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1980 gs850 jetting

  • Thread starter Thread starter stain
  • Start date Start date
Brought this one up from the archives....:p

Interesting reading. I'm trying to tune a 1980 850 and I just read the stage 3 dynojet instructions. Drilling the slide hole to 7/64" and 4.5 turns out on the "fuel mixture screw."

I have a bog in the 1/8 throttle range and roll ons with bog are a lean condition I assume. Today it did it badly for a while, then it died on me. Turns out I was low on gas. :rolleyes: Filipped onto reserve and I was back on track..
 
Problem was solved by changing the Emgo filters out for a set of K&N filters and rejetting to Dyno-jet specs.
 
Help with install kit

Help with install kit

I AM FIXING TO PUT A DYNO JET KIT IN MY SONS 650.WHAT IS THE DRILLS FOR.My kit did not come with some detailed instructions.i got the jet and needle part figured,but drilling and the big screw.i hhave the cv carbs its an 83 gs650.
 
put the kit in the 650.the small drill was for drilling the small hole in the bottom of the slide next to the needle.it was easy took needle off drilled hole out installed new needle.Then changed jet set air/fuel mix to 2.5 turns. put it on an walah runs great.
 
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