The First Years My Expression Instruction Manual page 4

rim
IMPORTANT: When inserting valve, run your
finger around the rim to seal edges. Avoid pulling
or pushing on middle of valve.
1) Assemble valve. After cleaning, re-insert
valve into bottom of pump body until it's
flush against stop. Be sure to push valve all
the way on until it can't go any further.
3) Drop silicone cup into pump body.
5) Align arrow on pump rim with arrow on cap.
Rotate until arrows no longer align.
ASSEMBLY
2) Screw bottle onto pump
4) Press silicone cup down on pump rim. Be sure
silicone cup is seated on the rim all the way
around.