What do you want to know? The operators manual and the parts list for the engine are available to download from the Briggs & Stratton Website, the overhaul manual for the transmission is available to buy (ebay or Amazon), and the operator's manual for the mower itself should be with the mower. That's all the publications that exist.
phil_saunders(a)bigfoot.com
Phil Saunders, January 2011