Instructions in PDF format for the following sets can now be downloaded from Playmobil.com. They can't be linked to individually, so go to the Building Instructions page and type in the four-digit number of the set you're looking for, click "Show files", then "Download". You can also search by title or partial title in English or German.
Official Building Instructions Page
The links below go to the regular inventory pages. If you see the set listed here, you will find it at the official page.
Site maintained by Heather Patey and contributed to by fans all over the world.
Disclaimer: This is not an official PLAYMOBIL site, to wit:
This web site is not owned, operated, sponsored or authorized by geobra Brandstätter GmbH & Co. KG. geobra Brandstätter GmbH & Co. KG does not endorse, and is not responsible for, this web site or any information or links contained herein; makes no express or implied warranties with regard to any information or links on this web site or any other linked web sites; and is not bound by any statements made on this web site, or by those who own or operate this web site. The trademarks PLAYMOBIL®, PLAYMOBIL® SYSTEM X, PLAYMOBIL® RC TRAIN and PLAYMOBIL® FUNPARK and the copyrighted images of PLAYMOBIL® products are the sole and exclusive property of geobra Brandstätter GmbH & Co. KG, which reserves all rights therein.