Mitsubishi Electric Lancer Evolution-VII Workshop Manual page 612

Riveter
Bumper face
Bumper side
plate
Bumper face
1
Rivet
2
3
Flange part
4
Rivet
Vehicle
centre
: Bolt installation position
EXTERIOR -
"BA RIVET INSTALLATION
Use the recommended tool shown in the illustration to secure
the rivet in the following procedure.
1. Insert the rivet into the main materials (front bumper face
and front bumper side plate.)
2. Insert the recommended tool into Part A of the rivet.
3. Maneuver the handle of the tool pressing the flange of
the rivet.
4. Particles of Part A of the rivet are cut off to be secured.
Part A
Riveter
AC" FRONT BUMPER CENTER NET REMOVAL
Tighten the front bumper center net mounting bolt from the
vehicle centre line.
Front Bumper
51-5