tleppanen

Take time reading the schematic. All you really need to connect for the bike to start is the cdi, stator, ignition coil, and all the grounds. I would suggest to also connect the on/off switch, ignition lock, and the stand sensor to make sure none of these prevent the spark. A disconnected stand sensor had me puzzled for a while as the bike would turn off when i put the gear on:)

Hi, My DT 125r just recetly lost its spark. The electrics on it are from a tzr 2rh and i figured the problem might be in the stator since i just recently machined it to be able to adjust the ignition timing. Anyways, i just took the resistance readings from the stator and got: yellow and brown = 35 ohms black and blackred = 723 ohms whitegreen and whitered = 349 ohms all the white wires from the threeway connector = 0,3 ohm I cant seem to find the working resistance readings from anywhere... Does anyone know these or have experience? Thank you for help

Nice project looking to see more

Thanks on the heads up... Looks like I won't order the stator yet.

I have basically the same problem. I'm quite sure it's electrical, but based on this thread i figured it could maybe be something else... (the thread: ) Looking forward to seeing what could cause this... Almost ordered a new stator today but after seeing this thread started to reconsider

Okey... I took apart the magneto from the DT. It was different than the TZR magneto I also noticed that on the DT stator, two of the three coils were hand made Im guessing this could be the problem but it did work fine before redoing the electrics. Anyway, I cleaned everything in the magneto and put it back together. Then, I tried to start the bike... The kickstart was jammed and the tire would not rotate even when trying to start downhill Could rotating the flywheel somehow have jammed the engine somewhere? Doesn't seem likely but haven't worked with bikes too much so u never know...

I have a broken down tzr 125 (year roughly 1990). Im thinking of taking the magneto from this and putting it on the dt... Does anyone know if they have the same magneto? And what size flywheel remover is required to remove the flywheel?

Checking and sanding the grounds made no difference... The ignition switch was used, but seems to work fine. When power is switched off, it is off, and when on, it is on. The blinkers do not work since the front blinkers themselves are broken... have yet to buy new ones. I dont think the rear blinkers should work if the front ones are not hooked ? The bike may take a bit over 4500 rpm in neutral (based on the sound since the tachometer doesn's work, forgot to mention that) This bike doesn't have the green/black wire behind the speedo so im guessing this model doesn't have that restriction. And im not sure it would make a difference since doesn't that restrict the ypvs and its not in use right now

Yea I did set up an intro after i was told to... Anyway, I bought the bike for the winter about a month ago. It had been in constant use and had been working... i guess. It was rebuilt about 3500 km ago, so the gearbox and clutch should be in good condition. The only thing that does not work in the bike excluding the ignition is the brakes(the brake disks are bad) and the blinkers I cleaned the carb with no result... as i suspected as it was clean and the jets were not clogged. However, i did take the cylinder and piston from a broken down tzr as the old one had no compression... Worked fine with the tzr cylinder. After putting in a ignition lock? (the key slot) the lights stopped working as all the wiring was in horrendous condition (MANY wires were cut and some were replaced by scary and random white wiring ) The wiring was taken out and all the wires were checked with the diagram. Bad ones were replaced but most of the old wires were kept in use. At least the lights worked now and made sure the ypvs wiring was fine since it had not been in use. The bike worked fine for about 1km but then started chopping the ignition... Was certain it was the spark plug but turned out not to be (nor the ignition coil) This is where i am at now, and don't know what to do next...

Nobody knows what might be wrong with my bike? It definitely seems like its something in the ignition so i dont see how it could be in the clutch... And what is the bidirectional ruban?

Recently joined the forum because i bought a dt 125r and figured i might need some help at some point... Actually have one question already Anyways, hi all

Ok...

Is this somewhere in the magneto?

Where is this located? Seems like it would be an easy fix And where are these located?

Just recently after redoing the wire harness on my DT the ignition started having problems. The bike starts just fine, and revs normally up to about 4500 revs, until the ignition starts to cut. Will only go about 50kmh now since doesnt allow high revs. I changed the spark plug with no result, and also the ignition coil. Cleaning the carburator had no result either so I am thinking that t´he magneto is not working right. Does anyone know what this problem might be since i dont have much experience with the electrics of motorcycles? If the problem is the magneto, is this a hard job to fix and about how costly?