Macerator location on 01 sailfish 282

The Grady White Owners manual can be an amazing source for this kind of information. Download from GW site.

Typically they are Groco units installed inside the holding tank.
 
Hey John, Did you ever get to your macerator? I have a 2001 Sailfish and just replaced the macerator. If you still have questions, id be happy to share my experience. - Coop
 
Under the mid birth. Remove the cover. Locate the holding tank. It's the black soup sized motor. Can't miss it.