Hi and welcome to FixYa. I am Kelly.
For parts go to this link: http://www.partsandservice.com/html/TroyBilt/cs/cs47279-4727901.html

For the Opertors manual call Troy-Bilt at 1-800-833-6990
For Parts 1-800-648-6776

This is the manual for the unit just below the 47279 i.e for the 47276 and will be close but NOT exact for your model.
http://www.brentchalmers.com/Literature/472655-447267and47276_OwnersManual.pdf

Letters:
Troy-Bilt Mfg Company
c/o Technical Service Dept
102nd St. and 9th Ave
Troy, NY 12180

Just note that this is historical information. Troy-Bilt was purchased by MTD in 2003.

Thanks for choosing FixYa,
Kelly