[TR] ZS XD 175 carbs needle adjustment

[Jeff Scarbrough]

On Thu, Sep 20, 2018 at 9:50 PM <davgil at aol.com> wrote:
>
> Good morning,
> My 1976 TR6 is running rich on the front cylinders based on the color of the plugs.  I was attempting to adjust the needle using a carb adjustment tool that locks the upper part and passes the wrench through to the adjustment.  The wrench will seat in the adjuster, but will not move either way.  I did not think that these had locking screws to prevent any change.  I was reluctant to force the needle and wanted to see if there is something I am missing here.

I have a 1976 Spitfire with the same problem.  Right now I'm just
soaking it in various let-go solutions.  Hoping I don't have to get
too aggressive...  I think I'd swap the piston out before I start
drilling, to buy myself some time.  That's why you can't have just one
LBC.

Jeff Scarbrough
Corrosion Acres, Ga.