It sounds to me like the relay. So the starter motor button isn't wired directly to the starter motor as the starter motor requires a lot of current. Instead the wire is connected to the relay and the relay activates the starter. So I'd look in that general vicinity, sounds like it's starting to go faulty, which isn't bad considering it's age and the high amperage that it is subjected to.

I’m having the same problem, did you manage to find some ?

The DTX comes fitted with a 3MB. It's only the very early 89/88 models that came with the 3BN cylinders. Otherwise all years ran the same cylinder. Surprising there isn't more availability given how many of them were made etc

@Calum said: These were almost a nightmare to source 16 years ago, I can't imagine trying to source one now. My bike was stolen in 2010 and they smashed my headlight, the only one I could find at the time at one of the lugs snapped off. Looks like there is one for sale on eBay: https://www.ebay.co.uk/itm/117220896053?_skw=DT125re+headlight&itmmeta=01KTM8B5217RAZTYS7W99928FR&hash=item1b4ae8ed35:g:y7gAAeSwpAdqHbG7&itmprp=enc%3AAQALAAAA0GfYFPkwiKCW4ZNSs2u11xBZmLIU--K9J71U9lN1jJvKGElmcMKBjUzhn5JV3gvFr%2BI2mNwns0SlbUycS%2Bw9y3Qsk%2FC9Cp56dPrHcSEz%2FAr0Zq5el9BEEdpE--23lnRC8fU0%2Fsn13ryM871mf1jmM1dUjkmiSvaLNgJjb67pd3KfdVjuND8nPx720y4ajz9BPqgS8GUW%2FCNLpWF1MTDMkYcIXC7cHLcpOan7woIP1A2k2vjESEOPdlk4W2oy4yUcxyO%2BXWy347GqH%2BHrWnu%2F2Og%3D|tkp%3ABk9SR5bRrIjVZw Looks like there are some copies on eBay as well: https://www.ebay.co.uk/itm/188014865985?_skw=DT125re+headlight&itmmeta=01KTM8B521KCQCFP6HVFB9B97Z&hash=item2bc68f2e41:g:v4oAAeSwOt5pf0Q6&itmprp=enc%3AAQALAAAA8GfYFPkwiKCW4ZNSs2u11xBGAd3jIpQ1I%2FPeoct0WRAbZx%2BSpsbDaUmQIjZgqRPgUJo7nG5bGWKGBRZtJJ4k6kWqRTJdLi2QjCbWA%2FBE6jgcnSjbxqmpxc5alD7AkePHPryhwNx3wJMQx9Nn2c%2FJBb%2FaX0A7Z%2BlEzJ6pVoqrlh3sZUh2UZ%2BqkVZwe2vBfwA2F39HuV9O1D2z%2FSIMHbNWWFAOiiE%2BG%2F8xlRqkrAHFOwt3oKAIwYBpeHVG82hZBHdODyJwGkKG5Ef9gkphJk0fgSnlvoW%2FpV6wkCrHIDEqggbFJ3LfV5W5qwYpTWvJNjb1RA%3D%3D|tkp%3ABk9SR5bRrIjVZw Thanks for helping and sorry to hear about the theft/ damage. I had a different bike stolen around the same time period and wasn’t so fortunate with them burning it 2 doors down in a wheel barrow - I can only assume the chain & locks were giving them trouble. I purchased the unit from the first link as it’s stock and doesn’t look in too bad shape - I’ll hopefully be able to do some sort of refurb with the damaged unit I have right now and keep it as a spare now knowing their scarcity. Thank again! - one step closer to getting her back on the road.

I would say so. Is quite similar to the factory headlight, but it gives the modern look I was looking for, with a cleaner and whiter light.

@hotshot-iii hey, before assembly i adjusted the float height to 16-16.5mm according to the maintenance manual. I went through all ignition related cables and switches but nothing out of the ordinary. No corrosion etc... Also installed a genuine replacement coil and measured the primary and secondary winding just to be sure haha. The plug chop was done at 10k rpm. Did it a lot with mopeds to check if the main jetting was right. Today it was less hesitant to pull through so it went better when i just gave it full throttle from the go. This was after i finished the idle configuration with the screws. Steady +-1.6k rpm like the manual says and the air mixture screw is just about right. Temperature is very stable +-70 degrees celcius and its stay like that after driving almost an hour long. Im suspecting 2 things that are happening, correct me if im wrong haha. 1st thing is my powervalve that is opening a little bit to slow, i feel if they once open up, i can hear it and feel it and i can give them beans without any problem. Tohe other thing is maybe im running too rich in the lower rpms?

@BalnAndCantGetUp Update! The site was legit i was just overthinking it I fitted on my bike about a week ago and i did my first ride after 4 hole months yesterday. Needless to say it is a trustworthy site

@fishy-fish I'll put money it's that then.

Motul motocool expert (yellow) and Aisin coolant for motorcycles (blue) I prefer Motul because it's the best I tried,has the least fluctuations in the temp during usage.A little expensive 10 euros per liter.Normal riding city or cruising 65-75c temp,on the high side 87-90c when going up the mountain through steep bad fire roads. Second one is the Aisin,similar performance, normal riding city or cruising 65-79c and up to 95c on the fire roads.5L for 21 euros. All these on Greek hot summer evenings,34-38c. Currently filled with Aisin because I had 3 liters left and doing some work on the bike.

But what you're talking about is replacing the whole ignition system, flywheel, pick up, stator and CDI because you don't want to have your RE/X crank rebuilt. Which PJME do for £40 https://www.pjme.co.uk/acatalog/Yamaha-DT125R-DT125-R-Crank-Rebuild-4121.html#SID=1170 That doesn't make any sense

@HOTSHOT-III yes you are right 25 mm is for the top, the bottom damper Bolt requires 62 mm, i used a new Copper washer but not loctite since Yamaha manual does not mention it

@Waggstar What model & year bike do you have? There’s a DTX carb body for sale on fleabay for £50 (I think) if you have a dtr they can be year sensitive… Even if you have fucked up removing the air screw there are places out there that will drill out and rethread your original carb body for under £50. It depends what damage you’ve done to the threads. The brass screw can be removed even if you’ve destroyed the flathead screwdriver slot… It’s all comparative… I had a slot that stripped, I just drilled it 3mm deep with a 3mm drill bit and tapped a sharp cross head screwdriver into it. Heated it with a gas torch and it came out easy…

@yessir05 email them directly, they're pretty helpful https://www.zeeltronic.com/page/contact.php

@spookdog here new video.. https://streamable.com/iebafj

@ninja Yeah the bottom. Yoke may differ as fhe head light brackets fasten to the yoke. I am sure it will fit, but you may find you have problems mounting the head light.

@Darty The previous owner of my bike put 120 front, 130 rear -70-17s on and I’ve pretty much hit the edge of the rear. Is the 140 rosso 2 much harder?

@LaNoire pretty sure the swingarm is from a 1991. The 89’s I don’t think carry the same 3SP stamp on them but still use the same hardware. Although I think the chain slider is a slightly different design as the 89 has square edges