DT125R FORUM

Forum patched and updated. Fixed some database corruption issues which was having a knock-on effect with emojis so hopefully they're working now.

Hey All! Due to personal circumstances I will be needing to suspend the DT125R Forum for an indeterminate amount of time. This is an advance notice to say that at some point, in the not to distant future, I will be switching off this forum. My intention is to relocate the forum/database hosting as the current situation is no longer economically viable. It is unclear at the moment as to what the future will be for this forum, but rest assured it will be back online in the fullness of time. I appreciate each and every one of you that contributes to this forum so there is a BIG thank you from me. Take care & keep smoking! Calum

There are wiring diagrams and manuals around on this site. Try searching using the built in search. Another great tip is using Google In Google search engine do site:dt125r.co.uk wiring diagram 6 wire and let Google indexing do the heavy lifting.

Hmm I did already, anything else I should check?

Hey guys, I recently got a new Yamaha DT175 from the dealership, and I wanted to ask about the engine break-in period. The bike has almost 200 km on it now. I’ve been riding it normally, but I’ve also done some pulls and accelerated hard a few times. I wanted to know if the DT175 really needs a strict break-in period or if regular riding with occasional pulls is fine during the first few hundred kilometers. Also, are air leaks a common issue on these bikes? I suspect mine might have one because the idle sometimes stays high even after I release the throttle. It can also hang around 2,500–3,000 RPM instead of settling down properly. Has anyone experienced something similar with their DT175? Is this a common issue, and what should I check first? Any advice would be appreciated. Thanks!

Thanks for the reply’s gents but I’m afraid I’m going to ask more questions haha.. I’ve got some main jets on the way as I think the problem is it’s not getting enough fuel, I changed it from the 210 that came on it to a 260 to match the 5dp39 buts it’s still too lean, I was going to just revert back to the original set up but it turns out I’ve lost the original 5j25 needle and they are like rocking horse shit, I can’t find one anywhere. So if that doesn’t work I’m on to a new carb. Taking onboard @calum suggestion I’ve been looking at the Dellorto VHST 28mm but wanting to stick with a MIKUNI I’ve also been looking at the Tm30. Now here comes the questions, Given the Tm28ss has slanted intakes will a carb like the ones mentioned fit okay as they have straight intakes? Is the tm30 a valid option? Is there a baseline/recommended setup with jets and needles for the VHST and TM30 for the Dtr ? You’ll have to bare with me this is the first bike where I’ve had to deal with carb issues and I’ve been thrown in at the deep end

Also don't forget to change bulb in light cluster for an led Kind regards