> I've had a set of SU's sitting in a box for a few years.
> The rubber diaphrams in the zenith's have developed some rips which is causing
> a great loss of power,
> While waiting for new diaphrams to come ; i was going to put the Su' on but I
> seem to be missing something.
>
> The SU's have two levers.
> The one toward the manifold controls the butterflies; but it is just loose
> with no spring unlike the strombergs.
> The front levers have springs; which i believe to be for the choke.
> I've got two connecting rods with the carbs; one of which has the control rod
> assemby; which i think should go to the levers without the springs.
> I just don't seem how this works without some sort of return spring.
> Of course none of the automotive parts place have the Hayne SU repair book; so
> I could see what I'am dealing with.
> Can anyone visualize what I'am talking about??
Al, I think everything is just as you describe (assuming these are HS6 carbs)
... so go down to the local auto parts house and buy a universal throttle return
spring, then add it to the linkage in a suitable fashion. Can't tell you
offhand where it was anchored, but I've seen the big spring on TR4As (which were
originally equipped with SU HS6 carbs).
Randall
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