CIS mixture screw

[BBShriver]

Ok, I've been reading all the CIS adjustment threads, and I'm fairly familiar with adjsuting carburettors etc, and have the long allen wrench needed, but I can't find the mixture screw, or any diagram on the web showing where it is. Maybe i've just overlooked it, but does anyone have a picture showing the location?

Thanks,

[dweymer]

it is down in a hole between the fuel distributor and the sensor plate boot.

See the black boot on top of the cis? Go just to the right of that, down on the metal base is where the hole is, it may have a plastic cap on it.

[Sunroof]

It is indeed a tiny hole!! You might need a flashlight and you might have to move it about getting it in-between the fuel lines coming off the fuel distributor. The adjustment T-handle wrench I bought was an inch or two too long because the area above the fuel distributor was not very high. I cut off an inch or two. The adjustment tool goes in a few inches and nests into the sensor plate height adjustment hex fitting. The hex fitting will turn ONE CLICK AT A TIME. The rule: Right (clockwise) rich, left (counterclockwise) lean.

Here is something to consider. I had a tough time getting the adjustment tool into the hex fitting during my first attempted adjustment. The previous owner added a drop of blue-locktite into the hole and filled in the hex nut!!!! I wound up using dental picks to get the junk out. When I adjust my mixture now, I remove the air filter cover place my hand inside the airbox to find the round sensor plate, support it with one hand and adjust the mixture click by click with the other. This allows me to not bear down so hard on the hex fitting, check the seal of the sensor plate in the down and resting position and also clean around the plate (up position).

Hope all this helps

Bob
73.5T

[1982911SCTarga]

The hex fitting will turn ONE CLICK AT A TIME.

If you ever get inside the mixture adjustment assembly, you will see that there is no means for a click-type detent with the adjustment screw. It just rotates clockwise or anti-clockwise (is that a British term?).

Brian