Contents: Needle valve ↳ Throttle control ↳
Needle valve
Since May 1983 (manufacture date code "DL") a new type of needle valve controlling the fuel supply to the float chamber and a new needle valve clamp have been introduced.
In case of repeated engine stops immediately after starting it, remove the carburetor cover and, if there is no fuel in the float chamber, proceed as follows.
1. Remove the float shaft and the needle valve clamp (if present on this type), taking care that both elements do not fall inside the float chamber.
2. Remove the needle valve (cannot be reinstalled).
Caution! Do not unscrew the bolts securing the fuel metering elements to facilitate access to the float.
3. Install the new needle valve and new clip, making sure the clip is correctly positioned in the groove provided for it in the valve.
4. Insert the float, paying attention to the correct position of the spacer gasket between the lever holder and the needle valve, and insert the axle into the cutout of the float holder.
5. Move the float several times, checking whether it can rotate freely on the axis.
6. Install a new float chamber cover gasket and tighten the carburetor cover mounting bolts to 2.5 Nm.
Attention! Carburetors with variable throat cross-section were not equipped with a needle valve mounting clamp in the initial period of production.
Throttle control
Ford Carburetor Throttle Lever
A – throttle lever,
B – a rod made of artificial material
Since January 1985 (manufacturing date code "FJ"), the throttle lever (A) and the plastic rod (B) have been changed. If the old type throttle control mechanism fails to operate due to wear of the plastic rod (B), a new type lever and rod should be installed.
Attention! There are two types of throttle levers - with a straight or curved cutout for the rod. It is necessary to use a lever with a cutout of the same shape as in the factory configuration.