Mikuni VM20 with 70cc Kit on Sachs 504

I got the mikuni VM20 carb for my 70cc kit on my Sachs 504. I mostly need tuning advice. Right now I'm running a 160 jet. And my screws and needle are at random positions. Anyone know a tune that works?

Re: Mikuni VM20 with 70cc Kit on Sachs 504

The tune that works is the one that allows you bike to run well with out seizure

Re: Mikuni VM20 with 70cc Kit on Sachs 504

I had this nightmare scenario.... and I dialed it in.

And I didn't write it down ... and sold it.

But.. i remember running rich for a while just to make sure it didn't seize.... and having to buy tons of jets.

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