There are a shop manual (directions for repair & servicing) and a parts manual with exploded diagrams and parts numbers, both of which I've found very useful, also an operator's manual which describes the controls. The Perkins engine in mine is covered by a separate Perkins manual. Although the muskegs didn't evolve very fast, it'd be nice to have the manuals for the specific year of your machine.
These are the original Bombardier manuals, still available from Prinoth