> Chris- Glad you found it. Also, since it's such a common problem, glad you
> posted it! Could you clarify a few things for me?
Sure.
>
.... although the lever felt good and tight going on to the
> shaft, once home, it could rock back and forth <snip>
>
> as in rotating on the shaft?
Exactly.
> << enough to make setting the idle impossible! Staking the lever around the
> hole, then filing it to fit the shaft seemed to work fine <snip>
>
> Staking? what's that? filing what?
Basically, remove the lever from the shaft. At that point you'll see
that the shaft has been milled flat on 2 sides to engage a
rectangular slot in the lever. This rectangular slot wears over time.
Put the lever on an "anvil" of some sort like a big bench vice, use a
flat punch around the rectangular slot. By giving it a few good
whacks (Not too hard) you can "close up" the wear in the lever.
Unfortunately, the slot is no longer the correct shape to fit over the
shaft. Use a file to reshape the slot to fit.
> Would it make sense to file a flat on the throttle shaft, and then drill and
> tap a hole in the lever for a set screw to bear against the flat spot? or
> simply drill a hole for a small pin through the whole assembly?
...there's already a flat on both sides of the throttle shaft but
the lever is too thin for a set screw or a pin... I considered this.
On a TR4A HS6 carb, the lever is a simple steel stamping about .125"
thick. By the time you drilled it on edge you could only put an .080"
(or so) pin in it....I think the TR3-4 H6's have a better
arrangement...
... I'd also consider silver soldering the whole thing together after
assembly...
...the above tip would apply to Spit's -- both single and twin carb!
I think I just figured out why my Spit never idled with a
rebuilt carb either!
Hope this helps!
Christopher M.Lillja
Marketing Associate
Princeton University Press
Tel:609 258 4900
Fax:609 258 6305
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