Simplify the following text for a Grade 5 native English-speaking person.
Original: If the lever was pushed forward and the driver took his foot off the left pedal , the Model T entered high gear , but only when the handbrake lever was fully forward .
Simplified: Step on the pedal all the way to the left , move the throttle lever to `` give it the gas '' and gently move the floor lever forward . This is low gear , the powerful gear used to get the Model T moving .