There are two types of manuals for Merlin Bottom-Bracket guards.
The first is the standard Merlin Bottom Bracket Guide which covers all bikes from 1991 and later.

The second manual is the Merlin Bottom-Bracket (non-Grease Guard) Manual for 1990 models and earlier.

Both manuals are in .pdf format which you can open in Adobe Acrobat and print. If you do not have the Adobe Acrobat plug-in, click below to download it from Adobe's website.