How do I fix the steering on my craftsman riding mower for model number 917.270514?

Question:I cannot find my owners manual so I am having some difficulty

Answers:
Go to the Sears Parts website below, enter your model number, look at the steering system diagram to figure out which parts you need. Once you do that, order the parts and replace them on your tractor once they show up.

Not much other advise can be given since you did not describe your problem in any detail.
Cheers...