Mercedes-Benz SL 320 Operator's Manual page 129

7. Place soft top frame (5) onto
windshield header.
8. Place soft top bow (4) in its
vertical position.
9. Pivot sun visors to side.
Remove left and right caps (6).
10. Using Allen-head wrench, lock left
and right of soft top frame (5) to
windshield header - turn wrench in
3 stages towards center of car:
1. Left lock to first notch
2. Right lock to second notch
3. Left lock to second notch.
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