Mount the matching machine adapter with sealing tape on your machine by hand.
Use a ring spanner or open-end spanner to tighten the adapter well.
Now connect the first Hirt-Line basic element to the machine adapter.
Screw the union nut of the first basic element to the machine adapter. You do not need sealing tape for this
Now use two open-ended spanners to tighten all the elements as much as you need, the tighter the more stable the hose remains in the desired position.
The hose should now be successfully fitted.