody knows the number of part of the cylinder gasket, and the cylinder head gasket in the Open Enduro models? is the same that the y2k models? I have an Open Enduro TTr, but I don't know the year, it doesn't have the VIN number, and the chassis is 4GY-085589, maybe '97- '98 or '99, i´m not shu...	il_maniaco	3	773	Jul 18, 2016 by TTRfan
	oil leak (Preview) just noticed shocker & bottom of engine wet it is black eng oil the bottom of the round breather is wet at the pipe that faces downhill but it is flattened at the end took off air box cover it is dry inside bike runs fine starts ok no smoke out of exhaust even on over run so no guide or stem seal problems t...	JOHNYBOY	3	958	Jul 17, 2016 by TTRfan
	Main Switch Problems ....please help !!!!! (Preview) Hello all ....I'm new to the group ....I've owned a 99 ttr250 for about 2 weeeks now ....I bought it non running with no wiring harness basically (original one was rigged up some crazy way) .....so I grabbed my multi meter and downloadded manual ....I checked every thing and ended up replacing the igni...	dj9ten	8	1162	Jul 13, 2016 by TTRfan
	Stripped hole leaking oil (Preview) I have a slight oil leak when trying to get my Ttr to start.....it's leaking from the metal piping that's connects the top end to bottom end .....the bolt it's right below the exhaust pipe on the right side just above the oil filter housing I believe ....any ideas on how to stop it from leaking ? Should I ta...	dj9ten	3	701	Jul 12, 2016 by JOHNYBOY
	Stiff Gear Change (Preview) Hi, I have a 1997 250 Raid and over the last 2-300 mile the gear change from 1st to neutral has become very stiff and am now at the point where it just wont go at all unless the bike is off, even pulling away and going for 2nd is becoming stiff? Has anyone had this issue or knows what the problem might be? and an...	aabob	3	752	Jul 12, 2016 by TTRfan
	TTR 250 Not Igniting? Need Help!!! (Preview) I have posted before about my ttr not working after about half throttle as it ran pretty good once I got it and cleaned it up and went through the carb it would go all the way now just recently will not. I thought it was running to lean so I had a custom sigma 6 jet kit built for the make model year and elevatio...	TTR250RIDER	14	892	Jul 11, 2016 by TTRfan
	engine cut out problem (Preview) Hi, I am new to the forum and would like to know if anyone has an answer to a problem that started recently on my 1994 Yamaha TT 250 Raid. When I turn on the ignition the dash lights sometimes don't come on and allow me to start the engine. If I leave it for a while with the key in the on position suddenly they com...	jttt	4	868	Jul 8, 2016 by ttboof
	Snatchy throttle (Preview) Hi folks I'm having trouble with a snatchy throttle response off the bottom it's really difficult to control without slipping the clutch is this a known problem? or may have a carb problem if it's a known problem is there a cure or maybe a work around?	Coast rider	0	791	Jul 8, 2016 by Coast rider
	URGENT HELP PLEASE - OIL LEAK DIAGNOSIS (Preview) Hi all, So I'm heading off to Mongolia in 10 days and my bike starts drinking oil, 1.4L in 400 miles! With help from a spectator rode up and down the road and deem that oil smoke is constant, not just after coasting with throttle closed, so i was pretty sure its rings not valve seals. Off comes the head and I...	heffh084	10	1060	Jul 1, 2016 by TTRfan
	Piston ring replacement (Preview) http://www.ebay.com.au/itm/Wiseco-Piston-Ring-Set-73mm-Standard-Bore-for-Yamaha-TTR250-1999-2006-/13...	Jimbo125	9	1858	Jun 28, 2016 by Jimbo125
	Removing a broken stud (Preview) I have had a bad morning in that everything I want to work on is broken or damaged I needed to renovate a front brake master cylinder and I guessed from looking at the cap screws that I wasn't going to get them out without major surgery and so it proved! So I drilled off the heads and removed the cap leaving a...	TTRfan	3	807	Jun 27, 2016 by ttr steve
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