While you wait for answers, we may have found some information which could help you.
Click here for Black Smoke LawnScreaming tiller?
Sears 30" rear engine rider won't turn off with the starter key?
Can not turn the flywheel?
transmission sears 917.2555581?
What is the problem with my Sears Garden Tractor?
where is the fuse on a Craftmans LT 1000?