I need a service manual for a troybilt model 13AT609G766.thank you

Hi,
The parts manual is at:
http://www.mymowerparts.com/pdf/MTD%...3AT609G766.pdf
And the service manual for lawn tractors is at:
http://www.mymowerparts.com/pdf/MTD_Service_Repair_Manuals/770-10579%20%20THE%20MUST%20HAVE%20MANUAL%20OF%20OUTDO OR%20POWER%20EQUIPMENT%20BOOK%202%20REAR%20ENGINE% 20RIDERS%20AND%20LAWN%20TRACTORS.pdf

And is quite large, so patience may be called for depending on your connection speed and the server's load at the time.
Peace,
Clarke