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I would not use that stator unless you have the matching flywheel which it sounds like you do.  You should be able to see where the 77 stator was set in the slots by the marks from the screws... should be near center of slots.  Bolt it there and then I'd set the timing correctly.

If you decide to use the 77, you absolutely must use a voltage regulator in the headlight circuit.

You'd connect the single green out of 77 stator to both greens on 75 bike.  Black/white is the points wire, same as your black now. Yellow to yellow.   Sky blue obviously isn't needed.

 

These have been discussed quite a bit on this and other Yamaha forums, but until now, we did not have anyone who could attest to the product, it's quality, or it's ease of use. That appears to be old news

A friend of mine decided it was what was needed to get a DT400 with a bad pulsar going. So a about 4 days and a smidge over $200 and the product was in his hands. He invited me down to take a look. Mind you this is installment one, as the bike is not completely running yet, but that will be documented as soon as it does (which we are confident it will.)

First, what's in the box:



What you see is what you get.

• CNC Stator Backing Plate
• New sealed CDI control box
• Five assorted screws
• 4 aluminum spacers

That's it.

Next - remove your flywheel and stator, and remove the existing CDI box. Then you will be moving the source coil and lighting coils from the old stator to the new (good instructions with pictures included). You will end up with this:



Your old stator plate and pulsar are not reused. The new setup comes with one rubber tri-plug that plugs into the old harness. Where the other one comes off of the stator, it will only use two wires of the 4 and plugs into matching color wires off of the CDI box. The CDI box is virtually the same dimensions and fits perfectly into the old CDI perch on the bike:



Then you bolt the stator to the bike, and do an initial timing set of 4mm on one side of the mounting screw. That is close enough to get the bike to start after which you can use a timing light to set it perfectly. More on that when we come back for a running bike post.




The bike after a 45 minute job of moving things over, mounting them up and such, gave a good, fat spark when kicked over. This bike is not quite ready to run, so the final verdict is not in. The bottom line at this point is that the system seems like a great solution to the bad CDI setup we are so familiar with. Easy of installation is a second plus. And the cost is less than either a pulsar or a cdi box - assuming you could find one.! You will still have all stock lighting, so no battery fit issues, or bulb changes. (You won't get the great 12 volt benefits of the PowerDynamo system, but then if you bike is not running lights, or you are fine with the 6 volt stuff, this is a lot less money!)

We will be following this up with a running bike evaluation, but for now, the verdict is a Winner!

Link to the product page is: www.rexs-speedshop.com/epages/es143131.s...43131/Products/RMK-1