Should be a locking screw on the side of the piston. Take suction done off
pull out piston and loosen screw for adjusting needle. Put piston back in and
dome on then can adjust. Jim Henningsen
Sent from my iPhone
> On Sep 21, 2018, at 11:09 AM, Jeff Scarbrough <fishplate@gmail.com> wrote:
>
>> On Thu, Sep 20, 2018 at 9:50 PM <davgil@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.
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