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

Hello! Enjoying the bike alot! Installed adjustable levers, changed motor oil, bike works great! But what I’ve noticed, the days it is hotter (above 30c). The temperature starts climbing quick when standing at red lights(3-4 minutes of sitting at one place), if I drive its okay, needle sits just under half. I have mostly city driving, how do you guys battle this issue, possible to install a fan or a coolant sevice should help enough?

@Calum said: You can measure the coil to see if it's within tolerance, what I was finding was that from cold it would work a treat, but once under load and warmed up, it would fail to fire above 4k RPM. Okay good to know. So even my measurements looks okay to me I thought about that it might not be okay under load anymore. But I didn't want to manipulate any plugs just to measure under load. @Calum said: I've had this before with a faulty ignition coil. These can still be bought brand new from Yamaha and I highly recommend going for genuine coil over an aftermarket one. The aftermarket one I had led me on a wild goose chase trying to figure out the intermittent faul Do you have any link or shop? Thanks

What specifically do you mean by cut? The Tachometer is mechanically driven on the DTR. So you need to replace the tachmeter cable back into the gearbox and the clocks. If you mean the lights etc, then there are many wiring diagrams already uploaded to this forum. Workshop manual is pinned: https://training.dt125r.co.uk/files/Yamaha_DT125_Workshop_Manual.pdf [image: 52172141696_84e3b69382_b.jpg]

It sems to have potential, even if I still have a bad carb, and PV and ignition are just based on butt dyno. Riding with a friend today I realized how slow his bike seemed, he was keeping up fairly well before, but now I felt like I was puttering around for him to keep up I have had a creeping feeling that maybe the reeds were damaged, and not the carb, so I pulled them out and checked them today, but they were fine. (VF4 clone for CR125 with DIY Polini 0.35mm petals). Can't wait to try another carb on it, feels like I have done a million mods and adjustments on that POS carb by now.. I was not so familiar with the PWK's before, but by now I know them in and out BTW, temp was perfect during the ride.

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