Got it running again.
A loose wire was the culprit.
This wire is located just to the left of the oil filter and plugs into the right side of a whitish connector that labeled "dolphin." The male end of this wire goes vertically upwards into this connector, and it came loose. In fact, it is...
Craftsman T150 19.0 HP Won’t start after Mow in Reverse engine cut-off.
I was mowing for about twenty minutes when I put the mower in reverse and the engine cut-off as it is designed to do. This mower is about four summers old and I’ve always pushed that button on the “dashboard” to over-ride...