My latest carb restoration project

  • gd4now
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Re: My latest carb restoration project

23 Oct 2021 14:48
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From the info posted in this thread it would appear to be a 77 B or a 78 A as they both appear to have the same internals, but as I have said before what do I know.
1977 KZ650 B1
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  • hardrockminer
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Re: My latest carb restoration project

23 Oct 2021 18:25
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There were three models that used the 5DL31 needle.  One was 1976, but it had fuel/air screws so it's not 76.  That leaves 77B and 78A as possible choices.  77 used an O6 needle jet and 78 used an O5.  If you pop a needle jet out you will know for sure which year.
I have several restored bikes along with a 2006 Goldwing with a sidecar. My wife has a 2019 Suzuki DR 650 for on and off road.

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