While you wait for answers, we may have found some information which could help you.
Click here for Riding Mower Model
Sears 30" rear engine rider won't turn off with the starter key?
How do I set the float level in my carb?
Screaming tiller?
What is the problem with my Sears Garden Tractor?
Problems starting Lawn tractor (Sears Craftman)?
Sears 151/2 46" automatic drive 917.256552?