Rotax Serial Number location

[Simonnash41@aol.com]

Hi everyone,
 I have just received a Rotax service bulleten from Skydrive.  My engine 
(914) is still sitting in it's crate in the lounge (doubles as a coffee 
table).  Can anyone advise where the serial number is located on the engine 
so I can check if the bulleten applies.

Regards
Simon (builder 495)