Grohe Axor 35115801 Installation Instructions Manual page 4

Install the cup washers and springs in the
rough. Install the cartridge assembly.
Push the handle over the cartridge stem.
Tighten the handle screw with a  mm Allen
wrench.
If you are installing 35115801,
turn to page 5.
If you are installing 35116801,
turn to page 9.
4