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

Jagertruppen · Jagertruppen

Hello, I have had my 2003 ttr for about 8 months and ive been doing routine maintenance but i have ran into a problem with my oil filter cover. i over tightened the bottom screw on the cover and stripped it and im thinking of doing a helicoil but i need the thread size and i cant find it anywhere online. Im thi...

dlee22 · dlee22

We are currently in North Brazil and oil consumption has just shot up dramatically. my ttr350 only visually smokes under faster acceleration for an overtake but is burning so much oil now! I did about 250 miles yesterday at 50mph and burn't around 600ml 😵‍💫 Starts incredibly easily but the Kickstar...

Scootsmith71 · Scootsmith71

Anyone have it or suggest a close match? Cheers.

Fluster · Fluster

I thought I had an oil leak from the starter gear cover but was wrong. It only leaks when I'm riding. Where would you recommend looking next? Replacing the generator cover gasket?

Fluster · Fluster

Could someone do me a big favour please? I'm in a world of pain with replacement stators and 'no spark' issues.Pop your plug cap off, or have some other way to stop the bike starting.Disconnect the three-wire connector under the RHS of the tank. The wires come from the stator and are white.Set your mult...

TTRfan · TTRfan

Then help is at hand Lots of used parts have been added to the Totally TTRs shop today including some "hard to find" parts such as a blue rear mudguard - see here The full range of used parts that Steve carries is here If you don't find what you want then email him - sales@totallyttrs.com - as you never know...

TTRfan · TTRfan

I bought an Optimate III 14 years ago and it is still giving sterling service It came with a "permanent lead" which stays connected to the battery and has a waterproof connection that fits the Optimate lead. I found the box the other day with the original lead still in it and fitted it to my Golden Flash a...

TTRfan · TTRfan

https://ttr250.com/Floatpost/TTR_float_post_repair.htm

BikerMat · BikerMat

Hey guys, Mat here I have two broken mountings on my airbox, caused by a perished bump stop on the rear shock allowing the tire to grab the mudflap and rip the airbox downwards after what I presume was a totally sick jump (Thankyou previous owner). This is the top mounting. My plan was to heat the plastic a...

TTRfan · TTRfan

Does anyone have a Yamaha part number (and/or price) for the TTR decompressor kit please? I have "collected" a kit and have a buyer interested but can't find details on the web. No part number on the packets which is odd. Also, has anyone got a decompressor fitted and can tell me where the par...

l0k1rider · l0k1rider

Like many other users I have never really solved the problem of a dragging front brake on my TTR250, I have other bikes but have no problems with the brakes. I could service it, but it would soon start dragging again, wearing out pads & disc. I finally realized the problem could not be solved with the...

dlee22 · dlee22

Hi all, We have made it to Boliva on this trip and are doing some of the best trails and unpaved roads on the trip so far! Sadly Robbie's ruined her old shock and it shot all the oil out, bit of a shame! Quite lucky it was now rather than in a few weeks time as we are planning on riding to Manaus, Brazil which is...

Fluster · Fluster

Hi, I noticed an oil leak only when the bike was running. I think it's coming from the cover where the start connects to the engine. I've had a look at the O-ring and it appears to be fine but I've ordered a replacement anyway (2mm Section 76mm Bore NITRILE 70 Rubber O-Rings from Simply Bearings) to be on th...

Nic_B · Nic_B

Hi All Trying to nut out the correct wiring for the Speedo, warning lamps, indicator and headlamp switches etc.... I don't have a genuine speedo on the bike and I am trying to wire up some warning lights, Ign, Lamps, Neutral etc... Have the workshop manual, yet other than the headlamp wiring I can't fin...

TTRfan · TTRfan

A simple tip that I got from Steve at Totally TTRs. Slip a rubber glove over the air intake when you are doing a full power wash Depending on how muddy the conditions are that you ride in, it is worth occasionally taking off the side panels, seat, rear mudguard, tank, battery box and headlight to give the...

PaulFoxton · PaulFoxton

Oops! Had a bit of an off today and have smashed the speedo and broken off the warning light assembly too (as well as knackered the cowl). Does anyone have any ideas for replacement, since I assume I won't be able to get stock replacements easily. I know I can change to an aftermarket digital speedo and p...

d0wse · d0wse

Hello just joined the forum, used the search function to no real help. Purchased a 1999 USDM 250 a couple weeks back. I had a 225 and loved it, so I was hoping to jump to its...

650Katman · 650Katman

Hi there, i got back home from a ride recently and discovered the top roller and it's mounting have left the TTR. Could anyone help with some dimensions or some kind of template so i can get a mount sorted and fit a new roller. Many thanks

bkellzy · bkellzy

Curious what oil I should be using in my bike? It’s a 2003 Yamaha TTR 250. Owners manual says 10w-30 or 20w-40 (depending on outside temperature?) I know a lot of you guys on this forum are using 10w-40 semi-synthetic. I recently spoke to a Yamaha Service representative and he said he wouldn’t use 10w-4...

TTRHead · TTRHead

hello everyone, I have a 2004 TTR that I am tinkering around with at the moment that smells of petrol, closer inspection has revealed the carb is getting wet around the diaphragm cover area, the Bike runs and rides fine, anyone else has this issue -- Edited by TTRHead on Monday 22nd of July 2019 02:54:53...

Crocker · Crocker

Morning all, Just wondering if anyone has any experience of successfully upgrading the suspension on their bikes? The front end tends to be a bit twitchy with the whole set up being very soft. I know it’s a trail bike, but the front does tend to ‘dive’. Can you buy upgraded springs in the UK? I’m around 90...

tiddler · tiddler

I’ve managed to rip the wires out of the back of the clutch switch. My TTR will now only start if it’s in neutral. Logic says I should be able to join the two wires together and make it so it will start in neutral and in gear whether the clutch is pulled in or not. I’ve tried that as a temporary solution but the b...

dlowenst · dlowenst

Following on my earlier post, I have removed the head, barrel and piston and determined that the existing piston is a Wiseco 4689M07350, which is 73.5 mm nominal (0.5mm over stock). While I fully recognize that it may make sense to replace the piston regardless, for diagnostic purposes I want to veri...

baisleyde · baisleyde

My bike really runs perfect , but when I go down steep hills (like so steep I'm skidding on two wheels and really cant stop) , the bike will flood out , I have to open the throttle a bit to get to start again. I really don't know what it could be , possibly float level ? I have never had an issue like this with any o...

bryo62 · bryo62

Hello all, New member. I just picked up a 2004 TTR250. I haven't ridden the bike yet. Going through it now. It has a mangled carburetor, PO broke float bowl post and I'm working on that. Anyways I have another issue I think. See below. I see a lot of threads about draining battery with key off but my...

Ttboof · Ttboof

A couple of years ago I fitted the ebc heavy duty cluch . I'm finding the lever pull too firm . Anyone tried going back to original springs with the new plates

Jamie_w · Jamie_w

I recently bought my first TTR OE (through the forum and from member Rob). I took it out on it's first outing recently and i'm surely converted! Now, I'm 6"5 and about 100KG and wondered if any one had advice for modifications for a vertically abnormal height such as mine? My local garage pumped up the f...

DTRAL · DTRAL

Hoping for a quick answer since I have yet to dl a shop or Haynes manual... I'm planning to order a hydraulic pressure switch for my rear brake light, and I'm seeing two different thread pitches available... .0 and 1.25. Does anyone know the thread pitch offhand? Replacing this part on the bike- Part...

dlowenst · dlowenst

About to start a top-end rebuild on my '06 U.S.-spec TT-R250. I've done a limited degree of poking around and haven't found many complete kits (piston, rings, gaskets, etc.), but I do see the Wossner piston kit and Athena gasket kits via several sources including TotallyTTRs, plus a few other option...

650Katman · 650Katman

My standard exhaust on white oe has a hole by mounting bracket nr header pipe. It's been welded up twice. So looking for a fairly cheap replacement. I've seen posts about yz 250 r silencer but is it an easy fit? I've also seen an American ttr exhaust on eBay . I'd love one of the stainless ones from totally t...

Topic		Started By	Replies	Views	Last Post
	Oil filter cover bolts thread pitch (Preview) Hello, I have had my 2003 ttr for about 8 months and ive been doing routine maintenance but i have ran into a problem with my oil filter cover. i over tightened the bottom screw on the cover and stripped it and im thinking of doing a helicoil but i need the thread size and i cant find it anywhere online. Im thi...	Jagertruppen	4	575	Sep 4, 2023 by Jagertruppen
	Oil consumption problem (Preview) We are currently in North Brazil and oil consumption has just shot up dramatically. my ttr350 only visually smokes under faster acceleration for an overtake but is burning so much oil now! I did about 250 miles yesterday at 50mph and burn't around 600ml 😵‍💫 Starts incredibly easily but the Kickstar...	dlee22	5	677	Aug 30, 2023 by dlee22
	White metal tank OE paint code? (Preview) Anyone have it or suggest a close match? Cheers.	Scootsmith71	2	586	Aug 24, 2023 by KTMjase
	Oil Leak - Generator cover gasket? (Preview) I thought I had an oil leak from the starter gear cover but was wrong. It only leaks when I'm riding. Where would you recommend looking next? Replacing the generator cover gasket?	Fluster	5	891	Aug 7, 2023 by TTRfan
	Stator voltage (Preview) Could someone do me a big favour please? I'm in a world of pain with replacement stators and 'no spark' issues.Pop your plug cap off, or have some other way to stop the bike starting.Disconnect the three-wire connector under the RHS of the tank. The wires come from the stator and are white.Set your mult...	Fluster	5	633	Aug 5, 2023 by mossproof
	Rebuilding or maintaining your TTR on a budget? (Preview) Then help is at hand Lots of used parts have been added to the Totally TTRs shop today including some "hard to find" parts such as a blue rear mudguard - see here The full range of used parts that Steve carries is here If you don't find what you want then email him - sales@totallyttrs.com - as you never know...	TTRfan	0	534	Aug 1, 2023 by TTRfan
	Keeping the battery charged up! (Preview) I bought an Optimate III 14 years ago and it is still giving sterling service It came with a "permanent lead" which stays connected to the battery and has a waterproof connection that fits the Optimate lead. I found the box the other day with the original lead still in it and fitted it to my Golden Flash a...	TTRfan	3	1443	Jul 27, 2023 by UncleFZ
	Carburettor float post repair - Part 2! (Preview) https://ttr250.com/Floatpost/TTR_float_post_repair.htm	TTRfan	5	643	Jul 27, 2023 by pug
	Broken airbox mountings - How would you repair these? (Preview) Hey guys, Mat here I have two broken mountings on my airbox, caused by a perished bump stop on the rear shock allowing the tire to grab the mudflap and rip the airbox downwards after what I presume was a totally sick jump (Thankyou previous owner). This is the top mounting. My plan was to heat the plastic a...	BikerMat	12	1539	Jul 20, 2023 by JOHNYBOY
	Decompressor kit SOLD SOLD SOLD! (Preview) Does anyone have a Yamaha part number (and/or price) for the TTR decompressor kit please? I have "collected" a kit and have a buyer interested but can't find details on the web. No part number on the packets which is odd. Also, has anyone got a decompressor fitted and can tell me where the par...	TTRfan	10	3505	Jul 18, 2023 by TWR250funbike
	Front brake dragging. Problem solved after nearly 10 years. (Preview) Like many other users I have never really solved the problem of a dragging front brake on my TTR250, I have other bikes but have no problems with the brakes. I could service it, but it would soon start dragging again, wearing out pads & disc. I finally realized the problem could not be solved with the...	l0k1rider	2	710	Jul 14, 2023 by l0k1rider
	Rear shock oil leak (Preview) Hi all, We have made it to Boliva on this trip and are doing some of the best trails and unpaved roads on the trip so far! Sadly Robbie's ruined her old shock and it shot all the oil out, bit of a shame! Quite lucky it was now rather than in a few weeks time as we are planning on riding to Manaus, Brazil which is...	dlee22	8	687	Jul 13, 2023 by dlee22
	Oil leak from starter motor cover (Preview) Hi, I noticed an oil leak only when the bike was running. I think it's coming from the cover where the start connects to the engine. I've had a look at the O-ring and it appears to be fine but I've ordered a replacement anyway (2mm Section 76mm Bore NITRILE 70 Rubber O-Rings from Simply Bearings) to be on th...	Fluster	3	818	Jul 9, 2023 by TTRfan
	Wiring Diagram, Dash, and control switches. (Preview) Hi All Trying to nut out the correct wiring for the Speedo, warning lamps, indicator and headlamp switches etc.... I don't have a genuine speedo on the bike and I am trying to wire up some warning lights, Ign, Lamps, Neutral etc... Have the workshop manual, yet other than the headlamp wiring I can't fin...	Nic_B	1	1016	Jul 2, 2023 by mossproof
	Tips - how to keep water out of the airbox when power washing your TTR - and other tips! (Preview) A simple tip that I got from Steve at Totally TTRs. Slip a rubber glove over the air intake when you are doing a full power wash Depending on how muddy the conditions are that you ride in, it is worth occasionally taking off the side panels, seat, rear mudguard, tank, battery box and headlight to give the...	TTRfan	3	644	Jun 14, 2023 by TTRfan
	Options to replace speedo assembly and warning lights (Preview) Oops! Had a bit of an off today and have smashed the speedo and broken off the warning light assembly too (as well as knackered the cowl). Does anyone have any ideas for replacement, since I assume I won't be able to get stock replacements easily. I know I can change to an aftermarket digital speedo and p...	PaulFoxton	9	749	Jun 7, 2023 by TTRfan
	Electrical help/measurements CDI Electrical Breakup Tune (Preview) Hello just joined the forum, used the search function to no real help. Purchased a 1999 USDM 250 a couple weeks back. I had a 225 and loved it, so I was hoping to jump to its...	d0wse	1	985	Jun 7, 2023 by TTRfan
	Top roller has departed (Preview) Hi there, i got back home from a ride recently and discovered the top roller and it's mounting have left the TTR. Could anyone help with some dimensions or some kind of template so i can get a mount sorted and fit a new roller. Many thanks	650Katman	3	603	May 28, 2023 by Ttboof
	Oil Type - 2003 Yamaha TTR 250 (Preview) Curious what oil I should be using in my bike? It’s a 2003 Yamaha TTR 250. Owners manual says 10w-30 or 20w-40 (depending on outside temperature?) I know a lot of you guys on this forum are using 10w-40 semi-synthetic. I recently spoke to a Yamaha Service representative and he said he wouldn’t use 10w-4...	bkellzy	5	1351	May 25, 2023 by KiwiJeff
	Carb leak (Preview) hello everyone, I have a 2004 TTR that I am tinkering around with at the moment that smells of petrol, closer inspection has revealed the carb is getting wet around the diaphragm cover area, the Bike runs and rides fine, anyone else has this issue -- Edited by TTRHead on Monday 22nd of July 2019 02:54:53...	TTRHead	6	1519	May 8, 2023 by TbirdX
	2003 TTR Suspension Upgrades (Preview) Morning all, Just wondering if anyone has any experience of successfully upgrading the suspension on their bikes? The front end tends to be a bit twitchy with the whole set up being very soft. I know it’s a trail bike, but the front does tend to ‘dive’. Can you buy upgraded springs in the UK? I’m around 90...	Crocker	4	806	May 5, 2023 by Ttboof
	Clutch switch (Preview) I’ve managed to rip the wires out of the back of the clutch switch. My TTR will now only start if it’s in neutral. Logic says I should be able to join the two wires together and make it so it will start in neutral and in gear whether the clutch is pulled in or not. I’ve tried that as a temporary solution but the b...	tiddler	2	593	Apr 17, 2023 by ttr steve
	Wiseco Piston Clearances (Preview) Following on my earlier post, I have removed the head, barrel and piston and determined that the existing piston is a Wiseco 4689M07350, which is 73.5 mm nominal (0.5mm over stock). While I fully recognize that it may make sense to replace the piston regardless, for diagnostic purposes I want to veri...	dlowenst	2	603	Apr 14, 2023 by TTRfan
	Bike stalls on extremly steep downhills (Preview) My bike really runs perfect , but when I go down steep hills (like so steep I'm skidding on two wheels and really cant stop) , the bike will flood out , I have to open the throttle a bit to get to start again. I really don't know what it could be , possibly float level ? I have never had an issue like this with any o...	baisleyde	5	798	Apr 5, 2023 by TTRfan
	Leaving key on drains battery (Preview) Hello all, New member. I just picked up a 2004 TTR250. I haven't ridden the bike yet. Going through it now. It has a mangled carburetor, PO broke float bowl post and I'm working on that. Anyways I have another issue I think. See below. I see a lot of threads about draining battery with key off but my...	bryo62	2	599	Apr 2, 2023 by bryo62
	Ebc heavy duty clutch too heavy ? (Preview) A couple of years ago I fitted the ebc heavy duty cluch . I'm finding the lever pull too firm . Anyone tried going back to original springs with the new plates	Ttboof	6	661	Apr 2, 2023 by Jeff B
	Tall boy modifications and general advice (Preview) I recently bought my first TTR OE (through the forum and from member Rob). I took it out on it's first outing recently and i'm surely converted! Now, I'm 6"5 and about 100KG and wondered if any one had advice for modifications for a vertically abnormal height such as mine? My local garage pumped up the f...	Jamie_w	5	692	Mar 17, 2023 by TTRfan
	Rear Master Cyl - Banjo Bolt Thread Pitch? (Preview) Hoping for a quick answer since I have yet to dl a shop or Haynes manual... I'm planning to order a hydraulic pressure switch for my rear brake light, and I'm seeing two different thread pitches available... .0 and 1.25. Does anyone know the thread pitch offhand? Replacing this part on the bike- Part...	DTRAL	8	840	Mar 16, 2023 by TTRfan
	Top-End Rebuild Parts Kits (Preview) About to start a top-end rebuild on my '06 U.S.-spec TT-R250. I've done a limited degree of poking around and haven't found many complete kits (piston, rings, gaskets, etc.), but I do see the Wossner piston kit and Athena gasket kits via several sources including TotallyTTRs, plus a few other option...	dlowenst	3	713	Mar 12, 2023 by TTRfan
	Silencer replacement (Preview) My standard exhaust on white oe has a hole by mounting bracket nr header pipe. It's been welded up twice. So looking for a fairly cheap replacement. I've seen posts about yz 250 r silencer but is it an easy fit? I've also seen an American ttr exhaust on eBay . I'd love one of the stainless ones from totally t...	650Katman	2	587	Mar 12, 2023 by 650Katman
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