Here is the information I got at my dealer this afternoon::
MOVING CONVERTIBLE-TOP TO SERVICE POSITION:
1. Remove left and right wind deflector inserts from the roll over bar.
2. Open the convertible top until a dimension of approximately 100 mm is achieved between the windshield frame and the front convertible top bow.
3. Reach through the opening in the roll-over bar and unclip the tension ropes from the guides on both sides.
4. Open the convertible top until a dimension of approximately 470 mm is achieved between the windshield frame and the front convertible top bow.
5. With the rear lid open, grab the rear tension bow from the outside and pull upwards.
6. Loosen retaining strap from the mounting on the rear tension bow.
7. Pull Retaining strap over the convertible top covering to the left convertible-top tip and attach.
ENDING CONVERTIBLE-TOP SERVICE POSITION:
1. Disengage retaining strap and clip into the catches on the tension bow.
2. Fold tension bow back out of the service position and into the original position.
3. Reach through the opening in the roll-over bar and clip the tension ropes into the guides on both sides.
4. Close convertible top and install wind deflector inserts.
I know photographs would make this whole exercise easier, but the photographs I got with the opening procedure are difficult enough to see in the original document and when scanned...... At least the procedure doesn't take a PIWIS to accomplish.
The technicians didn't have the time (or experience - haven't been to school yet!) to demonstrate how to find the engine. Maybe next time.
Bill