Non train project I've been working on.

She won't be that fast super.
But I still need to figure out what spot neutral is so ill be starting her outside. Just to be safe.

My old ride-on mower with the same Briggs & Stratton engine won't start unless it's in neutral. There are other fail-safes too; the blades have to be dis-engaged, and there has to be someone sitting on the seat. You probably knew all that already.