Saab 9-7x Owner's Manual page 312

A. Blade Assembly
B. Arm Assembly
C. Locking Tab
2. Press down on the blade assembly pivot locking
tab. Pull down on the blade assembly to release it
from the wiper arm hook.
3. Remove the insert from the blade assembly.
The insert has two notches at one end that are
locked by the bottom claws of the blade assembly.
At the notched end, pull the insert from the
blade assembly.
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D. Blade Pivot
E. Hook Slot
F. Arm Hook
4. To install the new wiper insert, slide the insert (D),
notched end last, into the end with two blade
claws (A). Slide the insert all the way through the
blade claws at the opposite end (B). The plastic
caps (C) will be forced off as the insert is fully
inserted.
5. Be sure that the notches are locked by the bottom
claws. Make sure that all other claws are properly
locked on both sides of the insert slots.