Mazda 2012 MX-5 Owner's Manual page 363

Maintenance and Care
Owner Maintenance
3. Remove the metal stiffeners from each
blade rubber and install them in the
new blade.
CAUTION
Ø Don't bend or discard the
stiffeners. You need to use them
again.
Ø If the metal stiffeners are
switched, the blade's wiping
efficiency could be reduced.
So don't use the driver's side metal
stiffeners on the passenger's side,
or vice versa.
Ø Be sure to reinstall the metal
stiffeners in the new blade rubber
so that the curve is the same as it
was in the old blade rubber.
8-26
4. Carefully insert the new blade rubber.
Then install the blade assembly in the
reverse order of removal.
NOTE
Install the blade so that the tabs are toward the
bottom of the wiper arm.