Lubricating and adjusting carburettor rod linkages
Most older Cars with carburettors have rod linkages these have a ball-jointed head attached to the throttle valve lever, which threads on to the linkage rod to the accelerator pedal.
You may need to adjust the length to give the correct throttle opening. Here are the types and how to adjust.
How the ball-joint is secured varies:
To remove the rod from the throttle lever, slide the tubular clip off the end of the rod.
Pull the rod off the ball fixed to the lever.
Screw the head clockwise to shorten and anticlockwise to lengthen it.
Put a smear of grease round the ball, push the rod head on to the ball and refit the tubular clip.
Lift the two clips on the strap round the ball head. Slide the strap off the ball head and pull the head off the lever.
Loosen the lock-nut on the linkage rod and screw the ball head up or down to adjust it.
Spring-loaded sleeve To re-move a spring-loaded sleeve, lift it against the spring pressure and pull it off.
Lubricate the ball with grease to ensure it moves freely, and press the head back in position.
A spring clip may secure the ball on the throttle lever to an eye on the end of the linkage rod. Pull off the clip and slide the ball out of the eye.
Screw the eye up or down the linkage rod to increase or reduce the length. Grease the ball head and reassemble.
On some carburettors, a cranked lever is fitted to the throttle spindle.The linkage rod is held to the lever with a locating clip.
No adjustment is possible, but check that the clip is not cracked, and that it grips the rod and fits properly into the cranked carburettor lever. Lubricate all pivot points on the linkage.