Instructions for the KS018 F locomotive kit.  You’ll need to create an account to download the 40 odd pages of fully illustrated instructions, but download is otherwise free.

This kit is for the post-1880 locomotives built by Dubs and others (Neilson, Stephenson and Vulcan).

For the earlier short frame locomotives built by  Avonside, Nielson, Vulcan and Yorkshire see KS017.