AYP, who make Husqvarna equipment, made the Craftsman 917.28990 (a sweet unit if you can get a good price).
MTD
1997
2006
A person can get an owner's manual for a Craftsman lawn tractor by contacting the Craftsman company. The phone for customer service is 1-888-331-4569.
Try searspartsdirect.com
Gates
Unfortunately the model number you gave it not listed any where. It looks like a serial number. The Craftsman tractor model numbers are like this example :- "CRCRA17542"
Managemyhome.com with your model number
Made by the AYP division of Husqvarna Outdoor Products
Husqvarna
Go to the sears web site and enter you model number they have PDf's for these.
1997