yamahahaha wrote: Not to hijack your thread but does the donor DT250 have to have the EXACT setup that came with it ( Stator / Flywheel /Coil ) in order to work on the DT400 ???
You need a points stator and points flywheel set from the DT250. Ignition coil might have different specs but CDI coil seems to work fine with points in my experience. Yamaha points magneto design is sometimes called a "mechanical CDI".
I bought a timing light and cranked over the bike. I used a drill connected to the flywheel with the outer of my flywheel puller.
I found that the timing mark was showing the pulsar blade need to rotate about a 1/8th turn counterclockwise to match with the timing mark on the flywheel.
This was much more than the adjustments on the pulsar or the stator backing plate would allow. I drilled a few new holes in the plate to allow for the rotation needed.
A few days later a friend of mine called and said he had a Rex's Shop shop stator kit for a 74 DT250 that I could try if I wanted.
Would a Rex's Shop shop stator kit for a 74 DT250 work?
I'm near the end of my patience with this bike and am tempted to go a different direction if I can't get it going soon.
Thanks again for everyone's help on this one.
If he has everything needed to get spark on a DT250, it will fit your 400.
I hooked up the Rex's Shop shop stator kit last night and I have spark! It also doesn't kick back now. It doesn't want to fire over though, so I'm not over the bridge quite yet.
I'm thinking of starting by pulling apart the carb and installing the jetting that was in it previously instead of the jets that came with the rebuild kit. Is that a good place to start? What else am I missing here?
How did you set the timing on the Rex kit? Pictures of what it looks like?
Ok I'll hopefully get time to reinstall all the original jets tonight.
The kit has no adjustment for timing and touts that it is bolt on and go.
I'll take photos tonight. I have also reached out to Rex's to verify fitment on a DT400 vs the DT250 the kit was originally for.
how did the rwx thing work out?????