This is how you do it, hydraulic valvelifters don't have a valvelash
Copied from the manual:
a . Initial Adjustment of Hydraulic Valv~
The initial adjustment of any hydraulic
valve lifter must be made only when the lifter
is on the camshaft base circle (off the cam) .
1. Crank engine over slowl y until distributor
rotor indicates that affected cylinder is in fir-
ing position, which places both lifters of this
cylinder on the camshaft base circle (off the
cam) , so that either lifter may be adjusted.
2. Turn adjusting ball stud as required