Hatsan Massive a

how are you trying to fill it ? compressor, hand pump or bottle ?
if completely empty......
to seat the valve/poppet, you must "shock charge" it with a blast of air from a bottle.
just a thought, good luck !
Bottle
how are you trying to fill it ? compressor, hand pump or bottle/tank ?
if completely empty......
to seat the valve/poppet, you must "shock charge" it with a blast of air from a 4500 psi tank.
just a thought, good luck !
bottle
 
you might have a piece of lead in the transfer port that held the valve open when you cleared the jam.
another guess.....good luck
Bottle

bott
Bottle

bottle
i tried to

how are you trying to fill it ? compressor, hand pump or bottle/tank ?
if completely empty......
to seat the valve/poppet, you must "shock charge" it with a blast of air from a 4500 psi tank.
just a thought, good luck !
I tried to shock charge it . No luck .
 
Make sure you post what you find fixes the problem so if others have a similar problem they can try the same thing.

I too am thinking that the problem is the poppet/valve seat and that maybe some shaved leaf is keeping the poppet from sealing to the valve seat.
 
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