Advance the throttle smoothly to takeoff power and confirm proper engine and flight instrument indications prior to rotation.

Private Pilot Airplane ACS › IV. Takeoffs, Landings, and Go-Arounds › A. Normal Takeoff and Climb

Advance the throttle smoothly to takeoff power and confirm proper engine and flight instrument indications prior to rotation. a. Establish and maintain the most efficient planing/lift-off attitude, and correct for porpoising or skipping (ASES, AMES)