That is not the stock throttle cable. Here are two pictures of it.
The end with the long spring is the carburetor end. Inside of the spring there is a steel tube that goes over the cable and under the spring.
It is about the size of a fuel line. About 3/8" outside diameter. Mechanics tend to bend it up during installation and as a result the cable within gets pinched and causes the throttle to hang up.
When you run the 4x Weber 48ida carb installation the space left for the throttle cable under the distributor and the #5 cylinder intake runner, is too little for a rigid throttle cable at that point.
If you disassemble the spring end of the cable by removing the hex nut threaded on, the spring and spring retainer will slip off and the tube will be exposed.
At that point you can completely remove the steel tube with a tubing cutter, hacksaw or carborundum disc and reassemble it.
Then the cable will not bind inside of a kinked steel tube.
What you are showing me is NOT the original throttle cable assembly, that I know of. It may have been altered the way I described but the cable mounted return spring and its retainer were not reinstalled.
I'm not sure if what I have is what Wilkinson calls the type 3 throttle cable? The picture he is showing definitely does not have the internal steel tube under the spring.
I'm thinking that yours may be type 1, without any spring. What I HAD was a type 2 with the tube and the spring. What I have now is essentially the type 3 without the tube but with the spring?
Maybe Bosswrench would know about this? Ask him.
In any event, you need to disconnect the cable from the carb and operate it without it being attached to the carb.
If it operates freely at that point then the issue is not the cable but the carburetor itself. Carb throttles are known to foul and cause the throttle to hang up.
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