Nacra 500 MK2 Assembly Manual page 41

3.
Make sure the rubber rod length (from tiller crossbar end
to tiller arm end) is the same on both sides.
4.
Check the alignment measurements from step 1. Adjust
if needed.
5.
Pre-drill through the holes in the tillerbar of the detached
Phillips head screws with the 3mm drill.
6.
Screw in the Philips head screws back into place.
41.