I know my manual doesn't say to use a friction disc when installing a new timing belt. The 1.0L EcoBoost requires it when changing timing belt and considerably more torque than the 1.6L. 300NM + 90° compared to the 100NM + 90° + 2 sec pause + 15°.
Makes me wonder if a revised manual might require a friction washer.
I know Adam from TunePlus did got his crank keyed in the trash Fiesta. But might just be overkill to pull the engine for that.
https://www.youtube.com/@AdamBrunson