Probably another engine???

LT1000 is pretty much like saying Chevy. Just too generic.

It's probably a Briggs engine, but it could be one of several different models, from an opposed twin to an OHV single.

Either post the Sears 917.xxxxxx number, and/or the Model & Type # from the engine.

And, by all means---do a complete cleaning of the carburetor, especially check for operation of the float, and the passages on the carb body.
A dirty carb ,and a sticking float, or a float that doesn't float, is probably the main reason the engine went BANG!
those are the main causes of engines blowing large holes in the block! And, if you don't do the carb clean up---don't try to run it for very long, as it just might go bang again!
What happens is this. The float sticks, the gas fills up the carb body, then migrates into the engine oil, and that thins it out, and: BANG! At that time, you may just be able to view the inside of the engine, without dismantling it! HTH RJ