I've found that shoving the pump head *all the way down* onto the valve stem 
works best with all-in-one systems. Shove it all the way on, flip the lever, 
and it should work.  

--Eric N
Sent from the iPad 2

On Jul 19, 2011, at 2:25 PM, rperks <perks....@gmail.com> wrote:

> Any of you out there buy into the Zefal HPX with the ASV (auto head
> system)?  I hve a few older HPX pumps in the garage and go back and
> forth with my mini pumps.  The new head system on these has me a bit
> confused, things this simple should not make me feel so dumb.  The
> "instructions" on the box can be seen here:
> http://flic.kr/p/a5fp98
> even with these in 4 languages I can not get air to easily go into a
> presta valve with the lever latched onto the stem.  I have tried
> pulling out the little metal widget, flipping the inner gasket etc. to
> no avail.
> 
> Any body else figure these out?
> 
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