@Calum I didn't think of that I'm sure they must be raking it as you said but surely in this exceptional case that has affected and touched pretty much the whole world they could do their bit and reduce their commission assuming that is how it works. Apparently he spent 3 years as a POW and he's an ex motorcycle racer. He was in the army endurance racing team and he also set up a motorcycle training school for the army. Visordown did a piece on him I was reading this morning. Captain Tom. What an exceptional man!

@tim85 on my bike they are overflow/breather pipes as they connect to nothing, just directed downwards. I think The smaller lower one is for when you drain the float bowl. The carb warming pipes are on the other side and a bit higher. Sort of directly behind the choke linkage, 2 pipes quite close together and pointing upwards My warming pipes have just been removed and looped at the cylinder head by the previous owner. I guess they're only needed if you live in a cold country.

@Calum I understand what you're saying about the exhaust wrap, that also came already on the bike, I may take it off. As for the CDI it might have been changed already as it's a 3rm-30 which I'm led to believe is good also quite rare is it not? Also I might add the log book says first registered in the UK 2007 I was told it's a French import.

It has the Athena 170 bore kit, not what I would have chose especially after reading @Calum's opinion on them about port timing etc but it was on it when I bought it. So was the nice shiny new full dep exhaust though not sure how long the front part will stay that shiny as I gather from what I've read on this forum they rust easily. Does anyone here know of anything that can coat/treat it to slow down the rust?
A few things on my to do list eg. Get the powervalve working as the servo is disconnected and it's set fully open, I've bought a battery as it didn't have one so I'll fit that and look at connecting ypvs back up. Also I must look at the jetting as it currently has a 290 which I thought seems a little big? Anybody here used a 290? Any thoughts please? It's a 2000 model.

@Calum sorry my mistake I'm blaming tiredness I meant Speedo and rev counter not throttle cable.

Hello forum, I'm Markus.
I bought my 2000 dt125r back in September last year but still not 'on the road' yet. It's currently stored at my place of work which is on the local port estate so I have ridden it a few times around the private roads inside the estate. All seems good as far as I can tell. It has no lights or clocks but they all came included in a box with the sale except for throttle and rev counter cable which I have since bought for about £6 each brand new. I guess not genuine Yamaha items but I don't suppose that would matter? Will be on the road in the next month so I'll let you all know how that goes and look forward to getting to know you all though I think over the past few months I have read almost every post on here and feel like I know you all quite well already and have learnt so much about the dtr so thought it only fair I introduce myself and say thanks for sharing your knowledge.

@DTR12503 yes it is meant to cover the outlet for the overflow and it lifts at a certain preset pressure which should be stated on the top of the cap and it could be worn and lifting slightly too soon. Different caps are set for different pressures so make sure you order the correct one.

@DTR12503 you say that the only thing you haven't checked is replace the barrel but you haven't mentioned the radiator pressure cap. Don't overlook the importance of this item as it regulates the pressure in the cooling system and at a certain pressure it opens enough to allow expansion into the expansion bottle but if it opens too soon it would cause the problem that you are having. Too low pressure in the cooling system would cause the water to boil at a lot lower temperature hence the head gasket failing. the idea is water under pressure boils at a much higher temperature and the pressure is regulated by the radiator 'pressure' cap and they can fail.

@Calum no worries mate. When somebody asks that question it usually is the warmer pipes they're refering to as I think they're quite a rarity. Well in the UK at least.

@Oisin is it possible at all that when you replaced said fuel pipe it was connected back up incorrectly/ wrong place/wrong way around? Just a thought.

@kevb1967 no it's not restricted but if you have the 3rm-30 that is the best one, only available on the French models from 1999-2002 and apparently quite special and rare. Here's a link to a German website which explains the different CDI's. http://dtpedia.de/mediawiki/index.php/CDI_Steuerteile
I don't think your problem is a restriction problem, only starting on full throttle from hot? Maybe fuelling or maybe compression? Sounds like your bike is a full power unrestricted french import.

@SpookDog
Yamaha DT125R Boost bottle yeis chamber 2 DTR DT125 DTR125 YPVS TZR GPR SC125

@kevb1967 mine has no clocks and it has the 170 kit but it does have very good top end and revs freely. Also the powervalve is pinned open so after about 6k it sort of comes alive. Is your powervalve working ok?

@kevb1967 welcome, very nice looking DT you have. My French import has the 3rm-30 CDI and I understand that they're one of the best.

@Phil-k you're welcome Phill. Looking forward to seeing how it turns out.

@Phil-k I'm quite sure that AliExpress sells dtr Speedo too, if being a copy bothers you that much then you could just use the face to replace yours and keep/sell the rest for spares or option 2, a professional sign writer/printers would be able to make a transfer or stencil to cover yours. I'm sure it could be printed out on a clear or black or actually any colour background and that would probably be the cheapest and quickest option and they'd probably make an even better job than the Chinese copy (not that I think there's anything wrong with them). I would find a sign writer/printing shop and take your clock face and a picture of what it should look like.

@Calum I was going to say I'm sure I've read about that problem before on this forum.

@Haako-Smith someone on the forum posted a link to download the manual for free. Use the search feature it's here somewhere.

@Haako-Smith the manual says 16 lb/ft which I believe is about 22 nm.

@LucasHutch I agree with calum. Barrel spacers would change the port timing but they are on eBay if you do want them. I would post a link but I don't know how to but if you search eBay for 'yamaha dt125r barrel spacers you will find them in various thickness.