Here.................
after idling for the five minutes one just shuts off the master then using two hands just pull the engine shutoff lever handle out at medium speed or slowly until the engine starves.
There is so much going on it there, like the governor weights go to wide open position and such but lots more.
So when the engine is to be shut down then don't just yank that handle out, pull slow medium speed, you will see what I mean.
Or just yank it out and then you get to fix the hydraulic head button.
Truck in high and fifth gear clutch in and engine shutoff all the way out and crank engine a few revolutions.
That proves it is not hydrolocked and that in fact it won't runaway and that everything is copacetic.
If it starts and begins to runaway you can feather release the clutch with brakes ON and stall it out.
Then push in the shutoff handle with same clutch in and fifth gear and hit the starter. She will start on the first revolution.
Then hold 900 to 1000 rpm for a while and warm it up. 4 to 7 minutes seems like a very long time but the fuel is free and a few minutes then spent is better than the many hours labor and parts to replace the head gaskets.
No warm up and you get to do head gaskets or replace the turbo. I think it is a 478 and the back of the engine gets warm LAST. Use your heat indicator gun on it, you'll see.
The spin on lube oil filters allow oil pressure to the turbo and top of the engine in 12 seconds instead of 92 seconds that is why I spent all that money
The mushroom is not fastened tight on purpose, ask me why.
This is all in the operators manual and placard but my conclusions are NOT. I want you to have the most fun you ever had going slow, I did.