I don't know about 3624 specifically, but under its other number of 3627
the set's instructions were a series of photos on the reverse side of the
pack header card:
The submitter did not use a picture. Does anyone have this manual or can someone
confirm that there is indeed no manual to this set?
I found an image in an old Catawiki auction that shows the instructions are printed
on the box. Unfortunatly I can't remove the instructions entry because there
is at least one item for sale listed under it (in a closed store).