While you wait for answers, we may have found some information which could help you.
Click here for Riding Mower Engine BladesScreaming tiller?
How do I set the float level in my carb?
What is the problem with my Sears Garden Tractor?
why is the pto switch on my sears tractor burning out?
Mower cranks when primed, but after running a second or two dies?
Sears 30" rear engine rider won't turn off with the starter key?