In article .net,
Dave S wrote:

On a hot start, I cool the pump body by running the battery operated
pump with the mixture closed in the Idle Cut Off position. This (on the
lycoming IO-360's Ive used it on) runs fresh "cool" fuel from the tanks,
through the pump body and back to the tank. I do this for a full minute,
then prime and start as a normal start.

Which aircraft do you have the engine in?
Not all fuel systems with Lycoming IO-360's have a fuel return line (at
least it is not shown on the fuel system diagram).

All the Continentals I have seen have the fuel return to either the
left main or the selected tank.

This is why the Continental procedure calls for
- Mixture idle/cutoff
- Throttle open
- Fuel pump on for 30 seconds then off

With the fuel flowing through the spider and back to the tank, the fuel
lines are purged and cooled.
Without a fuel return line, there is no means of purging the line and
cooling it. It would only pressureize the line to the pumps ablility.