Rotax produce the 912 (80hp), 912S (100hp), 914 (100hp continuous, 115hp peak) also 912is and now the915is (140hp) engines
Factory Instructions see CBM either 912 or 914.
Hints and tips from Lockwood engineering 912 Parts 1-2 and 912 Parts 3-4.
Oil Tank Bracket
Rotax-Owner.com is the place to obtain a copyof the appropriate Rotax installation manual and Illustrated Parts catalog (They are too big to load on our site). The illustrated parts catalog can be a great help in understanding what you are doing.
Service Bulletins, etc
Rotax Mods (see the bottom of the page)