There is an internal spring.  That's what you are compressing a bit when you
do however many turns in you decide to do!

Stuart

Wes Wrote:

Something I've remained confused about despite years of seeing threads on
this adjustment issue is this:
When you adjust the lifters to some number of turns in, how do you know the
lifters were already pumped to their full length before you did the
adjustment?  Isn't the whole point of the lifters (assuming they work as
they were intended) that they can pump up to a partial length?  It almost
seems to me that you would have to adjust them way out, run the engine to
pump them up, and then adjust them in.   Why isn't that necessary?

Thanks for any insights!!
Wes